2191 lines
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2191 lines
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<div class="bodywrapper">
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<div class="body">
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<div class="section" id="api-reference">
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<h1>API Reference<a class="headerlink" href="#api-reference" title="Permalink to this headline">¶</a></h1>
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<div class="section" id="includes">
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<h2>Includes<a class="headerlink" href="#includes" title="Permalink to this headline">¶</a></h2>
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<p>To use the public APIs, include <tt class="docutils literal"><span class="pre">nghttp2/nghttp2.h</span></tt>:</p>
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<div class="highlight-c"><div class="highlight"><pre><span class="cp">#include <nghttp2/nghttp2.h></span>
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</pre></div>
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</div>
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</div>
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<div class="section" id="remarks">
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<h2>Remarks<a class="headerlink" href="#remarks" title="Permalink to this headline">¶</a></h2>
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<p>Do not call <a class="reference internal" href="#nghttp2_session_send" title="nghttp2_session_send"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_send()</span></tt></a>, <a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> or
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<a class="reference internal" href="#nghttp2_session_mem_recv" title="nghttp2_session_mem_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_mem_recv()</span></tt></a> from the nghttp2 callback functions
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directly or indirectly. It will lead to the crash. You can submit
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requests or frames in the callbacks then call <a class="reference internal" href="#nghttp2_session_send" title="nghttp2_session_send"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_send()</span></tt></a>,
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<a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> or <a class="reference internal" href="#nghttp2_session_mem_recv" title="nghttp2_session_mem_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_mem_recv()</span></tt></a> outside of the
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callbacks.</p>
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</div>
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<div class="section" id="macros">
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<h2>Macros<a class="headerlink" href="#macros" title="Permalink to this headline">¶</a></h2>
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<dl class="macro">
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<dt id="NGHTTP2_VERSION">
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<tt class="descname">NGHTTP2_VERSION</tt><a class="headerlink" href="#NGHTTP2_VERSION" title="Permalink to this definition">¶</a></dt>
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<dd><p>Version number of the nghttp2 library release</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_PROTO_VERSION_ID">
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<tt class="descname">NGHTTP2_PROTO_VERSION_ID</tt><a class="headerlink" href="#NGHTTP2_PROTO_VERSION_ID" title="Permalink to this definition">¶</a></dt>
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<dd><p>The protocol version identification of this library supports.</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_PROTO_VERSION_ID_LEN">
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<tt class="descname">NGHTTP2_PROTO_VERSION_ID_LEN</tt><a class="headerlink" href="#NGHTTP2_PROTO_VERSION_ID_LEN" title="Permalink to this definition">¶</a></dt>
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<dd><p>The length of NGHTTP2_PROTO_VERSION_ID.</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_PRI_DEFAULT">
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<tt class="descname">NGHTTP2_PRI_DEFAULT</tt><a class="headerlink" href="#NGHTTP2_PRI_DEFAULT" title="Permalink to this definition">¶</a></dt>
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<dd><p>The default priority value</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_PRI_LOWEST">
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<tt class="descname">NGHTTP2_PRI_LOWEST</tt><a class="headerlink" href="#NGHTTP2_PRI_LOWEST" title="Permalink to this definition">¶</a></dt>
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<dd><p>The lowest priority value</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_MAX_WINDOW_SIZE">
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<tt class="descname">NGHTTP2_MAX_WINDOW_SIZE</tt><a class="headerlink" href="#NGHTTP2_MAX_WINDOW_SIZE" title="Permalink to this definition">¶</a></dt>
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<dd><p>The maximum window size</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_INITIAL_WINDOW_SIZE">
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<tt class="descname">NGHTTP2_INITIAL_WINDOW_SIZE</tt><a class="headerlink" href="#NGHTTP2_INITIAL_WINDOW_SIZE" title="Permalink to this definition">¶</a></dt>
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<dd><p>The initial window size for stream level flow control.</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_INITIAL_CONNECTION_WINDOW_SIZE">
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<tt class="descname">NGHTTP2_INITIAL_CONNECTION_WINDOW_SIZE</tt><a class="headerlink" href="#NGHTTP2_INITIAL_CONNECTION_WINDOW_SIZE" title="Permalink to this definition">¶</a></dt>
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<dd><p>The initial window size for connection level flow control.</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_CLIENT_CONNECTION_HEADER">
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<tt class="descname">NGHTTP2_CLIENT_CONNECTION_HEADER</tt><a class="headerlink" href="#NGHTTP2_CLIENT_CONNECTION_HEADER" title="Permalink to this definition">¶</a></dt>
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<dd><p>The client connection header.</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_CLIENT_CONNECTION_HEADER_LEN">
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<tt class="descname">NGHTTP2_CLIENT_CONNECTION_HEADER_LEN</tt><a class="headerlink" href="#NGHTTP2_CLIENT_CONNECTION_HEADER_LEN" title="Permalink to this definition">¶</a></dt>
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<dd><p>The length of NGHTTP2_CLIENT_CONNECTION_HEADER.</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_INITIAL_MAX_CONCURRENT_STREAMS">
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<tt class="descname">NGHTTP2_INITIAL_MAX_CONCURRENT_STREAMS</tt><a class="headerlink" href="#NGHTTP2_INITIAL_MAX_CONCURRENT_STREAMS" title="Permalink to this definition">¶</a></dt>
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<dd><p>Default maximum concurrent streams.</p>
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</dd></dl>
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</div>
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<div class="section" id="enums">
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<h2>Enums<a class="headerlink" href="#enums" title="Permalink to this headline">¶</a></h2>
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<dl class="type">
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<dt id="nghttp2_error">
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<tt class="descname">nghttp2_error</tt><a class="headerlink" href="#nghttp2_error" title="Permalink to this definition">¶</a></dt>
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<dd><p>Error codes used in this library. The code range is [-999, -500],
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inclusive. The following values are defined:</p>
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<dl class="macro">
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<dt id="NGHTTP2_ERR_INVALID_ARGUMENT">
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<tt class="descname">NGHTTP2_ERR_INVALID_ARGUMENT</tt><a class="headerlink" href="#NGHTTP2_ERR_INVALID_ARGUMENT" title="Permalink to this definition">¶</a></dt>
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<dd><p>(<tt class="docutils literal"><span class="pre">-501</span></tt>)
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Invalid argument passed.</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_ERR_UNSUPPORTED_VERSION">
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<tt class="descname">NGHTTP2_ERR_UNSUPPORTED_VERSION</tt><a class="headerlink" href="#NGHTTP2_ERR_UNSUPPORTED_VERSION" title="Permalink to this definition">¶</a></dt>
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<dd><p>(<tt class="docutils literal"><span class="pre">-503</span></tt>)
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The specified protocol version is not supported.</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_ERR_WOULDBLOCK">
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<tt class="descname">NGHTTP2_ERR_WOULDBLOCK</tt><a class="headerlink" href="#NGHTTP2_ERR_WOULDBLOCK" title="Permalink to this definition">¶</a></dt>
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<dd><p>(<tt class="docutils literal"><span class="pre">-504</span></tt>)
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Used as a return value from <a class="reference internal" href="#nghttp2_send_callback" title="nghttp2_send_callback"><tt class="xref c c-type docutils literal"><span class="pre">nghttp2_send_callback</span></tt></a> and
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<a class="reference internal" href="#nghttp2_recv_callback" title="nghttp2_recv_callback"><tt class="xref c c-type docutils literal"><span class="pre">nghttp2_recv_callback</span></tt></a> to indicate that the operation
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would block.</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_ERR_PROTO">
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<tt class="descname">NGHTTP2_ERR_PROTO</tt><a class="headerlink" href="#NGHTTP2_ERR_PROTO" title="Permalink to this definition">¶</a></dt>
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<dd><p>(<tt class="docutils literal"><span class="pre">-505</span></tt>)
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General protocol error</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_ERR_INVALID_FRAME">
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<tt class="descname">NGHTTP2_ERR_INVALID_FRAME</tt><a class="headerlink" href="#NGHTTP2_ERR_INVALID_FRAME" title="Permalink to this definition">¶</a></dt>
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<dd><p>(<tt class="docutils literal"><span class="pre">-506</span></tt>)
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The frame is invalid.</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_ERR_EOF">
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<tt class="descname">NGHTTP2_ERR_EOF</tt><a class="headerlink" href="#NGHTTP2_ERR_EOF" title="Permalink to this definition">¶</a></dt>
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<dd><p>(<tt class="docutils literal"><span class="pre">-507</span></tt>)
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The peer performed a shutdown on the connection.</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_ERR_DEFERRED">
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<tt class="descname">NGHTTP2_ERR_DEFERRED</tt><a class="headerlink" href="#NGHTTP2_ERR_DEFERRED" title="Permalink to this definition">¶</a></dt>
|
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<dd><p>(<tt class="docutils literal"><span class="pre">-508</span></tt>)
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Used as a return value from
|
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<a class="reference internal" href="#nghttp2_data_source_read_callback" title="nghttp2_data_source_read_callback"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_data_source_read_callback()</span></tt></a> to indicate that data
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transfer is postponed. See
|
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<a class="reference internal" href="#nghttp2_data_source_read_callback" title="nghttp2_data_source_read_callback"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_data_source_read_callback()</span></tt></a> for details.</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_ERR_STREAM_ID_NOT_AVAILABLE">
|
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<tt class="descname">NGHTTP2_ERR_STREAM_ID_NOT_AVAILABLE</tt><a class="headerlink" href="#NGHTTP2_ERR_STREAM_ID_NOT_AVAILABLE" title="Permalink to this definition">¶</a></dt>
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<dd><p>(<tt class="docutils literal"><span class="pre">-509</span></tt>)
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|
Stream ID has reached the maximum value. Therefore no stream ID
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is available.</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_ERR_STREAM_CLOSED">
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<tt class="descname">NGHTTP2_ERR_STREAM_CLOSED</tt><a class="headerlink" href="#NGHTTP2_ERR_STREAM_CLOSED" title="Permalink to this definition">¶</a></dt>
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<dd><p>(<tt class="docutils literal"><span class="pre">-510</span></tt>)
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The stream is already closed; or the stream ID is invalid.</p>
|
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_ERR_STREAM_CLOSING">
|
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<tt class="descname">NGHTTP2_ERR_STREAM_CLOSING</tt><a class="headerlink" href="#NGHTTP2_ERR_STREAM_CLOSING" title="Permalink to this definition">¶</a></dt>
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<dd><p>(<tt class="docutils literal"><span class="pre">-511</span></tt>)
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|
RST_STREAM has been added to the outbound queue. The stream is in
|
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closing state.</p>
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</dd></dl>
|
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<dl class="macro">
|
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<dt id="NGHTTP2_ERR_STREAM_SHUT_WR">
|
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<tt class="descname">NGHTTP2_ERR_STREAM_SHUT_WR</tt><a class="headerlink" href="#NGHTTP2_ERR_STREAM_SHUT_WR" title="Permalink to this definition">¶</a></dt>
|
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<dd><p>(<tt class="docutils literal"><span class="pre">-512</span></tt>)
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The transmission is not allowed for this stream (e.g., a frame
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with END_STREAM flag set has already sent).</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_ERR_INVALID_STREAM_ID">
|
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<tt class="descname">NGHTTP2_ERR_INVALID_STREAM_ID</tt><a class="headerlink" href="#NGHTTP2_ERR_INVALID_STREAM_ID" title="Permalink to this definition">¶</a></dt>
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<dd><p>(<tt class="docutils literal"><span class="pre">-513</span></tt>)
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The stream ID is invalid.</p>
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</dd></dl>
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<dl class="macro">
|
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<dt id="NGHTTP2_ERR_INVALID_STREAM_STATE">
|
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<tt class="descname">NGHTTP2_ERR_INVALID_STREAM_STATE</tt><a class="headerlink" href="#NGHTTP2_ERR_INVALID_STREAM_STATE" title="Permalink to this definition">¶</a></dt>
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<dd><p>(<tt class="docutils literal"><span class="pre">-514</span></tt>)
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The state of the stream is not valid (e.g., DATA cannot be sent
|
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to the stream if response HEADERS has not been sent).</p>
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</dd></dl>
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<dl class="macro">
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<dt id="NGHTTP2_ERR_DEFERRED_DATA_EXIST">
|
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<tt class="descname">NGHTTP2_ERR_DEFERRED_DATA_EXIST</tt><a class="headerlink" href="#NGHTTP2_ERR_DEFERRED_DATA_EXIST" title="Permalink to this definition">¶</a></dt>
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<dd><p>(<tt class="docutils literal"><span class="pre">-515</span></tt>)
|
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Another DATA frame has already been deferred.</p>
|
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</dd></dl>
|
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<dl class="macro">
|
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<dt id="NGHTTP2_ERR_START_STREAM_NOT_ALLOWED">
|
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<tt class="descname">NGHTTP2_ERR_START_STREAM_NOT_ALLOWED</tt><a class="headerlink" href="#NGHTTP2_ERR_START_STREAM_NOT_ALLOWED" title="Permalink to this definition">¶</a></dt>
|
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<dd><p>(<tt class="docutils literal"><span class="pre">-516</span></tt>)
|
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Starting new stream is not allowed. (e.g., GOAWAY has been sent
|
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and/or received.</p>
|
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</dd></dl>
|
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<dl class="macro">
|
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<dt id="NGHTTP2_ERR_GOAWAY_ALREADY_SENT">
|
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<tt class="descname">NGHTTP2_ERR_GOAWAY_ALREADY_SENT</tt><a class="headerlink" href="#NGHTTP2_ERR_GOAWAY_ALREADY_SENT" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">-517</span></tt>)
|
|
GOAWAY has already been sent.</p>
|
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</dd></dl>
|
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<dl class="macro">
|
|
<dt id="NGHTTP2_ERR_INVALID_HEADER_BLOCK">
|
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<tt class="descname">NGHTTP2_ERR_INVALID_HEADER_BLOCK</tt><a class="headerlink" href="#NGHTTP2_ERR_INVALID_HEADER_BLOCK" title="Permalink to this definition">¶</a></dt>
|
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<dd><p>(<tt class="docutils literal"><span class="pre">-518</span></tt>)
|
|
The received frame contains the invalid header block. (e.g.,
|
|
There are duplicate header names; or the header names are not
|
|
encoded in US-ASCII character set and not lower cased; or the
|
|
header name is zero-length string; or the header value contains
|
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multiple in-sequence NUL bytes).</p>
|
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</dd></dl>
|
|
|
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<dl class="macro">
|
|
<dt id="NGHTTP2_ERR_INVALID_STATE">
|
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<tt class="descname">NGHTTP2_ERR_INVALID_STATE</tt><a class="headerlink" href="#NGHTTP2_ERR_INVALID_STATE" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">-519</span></tt>)
|
|
Indicates that the context is not suitable to perform the
|
|
requested operation.</p>
|
|
</dd></dl>
|
|
|
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<dl class="macro">
|
|
<dt id="NGHTTP2_ERR_GZIP">
|
|
<tt class="descname">NGHTTP2_ERR_GZIP</tt><a class="headerlink" href="#NGHTTP2_ERR_GZIP" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">-520</span></tt>)
|
|
The gzip error.</p>
|
|
</dd></dl>
|
|
|
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<dl class="macro">
|
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<dt id="NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE">
|
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<tt class="descname">NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE</tt><a class="headerlink" href="#NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">-521</span></tt>)
|
|
The user callback function failed due to the temporal error.</p>
|
|
</dd></dl>
