143 lines
4.4 KiB
C++
143 lines
4.4 KiB
C++
/*
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* nghttp2 - HTTP/2 C Library
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*
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* Copyright (c) 2014 Tatsuhiro Tsujikawa
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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// We wrote this code based on the original code which has the
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// following license:
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//
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// main.cpp
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// ~~~~~~~~
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//
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// Copyright (c) 2003-2013 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include <unistd.h>
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#include <iostream>
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#include <string>
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#include <deque>
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#include <nghttp2/asio_http2.h>
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using namespace nghttp2::asio_http2;
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using namespace nghttp2::asio_http2::server;
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int main(int argc, char *argv[]) {
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try {
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// Check command line arguments.
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if (argc < 4) {
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std::cerr << "Usage: asio-sv3 <port> <threads> <tasks> "
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<< " <private-key-file> <cert-file>\n";
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return 1;
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}
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uint16_t port = std::stoi(argv[1]);
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std::size_t num_threads = std::stoi(argv[2]);
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std::size_t num_concurrent_tasks = std::stoi(argv[3]);
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http2 server;
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server.num_threads(num_threads);
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if (argc >= 5) {
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server.tls(argv[4], argv[5]);
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}
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server.num_concurrent_tasks(num_concurrent_tasks);
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server.listen("*", port, [](const std::shared_ptr<request> &req,
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const std::shared_ptr<response> &res) {
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res->write_head(200);
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auto msgq = std::make_shared<std::deque<std::string>>();
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res->end([msgq](uint8_t * buf, std::size_t len)
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-> std::pair<ssize_t, bool> {
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if (msgq->empty()) {
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// if msgq is empty, tells the library that don't call
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// this callback until we call res->resume(). This is
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// done by returing std::make_pair(0, false).
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return std::make_pair(0, false);
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}
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auto msg = std::move(msgq->front());
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msgq->pop_front();
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if (msg.empty()) {
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// The empty message signals the end of response in
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// this simple protocol.
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return std::make_pair(0, true);
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}
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auto nwrite = std::min(len, msg.size());
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std::copy(std::begin(msg), std::begin(msg) + nwrite, buf);
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if (msg.size() > nwrite) {
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msgq->push_front(msg.substr(nwrite));
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}
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return std::make_pair(nwrite, false);
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});
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req->run_task([res, msgq](channel &channel) {
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// executed in different thread from request callback
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// was called.
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// Using res and msgq is not safe inside this callback.
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// But using them in callback passed to channel::post is
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// safe.
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// We just emit simple message "message N\n" in every 1
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// second and 3 times in total.
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for (std::size_t i = 0; i < 3; ++i) {
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msgq->push_back("message " + std::to_string(i + 1) + "\n");
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channel.post([res]() {
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// executed in same thread where
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// request callback was called.
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// Tells library we have new message.
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res->resume();
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});
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sleep(1);
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}
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// Send empty message to signal the end of response
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// body.
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msgq->push_back("");
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channel.post([res]() {
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// executed in same thread where request
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// callback was called.
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res->resume();
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});
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});
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});
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} catch (std::exception &e) {
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std::cerr << "exception: " << e.what() << "\n";
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}
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return 0;
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}
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