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/*
* nghttp2 - HTTP/2 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.
*/
#include "nghttp2_stream.h"
#include <assert.h>
#include "nghttp2_session.h"
#include "nghttp2_helper.h"
#include "nghttp2_debug.h"
#include "nghttp2_frame.h"
void nghttp2_stream_init(nghttp2_stream *stream, int32_t stream_id,
uint8_t flags, nghttp2_stream_state initial_state,
int32_t remote_initial_window_size,
int32_t local_initial_window_size,
void *stream_user_data) {
stream->stream_id = stream_id;
stream->flags = flags;
stream->state = initial_state;
stream->shut_flags = NGHTTP2_SHUT_NONE;
stream->stream_user_data = stream_user_data;
stream->item = NULL;
stream->remote_window_size = remote_initial_window_size;
stream->local_window_size = local_initial_window_size;
stream->recv_window_size = 0;
stream->consumed_size = 0;
stream->recv_reduction = 0;
stream->window_update_queued = 0;
stream->closed_next = NULL;
stream->http_flags = NGHTTP2_HTTP_FLAG_NONE;
stream->content_length = -1;
stream->recv_content_length = 0;
stream->status_code = -1;
stream->queued = 0;
stream->cycle = 0;
stream->pending_penalty = 0;
stream->seq = 0;
stream->last_writelen = 0;
stream->extpri = stream->http_extpri = NGHTTP2_EXTPRI_DEFAULT_URGENCY;
}
void nghttp2_stream_free(nghttp2_stream *stream) { (void)stream; }
void nghttp2_stream_shutdown(nghttp2_stream *stream, nghttp2_shut_flag flag) {
stream->shut_flags = (uint8_t)(stream->shut_flags | flag);
}
void nghttp2_stream_attach_item(nghttp2_stream *stream,
nghttp2_outbound_item *item) {
assert((stream->flags & NGHTTP2_STREAM_FLAG_DEFERRED_ALL) == 0);
assert(stream->item == NULL);
DEBUGF("stream: stream=%d attach item=%p\n", stream->stream_id, item);
stream->item = item;
}
void nghttp2_stream_detach_item(nghttp2_stream *stream) {
DEBUGF("stream: stream=%d detach item=%p\n", stream->stream_id, stream->item);
stream->item = NULL;
stream->flags = (uint8_t)(stream->flags & ~NGHTTP2_STREAM_FLAG_DEFERRED_ALL);
}
void nghttp2_stream_defer_item(nghttp2_stream *stream, uint8_t flags) {
assert(stream->item);
DEBUGF("stream: stream=%d defer item=%p cause=%02x\n", stream->stream_id,
stream->item, flags);
stream->flags |= flags;
}
void nghttp2_stream_resume_deferred_item(nghttp2_stream *stream,
uint8_t flags) {
assert(stream->item);
DEBUGF("stream: stream=%d resume item=%p flags=%02x\n", stream->stream_id,
stream->item, flags);
stream->flags = (uint8_t)(stream->flags & ~flags);
}
int nghttp2_stream_check_deferred_item(nghttp2_stream *stream) {
return stream->item && (stream->flags & NGHTTP2_STREAM_FLAG_DEFERRED_ALL);
}
int nghttp2_stream_check_deferred_by_flow_control(nghttp2_stream *stream) {
return stream->item &&
(stream->flags & NGHTTP2_STREAM_FLAG_DEFERRED_FLOW_CONTROL);
}
static int update_initial_window_size(int32_t *window_size_ptr,
int32_t new_initial_window_size,
int32_t old_initial_window_size) {
int64_t new_window_size = (int64_t)(*window_size_ptr) +
new_initial_window_size - old_initial_window_size;
if (INT32_MIN > new_window_size ||
new_window_size > NGHTTP2_MAX_WINDOW_SIZE) {
return -1;
}
*window_size_ptr = (int32_t)new_window_size;
return 0;
}
int nghttp2_stream_update_remote_initial_window_size(
nghttp2_stream *stream, int32_t new_initial_window_size,
int32_t old_initial_window_size) {
return update_initial_window_size(&stream->remote_window_size,
new_initial_window_size,
old_initial_window_size);
}
int nghttp2_stream_update_local_initial_window_size(
nghttp2_stream *stream, int32_t new_initial_window_size,
int32_t old_initial_window_size) {
return update_initial_window_size(&stream->local_window_size,
new_initial_window_size,
old_initial_window_size);
}
void nghttp2_stream_promise_fulfilled(nghttp2_stream *stream) {
stream->state = NGHTTP2_STREAM_OPENED;
stream->flags = (uint8_t)(stream->flags & ~NGHTTP2_STREAM_FLAG_PUSH);
}
nghttp2_stream_proto_state nghttp2_stream_get_state(nghttp2_stream *stream) {
if (stream == &root) {
return NGHTTP2_STREAM_STATE_IDLE;
}
if (stream->flags & NGHTTP2_STREAM_FLAG_CLOSED) {
return NGHTTP2_STREAM_STATE_CLOSED;
}
if (stream->flags & NGHTTP2_STREAM_FLAG_PUSH) {
if (stream->shut_flags & NGHTTP2_SHUT_RD) {
return NGHTTP2_STREAM_STATE_RESERVED_LOCAL;
}
if (stream->shut_flags & NGHTTP2_SHUT_WR) {
return NGHTTP2_STREAM_STATE_RESERVED_REMOTE;
}
}
if (stream->shut_flags & NGHTTP2_SHUT_RD) {
return NGHTTP2_STREAM_STATE_HALF_CLOSED_REMOTE;
}
if (stream->shut_flags & NGHTTP2_SHUT_WR) {
return NGHTTP2_STREAM_STATE_HALF_CLOSED_LOCAL;
}
if (stream->state == NGHTTP2_STREAM_IDLE) {
return NGHTTP2_STREAM_STATE_IDLE;
}
return NGHTTP2_STREAM_STATE_OPEN;
}
nghttp2_stream *nghttp2_stream_get_parent(nghttp2_stream *stream) {
(void)stream;
return NULL;
}
nghttp2_stream *nghttp2_stream_get_next_sibling(nghttp2_stream *stream) {
(void)stream;
return NULL;
}
nghttp2_stream *nghttp2_stream_get_previous_sibling(nghttp2_stream *stream) {
(void)stream;
return NULL;
}
nghttp2_stream *nghttp2_stream_get_first_child(nghttp2_stream *stream) {
(void)stream;
return NULL;
}
int32_t nghttp2_stream_get_weight(nghttp2_stream *stream) {
(void)stream;
return NGHTTP2_DEFAULT_WEIGHT;
}
int32_t nghttp2_stream_get_sum_dependency_weight(nghttp2_stream *stream) {
(void)stream;
return 0;
}
int32_t nghttp2_stream_get_stream_id(nghttp2_stream *stream) {
return stream->stream_id;
}
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