|
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|
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<dl class="macro">
|
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<dt id="NGHTTP2_ERR_FRAME_TOO_LARGE">
|
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<tt class="descname">NGHTTP2_ERR_FRAME_TOO_LARGE</tt><a class="headerlink" href="#NGHTTP2_ERR_FRAME_TOO_LARGE" title="Permalink to this definition">¶</a></dt>
|
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<dd><p>(<tt class="docutils literal"><span class="pre">-522</span></tt>)
|
|
The length of the frame is too large.</p>
|
|
</dd></dl>
|
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<dl class="macro">
|
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<dt id="NGHTTP2_ERR_HEADER_COMP">
|
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<tt class="descname">NGHTTP2_ERR_HEADER_COMP</tt><a class="headerlink" href="#NGHTTP2_ERR_HEADER_COMP" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">-523</span></tt>)
|
|
Header block inflate/deflate error.</p>
|
|
</dd></dl>
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<dl class="macro">
|
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<dt id="NGHTTP2_ERR_FLOW_CONTROL">
|
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<tt class="descname">NGHTTP2_ERR_FLOW_CONTROL</tt><a class="headerlink" href="#NGHTTP2_ERR_FLOW_CONTROL" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">-524</span></tt>)
|
|
Flow control error</p>
|
|
</dd></dl>
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<dl class="macro">
|
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<dt id="NGHTTP2_ERR_FATAL">
|
|
<tt class="descname">NGHTTP2_ERR_FATAL</tt><a class="headerlink" href="#NGHTTP2_ERR_FATAL" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">-900</span></tt>)
|
|
The errors < <a class="reference internal" href="#NGHTTP2_ERR_FATAL" title="NGHTTP2_ERR_FATAL"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_FATAL</span></tt></a> mean that the library is
|
|
under unexpected condition and cannot process any further data
|
|
reliably (e.g., out of memory).</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_ERR_NOMEM">
|
|
<tt class="descname">NGHTTP2_ERR_NOMEM</tt><a class="headerlink" href="#NGHTTP2_ERR_NOMEM" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">-901</span></tt>)
|
|
Out of memory. This is a fatal error.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_ERR_CALLBACK_FAILURE">
|
|
<tt class="descname">NGHTTP2_ERR_CALLBACK_FAILURE</tt><a class="headerlink" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">-902</span></tt>)
|
|
The user callback function failed. This is a fatal error.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_frame_type">
|
|
<tt class="descname">nghttp2_frame_type</tt><a class="headerlink" href="#nghttp2_frame_type" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The control frame types in HTTP/2.0.</p>
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_DATA">
|
|
<tt class="descname">NGHTTP2_DATA</tt><a class="headerlink" href="#NGHTTP2_DATA" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">0</span></tt>)
|
|
The DATA frame.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_HEADERS">
|
|
<tt class="descname">NGHTTP2_HEADERS</tt><a class="headerlink" href="#NGHTTP2_HEADERS" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">1</span></tt>)
|
|
The HEADERS frame.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_PRIORITY">
|
|
<tt class="descname">NGHTTP2_PRIORITY</tt><a class="headerlink" href="#NGHTTP2_PRIORITY" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">2</span></tt>)
|
|
The PRIORITY frame.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_RST_STREAM">
|
|
<tt class="descname">NGHTTP2_RST_STREAM</tt><a class="headerlink" href="#NGHTTP2_RST_STREAM" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">3</span></tt>)
|
|
The RST_STREAM frame.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_SETTINGS">
|
|
<tt class="descname">NGHTTP2_SETTINGS</tt><a class="headerlink" href="#NGHTTP2_SETTINGS" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">4</span></tt>)
|
|
The SETTINGS frame.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_PUSH_PROMISE">
|
|
<tt class="descname">NGHTTP2_PUSH_PROMISE</tt><a class="headerlink" href="#NGHTTP2_PUSH_PROMISE" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">5</span></tt>)
|
|
The PUSH_PROMISE frame.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_PING">
|
|
<tt class="descname">NGHTTP2_PING</tt><a class="headerlink" href="#NGHTTP2_PING" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">6</span></tt>)
|
|
The PING frame.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_GOAWAY">
|
|
<tt class="descname">NGHTTP2_GOAWAY</tt><a class="headerlink" href="#NGHTTP2_GOAWAY" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">7</span></tt>)
|
|
The GOAWAY frame.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_WINDOW_UPDATE">
|
|
<tt class="descname">NGHTTP2_WINDOW_UPDATE</tt><a class="headerlink" href="#NGHTTP2_WINDOW_UPDATE" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">9</span></tt>)
|
|
The WINDOW_UPDATE frame.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_flag">
|
|
<tt class="descname">nghttp2_flag</tt><a class="headerlink" href="#nghttp2_flag" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The flags for HTTP/2.0 frames. This enum defines all flags for
|
|
frames, assuming that the same flag name has the same mask.</p>
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_FLAG_NONE">
|
|
<tt class="descname">NGHTTP2_FLAG_NONE</tt><a class="headerlink" href="#NGHTTP2_FLAG_NONE" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">0</span></tt>)
|
|
No flag set.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_FLAG_END_STREAM">
|
|
<tt class="descname">NGHTTP2_FLAG_END_STREAM</tt><a class="headerlink" href="#NGHTTP2_FLAG_END_STREAM" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">0x1</span></tt>)
|
|
The END_STREAM flag.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_FLAG_END_HEADERS">
|
|
<tt class="descname">NGHTTP2_FLAG_END_HEADERS</tt><a class="headerlink" href="#NGHTTP2_FLAG_END_HEADERS" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">0x4</span></tt>)
|
|
The END_HEADERS flag.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_FLAG_PRIORITY">
|
|
<tt class="descname">NGHTTP2_FLAG_PRIORITY</tt><a class="headerlink" href="#NGHTTP2_FLAG_PRIORITY" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">0x8</span></tt>)
|
|
The PRIORITY flag.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_FLAG_END_PUSH_PROMISE">
|
|
<tt class="descname">NGHTTP2_FLAG_END_PUSH_PROMISE</tt><a class="headerlink" href="#NGHTTP2_FLAG_END_PUSH_PROMISE" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">0x4</span></tt>)
|
|
The END_PUSH_PROMISE flag.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_FLAG_PONG">
|
|
<tt class="descname">NGHTTP2_FLAG_PONG</tt><a class="headerlink" href="#NGHTTP2_FLAG_PONG" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">0x1</span></tt>)
|
|
The PONG flag.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_settings_id">
|
|
<tt class="descname">nghttp2_settings_id</tt><a class="headerlink" href="#nghttp2_settings_id" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The SETTINGS ID.</p>
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS">
|
|
<tt class="descname">NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS</tt><a class="headerlink" href="#NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">4</span></tt>)
|
|
SETTINGS_MAX_CONCURRENT_STREAMS</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE">
|
|
<tt class="descname">NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE</tt><a class="headerlink" href="#NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">7</span></tt>)
|
|
SETTINGS_INITIAL_WINDOW_SIZE</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_SETTINGS_FLOW_CONTROL_OPTIONS">
|
|
<tt class="descname">NGHTTP2_SETTINGS_FLOW_CONTROL_OPTIONS</tt><a class="headerlink" href="#NGHTTP2_SETTINGS_FLOW_CONTROL_OPTIONS" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">10</span></tt>)
|
|
SETTINGS_FLOW_CONTROL_OPTIONS</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_SETTINGS_MAX">
|
|
<tt class="descname">NGHTTP2_SETTINGS_MAX</tt><a class="headerlink" href="#NGHTTP2_SETTINGS_MAX" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">10</span></tt>)
|
|
Maximum ID of <a class="reference internal" href="#nghttp2_settings_id" title="nghttp2_settings_id"><tt class="xref c c-type docutils literal"><span class="pre">nghttp2_settings_id</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_error_code">
|
|
<tt class="descname">nghttp2_error_code</tt><a class="headerlink" href="#nghttp2_error_code" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The status codes for the RST_STREAM and GOAWAY frames.</p>
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_NO_ERROR">
|
|
<tt class="descname">NGHTTP2_NO_ERROR</tt><a class="headerlink" href="#NGHTTP2_NO_ERROR" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">0</span></tt>)
|
|
No errors.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_PROTOCOL_ERROR">
|
|
<tt class="descname">NGHTTP2_PROTOCOL_ERROR</tt><a class="headerlink" href="#NGHTTP2_PROTOCOL_ERROR" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">1</span></tt>)
|
|
PROTOCOL_ERROR</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_INTERNAL_ERROR">
|
|
<tt class="descname">NGHTTP2_INTERNAL_ERROR</tt><a class="headerlink" href="#NGHTTP2_INTERNAL_ERROR" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">2</span></tt>)
|
|
INTERNAL_ERROR</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_FLOW_CONTROL_ERROR">
|
|
<tt class="descname">NGHTTP2_FLOW_CONTROL_ERROR</tt><a class="headerlink" href="#NGHTTP2_FLOW_CONTROL_ERROR" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">3</span></tt>)
|
|
FLOW_CONTROL_ERROR</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_STREAM_CLOSED">
|
|
<tt class="descname">NGHTTP2_STREAM_CLOSED</tt><a class="headerlink" href="#NGHTTP2_STREAM_CLOSED" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">5</span></tt>)
|
|
STREAM_CLOSED</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_FRAME_TOO_LARGE">
|
|
<tt class="descname">NGHTTP2_FRAME_TOO_LARGE</tt><a class="headerlink" href="#NGHTTP2_FRAME_TOO_LARGE" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">6</span></tt>)
|
|
FRAME_TOO_LARGE</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_REFUSED_STREAM">
|
|
<tt class="descname">NGHTTP2_REFUSED_STREAM</tt><a class="headerlink" href="#NGHTTP2_REFUSED_STREAM" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">7</span></tt>)
|
|
REFUSED_STREAM</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_CANCEL">
|
|
<tt class="descname">NGHTTP2_CANCEL</tt><a class="headerlink" href="#NGHTTP2_CANCEL" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">8</span></tt>)
|
|
CANCEL</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_COMPRESSION_ERROR">
|
|
<tt class="descname">NGHTTP2_COMPRESSION_ERROR</tt><a class="headerlink" href="#NGHTTP2_COMPRESSION_ERROR" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">9</span></tt>)
|
|
COMPRESSION_ERROR</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_headers_category">
|
|
<tt class="descname">nghttp2_headers_category</tt><a class="headerlink" href="#nghttp2_headers_category" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The category of HEADERS, which indicates the role of the frame. In
|
|
HTTP/2.0 spec, request, response, push response and other arbitrary
|
|
headers (e.g., trailers) are all called just HEADERS. To give the
|
|
application the role of incoming HEADERS frame, we define several
|
|
categories.</p>
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_HCAT_REQUEST">
|
|
<tt class="descname">NGHTTP2_HCAT_REQUEST</tt><a class="headerlink" href="#NGHTTP2_HCAT_REQUEST" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">0</span></tt>)
|
|
The HEADERS frame is opening new stream, which is analogous to
|
|
SYN_STREAM in SPDY.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_HCAT_RESPONSE">
|
|
<tt class="descname">NGHTTP2_HCAT_RESPONSE</tt><a class="headerlink" href="#NGHTTP2_HCAT_RESPONSE" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">1</span></tt>)
|
|
The HEADERS frame is the first response headers, which is
|
|
analogous to SYN_REPLY in SPDY.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_HCAT_PUSH_RESPONSE">
|
|
<tt class="descname">NGHTTP2_HCAT_PUSH_RESPONSE</tt><a class="headerlink" href="#NGHTTP2_HCAT_PUSH_RESPONSE" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">2</span></tt>)
|
|
The HEADERS frame is the first headers sent against reserved
|
|
stream.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_HCAT_HEADERS">
|
|
<tt class="descname">NGHTTP2_HCAT_HEADERS</tt><a class="headerlink" href="#NGHTTP2_HCAT_HEADERS" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">3</span></tt>)
|
|
The HEADERS frame which does not apply for the above categories,
|
|
which is analogous to HEADERS in SPDY.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_opt">
|
|
<tt class="descname">nghttp2_opt</tt><a class="headerlink" href="#nghttp2_opt" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Configuration options for <a class="reference internal" href="#nghttp2_session" title="nghttp2_session"><tt class="xref c c-type docutils literal"><span class="pre">nghttp2_session</span></tt></a>.</p>
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_OPT_NO_AUTO_STREAM_WINDOW_UPDATE">
|
|
<tt class="descname">NGHTTP2_OPT_NO_AUTO_STREAM_WINDOW_UPDATE</tt><a class="headerlink" href="#NGHTTP2_OPT_NO_AUTO_STREAM_WINDOW_UPDATE" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">1</span></tt>)
|
|
This option prevents the library from sending WINDOW_UPDATE for a
|
|
stream automatically. If this option is set, the application is
|
|
responsible for sending WINDOW_UPDATE using
|
|
<a class="reference internal" href="#nghttp2_submit_window_update" title="nghttp2_submit_window_update"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_submit_window_update()</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="macro">
|
|
<dt id="NGHTTP2_OPT_NO_AUTO_CONNECTION_WINDOW_UPDATE">
|
|
<tt class="descname">NGHTTP2_OPT_NO_AUTO_CONNECTION_WINDOW_UPDATE</tt><a class="headerlink" href="#NGHTTP2_OPT_NO_AUTO_CONNECTION_WINDOW_UPDATE" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>(<tt class="docutils literal"><span class="pre">2</span></tt>)
|
|
This option prevents the library from sending WINDOW_UPDATE for a
|
|
connection automatically. If this option is set, the application
|
|
is responsible for sending WINDOW_UPDATE with stream ID 0 using
|
|
<a class="reference internal" href="#nghttp2_submit_window_update" title="nghttp2_submit_window_update"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_submit_window_update()</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
</div>
|
|
<div class="section" id="types-structs-unions-and-typedefs">
|
|
<h2>Types (structs, unions and typedefs)<a class="headerlink" href="#types-structs-unions-and-typedefs" title="Permalink to this headline">¶</a></h2>
|
|
<dl class="type">
|
|
<dt id="nghttp2_session">
|
|
<tt class="descname">nghttp2_session</tt><a class="headerlink" href="#nghttp2_session" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The primary structure to hold the resources needed for a HTTP/2.0
|
|
session. The details of this structure are intentionally hidden
|
|
from the public API.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_nv">
|
|
<tt class="descname">nghttp2_nv</tt><a class="headerlink" href="#nghttp2_nv" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The name/value pair, which mainly used to represent header fields.</p>
|
|
<dl class="member">
|
|
<dt id="nghttp2_nv.name">
|
|
uint8_t *<tt class="descname">name</tt><a class="headerlink" href="#nghttp2_nv.name" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The <em>name</em> byte string, which is not necessarily <tt class="docutils literal"><span class="pre">NULL</span></tt>
|
|
terminated.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_nv.value">
|
|
uint8_t *<tt class="descname">value</tt><a class="headerlink" href="#nghttp2_nv.value" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The <em>value</em> byte string, which is not necessarily <tt class="docutils literal"><span class="pre">NULL</span></tt>
|
|
terminated.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_nv.namelen">
|
|
uint16_t <tt class="descname">namelen</tt><a class="headerlink" href="#nghttp2_nv.namelen" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The length of the <em>name</em>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_nv.valuelen">
|
|
uint16_t <tt class="descname">valuelen</tt><a class="headerlink" href="#nghttp2_nv.valuelen" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The length of the <em>value</em>.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_frame_hd">
|
|
<tt class="descname">nghttp2_frame_hd</tt><a class="headerlink" href="#nghttp2_frame_hd" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The frame header.</p>
|
|
<dl class="member">
|
|
<dt id="nghttp2_frame_hd.length">
|
|
uint16_t <tt class="descname">length</tt><a class="headerlink" href="#nghttp2_frame_hd.length" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The length field of this frame, excluding frame header.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_frame_hd.type">
|
|
uint8_t <tt class="descname">type</tt><a class="headerlink" href="#nghttp2_frame_hd.type" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The type of this frame. See <a class="reference internal" href="#nghttp2_frame" title="nghttp2_frame"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_frame()</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_frame_hd.flags">
|
|
uint8_t <tt class="descname">flags</tt><a class="headerlink" href="#nghttp2_frame_hd.flags" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The flags.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_frame_hd.stream_id">
|
|
int32_t <tt class="descname">stream_id</tt><a class="headerlink" href="#nghttp2_frame_hd.stream_id" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The stream identifier (aka, stream ID)</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_data_source">
|
|
<tt class="descname">nghttp2_data_source</tt><a class="headerlink" href="#nghttp2_data_source" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>This union represents the some kind of data source passed to
|
|
<a class="reference internal" href="#nghttp2_data_source_read_callback" title="nghttp2_data_source_read_callback"><tt class="xref c c-type docutils literal"><span class="pre">nghttp2_data_source_read_callback</span></tt></a>.</p>
|
|
<dl class="member">
|
|
<dt id="nghttp2_data_source.fd">
|
|
int <tt class="descname">fd</tt><a class="headerlink" href="#nghttp2_data_source.fd" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The integer field, suitable for a file descriptor.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_data_source.ptr">
|
|
void *<tt class="descname">ptr</tt><a class="headerlink" href="#nghttp2_data_source.ptr" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The pointer to an arbitrary object.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_data_source_read_callback">
|
|
typedef ssize_t <tt class="descname">(*nghttp2_data_source_read_callback)</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, int32_t<em> stream_id</em>, uint8_t<em> *buf</em>, size_t<em> length</em>, int<em> *eof</em>, <a class="reference internal" href="#nghttp2_data_source" title="nghttp2_data_source">nghttp2_data_source</a><em> *source</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_data_source_read_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when the library wants to read data from
|
|
the <em>source</em>. The read data is sent in the stream <em>stream_id</em>. The
|
|
implementation of this function must read at most <em>length</em> bytes of
|
|
data from <em>source</em> (or possibly other places) and store them in
|
|
<em>buf</em> and return number of data stored in <em>buf</em>. If EOF is reached,
|
|
set <em>*eof</em> to 1. If the application wants to postpone DATA frames,
|
|
(e.g., asynchronous I/O, or reading data blocks for long time), it
|
|
is achieved by returning <a class="reference internal" href="#NGHTTP2_ERR_DEFERRED" title="NGHTTP2_ERR_DEFERRED"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_DEFERRED</span></tt></a> without
|
|
reading any data in this invocation. The library removes DATA
|
|
frame from the outgoing queue temporarily. To move back deferred
|
|
DATA frame to outgoing queue, call <a class="reference internal" href="#nghttp2_session_resume_data" title="nghttp2_session_resume_data"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_resume_data()</span></tt></a>.
