nghttp2/src/h2load_http1_session.cc

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/*
* nghttp2 - HTTP/2 C Library
*
* Copyright (c) 2015 British Broadcasting Corporation
*
* 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 "h2load_http1_session.h"
#include <cassert>
#include <cerrno>
#include "h2load.h"
#include "util.h"
#include "template.h"
#include <iostream>
#include <fstream>
#include "http-parser/http_parser.h"
using namespace nghttp2;
namespace h2load {
Http1Session::Http1Session(Client *client)
: stream_req_counter_(1),
stream_resp_counter_(1),
client_(client),
htp_(),
complete_(false) {
http_parser_init(&htp_, HTTP_RESPONSE);
htp_.data = this;
}
Http1Session::~Http1Session() {}
namespace {
// HTTP response message begin
int htp_msg_begincb(http_parser *htp) {
auto session = static_cast<Http1Session *>(htp->data);
if (session->stream_resp_counter_ > session->stream_req_counter_) {
return -1;
}
return 0;
}
} // namespace
namespace {
// HTTP response status code
int htp_statuscb(http_parser *htp, const char *at, size_t length) {
auto session = static_cast<Http1Session *>(htp->data);
auto client = session->get_client();
client->on_status_code(session->stream_resp_counter_, htp->status_code);
return 0;
}
} // namespace
namespace {
// HTTP response message complete
int htp_msg_completecb(http_parser *htp) {
auto session = static_cast<Http1Session *>(htp->data);
auto client = session->get_client();
client->final = http_should_keep_alive(htp) == 0;
auto req_stat = client->get_req_stat(session->stream_resp_counter_);
assert(req_stat);
auto config = client->worker->config;
if (req_stat->data_offset >= config->data_length) {
client->on_stream_close(session->stream_resp_counter_, true, client->final);
}
session->stream_resp_counter_ += 2;
if (client->final) {
session->stream_req_counter_ = session->stream_resp_counter_;
http_parser_pause(htp, 1);
// Connection is going down. If we have still request to do,
// create new connection and keep on doing the job.
if (client->req_left) {
client->try_new_connection();
}
return 0;
}
return 0;
}
} // namespace
namespace {
int htp_hdr_keycb(http_parser *htp, const char *data, size_t len) {
auto session = static_cast<Http1Session *>(htp->data);
auto client = session->get_client();
client->worker->stats.bytes_head += len;
client->worker->stats.bytes_head_decomp += len;
return 0;
}
} // namespace
namespace {
int htp_hdr_valcb(http_parser *htp, const char *data, size_t len) {
auto session = static_cast<Http1Session *>(htp->data);
auto client = session->get_client();
client->worker->stats.bytes_head += len;
client->worker->stats.bytes_head_decomp += len;
return 0;
}
} // namespace
namespace {
int htp_body_cb(http_parser *htp, const char *data, size_t len) {
auto session = static_cast<Http1Session *>(htp->data);
auto client = session->get_client();
client->record_ttfb();
client->worker->stats.bytes_body += len;
return 0;
}
} // namespace
namespace {
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constexpr http_parser_settings htp_hooks = {
htp_msg_begincb, // http_cb on_message_begin;
nullptr, // http_data_cb on_url;
htp_statuscb, // http_data_cb on_status;
htp_hdr_keycb, // http_data_cb on_header_field;
htp_hdr_valcb, // http_data_cb on_header_value;
nullptr, // http_cb on_headers_complete;
htp_body_cb, // http_data_cb on_body;
htp_msg_completecb // http_cb on_message_complete;
};
} // namespace
void Http1Session::on_connect() { client_->signal_write(); }
int Http1Session::submit_request() {
auto config = client_->worker->config;
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const auto &req = config->h1reqs[client_->reqidx];
client_->reqidx++;
if (client_->reqidx == config->h1reqs.size()) {
client_->reqidx = 0;
}
client_->on_request(stream_req_counter_);
auto req_stat = client_->get_req_stat(stream_req_counter_);
client_->record_request_time(req_stat);
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client_->wb.append(req);
if (config->data_fd == -1 || config->data_length == 0) {
// increment for next request
stream_req_counter_ += 2;
return 0;
}
return on_write();
}
int Http1Session::on_read(const uint8_t *data, size_t len) {
auto nread = http_parser_execute(&htp_, &htp_hooks,
reinterpret_cast<const char *>(data), len);
if (client_->worker->config->verbose) {
std::cout.write(reinterpret_cast<const char *>(data), nread);
}
auto htperr = HTTP_PARSER_ERRNO(&htp_);
if (htperr == HPE_PAUSED) {
// pause is done only when connection: close is requested
return -1;
}
if (htperr != HPE_OK) {
std::cerr << "[ERROR] HTTP parse error: "
<< "(" << http_errno_name(htperr) << ") "
<< http_errno_description(htperr) << std::endl;
return -1;
}
return 0;
}
int Http1Session::on_write() {
if (complete_) {
return -1;
}
auto config = client_->worker->config;
auto req_stat = client_->get_req_stat(stream_req_counter_);
if (!req_stat) {
return 0;
}
if (req_stat->data_offset < config->data_length) {
auto req_stat = client_->get_req_stat(stream_req_counter_);
auto &wb = client_->wb;
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// TODO unfortunately, wb has no interface to use with read(2)
// family functions.
std::array<uint8_t, 16_k> buf;
ssize_t nread;
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while ((nread = pread(config->data_fd, buf.data(), buf.size(),
req_stat->data_offset)) == -1 &&
errno == EINTR)
;
if (nread == -1) {
return -1;
}
req_stat->data_offset += nread;
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wb.append(buf.data(), nread);
if (client_->worker->config->verbose) {
std::cout << "[send " << nread << " byte(s)]" << std::endl;
}
if (req_stat->data_offset == config->data_length) {
// increment for next request
stream_req_counter_ += 2;
if (stream_resp_counter_ == stream_req_counter_) {
// Response has already been received
client_->on_stream_close(stream_resp_counter_ - 2, true,
client_->final);
}
}
}
return 0;
}
void Http1Session::terminate() { complete_ = true; }
Client *Http1Session::get_client() { return client_; }
size_t Http1Session::max_concurrent_streams() {
auto config = client_->worker->config;
return config->data_fd == -1 ? config->max_concurrent_streams : 1;
}
} // namespace h2load