nghttp2/lib/nghttp2_stream.c

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/*
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* nghttp2 - HTTP/2.0 C Library
*
* Copyright (c) 2012 Tatsuhiro Tsujikawa
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
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#include "nghttp2_stream.h"
#include <assert.h>
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void nghttp2_stream_init(nghttp2_stream *stream, int32_t stream_id,
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uint8_t flags, int32_t pri,
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nghttp2_stream_state initial_state,
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uint8_t remote_flow_control,
uint8_t local_flow_control,
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int32_t initial_window_size,
void *stream_user_data)
{
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nghttp2_map_entry_init(&stream->map_entry, stream_id);
stream->stream_id = stream_id;
stream->flags = flags;
stream->pri = pri;
stream->state = initial_state;
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stream->shut_flags = NGHTTP2_SHUT_NONE;
stream->pushed_streams = NULL;
stream->pushed_streams_length = 0;
stream->pushed_streams_capacity = 0;
stream->stream_user_data = stream_user_data;
stream->deferred_data = NULL;
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stream->deferred_flags = NGHTTP2_DEFERRED_NONE;
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stream->remote_flow_control = remote_flow_control;
stream->local_flow_control = local_flow_control;
stream->window_size = initial_window_size;
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stream->recv_window_size = 0;
}
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void nghttp2_stream_free(nghttp2_stream *stream)
{
free(stream->pushed_streams);
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nghttp2_outbound_item_free(stream->deferred_data);
free(stream->deferred_data);
}
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void nghttp2_stream_shutdown(nghttp2_stream *stream, nghttp2_shut_flag flag)
{
stream->shut_flags |= flag;
}
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int nghttp2_stream_add_pushed_stream(nghttp2_stream *stream, int32_t stream_id)
{
if(stream->pushed_streams_capacity == stream->pushed_streams_length) {
int32_t *streams;
size_t capacity = stream->pushed_streams_capacity == 0 ?
5 : stream->pushed_streams_capacity*2;
streams = realloc(stream->pushed_streams, capacity*sizeof(uint32_t));
if(streams == NULL) {
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return NGHTTP2_ERR_NOMEM;
}
stream->pushed_streams = streams;
stream->pushed_streams_capacity = capacity;
}
stream->pushed_streams[stream->pushed_streams_length++] = stream_id;
return 0;
}
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void nghttp2_stream_defer_data(nghttp2_stream *stream,
nghttp2_outbound_item *data,
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uint8_t flags)
{
assert(stream->deferred_data == NULL);
stream->deferred_data = data;
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stream->deferred_flags = flags;
}
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void nghttp2_stream_detach_deferred_data(nghttp2_stream *stream)
{
stream->deferred_data = NULL;
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stream->deferred_flags = NGHTTP2_DEFERRED_NONE;
}
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void nghttp2_stream_update_initial_window_size(nghttp2_stream *stream,
int32_t new_initial_window_size,
int32_t old_initial_window_size)
{
stream->window_size =
new_initial_window_size-(old_initial_window_size-stream->window_size);
}