|
|
In case of error, there are 2 choices. Returning
|
|
<a class="reference internal" href="#NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE" title="NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE</span></tt></a> will close the stream
|
|
by issuing RST_STREAM with <a class="reference internal" href="#NGHTTP2_INTERNAL_ERROR" title="NGHTTP2_INTERNAL_ERROR"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_INTERNAL_ERROR</span></tt></a>.
|
|
Returning <a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a> will signal the
|
|
entire session failure.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_data_provider">
|
|
<tt class="descname">nghttp2_data_provider</tt><a class="headerlink" href="#nghttp2_data_provider" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>This struct represents the data source and the way to read a chunk
|
|
of data from it.</p>
|
|
<dl class="member">
|
|
<dt id="nghttp2_data_provider.source">
|
|
<a class="reference internal" href="#nghttp2_data_source" title="nghttp2_data_source">nghttp2_data_source</a> <tt class="descname">source</tt><a class="headerlink" href="#nghttp2_data_provider.source" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The data source.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_data_provider.read_callback">
|
|
<a class="reference internal" href="#nghttp2_data_source_read_callback" title="nghttp2_data_source_read_callback">nghttp2_data_source_read_callback</a> <tt class="descname">read_callback</tt><a class="headerlink" href="#nghttp2_data_provider.read_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The callback function to read a chunk of data from the <em>source</em>.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_headers">
|
|
<tt class="descname">nghttp2_headers</tt><a class="headerlink" href="#nghttp2_headers" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The HEADERS frame. It has the following members:</p>
|
|
<dl class="member">
|
|
<dt id="nghttp2_headers.hd">
|
|
<a class="reference internal" href="#nghttp2_frame_hd" title="nghttp2_frame_hd">nghttp2_frame_hd</a> <tt class="descname">hd</tt><a class="headerlink" href="#nghttp2_headers.hd" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The frame header.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_headers.pri">
|
|
int32_t <tt class="descname">pri</tt><a class="headerlink" href="#nghttp2_headers.pri" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The priority.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_headers.nva">
|
|
<a class="reference internal" href="#nghttp2_nv" title="nghttp2_nv">nghttp2_nv</a> *<tt class="descname">nva</tt><a class="headerlink" href="#nghttp2_headers.nva" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The name/value pairs.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_headers.nvlen">
|
|
size_t <tt class="descname">nvlen</tt><a class="headerlink" href="#nghttp2_headers.nvlen" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The number of name/value pairs in <em>nva</em>.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_priority">
|
|
<tt class="descname">nghttp2_priority</tt><a class="headerlink" href="#nghttp2_priority" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The PRIORITY frame. It has the following members:</p>
|
|
<dl class="member">
|
|
<dt id="nghttp2_priority.hd">
|
|
<a class="reference internal" href="#nghttp2_frame_hd" title="nghttp2_frame_hd">nghttp2_frame_hd</a> <tt class="descname">hd</tt><a class="headerlink" href="#nghttp2_priority.hd" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The frame header.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_priority.pri">
|
|
int32_t <tt class="descname">pri</tt><a class="headerlink" href="#nghttp2_priority.pri" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The priority.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_rst_stream">
|
|
<tt class="descname">nghttp2_rst_stream</tt><a class="headerlink" href="#nghttp2_rst_stream" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The RST_STREAM frame. It has the following members:</p>
|
|
<dl class="member">
|
|
<dt id="nghttp2_rst_stream.hd">
|
|
<a class="reference internal" href="#nghttp2_frame_hd" title="nghttp2_frame_hd">nghttp2_frame_hd</a> <tt class="descname">hd</tt><a class="headerlink" href="#nghttp2_rst_stream.hd" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The frame header.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_rst_stream.error_code">
|
|
<a class="reference internal" href="#nghttp2_error_code" title="nghttp2_error_code">nghttp2_error_code</a> <tt class="descname">error_code</tt><a class="headerlink" href="#nghttp2_rst_stream.error_code" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The error code. See <a class="reference internal" href="#nghttp2_error_code" title="nghttp2_error_code"><tt class="xref c c-type docutils literal"><span class="pre">nghttp2_error_code</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_settings_entry">
|
|
<tt class="descname">nghttp2_settings_entry</tt><a class="headerlink" href="#nghttp2_settings_entry" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The SETTINGS ID/Value pair. It has the following members:</p>
|
|
<dl class="member">
|
|
<dt id="nghttp2_settings_entry.settings_id">
|
|
int32_t <tt class="descname">settings_id</tt><a class="headerlink" href="#nghttp2_settings_entry.settings_id" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The SETTINGS ID. See <a class="reference internal" href="#nghttp2_settings_id" title="nghttp2_settings_id"><tt class="xref c c-type docutils literal"><span class="pre">nghttp2_settings_id</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_settings_entry.value">
|
|
uint32_t <tt class="descname">value</tt><a class="headerlink" href="#nghttp2_settings_entry.value" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The value of this entry.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_settings">
|
|
<tt class="descname">nghttp2_settings</tt><a class="headerlink" href="#nghttp2_settings" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The SETTINGS frame. It has the following members:</p>
|
|
<dl class="member">
|
|
<dt id="nghttp2_settings.hd">
|
|
<a class="reference internal" href="#nghttp2_frame_hd" title="nghttp2_frame_hd">nghttp2_frame_hd</a> <tt class="descname">hd</tt><a class="headerlink" href="#nghttp2_settings.hd" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The frame header.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_settings.niv">
|
|
size_t <tt class="descname">niv</tt><a class="headerlink" href="#nghttp2_settings.niv" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The number of SETTINGS ID/Value pairs in <em>iv</em>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_settings.iv">
|
|
<a class="reference internal" href="#nghttp2_settings_entry" title="nghttp2_settings_entry">nghttp2_settings_entry</a> *<tt class="descname">iv</tt><a class="headerlink" href="#nghttp2_settings.iv" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The pointer to the array of SETTINGS ID/Value pair.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_push_promise">
|
|
<tt class="descname">nghttp2_push_promise</tt><a class="headerlink" href="#nghttp2_push_promise" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The PUSH_PROMISE frame. It has the following members:</p>
|
|
<dl class="member">
|
|
<dt id="nghttp2_push_promise.hd">
|
|
<a class="reference internal" href="#nghttp2_frame_hd" title="nghttp2_frame_hd">nghttp2_frame_hd</a> <tt class="descname">hd</tt><a class="headerlink" href="#nghttp2_push_promise.hd" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The frame header.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_push_promise.promised_stream_id">
|
|
int32_t <tt class="descname">promised_stream_id</tt><a class="headerlink" href="#nghttp2_push_promise.promised_stream_id" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The promised stream ID</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_push_promise.nva">
|
|
<a class="reference internal" href="#nghttp2_nv" title="nghttp2_nv">nghttp2_nv</a> *<tt class="descname">nva</tt><a class="headerlink" href="#nghttp2_push_promise.nva" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The name/value pairs.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_push_promise.nvlen">
|
|
size_t <tt class="descname">nvlen</tt><a class="headerlink" href="#nghttp2_push_promise.nvlen" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The number of name/value pairs in <em>nva</em>.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_ping">
|
|
<tt class="descname">nghttp2_ping</tt><a class="headerlink" href="#nghttp2_ping" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The PING frame. It has the following members:</p>
|
|
<dl class="member">
|
|
<dt id="nghttp2_ping.hd">
|
|
<a class="reference internal" href="#nghttp2_frame_hd" title="nghttp2_frame_hd">nghttp2_frame_hd</a> <tt class="descname">hd</tt><a class="headerlink" href="#nghttp2_ping.hd" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The frame header.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt>
|
|
<tt class="descname">uint8_t opaque_data[8]</tt></dt>
|
|
<dd><p>The opaque data</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_goaway">
|
|
<tt class="descname">nghttp2_goaway</tt><a class="headerlink" href="#nghttp2_goaway" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The GOAWAY frame. It has the following members:</p>
|
|
<dl class="member">
|
|
<dt id="nghttp2_goaway.hd">
|
|
<a class="reference internal" href="#nghttp2_frame_hd" title="nghttp2_frame_hd">nghttp2_frame_hd</a> <tt class="descname">hd</tt><a class="headerlink" href="#nghttp2_goaway.hd" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The frame header.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_goaway.last_stream_id">
|
|
int32_t <tt class="descname">last_stream_id</tt><a class="headerlink" href="#nghttp2_goaway.last_stream_id" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The last stream stream ID.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_goaway.error_code">
|
|
<a class="reference internal" href="#nghttp2_error_code" title="nghttp2_error_code">nghttp2_error_code</a> <tt class="descname">error_code</tt><a class="headerlink" href="#nghttp2_goaway.error_code" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The error code. See <a class="reference internal" href="#nghttp2_error_code" title="nghttp2_error_code"><tt class="xref c c-type docutils literal"><span class="pre">nghttp2_error_code</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_goaway.opaque_data">
|
|
uint8_t *<tt class="descname">opaque_data</tt><a class="headerlink" href="#nghttp2_goaway.opaque_data" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The additional debug data</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_goaway.opaque_data_len">
|
|
size_t <tt class="descname">opaque_data_len</tt><a class="headerlink" href="#nghttp2_goaway.opaque_data_len" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The length of <em>opaque_data</em> member.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_window_update">
|
|
<tt class="descname">nghttp2_window_update</tt><a class="headerlink" href="#nghttp2_window_update" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The WINDOW_UPDATE frame. It has the following members:</p>
|
|
<dl class="member">
|
|
<dt id="nghttp2_window_update.hd">
|
|
<a class="reference internal" href="#nghttp2_frame_hd" title="nghttp2_frame_hd">nghttp2_frame_hd</a> <tt class="descname">hd</tt><a class="headerlink" href="#nghttp2_window_update.hd" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The frame header.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_window_update.window_size_increment">
|
|
int32_t <tt class="descname">window_size_increment</tt><a class="headerlink" href="#nghttp2_window_update.window_size_increment" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The window size increment.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_frame">
|
|
<tt class="descname">nghttp2_frame</tt><a class="headerlink" href="#nghttp2_frame" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>This union includes all frames to pass them to various function
|
|
calls as nghttp2_frame type. The DATA frame is intentionally
|
|
omitted from here.</p>
|
|
<dl class="member">
|
|
<dt id="nghttp2_frame.hd">
|
|
<a class="reference internal" href="#nghttp2_frame_hd" title="nghttp2_frame_hd">nghttp2_frame_hd</a> <tt class="descname">hd</tt><a class="headerlink" href="#nghttp2_frame.hd" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The frame header, which is convenient to inspect frame header.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_frame.headers">
|
|
<a class="reference internal" href="#nghttp2_headers" title="nghttp2_headers">nghttp2_headers</a> <tt class="descname">headers</tt><a class="headerlink" href="#nghttp2_frame.headers" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The HEADERS frame.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_frame.priority">
|
|
<a class="reference internal" href="#nghttp2_priority" title="nghttp2_priority">nghttp2_priority</a> <tt class="descname">priority</tt><a class="headerlink" href="#nghttp2_frame.priority" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The PRIORITY frame.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_frame.rst_stream">
|
|
<a class="reference internal" href="#nghttp2_rst_stream" title="nghttp2_rst_stream">nghttp2_rst_stream</a> <tt class="descname">rst_stream</tt><a class="headerlink" href="#nghttp2_frame.rst_stream" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The RST_STREAM frame.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_frame.settings">
|
|
<a class="reference internal" href="#nghttp2_settings" title="nghttp2_settings">nghttp2_settings</a> <tt class="descname">settings</tt><a class="headerlink" href="#nghttp2_frame.settings" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The SETTINGS frame.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_frame.push_promise">
|
|
<a class="reference internal" href="#nghttp2_push_promise" title="nghttp2_push_promise">nghttp2_push_promise</a> <tt class="descname">push_promise</tt><a class="headerlink" href="#nghttp2_frame.push_promise" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The PUSH_PROMISE frame.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_frame.ping">
|
|
<a class="reference internal" href="#nghttp2_ping" title="nghttp2_ping">nghttp2_ping</a> <tt class="descname">ping</tt><a class="headerlink" href="#nghttp2_frame.ping" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The PING frame.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_frame.goaway">
|
|
<a class="reference internal" href="#nghttp2_goaway" title="nghttp2_goaway">nghttp2_goaway</a> <tt class="descname">goaway</tt><a class="headerlink" href="#nghttp2_frame.goaway" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The GOAWAY frame.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_frame.window_update">
|
|
