81 lines
1.8 KiB
C++
81 lines
1.8 KiB
C++
//
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// blocking_tcp_echo_server.cpp
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2019 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 <cstdlib>
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#include <iostream>
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#include <boost/bind.hpp>
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#include <boost/smart_ptr.hpp>
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#include <boost/asio.hpp>
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#include <boost/thread/thread.hpp>
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using boost::asio::ip::tcp;
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const int max_length = 1024;
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typedef boost::shared_ptr<tcp::socket> socket_ptr;
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void session(socket_ptr sock)
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{
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try
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{
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for (;;)
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{
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char data[max_length];
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boost::system::error_code error;
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size_t length = sock->read_some(boost::asio::buffer(data), error);
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if (error == boost::asio::error::eof)
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break; // Connection closed cleanly by peer.
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else if (error)
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throw boost::system::system_error(error); // Some other error.
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boost::asio::write(*sock, boost::asio::buffer(data, length));
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}
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}
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catch (std::exception& e)
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{
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std::cerr << "Exception in thread: " << e.what() << "\n";
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}
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}
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void server(boost::asio::io_context& io_context, unsigned short port)
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{
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tcp::acceptor a(io_context, tcp::endpoint(tcp::v4(), port));
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for (;;)
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{
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socket_ptr sock(new tcp::socket(io_context));
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a.accept(*sock);
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boost::thread t(boost::bind(session, sock));
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}
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}
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int main(int argc, char* argv[])
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{
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try
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{
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if (argc != 2)
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{
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std::cerr << "Usage: blocking_tcp_echo_server <port>\n";
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return 1;
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}
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boost::asio::io_context io_context;
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using namespace std; // For atoi.
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server(io_context, atoi(argv[1]));
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}
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catch (std::exception& e)
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{
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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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