It turns out that the cause of complication in backend request line
construction is a absolute-form in HTTP/1 request. In HTTP/2, we have
separated pseudo-header fields and no problem at all. In this commit,
we parse request URI in HTTP/1 frontend and extract values from it to
make backend logic simpler. This patch removes host header field
emission in HTTP/2 backend if :authority is emitted. It also rewrites
host header field with authority part in absolute-form URI as per RFC
7230.
This commit adds functionality to customize access logging format in
nghttpx. The format variables are inspired by nginx. The default
format is combined format.
h2-14 now allows extensions to define new error codes. To allow
application callback to access such error codes, we uses uint32_t as
error_code type for structs and function parameters. Previously we
treated unknown error code as INTERNAL_ERROR, but this change removes
this and unknown error code is passed to application callback as is.
Previously we only update consumed flow control window when number of
bytes read in nghttp2 and spdylay callback is 0. Now we notify
nghttp2 library the consumed bytes even if number of bytes read > 0.
This change also uses newly added spdylay_session_consume() API, so we
require spdylay >= 1.3.0.
It might be useful to clean the unused stream out to make up the room
for new streams. On the other hand, proxy should maintain the
connection between upstream client and downstream server and they have
the timeout for their own. Proxy just reacts to their decision.
Reworked no automatic WINDOW_UPDATE feature. We added new API
nghttp2_session_consume() which tells the library how many bytes are
consumed by the application. Instead of submitting WINDOW_UPDATE by
the application, the library is now responsible to submit
WINDOW_UPDATE based on consumed bytes. This is more reliable method,
since it enables us to properly send WINDOW_UPDATE for stream and
connection individually. The previous implementation of nghttpx had
broken connection window management.
Tatsuhiro Tsujikawa
Lucas Pardue