2 * nghttp2 - HTTP/2 C Library
4 * Copyright (c) 2014 Tatsuhiro Tsujikawa
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sublicense, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice shall be
15 * included in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 #include "h2load_spdy_session.h"
33 using namespace nghttp2;
37 SpdySession::SpdySession(Client *client, uint16_t spdy_version)
38 : client_(client), session_(nullptr), spdy_version_(spdy_version) {}
40 SpdySession::~SpdySession() { spdylay_session_del(session_); }
43 void before_ctrl_send_callback(spdylay_session *session,
44 spdylay_frame_type type, spdylay_frame *frame,
46 auto client = static_cast<Client *>(user_data);
47 if (type != SPDYLAY_SYN_STREAM) {
50 client->on_request(frame->syn_stream.stream_id);
52 static_cast<RequestStat *>(spdylay_session_get_stream_user_data(
53 session, frame->syn_stream.stream_id));
54 client->record_request_time(req_stat);
59 void on_ctrl_recv_callback(spdylay_session *session, spdylay_frame_type type,
60 spdylay_frame *frame, void *user_data) {
61 auto client = static_cast<Client *>(user_data);
62 if (type != SPDYLAY_SYN_REPLY) {
65 for (auto p = frame->syn_reply.nv; *p; p += 2) {
67 auto value = *(p + 1);
68 client->on_header(frame->syn_reply.stream_id,
69 reinterpret_cast<const uint8_t *>(name), strlen(name),
70 reinterpret_cast<const uint8_t *>(value), strlen(value));
72 client->worker->stats.bytes_head += frame->syn_reply.hd.length;
77 void on_data_chunk_recv_callback(spdylay_session *session, uint8_t flags,
78 int32_t stream_id, const uint8_t *data,
79 size_t len, void *user_data) {
80 auto client = static_cast<Client *>(user_data);
81 client->worker->stats.bytes_body += len;
83 auto spdy_session = static_cast<SpdySession *>(client->session.get());
85 spdy_session->handle_window_update(stream_id, len);
90 void on_stream_close_callback(spdylay_session *session, int32_t stream_id,
91 spdylay_status_code status_code,
93 auto client = static_cast<Client *>(user_data);
94 auto req_stat = static_cast<RequestStat *>(
95 spdylay_session_get_stream_user_data(session, stream_id));
96 client->on_stream_close(stream_id, status_code == SPDYLAY_OK, req_stat);
101 ssize_t send_callback(spdylay_session *session, const uint8_t *data,
102 size_t length, int flags, void *user_data) {
103 auto client = static_cast<Client *>(user_data);
104 auto &wb = client->wb;
106 if (wb.wleft() == 0) {
107 return SPDYLAY_ERR_DEFERRED;
110 return wb.write(data, length);
115 ssize_t file_read_callback(spdylay_session *session, int32_t stream_id,
116 uint8_t *buf, size_t length, int *eof,
117 spdylay_data_source *source, void *user_data) {
118 auto client = static_cast<Client *>(user_data);
119 auto config = client->worker->config;
120 auto req_stat = static_cast<RequestStat *>(
121 spdylay_session_get_stream_user_data(session, stream_id));
124 while ((nread = pread(config->data_fd, buf, length, req_stat->data_offset)) ==
130 return SPDYLAY_ERR_TEMPORAL_CALLBACK_FAILURE;
133 req_stat->data_offset += nread;
135 if (nread == 0 || req_stat->data_offset == config->data_length) {
143 void SpdySession::on_connect() {
144 spdylay_session_callbacks callbacks = {0};
145 callbacks.send_callback = send_callback;
146 callbacks.before_ctrl_send_callback = before_ctrl_send_callback;
147 callbacks.on_data_chunk_recv_callback = on_data_chunk_recv_callback;
148 callbacks.on_stream_close_callback = on_stream_close_callback;
149 callbacks.on_ctrl_recv_callback = on_ctrl_recv_callback;
151 spdylay_session_client_new(&session_, spdy_version_, &callbacks, client_);
154 spdylay_session_set_option(session_, SPDYLAY_OPT_NO_AUTO_WINDOW_UPDATE, &val,
157 spdylay_settings_entry iv;
158 iv.settings_id = SPDYLAY_SETTINGS_INITIAL_WINDOW_SIZE;
159 iv.flags = SPDYLAY_ID_FLAG_SETTINGS_NONE;
160 iv.value = (1 << client_->worker->config->window_bits);
161 spdylay_submit_settings(session_, SPDYLAY_FLAG_SETTINGS_NONE, &iv, 1);
163 auto config = client_->worker->config;
165 if (spdy_version_ >= SPDYLAY_PROTO_SPDY3_1 &&
166 config->connection_window_bits > 16) {
168 (1 << config->connection_window_bits) - SPDYLAY_INITIAL_WINDOW_SIZE;
169 spdylay_submit_window_update(session_, 0, delta);
172 client_->signal_write();
175 void SpdySession::submit_request(RequestStat *req_stat) {
176 auto config = client_->worker->config;
177 auto &nv = config->nv[client_->reqidx++];
179 if (client_->reqidx == config->nv.size()) {
183 spdylay_data_provider prd{{0}, file_read_callback};
185 spdylay_submit_request(session_, 0, nv.data(),
186 config->data_fd == -1 ? nullptr : &prd, req_stat);
189 int SpdySession::on_read(const uint8_t *data, size_t len) {
190 auto rv = spdylay_session_mem_recv(session_, data, len);
195 assert(static_cast<size_t>(rv) == len);
197 if (spdylay_session_want_read(session_) == 0 &&
198 spdylay_session_want_write(session_) == 0 && client_->wb.rleft() == 0) {
202 client_->signal_write();
207 int SpdySession::on_write() {
208 auto rv = spdylay_session_send(session_);
213 if (spdylay_session_want_read(session_) == 0 &&
214 spdylay_session_want_write(session_) == 0 && client_->wb.rleft() == 0) {
220 void SpdySession::terminate() {
221 spdylay_session_fail_session(session_, SPDYLAY_OK);
225 int32_t determine_window_update_transmission(spdylay_session *session,
227 size_t window_bits) {
230 if (stream_id == 0) {
231 recv_length = spdylay_session_get_recv_data_length(session);
234 spdylay_session_get_stream_recv_data_length(session, stream_id);
237 auto window_size = 1 << window_bits;
239 if (recv_length != -1 && recv_length >= window_size / 2) {
247 void SpdySession::handle_window_update(int32_t stream_id, size_t recvlen) {
248 auto config = client_->worker->config;
249 size_t connection_window_bits;
251 if (config->connection_window_bits > 16) {
252 connection_window_bits = config->connection_window_bits;
254 connection_window_bits = 16;
258 determine_window_update_transmission(session_, 0, connection_window_bits);
260 spdylay_submit_window_update(session_, 0, delta);
263 delta = determine_window_update_transmission(session_, stream_id,
264 config->window_bits);
266 spdylay_submit_window_update(session_, stream_id, delta);
270 } // namespace h2load