<a class="reference internal" href="#nghttp2_window_update" title="nghttp2_window_update">nghttp2_window_update</a> <tt class="descname">window_update</tt><a class="headerlink" href="#nghttp2_frame.window_update" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The WINDOW_UPDATE frame.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_send_callback">
|
|
typedef ssize_t <tt class="descname">(*nghttp2_send_callback)</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, const uint8_t<em> *data</em>, size_t<em> length</em>, int<em> flags</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_send_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when <em>session</em> wants to send data to the
|
|
remote peer. The implementation of this function must send at most
|
|
<em>length</em> bytes of data stored in <em>data</em>. The <em>flags</em> is currently
|
|
not used and always 0. It must return the number of bytes sent if
|
|
it succeeds. If it cannot send any single byte without blocking,
|
|
it must return <a class="reference internal" href="#NGHTTP2_ERR_WOULDBLOCK" title="NGHTTP2_ERR_WOULDBLOCK"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_WOULDBLOCK</span></tt></a>. For other errors, it
|
|
must return <a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_recv_callback">
|
|
typedef ssize_t <tt class="descname">(*nghttp2_recv_callback)</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, uint8_t<em> *buf</em>, size_t<em> length</em>, int<em> flags</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_recv_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when <em>session</em> wants to receive data from
|
|
the remote peer. The implementation of this function must read at
|
|
most <em>length</em> bytes of data and store it in <em>buf</em>. The <em>flags</em> is
|
|
currently not used and always 0. It must return the number of bytes
|
|
written in <em>buf</em> if it succeeds. If it cannot read any single byte
|
|
without blocking, it must return <a class="reference internal" href="#NGHTTP2_ERR_WOULDBLOCK" title="NGHTTP2_ERR_WOULDBLOCK"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_WOULDBLOCK</span></tt></a>. If
|
|
it gets EOF before it reads any single byte, it must return
|
|
<a class="reference internal" href="#NGHTTP2_ERR_EOF" title="NGHTTP2_ERR_EOF"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_EOF</span></tt></a>. For other errors, it must return
|
|
<a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_on_frame_recv_callback">
|
|
typedef int <tt class="descname">(*nghttp2_on_frame_recv_callback)</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, <a class="reference internal" href="#nghttp2_frame" title="nghttp2_frame">nghttp2_frame</a><em> *frame</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_on_frame_recv_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked by <a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> when a
|
|
non-DATA frame is received.</p>
|
|
<p>The implementation of this function must return 0 if it
|
|
succeeds. If nonzero is returned, it is treated as fatal error and
|
|
<a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> and <a class="reference internal" href="#nghttp2_session_send" title="nghttp2_session_send"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_send()</span></tt></a> functions
|
|
immediately return <a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_on_invalid_frame_recv_callback">
|
|
typedef int <tt class="descname">(*nghttp2_on_invalid_frame_recv_callback)</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, <a class="reference internal" href="#nghttp2_frame" title="nghttp2_frame">nghttp2_frame</a><em> *frame</em>, <a class="reference internal" href="#nghttp2_error_code" title="nghttp2_error_code">nghttp2_error_code</a><em> error_code</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_on_invalid_frame_recv_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked by <a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> when an
|
|
invalid non-DATA frame is received. The <em>error_code</em> is one of the
|
|
<a class="reference internal" href="#nghttp2_error_code" title="nghttp2_error_code"><tt class="xref c c-macro docutils literal"><span class="pre">nghttp2_error_code</span></tt></a> and indicates the error. When this
|
|
callback function is invoked, the library automatically submits
|
|
either RST_STREAM or GOAWAY frame.</p>
|
|
<p>The implementation of this function must return 0 if it
|
|
succeeds. If nonzero is returned, it is treated as fatal error and
|
|
<a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> and <a class="reference internal" href="#nghttp2_session_send" title="nghttp2_session_send"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_send()</span></tt></a> functions
|
|
immediately return <a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_on_data_chunk_recv_callback">
|
|
typedef int <tt class="descname">(*nghttp2_on_data_chunk_recv_callback)</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, uint8_t<em> flags</em>, int32_t<em> stream_id</em>, const uint8_t<em> *data</em>, size_t<em> len</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_on_data_chunk_recv_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when a chunk of data in DATA frame is
|
|
received. The <em>stream_id</em> is the stream ID this DATA frame belongs
|
|
to. The <em>flags</em> is the flags of DATA frame which this data chunk is
|
|
contained. <tt class="docutils literal"><span class="pre">(flags</span> <span class="pre">&</span> <span class="pre">NGHTTP2_FLAG_END_STREAM)</span> <span class="pre">!=</span> <span class="pre">0</span></tt> does not
|
|
necessarily mean this chunk of data is the last one in the
|
|
stream. You should use <a class="reference internal" href="#nghttp2_on_data_recv_callback" title="nghttp2_on_data_recv_callback"><tt class="xref c c-type docutils literal"><span class="pre">nghttp2_on_data_recv_callback</span></tt></a> to
|
|
know all data frames are received.</p>
|
|
<p>The implementation of this function must return 0 if it
|
|
succeeds. If nonzero is returned, it is treated as fatal error and
|
|
<a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> and <a class="reference internal" href="#nghttp2_session_send" title="nghttp2_session_send"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_send()</span></tt></a> functions
|
|
immediately return <a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_on_data_recv_callback">
|
|
typedef int <tt class="descname">(*nghttp2_on_data_recv_callback)</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, uint16_t<em> length</em>, uint8_t<em> flags</em>, int32_t<em> stream_id</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_on_data_recv_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when DATA frame is received. The actual
|
|
data it contains are received by
|
|
<a class="reference internal" href="#nghttp2_on_data_chunk_recv_callback" title="nghttp2_on_data_chunk_recv_callback"><tt class="xref c c-type docutils literal"><span class="pre">nghttp2_on_data_chunk_recv_callback</span></tt></a>.</p>
|
|
<p>The implementation of this function must return 0 if it
|
|
succeeds. If nonzero is returned, it is treated as fatal error and
|
|
<a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> and <a class="reference internal" href="#nghttp2_session_send" title="nghttp2_session_send"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_send()</span></tt></a> functions
|
|
immediately return <a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_before_frame_send_callback">
|
|
typedef int <tt class="descname">(*nghttp2_before_frame_send_callback)</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, <a class="reference internal" href="#nghttp2_frame" title="nghttp2_frame">nghttp2_frame</a><em> *frame</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_before_frame_send_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked before the non-DATA frame <em>frame</em> is
|
|
sent. This may be useful, for example, to know the stream ID of
|
|
HEADERS and PUSH_PROMISE frame (see also
|
|
<a class="reference internal" href="#nghttp2_session_get_stream_user_data" title="nghttp2_session_get_stream_user_data"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_get_stream_user_data()</span></tt></a>), which is not assigned
|
|
when it was queued.</p>
|
|
<p>The implementation of this function must return 0 if it
|
|
succeeds. If nonzero is returned, it is treated as fatal error and
|
|
<a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> and <a class="reference internal" href="#nghttp2_session_send" title="nghttp2_session_send"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_send()</span></tt></a> functions
|
|
immediately return <a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_on_frame_send_callback">
|
|
typedef int <tt class="descname">(*nghttp2_on_frame_send_callback)</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, <a class="reference internal" href="#nghttp2_frame" title="nghttp2_frame">nghttp2_frame</a><em> *frame</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_on_frame_send_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked after the non-DATA frame <em>frame</em> is sent.</p>
|
|
<p>The implementation of this function must return 0 if it
|
|
succeeds. If nonzero is returned, it is treated as fatal error and
|
|
<a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> and <a class="reference internal" href="#nghttp2_session_send" title="nghttp2_session_send"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_send()</span></tt></a> functions
|
|
immediately return <a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_on_frame_not_send_callback">
|
|
typedef int <tt class="descname">(*nghttp2_on_frame_not_send_callback)</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, <a class="reference internal" href="#nghttp2_frame" title="nghttp2_frame">nghttp2_frame</a><em> *frame</em>, int<em> lib_error_code</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_on_frame_not_send_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked after the non-DATA frame <em>frame</em> is not
|
|
sent because of the error. The error is indicated by the
|
|
<em>lib_error_code</em>, which is one of the values defined in
|
|
<a class="reference internal" href="#nghttp2_error" title="nghttp2_error"><tt class="xref c c-type docutils literal"><span class="pre">nghttp2_error</span></tt></a>.</p>
|
|
<p>The implementation of this function must return 0 if it
|
|
succeeds. If nonzero is returned, it is treated as fatal error and
|
|
<a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> and <a class="reference internal" href="#nghttp2_session_send" title="nghttp2_session_send"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_send()</span></tt></a> functions
|
|
immediately return <a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_on_data_send_callback">
|
|
typedef int <tt class="descname">(*nghttp2_on_data_send_callback)</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, uint16_t<em> length</em>, uint8_t<em> flags</em>, int32_t<em> stream_id</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_on_data_send_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked after DATA frame is sent.</p>
|
|
<p>The implementation of this function must return 0 if it
|
|
succeeds. If nonzero is returned, it is treated as fatal error and
|
|
<a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> and <a class="reference internal" href="#nghttp2_session_send" title="nghttp2_session_send"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_send()</span></tt></a> functions
|
|
immediately return <a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_on_stream_close_callback">
|
|
typedef int <tt class="descname">(*nghttp2_on_stream_close_callback)</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, int32_t<em> stream_id</em>, <a class="reference internal" href="#nghttp2_error_code" title="nghttp2_error_code">nghttp2_error_code</a><em> error_code</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_on_stream_close_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when the stream <em>stream_id</em> is
|
|
closed. The reason of closure is indicated by the
|
|
<em>error_code</em>. The stream_user_data, which was specified in
|
|
<a class="reference internal" href="#nghttp2_submit_request" title="nghttp2_submit_request"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_submit_request()</span></tt></a> or <a class="reference internal" href="#nghttp2_submit_headers" title="nghttp2_submit_headers"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_submit_headers()</span></tt></a>, is
|
|
still available in this function.</p>
|
|
<p>The implementation of this function must return 0 if it
|
|
succeeds. If nonzero is returned, it is treated as fatal error and
|
|
<a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> and <a class="reference internal" href="#nghttp2_session_send" title="nghttp2_session_send"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_send()</span></tt></a> functions
|
|
immediately return <a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_on_request_recv_callback">
|
|
typedef int <tt class="descname">(*nghttp2_on_request_recv_callback)</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, int32_t<em> stream_id</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_on_request_recv_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when the request from the remote peer is
|
|
received. In other words, the frame with END_STREAM flag set is
|
|
received. In HTTP, this means HTTP request, including request
|
|
body, is fully received.</p>
|
|
<p>The implementation of this function must return 0 if it
|
|
succeeds. If nonzero is returned, it is treated as fatal error and
|
|
<a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> and <a class="reference internal" href="#nghttp2_session_send" title="nghttp2_session_send"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_send()</span></tt></a> functions
|
|
immediately return <a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_on_frame_recv_parse_error_callback">
|
|
typedef int <tt class="descname">(*nghttp2_on_frame_recv_parse_error_callback)</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, <a class="reference internal" href="#nghttp2_frame_type" title="nghttp2_frame_type">nghttp2_frame_type</a><em> type</em>, const uint8_t<em> *head</em>, size_t<em> headlen</em>, const uint8_t<em> *payload</em>, size_t<em> payloadlen</em>, int<em> lib_error_code</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_on_frame_recv_parse_error_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when the received control frame octets
|
|
could not be parsed correctly. The <em>type</em> indicates the type of
|
|
received non-DATA frame. The <em>head</em> is the pointer to the header of
|
|
the received frame. The <em>headlen</em> is the length of the
|
|
<em>head</em>. According to the spec, the <em>headlen</em> is always 8. In other
|
|
words, the <em>head</em> is the first 8 bytes of the received frame. The
|
|
<em>payload</em> is the pointer to the data portion of the received frame.
