nghttp2/src/asio_server_response_impl.cc

164 lines
4.5 KiB
C++

/*
* nghttp2 - HTTP/2 C Library
*
* Copyright (c) 2015 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 "asio_server_response_impl.h"
#include "asio_server_stream.h"
#include "asio_server_request_impl.h"
#include "asio_server_http2_handler.h"
#include "asio_common.h"
#include "http2.h"
namespace nghttp2 {
namespace asio_http2 {
namespace server {
response_impl::response_impl()
: strm_(nullptr), generator_cb_(deferred_generator()), status_code_(200),
state_(response_state::INITIAL), pushed_(false),
push_promise_sent_(false) {}
unsigned int response_impl::status_code() const { return status_code_; }
void response_impl::write_head(unsigned int status_code, header_map h) {
if (state_ != response_state::INITIAL) {
return;
}
status_code_ = status_code;
header_ = std::move(h);
state_ = response_state::HEADER_DONE;
if (pushed_ && !push_promise_sent_) {
return;
}
start_response();
}
void response_impl::end(std::string data) {
end(string_generator(std::move(data)));
}
void response_impl::end(generator_cb cb) {
if (state_ == response_state::BODY_STARTED) {
return;
}
generator_cb_ = std::move(cb);
if (state_ == response_state::INITIAL) {
write_head(status_code_);
} else {
// generator_cb is changed, start writing in case it is deferred.
auto handler = strm_->handler();
handler->resume(*strm_);
}
state_ = response_state::BODY_STARTED;
}
void response_impl::write_trailer(header_map h) {
auto handler = strm_->handler();
handler->submit_trailer(*strm_, std::move(h));
}
void response_impl::start_response() {
auto handler = strm_->handler();
auto &req = strm_->request().impl();
if (!::nghttp2::http2::expect_response_body(req.method(), status_code_)) {
state_ = response_state::BODY_STARTED;
}
if (handler->start_response(*strm_) != 0) {
handler->stream_error(strm_->get_stream_id(), NGHTTP2_INTERNAL_ERROR);
return;
}
}
void response_impl::on_close(close_cb cb) { close_cb_ = std::move(cb); }
void response_impl::call_on_close(uint32_t error_code) {
if (close_cb_) {
close_cb_(error_code);
}
}
void response_impl::cancel(uint32_t error_code) {
auto handler = strm_->handler();
handler->stream_error(strm_->get_stream_id(), error_code);
}
response *response_impl::push(boost::system::error_code &ec, std::string method,
std::string raw_path_query, header_map h) const {
auto handler = strm_->handler();
return handler->push_promise(ec, *strm_, std::move(method),
std::move(raw_path_query), std::move(h));
}
void response_impl::resume() {
auto handler = strm_->handler();
handler->resume(*strm_);
}
boost::asio::io_service &response_impl::io_service() {
return strm_->handler()->io_service();
}
void response_impl::pushed(bool f) { pushed_ = f; }
void response_impl::push_promise_sent() {
if (push_promise_sent_) {
return;
}
push_promise_sent_ = true;
if (state_ == response_state::INITIAL) {
return;
}
start_response();
}
const header_map &response_impl::header() const { return header_; }
void response_impl::stream(class stream *s) { strm_ = s; }
generator_cb::result_type
response_impl::call_read(uint8_t *data, std::size_t len, uint32_t *data_flags) {
if (generator_cb_) {
return generator_cb_(data, len, data_flags);
}
*data_flags |= NGHTTP2_DATA_FLAG_EOF;
return 0;
}
} // namespace server
} // namespace asio_http2
} // namespace nghttp2