1 //
2 // blocking_tcp_echo_client.cpp
3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
4 //
5 // Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
6 //
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)
9 //
10
11 #include <cstdlib>
12 #include <cstring>
13 #include <iostream>
14 #include "asio.hpp"
15
16 using asio::ip::tcp;
17
18 enum { max_length = 1024 };
19
main(int argc,char * argv[])20 int main(int argc, char* argv[])
21 {
22 try
23 {
24 if (argc != 3)
25 {
26 std::cerr << "Usage: blocking_tcp_echo_client <host> <port>\n";
27 return 1;
28 }
29
30 asio::io_context io_context;
31
32 tcp::socket s(io_context);
33 tcp::resolver resolver(io_context);
34 asio::connect(s, resolver.resolve(argv[1], argv[2]));
35
36 std::cout << "Enter message: ";
37 char request[max_length];
38 std::cin.getline(request, max_length);
39 size_t request_length = std::strlen(request);
40 asio::write(s, asio::buffer(request, request_length));
41
42 char reply[max_length];
43 size_t reply_length = asio::read(s,
44 asio::buffer(reply, request_length));
45 std::cout << "Reply is: ";
46 std::cout.write(reply, reply_length);
47 std::cout << "\n";
48 }
49 catch (std::exception& e)
50 {
51 std::cerr << "Exception: " << e.what() << "\n";
52 }
53
54 return 0;
55 }
56