|
|
The <em>payloadlen</em> is the length of the <em>payload</em>. This is the data
|
|
after the length field. The <em>lib_error_code</em> is one of the error code
|
|
defined in <a class="reference internal" href="#nghttp2_error" title="nghttp2_error"><tt class="xref c c-macro docutils literal"><span class="pre">nghttp2_error</span></tt></a> and indicates the error.</p>
|
|
<p>The implementation of this function must return 0 if it
|
|
succeeds. If nonzero is returned, it is treated as fatal error and
|
|
<a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> and <a class="reference internal" href="#nghttp2_session_send" title="nghttp2_session_send"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_send()</span></tt></a> functions
|
|
immediately return <a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_on_unknown_frame_recv_callback">
|
|
typedef int <tt class="descname">(*nghttp2_on_unknown_frame_recv_callback)</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, const uint8_t<em> *head</em>, size_t<em> headlen</em>, const uint8_t<em> *payload</em>, size_t<em> payloadlen</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_on_unknown_frame_recv_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when the received frame type is
|
|
unknown. The <em>head</em> is the pointer to the header of the received
|
|
frame. The <em>headlen</em> is the length of the <em>head</em>. According to the
|
|
spec, the <em>headlen</em> is always 8. In other words, the <em>head</em> is the
|
|
first 8 bytes of the received frame. The <em>payload</em> is the pointer
|
|
to the data portion of the received frame. The <em>payloadlen</em> is the
|
|
length of the <em>payload</em>. This is the data after the length field.</p>
|
|
<p>The implementation of this function must return 0 if it
|
|
succeeds. If nonzero is returned, it is treated as fatal error and
|
|
<a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> and <a class="reference internal" href="#nghttp2_session_send" title="nghttp2_session_send"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_send()</span></tt></a> functions
|
|
immediately return <a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_session_callbacks">
|
|
<tt class="descname">nghttp2_session_callbacks</tt><a class="headerlink" href="#nghttp2_session_callbacks" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback functions.</p>
|
|
<dl class="member">
|
|
<dt id="nghttp2_session_callbacks.send_callback">
|
|
<a class="reference internal" href="#nghttp2_send_callback" title="nghttp2_send_callback">nghttp2_send_callback</a> <tt class="descname">send_callback</tt><a class="headerlink" href="#nghttp2_session_callbacks.send_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when the <em>session</em> wants to send data
|
|
to the remote peer.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_session_callbacks.recv_callback">
|
|
<a class="reference internal" href="#nghttp2_recv_callback" title="nghttp2_recv_callback">nghttp2_recv_callback</a> <tt class="descname">recv_callback</tt><a class="headerlink" href="#nghttp2_session_callbacks.recv_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when the <em>session</em> wants to receive
|
|
data from the remote peer.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_session_callbacks.on_frame_recv_callback">
|
|
<a class="reference internal" href="#nghttp2_on_frame_recv_callback" title="nghttp2_on_frame_recv_callback">nghttp2_on_frame_recv_callback</a> <tt class="descname">on_frame_recv_callback</tt><a class="headerlink" href="#nghttp2_session_callbacks.on_frame_recv_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked by <a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> when a
|
|
non-DATA frame is received.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_session_callbacks.on_invalid_frame_recv_callback">
|
|
<a class="reference internal" href="#nghttp2_on_invalid_frame_recv_callback" title="nghttp2_on_invalid_frame_recv_callback">nghttp2_on_invalid_frame_recv_callback</a> <tt class="descname">on_invalid_frame_recv_callback</tt><a class="headerlink" href="#nghttp2_session_callbacks.on_invalid_frame_recv_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked by <a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> when an
|
|
invalid non-DATA frame is received.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_session_callbacks.on_data_chunk_recv_callback">
|
|
<a class="reference internal" href="#nghttp2_on_data_chunk_recv_callback" title="nghttp2_on_data_chunk_recv_callback">nghttp2_on_data_chunk_recv_callback</a> <tt class="descname">on_data_chunk_recv_callback</tt><a class="headerlink" href="#nghttp2_session_callbacks.on_data_chunk_recv_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when a chunk of data in DATA frame is
|
|
received.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_session_callbacks.on_data_recv_callback">
|
|
<a class="reference internal" href="#nghttp2_on_data_recv_callback" title="nghttp2_on_data_recv_callback">nghttp2_on_data_recv_callback</a> <tt class="descname">on_data_recv_callback</tt><a class="headerlink" href="#nghttp2_session_callbacks.on_data_recv_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when DATA frame is received.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_session_callbacks.before_frame_send_callback">
|
|
<a class="reference internal" href="#nghttp2_before_frame_send_callback" title="nghttp2_before_frame_send_callback">nghttp2_before_frame_send_callback</a> <tt class="descname">before_frame_send_callback</tt><a class="headerlink" href="#nghttp2_session_callbacks.before_frame_send_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked before the non-DATA frame is sent.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_session_callbacks.on_frame_send_callback">
|
|
<a class="reference internal" href="#nghttp2_on_frame_send_callback" title="nghttp2_on_frame_send_callback">nghttp2_on_frame_send_callback</a> <tt class="descname">on_frame_send_callback</tt><a class="headerlink" href="#nghttp2_session_callbacks.on_frame_send_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked after the non-DATA frame is sent.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_session_callbacks.on_frame_not_send_callback">
|
|
<a class="reference internal" href="#nghttp2_on_frame_not_send_callback" title="nghttp2_on_frame_not_send_callback">nghttp2_on_frame_not_send_callback</a> <tt class="descname">on_frame_not_send_callback</tt><a class="headerlink" href="#nghttp2_session_callbacks.on_frame_not_send_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The callback function invoked when a non-DATA frame is not sent
|
|
because of an error.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_session_callbacks.on_data_send_callback">
|
|
<a class="reference internal" href="#nghttp2_on_data_send_callback" title="nghttp2_on_data_send_callback">nghttp2_on_data_send_callback</a> <tt class="descname">on_data_send_callback</tt><a class="headerlink" href="#nghttp2_session_callbacks.on_data_send_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked after DATA frame is sent.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_session_callbacks.on_stream_close_callback">
|
|
<a class="reference internal" href="#nghttp2_on_stream_close_callback" title="nghttp2_on_stream_close_callback">nghttp2_on_stream_close_callback</a> <tt class="descname">on_stream_close_callback</tt><a class="headerlink" href="#nghttp2_session_callbacks.on_stream_close_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when the stream is closed.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_session_callbacks.on_request_recv_callback">
|
|
<a class="reference internal" href="#nghttp2_on_request_recv_callback" title="nghttp2_on_request_recv_callback">nghttp2_on_request_recv_callback</a> <tt class="descname">on_request_recv_callback</tt><a class="headerlink" href="#nghttp2_session_callbacks.on_request_recv_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when request from the remote peer is
|
|
received.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_session_callbacks.nghttp2_on_frame_recv_parse_error_callback">
|
|
<tt class="descname">nghttp2_on_frame_recv_parse_error_callback</tt><a class="headerlink" href="#nghttp2_session_callbacks.nghttp2_on_frame_recv_parse_error_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when the received non-DATA frame octets
|
|
could not be parsed correctly.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="member">
|
|
<dt id="nghttp2_session_callbacks.on_unknown_frame_recv_callback">
|
|
<a class="reference internal" href="#nghttp2_on_unknown_frame_recv_callback" title="nghttp2_on_unknown_frame_recv_callback">nghttp2_on_unknown_frame_recv_callback</a> <tt class="descname">on_unknown_frame_recv_callback</tt><a class="headerlink" href="#nghttp2_session_callbacks.on_unknown_frame_recv_callback" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Callback function invoked when the received frame type is
|
|
unknown.</p>
|
|
</dd></dl>
|
|
|
|
</dd></dl>
|
|
|
|
<dl class="type">
|
|
<dt id="nghttp2_gzip">
|
|
<tt class="descname">nghttp2_gzip</tt><a class="headerlink" href="#nghttp2_gzip" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>The gzip stream to inflate data. The details of this structure are
|
|
intentionally hidden from the public API.</p>
|
|
</dd></dl>
|
|
|
|
</div>
|
|
<div class="section" id="functions">
|
|
<h2>Functions<a class="headerlink" href="#functions" title="Permalink to this headline">¶</a></h2>
|
|
<dl class="function">
|
|
<dt id="nghttp2_session_client_new">
|
|
int <tt class="descname">nghttp2_session_client_new</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> **session_ptr</em>, const <a class="reference internal" href="#nghttp2_session_callbacks" title="nghttp2_session_callbacks">nghttp2_session_callbacks</a><em> *callbacks</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_session_client_new" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Initializes <em>*session_ptr</em> for client use. The all members of
|
|
<em>callbacks</em> are copied to <em>*session_ptr</em>. Therefore <em>*session_ptr</em>
|
|
does not store <em>callbacks</em>. <em>user_data</em> is an arbitrary user
|
|
supplied data, which will be passed to the callback functions.</p>
|
|
<p>The <a class="reference internal" href="#nghttp2_session_callbacks.send_callback" title="nghttp2_session_callbacks.send_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.send_callback</span></tt></a> must be
|
|
specified. If the application code uses <a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a>,
|
|
the <a class="reference internal" href="#nghttp2_session_callbacks.recv_callback" title="nghttp2_session_callbacks.recv_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.recv_callback</span></tt></a> must be
|
|
specified. The other members of <em>callbacks</em> can be <tt class="docutils literal"><span class="pre">NULL</span></tt>.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_session_server_new">
|
|
int <tt class="descname">nghttp2_session_server_new</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> **session_ptr</em>, const <a class="reference internal" href="#nghttp2_session_callbacks" title="nghttp2_session_callbacks">nghttp2_session_callbacks</a><em> *callbacks</em>, void<em> *user_data</em><big>)</big><a class="headerlink" href="#nghttp2_session_server_new" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Initializes <em>*session_ptr</em> for server use. The all members of
|
|
<em>callbacks</em> are copied to <em>*session_ptr</em>. Therefore <em>*session_ptr</em>
|
|
does not store <em>callbacks</em>. <em>user_data</em> is an arbitrary user
|
|
supplied data, which will be passed to the callback functions.</p>
|
|
<p>The <a class="reference internal" href="#nghttp2_session_callbacks.send_callback" title="nghttp2_session_callbacks.send_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.send_callback</span></tt></a> must be
|
|
specified. If the application code uses <a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a>,
|
|
the <a class="reference internal" href="#nghttp2_session_callbacks.recv_callback" title="nghttp2_session_callbacks.recv_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.recv_callback</span></tt></a> must be
|
|
specified. The other members of <em>callbacks</em> can be <tt class="docutils literal"><span class="pre">NULL</span></tt>.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_session_del">
|
|
void <tt class="descname">nghttp2_session_del</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em><big>)</big><a class="headerlink" href="#nghttp2_session_del" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Frees any resources allocated for <em>session</em>. If <em>session</em> is
|
|
<tt class="docutils literal"><span class="pre">NULL</span></tt>, this function does nothing.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_session_set_option">
|
|
int <tt class="descname">nghttp2_session_set_option</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, int<em> optname</em>, void<em> *optval</em>, size_t<em> optlen</em><big>)</big><a class="headerlink" href="#nghttp2_session_set_option" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Sets the configuration option for the <em>session</em>. The <em>optname</em> is
|
|
one of <a class="reference internal" href="#nghttp2_opt" title="nghttp2_opt"><tt class="xref c c-type docutils literal"><span class="pre">nghttp2_opt</span></tt></a>. The <em>optval</em> is the pointer to the
|
|
option value and the <em>optlen</em> is the size of <em>*optval</em>. The
|
|
required type of <em>optval</em> varies depending on the <em>optname</em>. See
|
|
below.</p>
|
|
<p>The following <em>optname</em> are supported:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_OPT_NO_AUTO_STREAM_WINDOW_UPDATE" title="NGHTTP2_OPT_NO_AUTO_STREAM_WINDOW_UPDATE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_OPT_NO_AUTO_STREAM_WINDOW_UPDATE</span></tt></a></dt>
|
|
<dd>The <em>optval</em> must be a pointer to <tt class="docutils literal"><span class="pre">int</span></tt>. If the <em>*optval</em> is
|
|
nonzero, the library will not send WINDOW_UPDATE for a stream
|
|
automatically. Therefore, the application is responsible for
|
|
sending WINDOW_UPDATE using
|
|
<a class="reference internal" href="#nghttp2_submit_window_update" title="nghttp2_submit_window_update"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_submit_window_update()</span></tt></a>. This option defaults to 0.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_OPT_NO_AUTO_CONNECTION_WINDOW_UPDATE" title="NGHTTP2_OPT_NO_AUTO_CONNECTION_WINDOW_UPDATE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_OPT_NO_AUTO_CONNECTION_WINDOW_UPDATE</span></tt></a></dt>
|
|
<dd>The <em>optval</em> must be a pointer to <tt class="docutils literal"><span class="pre">int</span></tt>. If the <em>*optval</em> is
|
|
nonzero, the library will not send WINDOW_UPDATE for connection
|
|
automatically. Therefore, the application is responsible for
|
|
sending WINDOW_UPDATE using
|
|
<a class="reference internal" href="#nghttp2_submit_window_update" title="nghttp2_submit_window_update"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_submit_window_update()</span></tt></a>. This option defaults to 0.</dd>
|
|
</dl>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_INVALID_ARGUMENT" title="NGHTTP2_ERR_INVALID_ARGUMENT"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_INVALID_ARGUMENT</span></tt></a></dt>
|
|
<dd>The <em>optname</em> is not supported; or the <em>optval</em> and/or the
|
|
<em>optlen</em> are invalid.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_session_send">
|
|
int <tt class="descname">nghttp2_session_send</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em><big>)</big><a class="headerlink" href="#nghttp2_session_send" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Sends pending frames to the remote peer.</p>
|
|
<p>This function retrieves the highest prioritized frame from the
|
|
outbound queue and sends it to the remote peer. It does this as
|
|
many as possible until the user callback
|
|
<a class="reference internal" href="#nghttp2_session_callbacks.send_callback" title="nghttp2_session_callbacks.send_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.send_callback</span></tt></a> returns
|
|
<a class="reference internal" href="#NGHTTP2_ERR_WOULDBLOCK" title="NGHTTP2_ERR_WOULDBLOCK"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_WOULDBLOCK</span></tt></a> or the outbound queue becomes empty.
