2 // blocking_tcp_echo_client.cpp
3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5 // Copyright (c) 2003-2012 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)
14 #include <boost/asio.hpp>
16 using boost::asio::ip::tcp;
18 enum { max_length = 1024 };
20 int main(int argc, char* argv[])
26 std::cerr << "Usage: blocking_tcp_echo_client <host> <port>\n";
30 boost::asio::io_service io_service;
32 tcp::resolver resolver(io_service);
33 tcp::resolver::query query(tcp::v4(), argv[1], argv[2]);
34 tcp::resolver::iterator iterator = resolver.resolve(query);
36 tcp::socket s(io_service);
37 boost::asio::connect(s, iterator);
39 using namespace std; // For strlen.
40 std::cout << "Enter message: ";
41 char request[max_length];
42 std::cin.getline(request, max_length);
43 size_t request_length = strlen(request);
44 boost::asio::write(s, boost::asio::buffer(request, request_length));
46 char reply[max_length];
47 size_t reply_length = boost::asio::read(s,
48 boost::asio::buffer(reply, request_length));
49 std::cout << "Reply is: ";
50 std::cout.write(reply, reply_length);
53 catch (std::exception& e)
55 std::cerr << "Exception: " << e.what() << "\n";