blocking_tcp_echo_client.cpp 1.3 KB

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  1. //
  2. // blocking_tcp_echo_client.cpp
  3. // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  4. //
  5. // Copyright (c) 2003-2019 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. #include <cstdlib>
  11. #include <cstring>
  12. #include <iostream>
  13. #include <boost/asio.hpp>
  14. using boost::asio::ip::tcp;
  15. enum { max_length = 1024 };
  16. int main(int argc, char* argv[])
  17. {
  18. try
  19. {
  20. if (argc != 3)
  21. {
  22. std::cerr << "Usage: blocking_tcp_echo_client <host> <port>\n";
  23. return 1;
  24. }
  25. boost::asio::io_context io_context;
  26. tcp::socket s(io_context);
  27. tcp::resolver resolver(io_context);
  28. boost::asio::connect(s, resolver.resolve(argv[1], argv[2]));
  29. std::cout << "Enter message: ";
  30. char request[max_length];
  31. std::cin.getline(request, max_length);
  32. size_t request_length = std::strlen(request);
  33. boost::asio::write(s, boost::asio::buffer(request, request_length));
  34. char reply[max_length];
  35. size_t reply_length = boost::asio::read(s,
  36. boost::asio::buffer(reply, request_length));
  37. std::cout << "Reply is: ";
  38. std::cout.write(reply, reply_length);
  39. std::cout << "\n";
  40. }
  41. catch (std::exception& e)
  42. {
  43. std::cerr << "Exception: " << e.what() << "\n";
  44. }
  45. return 0;
  46. }