|
|
This function calls several callback functions which are passed
|
|
when initializing the <em>session</em>. Here is the simple time chart
|
|
which tells when each callback is invoked:</p>
|
|
<ol class="arabic simple">
|
|
<li>Get the next frame to send from outbound queue.</li>
|
|
<li>Prepare transmission of the frame.</li>
|
|
<li>If the control frame cannot be sent because some preconditions
|
|
are not met (e.g., request HEADERS cannot be sent after
|
|
GOAWAY),
|
|
<tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.on_ctrl_not_send_callback</span></tt> is
|
|
invoked. Abort the following steps.</li>
|
|
<li>If the frame is request HEADERS, the stream is opened
|
|
here.</li>
|
|
<li><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.before_ctrl_send_callback</span></tt> is
|
|
invoked.</li>
|
|
<li><a class="reference internal" href="#nghttp2_session_callbacks.send_callback" title="nghttp2_session_callbacks.send_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.send_callback</span></tt></a> is invoked one
|
|
or more times to send the frame.</li>
|
|
<li>If the frame is a control frame,
|
|
<tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.on_ctrl_send_callback</span></tt> is
|
|
invoked.</li>
|
|
<li>If the frame is a DATA frame,
|
|
<a class="reference internal" href="#nghttp2_session_callbacks.on_data_send_callback" title="nghttp2_session_callbacks.on_data_send_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.on_data_send_callback</span></tt></a> is
|
|
invoked.</li>
|
|
<li>If the transmission of the frame triggers closure of the stream,
|
|
the stream is closed and
|
|
<a class="reference internal" href="#nghttp2_session_callbacks.on_stream_close_callback" title="nghttp2_session_callbacks.on_stream_close_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.on_stream_close_callback</span></tt></a> is
|
|
invoked.</li>
|
|
</ol>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a></dt>
|
|
<dd>The callback function failed.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_session_recv">
|
|
int <tt class="descname">nghttp2_session_recv</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em><big>)</big><a class="headerlink" href="#nghttp2_session_recv" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Receives frames from the remote peer.</p>
|
|
<p>This function receives as many frames as possible until the user
|
|
callback <a class="reference internal" href="#nghttp2_session_callbacks.recv_callback" title="nghttp2_session_callbacks.recv_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.recv_callback</span></tt></a> returns
|
|
<a class="reference internal" href="#NGHTTP2_ERR_WOULDBLOCK" title="NGHTTP2_ERR_WOULDBLOCK"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_WOULDBLOCK</span></tt></a>. This function calls several
|
|
callback functions which are passed when initializing the
|
|
<em>session</em>. Here is the simple time chart which tells when each
|
|
callback is invoked:</p>
|
|
<ol class="arabic simple">
|
|
<li><a class="reference internal" href="#nghttp2_session_callbacks.recv_callback" title="nghttp2_session_callbacks.recv_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.recv_callback</span></tt></a> is invoked one
|
|
or more times to receive frame header.</li>
|
|
<li>If the frame is DATA frame:</li>
|
|
</ol>
|
|
<blockquote>
|
|
<div><dl class="docutils">
|
|
<dt>2.1. <a class="reference internal" href="#nghttp2_session_callbacks.recv_callback" title="nghttp2_session_callbacks.recv_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.recv_callback</span></tt></a> is invoked</dt>
|
|
<dd>to receive DATA payload. For each chunk of data,
|
|
<a class="reference internal" href="#nghttp2_session_callbacks.on_data_chunk_recv_callback" title="nghttp2_session_callbacks.on_data_chunk_recv_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.on_data_chunk_recv_callback</span></tt></a>
|
|
is invoked.</dd>
|
|
<dt>2.2. If one DATA frame is completely received,</dt>
|
|
<dd><a class="reference internal" href="#nghttp2_session_callbacks.on_data_recv_callback" title="nghttp2_session_callbacks.on_data_recv_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.on_data_recv_callback</span></tt></a> is
|
|
invoked. If the frame is the final frame of the request,
|
|
<a class="reference internal" href="#nghttp2_session_callbacks.on_request_recv_callback" title="nghttp2_session_callbacks.on_request_recv_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.on_request_recv_callback</span></tt></a>
|
|
is invoked. If the reception of the frame triggers the
|
|
closure of the stream,
|
|
<a class="reference internal" href="#nghttp2_session_callbacks.on_stream_close_callback" title="nghttp2_session_callbacks.on_stream_close_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.on_stream_close_callback</span></tt></a>
|
|
is invoked.</dd>
|
|
</dl>
|
|
</div></blockquote>
|
|
<ol class="arabic simple" start="3">
|
|
<li>If the frame is the control frame:</li>
|
|
</ol>
|
|
<blockquote>
|
|
<div><dl class="docutils">
|
|
<dt>3.1. <a class="reference internal" href="#nghttp2_session_callbacks.recv_callback" title="nghttp2_session_callbacks.recv_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.recv_callback</span></tt></a> is invoked</dt>
|
|
<dd>one or more times to receive whole frame.</dd>
|
|
<dt>3.2. If the received frame is valid,</dt>
|
|
<dd><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.on_ctrl_recv_callback</span></tt> is
|
|
invoked. If the frame is the final frame of the request,
|
|
<a class="reference internal" href="#nghttp2_session_callbacks.on_request_recv_callback" title="nghttp2_session_callbacks.on_request_recv_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.on_request_recv_callback</span></tt></a>
|
|
is invoked. If the reception of the frame triggers the
|
|
closure of the stream,
|
|
<a class="reference internal" href="#nghttp2_session_callbacks.on_stream_close_callback" title="nghttp2_session_callbacks.on_stream_close_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.on_stream_close_callback</span></tt></a>
|
|
is invoked.</dd>
|
|
<dt>3.3. If the received frame is unpacked but is interpreted as</dt>
|
|
<dd>invalid,
|
|
<tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.on_invalid_ctrl_recv_callback</span></tt>
|
|
is invoked.</dd>
|
|
<dt>3.4. If the received frame could not be unpacked correctly,</dt>
|
|
<dd><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.on_ctrl_recv_parse_error_callback</span></tt>
|
|
is invoked.</dd>
|
|
<dt>3.5. If the received frame type is unknown,</dt>
|
|
<dd><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.on_unknown_ctrl_recv_callback</span></tt>
|
|
is invoked.</dd>
|
|
</dl>
|
|
</div></blockquote>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_EOF" title="NGHTTP2_ERR_EOF"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_EOF</span></tt></a></dt>
|
|
<dd>The remote peer did shutdown on the connection.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_CALLBACK_FAILURE" title="NGHTTP2_ERR_CALLBACK_FAILURE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_CALLBACK_FAILURE</span></tt></a></dt>
|
|
<dd>The callback function failed.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_session_mem_recv">
|
|
ssize_t <tt class="descname">nghttp2_session_mem_recv</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, const uint8_t<em> *in</em>, size_t<em> inlen</em><big>)</big><a class="headerlink" href="#nghttp2_session_mem_recv" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Processes data <em>in</em> as an input from the remote endpoint. The
|
|
<em>inlen</em> indicates the number of bytes in the <em>in</em>.</p>
|
|
<p>This function behaves like <a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a> except that it
|
|
does not use <a class="reference internal" href="#nghttp2_session_callbacks.recv_callback" title="nghttp2_session_callbacks.recv_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.recv_callback</span></tt></a> to
|
|
receive data; the <em>in</em> is the only data for the invocation of this
|
|
function. If all bytes are processed, this function returns. The
|
|
other callbacks are called in the same way as they are in
|
|
<a class="reference internal" href="#nghttp2_session_recv" title="nghttp2_session_recv"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_recv()</span></tt></a>.</p>
|
|
<p>In the current implementation, this function always tries to
|
|
processes all input data unless an error occurs.</p>
|
|
<p>This function returns the number of processed bytes, or one of the
|
|
following negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_session_resume_data">
|
|
int <tt class="descname">nghttp2_session_resume_data</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, int32_t<em> stream_id</em><big>)</big><a class="headerlink" href="#nghttp2_session_resume_data" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Puts back previously deferred DATA frame in the stream <em>stream_id</em>
|
|
to the outbound queue.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_INVALID_ARGUMENT" title="NGHTTP2_ERR_INVALID_ARGUMENT"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_INVALID_ARGUMENT</span></tt></a></dt>
|
|
<dd>The stream does not exist or no deferred data exist.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_session_want_read">
|
|
int <tt class="descname">nghttp2_session_want_read</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em><big>)</big><a class="headerlink" href="#nghttp2_session_want_read" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Returns nonzero value if <em>session</em> wants to receive data from the
|
|
remote peer.</p>
|
|
<p>If both <a class="reference internal" href="#nghttp2_session_want_read" title="nghttp2_session_want_read"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_want_read()</span></tt></a> and
|
|
<a class="reference internal" href="#nghttp2_session_want_write" title="nghttp2_session_want_write"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_want_write()</span></tt></a> return 0, the application should
|
|
drop the connection.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_session_want_write">
|
|
int <tt class="descname">nghttp2_session_want_write</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em><big>)</big><a class="headerlink" href="#nghttp2_session_want_write" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Returns nonzero value if <em>session</em> wants to send data to the remote
|
|
peer.</p>
|
|
<p>If both <a class="reference internal" href="#nghttp2_session_want_read" title="nghttp2_session_want_read"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_want_read()</span></tt></a> and
|
|
<a class="reference internal" href="#nghttp2_session_want_write" title="nghttp2_session_want_write"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_want_write()</span></tt></a> return 0, the application should
|
|
drop the connection.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_session_get_stream_user_data">
|
|
void* <tt class="descname">nghttp2_session_get_stream_user_data</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, int32_t<em> stream_id</em><big>)</big><a class="headerlink" href="#nghttp2_session_get_stream_user_data" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Returns stream_user_data for the stream <em>stream_id</em>. The
|
|
stream_user_data is provided by <a class="reference internal" href="#nghttp2_submit_request" title="nghttp2_submit_request"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_submit_request()</span></tt></a> or
|
|
<tt class="xref c c-func docutils literal"><span class="pre">nghttp2_submit_syn_stream()</span></tt>. If the stream is initiated by the
|
|
remote endpoint, stream_user_data is always <tt class="docutils literal"><span class="pre">NULL</span></tt>. If the stream
|
|
is initiated by the local endpoint and <tt class="docutils literal"><span class="pre">NULL</span></tt> is given in
|
|
<a class="reference internal" href="#nghttp2_submit_request" title="nghttp2_submit_request"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_submit_request()</span></tt></a> or <tt class="xref c c-func docutils literal"><span class="pre">nghttp2_submit_syn_stream()</span></tt>, then
|
|
this function returns <tt class="docutils literal"><span class="pre">NULL</span></tt>. If the stream does not exist, this
|
|
function returns <tt class="docutils literal"><span class="pre">NULL</span></tt>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_session_get_outbound_queue_size">
|
|
size_t <tt class="descname">nghttp2_session_get_outbound_queue_size</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em><big>)</big><a class="headerlink" href="#nghttp2_session_get_outbound_queue_size" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Returns the number of frames in the outbound queue. This does not
|
|
include the deferred DATA frames.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_session_fail_session">
|
|
int <tt class="descname">nghttp2_session_fail_session</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, <a class="reference internal" href="#nghttp2_error_code" title="nghttp2_error_code">nghttp2_error_code</a><em> error_code</em><big>)</big><a class="headerlink" href="#nghttp2_session_fail_session" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Submits GOAWAY frame with the given <em>error_code</em>.</p>
|
|
<p>This function should be called when the connection should be
|
|
terminated after sending GOAWAY. If the remaining streams should be
|
|
processed after GOAWAY, use <a class="reference internal" href="#nghttp2_submit_goaway" title="nghttp2_submit_goaway"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_submit_goaway()</span></tt></a> instead.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_session_upgrade">
|
|
int <tt class="descname">nghttp2_session_upgrade</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, const uint8_t<em> *settings_payload</em>, size_t<em> settings_payloadlen</em>, void<em> *stream_user_data</em><big>)</big><a class="headerlink" href="#nghttp2_session_upgrade" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Performs post-process of HTTP Upgrade request. This function can be
|
|
called from both client and server, but the behavior is very
|
|
different in each other.</p>
|
|
<p>If called from client side, the <em>settings_payload</em> must be the
|
|
value sent in <tt class="docutils literal"><span class="pre">HTTP2-Settings</span></tt> header field and must be decoded
|
|
by base64url decoder. The <em>settings_payloadlen</em> is the length of
|
|
<em>settings_payload</em>. The <em>settings_payload</em> is unpacked and its
|
|
setting values will be submitted using
|
|
<a class="reference internal" href="#nghttp2_submit_settings" title="nghttp2_submit_settings"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_submit_settings()</span></tt></a>. This means that the client application
|
|
code does not need to submit SETTINGS by itself. The stream with
|
|
stream ID=1 is opened and the <em>stream_user_data</em> is used for its
|
|
stream_user_data. The opened stream becomes half-closed (local)
|
|
state.</p>
|
|
<p>If called from server side, the <em>settings_payload</em> must be the
|
|
value received in <tt class="docutils literal"><span class="pre">HTTP2-Settings</span></tt> header field and must be
|
|
decoded by base64url decoder. The <em>settings_payloadlen</em> is the
|
|
length of <em>settings_payload</em>. It is treated as if the SETTINGS
|
|
frame with that payload is received. Thus, callback functions for
|
|
the reception of SETTINGS frame will be invoked. The stream with
|
|
stream ID=1 is opened. The <em>stream_user_data</em> is ignored. The
|
|
opened stream becomes half-closed (remote).</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_INVALID_ARGUMENT" title="NGHTTP2_ERR_INVALID_ARGUMENT"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_INVALID_ARGUMENT</span></tt></a></dt>
|
|
<dd>The <em>settings_payload</em> is badly formed.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_PROTO" title="NGHTTP2_ERR_PROTO"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_PROTO</span></tt></a></dt>
|
|
<dd>The stream ID 1 is already used or closed; or is not available;
|
|
or the <em>settings_payload</em> does not include both
|
|
<a class="reference internal" href="#NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS" title="NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS</span></tt></a> and
|
|
<a class="reference internal" href="#NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE" title="NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE</span></tt></a>.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_pack_settings_payload">
|
|
ssize_t <tt class="descname">nghttp2_pack_settings_payload</tt><big>(</big>uint8_t<em> *buf</em>, <a class="reference internal" href="#nghttp2_settings_entry" title="nghttp2_settings_entry">nghttp2_settings_entry</a><em> *iv</em>, size_t<em> niv</em><big>)</big><a class="headerlink" href="#nghttp2_pack_settings_payload" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Serializes the SETTINGS values <em>iv</em> in the <em>buf</em>. The number of
|
|
entry pointed by <em>iv</em> array is given by the <em>niv</em>. This function
|
|
may reorder the pointers in <em>iv</em>. The <em>buf</em> must have enough region
|
|
to hold serialized data. The required space for the <em>niv</em> entries
|
|
are <tt class="docutils literal"><span class="pre">8*niv</span></tt> bytes. This function is used mainly for creating
|
|
SETTINGS payload to be sent with <tt class="docutils literal"><span class="pre">HTTP2-Settings</span></tt> header field in
|
|
HTTP Upgrade request. The data written in <em>buf</em> is not still
|
|
base64url encoded and the application is responsible for encoding.</p>
|
|
