5 // Copyright (c) 2003-2017 Christopher M. Kohlhoff (chris at kohlhoff dot com)
7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
11 #include <boost/asio/io_service.hpp>
12 #include <boost/asio/ip/tcp.hpp>
13 #include <boost/asio/read.hpp>
14 #include <boost/asio/write.hpp>
15 #include <boost/shared_ptr.hpp>
21 using boost::asio::ip::tcp;
25 class tcp_server : coroutine
28 tcp_server(tcp::acceptor& acceptor, std::size_t buf_size) :
30 socket_(acceptor_.get_io_service()),
35 void operator()(boost::system::error_code ec, std::size_t n = 0)
37 reenter (this) for (;;)
39 yield acceptor_.async_accept(socket_, ref(this));
43 yield boost::asio::async_read(socket_,
44 boost::asio::buffer(buffer_), ref(this));
48 for (std::size_t i = 0; i < n; ++i) buffer_[i] = ~buffer_[i];
50 yield boost::asio::async_write(socket_,
51 boost::asio::buffer(buffer_), ref(this));
61 explicit ref(tcp_server* p)
66 void operator()(boost::system::error_code ec, std::size_t n = 0)
76 tcp::acceptor& acceptor_;
78 std::vector<unsigned char> buffer_;
79 tcp::endpoint sender_;
82 #include "unyield.hpp"
84 int main(int argc, char* argv[])
89 "Usage: tcp_server <port> <nconns> "
90 "<bufsize> {spin|block}\n");
94 unsigned short port = static_cast<unsigned short>(std::atoi(argv[1]));
95 int max_connections = std::atoi(argv[2]);
96 std::size_t buf_size = std::atoi(argv[3]);
97 bool spin = (std::strcmp(argv[4], "spin") == 0);
99 boost::asio::io_service io_service(1);
100 tcp::acceptor acceptor(io_service, tcp::endpoint(tcp::v4(), port));
101 std::vector<boost::shared_ptr<tcp_server> > servers;
103 for (int i = 0; i < max_connections; ++i)
105 boost::shared_ptr<tcp_server> s(new tcp_server(acceptor, buf_size));
106 servers.push_back(s);
107 (*s)(boost::system::error_code());
111 for (;;) io_service.poll();