<p>This function returns the number of bytes written in <em>buf</em>, or one
|
|
of the following negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_INVALID_ARGUMENT" title="NGHTTP2_ERR_INVALID_ARGUMENT"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_INVALID_ARGUMENT</span></tt></a></dt>
|
|
<dd>The <em>iv</em> contains duplicate settings ID or invalid value.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_strerror">
|
|
const char* <tt class="descname">nghttp2_strerror</tt><big>(</big>int<em> lib_error_code</em><big>)</big><a class="headerlink" href="#nghttp2_strerror" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Returns string describing the <em>lib_error_code</em>. The
|
|
<em>lib_error_code</em> must be one of the <a class="reference internal" href="#nghttp2_error" title="nghttp2_error"><tt class="xref c c-macro docutils literal"><span class="pre">nghttp2_error</span></tt></a>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_submit_request">
|
|
int <tt class="descname">nghttp2_submit_request</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, int32_t<em> pri</em>, const char<em> **nv</em>, const <a class="reference internal" href="#nghttp2_data_provider" title="nghttp2_data_provider">nghttp2_data_provider</a><em> *data_prd</em>, void<em> *stream_user_data</em><big>)</big><a class="headerlink" href="#nghttp2_submit_request" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Submits HEADERS frame and optionally one or more DATA frames.</p>
|
|
<p>The <em>pri</em> is priority of this request. 0 is the highest priority
|
|
value and <a class="reference internal" href="#NGHTTP2_PRI_LOWEST" title="NGHTTP2_PRI_LOWEST"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_PRI_LOWEST</span></tt></a> is the lowest value.</p>
|
|
<p>The <em>nv</em> contains the name/value pairs. For i >= 0, <tt class="docutils literal"><span class="pre">nv[2*i]</span></tt>
|
|
contains a pointer to the name string and <tt class="docutils literal"><span class="pre">nv[2*i+1]</span></tt> contains a
|
|
pointer to the value string. The one beyond last value must be
|
|
<tt class="docutils literal"><span class="pre">NULL</span></tt>. That is, if the <em>nv</em> contains N name/value pairs,
|
|
<tt class="docutils literal"><span class="pre">nv[2*N]</span></tt> must be <tt class="docutils literal"><span class="pre">NULL</span></tt>.</p>
|
|
<p>The <em>nv</em> must include following name/value pairs:</p>
|
|
<dl class="docutils">
|
|
<dt><tt class="docutils literal"><span class="pre">:method</span></tt></dt>
|
|
<dd>HTTP method (e.g., <tt class="docutils literal"><span class="pre">GET</span></tt>, <tt class="docutils literal"><span class="pre">POST</span></tt>, <tt class="docutils literal"><span class="pre">HEAD</span></tt>, etc)</dd>
|
|
<dt><tt class="docutils literal"><span class="pre">:scheme</span></tt></dt>
|
|
<dd>URI scheme (e.g., <tt class="docutils literal"><span class="pre">https</span></tt>)</dd>
|
|
<dt><tt class="docutils literal"><span class="pre">:path</span></tt></dt>
|
|
<dd>Absolute path and parameters of this request (e.g., <tt class="docutils literal"><span class="pre">/foo</span></tt>,
|
|
<tt class="docutils literal"><span class="pre">/foo;bar;haz?h=j&y=123</span></tt>)</dd>
|
|
<dt><tt class="docutils literal"><span class="pre">:host</span></tt></dt>
|
|
<dd>The hostport portion of the URI for this request (e.g.,
|
|
<tt class="docutils literal"><span class="pre">example.org:443</span></tt>). This is the same as the HTTP “Host” header
|
|
field.</dd>
|
|
</dl>
|
|
<p>This function creates copies of all name/value pairs in <em>nv</em>. It
|
|
also lower-cases all names in <em>nv</em>.</p>
|
|
<p>If <em>data_prd</em> is not <tt class="docutils literal"><span class="pre">NULL</span></tt>, it provides data which will be sent
|
|
in subsequent DATA frames. In this case, a method that allows
|
|
request message bodies
|
|
(<a class="reference external" href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9">http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9</a>) must
|
|
be specified with <tt class="docutils literal"><span class="pre">:method</span></tt> key in <em>nv</em> (e.g. <tt class="docutils literal"><span class="pre">POST</span></tt>). This
|
|
function does not take ownership of the <em>data_prd</em>. The function
|
|
copies the members of the <em>data_prd</em>. If <em>data_prd</em> is <tt class="docutils literal"><span class="pre">NULL</span></tt>,
|
|
HEADERS have END_STREAM set. The <em>stream_user_data</em> is data
|
|
associated to the stream opened by this request and can be an
|
|
arbitrary pointer, which can be retrieved later by
|
|
<a class="reference internal" href="#nghttp2_session_get_stream_user_data" title="nghttp2_session_get_stream_user_data"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_get_stream_user_data()</span></tt></a>.</p>
|
|
<p>Since the library reorders the frames and tries to send the highest
|
|
prioritized one first and the HTTP/2.0 specification requires the
|
|
stream ID must be strictly increasing, the stream ID of this
|
|
request cannot be known until it is about to sent. To know the
|
|
stream ID of the request, the application can use
|
|
<tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.before_ctrl_send_callback</span></tt>. This
|
|
callback is called just before the frame is sent. For HEADERS
|
|
frame, the argument frame has the stream ID assigned. Also since
|
|
the stream is already opened,
|
|
<a class="reference internal" href="#nghttp2_session_get_stream_user_data" title="nghttp2_session_get_stream_user_data"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_session_get_stream_user_data()</span></tt></a> can be used to get
|
|
<em>stream_user_data</em> to identify which HEADERS we are processing.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_INVALID_ARGUMENT" title="NGHTTP2_ERR_INVALID_ARGUMENT"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_INVALID_ARGUMENT</span></tt></a></dt>
|
|
<dd>The <em>pri</em> is invalid; or the <em>nv</em> includes empty name or
|
|
<tt class="docutils literal"><span class="pre">NULL</span></tt> value.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_submit_response">
|
|
int <tt class="descname">nghttp2_submit_response</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, int32_t<em> stream_id</em>, const char<em> **nv</em>, const <a class="reference internal" href="#nghttp2_data_provider" title="nghttp2_data_provider">nghttp2_data_provider</a><em> *data_prd</em><big>)</big><a class="headerlink" href="#nghttp2_submit_response" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Submits response HEADERS frame and optionally one or more DATA
|
|
frames against the stream <em>stream_id</em>.</p>
|
|
<p>The <em>nv</em> contains the name/value pairs. For i >= 0, <tt class="docutils literal"><span class="pre">nv[2*i]</span></tt>
|
|
contains a pointer to the name string and <tt class="docutils literal"><span class="pre">nv[2*i+1]</span></tt> contains a
|
|
pointer to the value string. The one beyond last value must be
|
|
<tt class="docutils literal"><span class="pre">NULL</span></tt>. That is, if the <em>nv</em> contains N name/value pairs,
|
|
<tt class="docutils literal"><span class="pre">nv[2*N]</span></tt> must be <tt class="docutils literal"><span class="pre">NULL</span></tt>.</p>
|
|
<p>The <em>nv</em> must include following name/value pairs:</p>
|
|
<dl class="docutils">
|
|
<dt><tt class="docutils literal"><span class="pre">:status</span></tt></dt>
|
|
<dd>HTTP status code (e.g., <tt class="docutils literal"><span class="pre">200</span></tt> or <tt class="docutils literal"><span class="pre">200</span> <span class="pre">OK</span></tt>)</dd>
|
|
</dl>
|
|
<p>This function creates copies of all name/value pairs in <em>nv</em>. It
|
|
also lower-cases all names in <em>nv</em>.</p>
|
|
<p>If <em>data_prd</em> is not <tt class="docutils literal"><span class="pre">NULL</span></tt>, it provides data which will be sent
|
|
in subsequent DATA frames. This function does not take ownership
|
|
of the <em>data_prd</em>. The function copies the members of the
|
|
<em>data_prd</em>. If <em>data_prd</em> is <tt class="docutils literal"><span class="pre">NULL</span></tt>, HEADERS will have
|
|
END_STREAM flag set.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_INVALID_ARGUMENT" title="NGHTTP2_ERR_INVALID_ARGUMENT"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_INVALID_ARGUMENT</span></tt></a></dt>
|
|
<dd>The <em>nv</em> includes empty name or <tt class="docutils literal"><span class="pre">NULL</span></tt> value.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_submit_headers">
|
|
int <tt class="descname">nghttp2_submit_headers</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, uint8_t<em> flags</em>, int32_t<em> stream_id</em>, int32_t<em> pri</em>, const char<em> **nv</em>, void<em> *stream_user_data</em><big>)</big><a class="headerlink" href="#nghttp2_submit_headers" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Submits HEADERS frame. The <em>flags</em> is bitwise OR of the
|
|
following values:</p>
|
|
<ul class="simple">
|
|
<li><a class="reference internal" href="#NGHTTP2_FLAG_END_STREAM" title="NGHTTP2_FLAG_END_STREAM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_FLAG_END_STREAM</span></tt></a></li>
|
|
<li><a class="reference internal" href="#NGHTTP2_FLAG_END_HEADERS" title="NGHTTP2_FLAG_END_HEADERS"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_FLAG_END_HEADERS</span></tt></a></li>
|
|
<li><a class="reference internal" href="#NGHTTP2_FLAG_PRIORITY" title="NGHTTP2_FLAG_PRIORITY"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_FLAG_PRIORITY</span></tt></a></li>
|
|
</ul>
|
|
<p>If <em>flags</em> includes <a class="reference internal" href="#NGHTTP2_FLAG_END_STREAM" title="NGHTTP2_FLAG_END_STREAM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_FLAG_END_STREAM</span></tt></a>, this frame has
|
|
END_STREAM flag set. The library does not support header
|
|
continuation and the HEADERS frame always has
|
|
<a class="reference internal" href="#NGHTTP2_FLAG_END_HEADERS" title="NGHTTP2_FLAG_END_HEADERS"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_FLAG_END_HEADERS</span></tt></a> flag set regardless of the <em>flags</em>
|
|
value.</p>
|
|
<p>If the <em>stream_id</em> is -1, this frame is assumed as request (i.e.,
|
|
request HEADERS frame which opens new stream). In this case, the
|
|
actual stream ID is assigned just before the frame is sent. For
|
|
response, specify stream ID in <em>stream_id</em>.</p>
|
|
<p>The <em>pri</em> is priority of this request.</p>
|
|
<p>The <em>nv</em> contains the name/value pairs. For i >= 0, <tt class="docutils literal"><span class="pre">nv[2*i]</span></tt>
|
|
contains a pointer to the name string and <tt class="docutils literal"><span class="pre">nv[2*i+1]</span></tt> contains a
|
|
pointer to the value string. The one beyond last value must be
|
|
<tt class="docutils literal"><span class="pre">NULL</span></tt>. That is, if the <em>nv</em> contains N name/value pairs,
|
|
<tt class="docutils literal"><span class="pre">nv[2*N]</span></tt> must be <tt class="docutils literal"><span class="pre">NULL</span></tt>.</p>
|
|
<p>This function creates copies of all name/value pairs in <em>nv</em>. It
|
|
also lower-cases all names in <em>nv</em>.</p>
|
|
<p>The <em>stream_user_data</em> is a pointer to an arbitrary data which is
|
|
associated to the stream this frame will open. Therefore it is only
|
|
used if this frame opens streams, in other words, it changes stream
|
|
state from idle or reserved to open.</p>
|
|
<p>This function is low-level in a sense that the application code can
|
|
specify flags directly. For usual HTTP request,
|
|
<a class="reference internal" href="#nghttp2_submit_request" title="nghttp2_submit_request"><tt class="xref c c-func docutils literal"><span class="pre">nghttp2_submit_request()</span></tt></a> is useful.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_INVALID_ARGUMENT" title="NGHTTP2_ERR_INVALID_ARGUMENT"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_INVALID_ARGUMENT</span></tt></a></dt>
|
|
<dd>The <em>pri</em> is invalid; or the <em>nv</em> includes empty name or
|
|
<tt class="docutils literal"><span class="pre">NULL</span></tt> value.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_submit_data">
|
|
int <tt class="descname">nghttp2_submit_data</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, uint8_t<em> flags</em>, int32_t<em> stream_id</em>, const <a class="reference internal" href="#nghttp2_data_provider" title="nghttp2_data_provider">nghttp2_data_provider</a><em> *data_prd</em><big>)</big><a class="headerlink" href="#nghttp2_submit_data" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Submits one or more DATA frames to the stream <em>stream_id</em>. The
|
|
data to be sent are provided by <em>data_prd</em>. If <em>flags</em> contains
|
|
<a class="reference internal" href="#NGHTTP2_FLAG_END_STREAM" title="NGHTTP2_FLAG_END_STREAM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_FLAG_END_STREAM</span></tt></a>, the last DATA frame has END_STREAM
|
|
flag set.</p>
|
|
<p>This function does not take ownership of the <em>data_prd</em>. The
|
|
function copies the members of the <em>data_prd</em>.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_STREAM_CLOSED" title="NGHTTP2_ERR_STREAM_CLOSED"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_STREAM_CLOSED</span></tt></a></dt>
|
|
<dd>The stream is already closed or does not exist.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_submit_priority">
|
|
int <tt class="descname">nghttp2_submit_priority</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, int32_t<em> stream_id</em>, int32_t<em> pri</em><big>)</big><a class="headerlink" href="#nghttp2_submit_priority" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Submits PRIORITY frame to change the priority of stream <em>stream_id</em>
|
|
to the priority value <em>pri</em>.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_INVALID_ARGUMENT" title="NGHTTP2_ERR_INVALID_ARGUMENT"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_INVALID_ARGUMENT</span></tt></a></dt>
|
|
<dd>The <em>pri</em> is negative.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_STREAM_CLOSED" title="NGHTTP2_ERR_STREAM_CLOSED"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_STREAM_CLOSED</span></tt></a></dt>
|
|
<dd>The stream is already closed or does not exist.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_submit_rst_stream">
|
|
int <tt class="descname">nghttp2_submit_rst_stream</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, int32_t<em> stream_id</em>, <a class="reference internal" href="#nghttp2_error_code" title="nghttp2_error_code">nghttp2_error_code</a><em> error_code</em><big>)</big><a class="headerlink" href="#nghttp2_submit_rst_stream" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Submits RST_STREAM frame to cancel/reject the stream <em>stream_id</em>
|
|
with the error code <em>error_code</em>.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_submit_settings">
|
|
int <tt class="descname">nghttp2_submit_settings</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, const <a class="reference internal" href="#nghttp2_settings_entry" title="nghttp2_settings_entry">nghttp2_settings_entry</a><em> *iv</em>, size_t<em> niv</em><big>)</big><a class="headerlink" href="#nghttp2_submit_settings" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Stores local settings and submits SETTINGS frame. The <em>iv</em> is the
|
|
pointer to the array of <a class="reference internal" href="#nghttp2_settings_entry" title="nghttp2_settings_entry"><tt class="xref c c-type docutils literal"><span class="pre">nghttp2_settings_entry</span></tt></a>. The <em>niv</em>
|
|
indicates the number of <a class="reference internal" href="#nghttp2_settings_entry" title="nghttp2_settings_entry"><tt class="xref c c-type docutils literal"><span class="pre">nghttp2_settings_entry</span></tt></a>.</p>
|
|
<p>This function does not take ownership of the <em>iv</em>. This function
|
|
copies all the elements in the <em>iv</em>.</p>
|
|
<p>While updating individual stream’s local window size, if the window
|
|
size becomes strictly larger than NGHTTP2_MAX_WINDOW_SIZE,
|
|
RST_STREAM is issued against such a stream.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_INVALID_ARGUMENT" title="NGHTTP2_ERR_INVALID_ARGUMENT"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_INVALID_ARGUMENT</span></tt></a></dt>
|
|
<dd>The <em>iv</em> contains invalid value (e.g., attempting to re-enable
|
|
flow control).</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_submit_push_promise">
|
|
int <tt class="descname">nghttp2_submit_push_promise</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, uint8_t<em> flags</em>, int32_t<em> stream_id</em>, const char<em> **nv</em><big>)</big><a class="headerlink" href="#nghttp2_submit_push_promise" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Submits PUSH_PROMISE frame. The <em>flags</em> is currently ignored and
|
|
the resulting PUSH_PROMISE frame always has
|
|
<a class="reference internal" href="#NGHTTP2_FLAG_END_PUSH_PROMISE" title="NGHTTP2_FLAG_END_PUSH_PROMISE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_FLAG_END_PUSH_PROMISE</span></tt></a> flag set due to the lack of
|
|
header continuation support in the library.</p>
|
|
<p>The <em>stream_id</em> must be client initiated stream ID.</p>
|
|
<p>The <em>nv</em> contains the name/value pairs. For i >= 0, <tt class="docutils literal"><span class="pre">nv[2*i]</span></tt>
|
|
contains a pointer to the name string and <tt class="docutils literal"><span class="pre">nv[2*i+1]</span></tt> contains a
|
|
pointer to the value string. The one beyond last value must be
|
|
<tt class="docutils literal"><span class="pre">NULL</span></tt>. That is, if the <em>nv</em> contains N name/value pairs,
|
|
<tt class="docutils literal"><span class="pre">nv[2*N]</span></tt> must be <tt class="docutils literal"><span class="pre">NULL</span></tt>.</p>
|
|
<p>This function creates copies of all name/value pairs in <em>nv</em>. It
|
|
also lower-cases all names in <em>nv</em>.</p>
|
|
<p>Since the library reorders the frames and tries to send the highest
|
|
prioritized one first and the HTTP/2.0 specification requires the
|
|
stream ID must be strictly increasing, the promised stream ID
|
|
cannot be known until it is about to sent. To know the promised
|
|
stream ID, the application can use
|
|
<a class="reference internal" href="#nghttp2_session_callbacks.before_frame_send_callback" title="nghttp2_session_callbacks.before_frame_send_callback"><tt class="xref c c-member docutils literal"><span class="pre">nghttp2_session_callbacks.before_frame_send_callback</span></tt></a>. This
|
|
callback is called just before the frame is sent. For PUSH_PROMISE
|
|
frame, the argument frame has the promised stream ID assigned.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_INVALID_ARGUMENT" title="NGHTTP2_ERR_INVALID_ARGUMENT"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_INVALID_ARGUMENT</span></tt></a></dt>
|
|
<dd>The <em>nv</em> includes empty name or <tt class="docutils literal"><span class="pre">NULL</span></tt> value.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_STREAM_CLOSED" title="NGHTTP2_ERR_STREAM_CLOSED"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_STREAM_CLOSED</span></tt></a></dt>
|
|
<dd>The stream is already closed or does not exist.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_submit_ping">
|
|
int <tt class="descname">nghttp2_submit_ping</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, uint8_t<em> *opaque_data</em><big>)</big><a class="headerlink" href="#nghttp2_submit_ping" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Submits PING frame. You don’t have to send PING back when you
|
|
received PING frame. The library automatically submits PING frame
|
|
in this case.</p>
|
|
<p>If the <em>opaque_data</em> is non <tt class="docutils literal"><span class="pre">NULL</span></tt>, then it should point to the 8
|
|
bytes array of memory to specify opaque data to send with PING
|
|
frame. If the <em>opaque_data</em> is <tt class="docutils literal"><span class="pre">NULL</span></tt>, zero-cleared 8 bytes will
|
|
be sent as opaque data.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_submit_goaway">
|
|
int <tt class="descname">nghttp2_submit_goaway</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, <a class="reference internal" href="#nghttp2_error_code" title="nghttp2_error_code">nghttp2_error_code</a><em> error_code</em>, uint8_t<em> *opaque_data</em>, size_t<em> opaque_data_len</em><big>)</big><a class="headerlink" href="#nghttp2_submit_goaway" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Submits GOAWAY frame with the error code <em>error_code</em>.</p>
|
|
<p>If the <em>opaque_data</em> is not <tt class="docutils literal"><span class="pre">NULL</span></tt> and <em>opaque_data_len</em> is not
|
|
zero, those data will be sent as additional debug data. The
|
|
library makes a copy of the memory region pointed by <em>opaque_data</em>
|
|
with the length <em>opaque_data_len</em>, so the caller does not need to
|
|
keep this memory after the return of this function. If the
|
|
<em>opaque_data_len</em> is 0, the <em>opaque_data</em> could be <tt class="docutils literal"><span class="pre">NULL</span></tt>.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_submit_window_update">
|
|
int <tt class="descname">nghttp2_submit_window_update</tt><big>(</big><a class="reference internal" href="#nghttp2_session" title="nghttp2_session">nghttp2_session</a><em> *session</em>, uint8_t<em> flags</em>, int32_t<em> stream_id</em>, int32_t<em> window_size_increment</em><big>)</big><a class="headerlink" href="#nghttp2_submit_window_update" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Submits WINDOW_UPDATE frame.</p>
|
|
<p>The <em>flags</em> is currently ignored.</p>
|
|
<p>If the <em>window_size_increment</em> is positive, the WINDOW_UPDATE with
|
|
that value as window_size_increment is queued. If the
|
|
<em>window_size_increment</em> is larger than the received bytes from the
|
|
remote endpoint, the local window size is increased by that
|
|
difference.</p>
|
|
<p>If the <em>window_size_increment</em> is negative, the local window size
|
|
is decreased by -<em>window_size_increment</em>. If
|
|
<a class="reference internal" href="#NGHTTP2_OPT_NO_AUTO_STREAM_WINDOW_UPDATE" title="NGHTTP2_OPT_NO_AUTO_STREAM_WINDOW_UPDATE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_OPT_NO_AUTO_STREAM_WINDOW_UPDATE</span></tt></a> (or
|
|
<a class="reference internal" href="#NGHTTP2_OPT_NO_AUTO_CONNECTION_WINDOW_UPDATE" title="NGHTTP2_OPT_NO_AUTO_CONNECTION_WINDOW_UPDATE"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_OPT_NO_AUTO_CONNECTION_WINDOW_UPDATE</span></tt></a> if <em>stream_id</em>
|
|
is 0) is not set and the library decided that the WINDOW_UPDATE
|
|
should be submitted, then WINDOW_UPDATE is queued with the current
|
|
received bytes count.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_INVALID_ARGUMENT" title="NGHTTP2_ERR_INVALID_ARGUMENT"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_INVALID_ARGUMENT</span></tt></a></dt>
|
|
<dd>The <em>delta_window_size</em> is 0.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_FLOW_CONTROL" title="NGHTTP2_ERR_FLOW_CONTROL"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_FLOW_CONTROL</span></tt></a></dt>
|
|
<dd>The local window size overflow or gets negative.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_STREAM_CLOSED" title="NGHTTP2_ERR_STREAM_CLOSED"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_STREAM_CLOSED</span></tt></a></dt>
|
|
<dd>The stream is already closed or does not exist.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_nv_compare_name">
|
|
int <tt class="descname">nghttp2_nv_compare_name</tt><big>(</big>const <a class="reference internal" href="#nghttp2_nv" title="nghttp2_nv">nghttp2_nv</a><em> *lhs</em>, const <a class="reference internal" href="#nghttp2_nv" title="nghttp2_nv">nghttp2_nv</a><em> *rhs</em><big>)</big><a class="headerlink" href="#nghttp2_nv_compare_name" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Compares lhs->name with lhs->namelen bytes and rhs->name with
|
|
rhs->namelen bytes. Returns negative integer if lhs->name is found
|
|
to be less than rhs->name; or returns positive integer if lhs->name
|
|
is found to be greater than rhs->name; or returns 0 otherwise.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_select_next_protocol">
|
|
int <tt class="descname">nghttp2_select_next_protocol</tt><big>(</big>unsigned char<em> **out</em>, unsigned char<em> *outlen</em>, const unsigned char<em> *in</em>, unsigned int<em> inlen</em><big>)</big><a class="headerlink" href="#nghttp2_select_next_protocol" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>A helper function for dealing with NPN in client side. The <em>in</em>
|
|
contains server’s protocol in preferable order. The format of <em>in</em>
|
|
is length-prefixed and not null-terminated. For example,
|
|
<tt class="docutils literal"><span class="pre">HTTP-draft-04/2.0</span></tt> and <tt class="docutils literal"><span class="pre">http/1.1</span></tt> stored in <em>in</em> like this:</p>
|
|
<div class="highlight-c"><div class="highlight"><pre><span class="n">in</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">=</span> <span class="mi">17</span>
|
|
<span class="n">in</span><span class="p">[</span><span class="mf">1..17</span><span class="p">]</span> <span class="o">=</span> <span class="s">"HTTP-draft-04/2.0"</span>
|
|
<span class="n">in</span><span class="p">[</span><span class="mi">18</span><span class="p">]</span> <span class="o">=</span> <span class="mi">8</span>
|
|
<span class="n">in</span><span class="p">[</span><span class="mf">19..26</span><span class="p">]</span> <span class="o">=</span> <span class="s">"http/1.1"</span>
|
|
<span class="n">inlen</span> <span class="o">=</span> <span class="mi">27</span>
|
|
</pre></div>
|
|
</div>
|
|
<p>The selection algorithm is as follows:</p>
|
|
<ol class="arabic simple">
|
|
<li>If server’s list contains <tt class="docutils literal"><span class="pre">HTTP-draft-04/2.0</span></tt>, it is selected
|
|
and returns 1. The following step is not taken.</li>
|
|
<li>If server’s list contains <tt class="docutils literal"><span class="pre">http/1.1</span></tt>, this function selects
|
|
<tt class="docutils literal"><span class="pre">http/1.1</span></tt> and returns 0. The following step is not taken.</li>
|
|
<li>This function selects nothing and returns -1. (So called
|
|
non-overlap case). In this case, <em>out</em> and <em>outlen</em> are left
|
|
untouched.</li>
|
|
</ol>
|
|
<p>Selecting <tt class="docutils literal"><span class="pre">HTTP-draft-04/2.0</span></tt> means that <tt class="docutils literal"><span class="pre">HTTP-draft-04/2.0</span></tt> is
|
|
written into <em>*out</em> and its length (which is 17) is
|
|
assigned to <em>*outlen</em>.</p>
|
|
<p>See <a class="reference external" href="http://technotes.googlecode.com/git/nextprotoneg.html">http://technotes.googlecode.com/git/nextprotoneg.html</a> for more
|
|
details about NPN.</p>
|
|
<p>To use this method you should do something like:</p>
|
|
<div class="highlight-c"><div class="highlight"><pre><span class="k">static</span> <span class="kt">int</span> <span class="nf">select_next_proto_cb</span><span class="p">(</span><span class="n">SSL</span><span class="o">*</span> <span class="n">ssl</span><span class="p">,</span>
|
|
<span class="kt">unsigned</span> <span class="kt">char</span> <span class="o">**</span><span class="n">out</span><span class="p">,</span>
|
|
<span class="kt">unsigned</span> <span class="kt">char</span> <span class="o">*</span><span class="n">outlen</span><span class="p">,</span>
|
|
<span class="k">const</span> <span class="kt">unsigned</span> <span class="kt">char</span> <span class="o">*</span><span class="n">in</span><span class="p">,</span>
|
|
<span class="kt">unsigned</span> <span class="kt">int</span> <span class="n">inlen</span><span class="p">,</span>
|
|
<span class="kt">void</span> <span class="o">*</span><span class="n">arg</span><span class="p">)</span>
|
|
<span class="p">{</span>
|
|
<span class="kt">int</span> <span class="n">rv</span><span class="p">;</span>
|
|
<span class="n">rv</span> <span class="o">=</span> <span class="n">nghttp2_select_next_protocol</span><span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">outlen</span><span class="p">,</span> <span class="n">in</span><span class="p">,</span> <span class="n">inlen</span><span class="p">);</span>
|
|
<span class="k">if</span><span class="p">(</span><span class="n">rv</span> <span class="o">==</span> <span class="mi">1</span><span class="p">)</span> <span class="p">{</span>
|
|
<span class="p">((</span><span class="n">MyType</span><span class="o">*</span><span class="p">)</span><span class="n">arg</span><span class="p">)</span><span class="o">-></span><span class="n">http2_selected</span> <span class="o">=</span> <span class="mi">1</span><span class="p">;</span>
|
|
<span class="p">}</span>
|
|
<span class="k">return</span> <span class="n">SSL_TLSEXT_ERR_OK</span><span class="p">;</span>
|
|
<span class="p">}</span>
|
|
<span class="p">...</span>
|
|
<span class="n">SSL_CTX_set_next_proto_select_cb</span><span class="p">(</span><span class="n">ssl_ctx</span><span class="p">,</span> <span class="n">select_next_proto_cb</span><span class="p">,</span> <span class="n">my_obj</span><span class="p">);</span>
|
|
</pre></div>
|
|
</div>
|
|
<p>Note that the HTTP/2.0 spec does use ALPN instead of NPN. This
|
|
function is provided for transitional period before ALPN is got
|
|
implemented in major SSL/TLS libraries.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_gzip_inflate_new">
|
|
int <tt class="descname">nghttp2_gzip_inflate_new</tt><big>(</big><a class="reference internal" href="#nghttp2_gzip" title="nghttp2_gzip">nghttp2_gzip</a><em> **inflater_ptr</em><big>)</big><a class="headerlink" href="#nghttp2_gzip_inflate_new" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>A helper function to set up a per request gzip stream to inflate data.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_GZIP" title="NGHTTP2_ERR_GZIP"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_GZIP</span></tt></a></dt>
|
|
<dd>The initialization of gzip stream failed.</dd>
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_NOMEM" title="NGHTTP2_ERR_NOMEM"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_NOMEM</span></tt></a></dt>
|
|
<dd>Out of memory.</dd>
|
|
</dl>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_gzip_inflate_del">
|
|
void <tt class="descname">nghttp2_gzip_inflate_del</tt><big>(</big><a class="reference internal" href="#nghttp2_gzip" title="nghttp2_gzip">nghttp2_gzip</a><em> *inflater</em><big>)</big><a class="headerlink" href="#nghttp2_gzip_inflate_del" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Frees the inflate stream. The <em>inflater</em> may be <tt class="docutils literal"><span class="pre">NULL</span></tt>.</p>
|
|
</dd></dl>
|
|
|
|
<dl class="function">
|
|
<dt id="nghttp2_gzip_inflate">
|
|
int <tt class="descname">nghttp2_gzip_inflate</tt><big>(</big><a class="reference internal" href="#nghttp2_gzip" title="nghttp2_gzip">nghttp2_gzip</a><em> *inflater</em>, uint8_t<em> *out</em>, size_t<em> *outlen_ptr</em>, const uint8_t<em> *in</em>, size_t<em> *inlen_ptr</em><big>)</big><a class="headerlink" href="#nghttp2_gzip_inflate" title="Permalink to this definition">¶</a></dt>
|
|
<dd><p>Inflates data in <em>in</em> with the length <em>*inlen_ptr</em> and stores the
|
|
inflated data to <em>out</em> which has allocated size at least
|
|
<em>*outlen_ptr</em>. On return, <em>*outlen_ptr</em> is updated to represent
|
|
the number of data written in <em>out</em>. Similarly, <em>*inlen_ptr</em> is
|
|
updated to represent the number of input bytes processed.</p>
|
|
<p>This function returns 0 if it succeeds, or one of the following
|
|
negative error codes:</p>
|
|
<dl class="docutils">
|
|
<dt><a class="reference internal" href="#NGHTTP2_ERR_GZIP" title="NGHTTP2_ERR_GZIP"><tt class="xref c c-macro docutils literal"><span class="pre">NGHTTP2_ERR_GZIP</span></tt></a></dt>
|
|
<dd>The inflation of gzip stream failed.</dd>
|
|
</dl>
|
|
<p>The example follows:</p>
|
|
<div class="highlight-c"><div class="highlight"><pre><span class="kt">void</span> <span class="nf">on_data_chunk_recv_callback</span><span class="p">(</span><span class="n">nghttp2_session</span> <span class="o">*</span><span class="n">session</span><span class="p">,</span>
|
|
<span class="kt">uint8_t</span> <span class="n">flags</span><span class="p">,</span>
|
|
<span class="kt">int32_t</span> <span class="n">stream_id</span><span class="p">,</span>
|
|
<span class="k">const</span> <span class="kt">uint8_t</span> <span class="o">*</span><span class="n">data</span><span class="p">,</span> <span class="kt">size_t</span> <span class="n">len</span><span class="p">,</span>
|
|
<span class="kt">void</span> <span class="o">*</span><span class="n">user_data</span><span class="p">)</span>
|
|
<span class="p">{</span>
|
|
<span class="p">...</span>
|
|
<span class="n">req</span> <span class="o">=</span> <span class="n">nghttp2_session_get_stream_user_data</span><span class="p">(</span><span class="n">session</span><span class="p">,</span> <span class="n">stream_id</span><span class="p">);</span>
|
|
<span class="n">nghttp2_gzip</span> <span class="o">*</span><span class="n">inflater</span> <span class="o">=</span> <span class="n">req</span><span class="o">-></span><span class="n">inflater</span><span class="p">;</span>
|
|
<span class="k">while</span><span class="p">(</span><span class="n">len</span> <span class="o">></span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
|
|
<span class="kt">uint8_t</span> <span class="n">out</span><span class="p">[</span><span class="n">MAX_OUTLEN</span><span class="p">];</span>
|
|
<span class="kt">size_t</span> <span class="n">outlen</span> <span class="o">=</span> <span class="n">MAX_OUTLEN</span><span class="p">;</span>
|
|
<span class="kt">size_t</span> <span class="n">tlen</span> <span class="o">=</span> <span class="n">len</span><span class="p">;</span>
|
|
<span class="kt">int</span> <span class="n">rv</span><span class="p">;</span>
|
|
<span class="n">rv</span> <span class="o">=</span> <span class="n">nghttp2_gzip_inflate</span><span class="p">(</span><span class="n">inflater</span><span class="p">,</span> <span class="n">out</span><span class="p">,</span> <span class="o">&</span><span class="n">outlen</span><span class="p">,</span> <span class="n">data</span><span class="p">,</span> <span class="o">&</span><span class="n">tlen</span><span class="p">);</span>
|
|
<span class="k">if</span><span class="p">(</span><span class="n">rv</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
|
|
<span class="n">nghttp2_submit_rst_stream</span><span class="p">(</span><span class="n">session</span><span class="p">,</span> <span class="n">stream_id</span><span class="p">,</span>
|
|
<span class="n">NGHTTP2_INTERNAL_ERROR</span><span class="p">);</span>
|
|
<span class="k">break</span><span class="p">;</span>
|
|
<span class="p">}</span>
|
|
<span class="p">...</span> <span class="n">Do</span> <span class="n">stuff</span> <span class="p">...</span>
|
|
<span class="n">data</span> <span class="o">+=</span> <span class="n">tlen</span><span class="p">;</span>
|
|
<span class="n">len</span> <span class="o">-=</span> <span class="n">tlen</span><span class="p">;</span>
|
|
<span class="p">}</span>
|
|
<span class="p">....</span>
|
|
<span class="p">}</span>
|
|
</pre></div>
|
|
</div>
|
|
</dd></dl>
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