variadric tempalte args

examples/cpp03/asio/echo_client2.cpp

@@ -0,0 +1,63 @@
+//
+// blocking_tcp_echo_client.cpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2013 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <cstdlib>
+#include <cstring>
+#include <iostream>
+
+#include <boost/asio.hpp>
+#include <boost/date_time/posix_time/posix_time_types.hpp>
+#include <boost/thread.hpp>
+
+using boost::asio::ip::tcp;
+
+enum { max_length = 1024 };
+
+int main(int argc, char* argv[])
+{
+  try
+  {
+    if (argc != 3)
+    {
+      std::cerr << "Usage: blocking_tcp_echo_client <host> <port>\n";
+      return 1;
+    }
+
+    boost::asio::io_service io_service;
+
+    tcp::resolver resolver(io_service);
+    tcp::resolver::query query(tcp::v4(), argv[1], argv[2]);
+    tcp::resolver::iterator iterator = resolver.resolve(query);
+
+    tcp::socket s(io_service);
+    boost::asio::connect(s, iterator);
+
+    using namespace std; // For strlen.
+    std::cout << "Enter message: ";
+    char request[max_length];
+    std::cin.getline(request, max_length);
+    size_t request_length = strlen(request);
+    boost::asio::write(s, boost::asio::buffer(request, request_length));
+
+    char reply[max_length];
+    size_t reply_length = boost::asio::read(s,
+        boost::asio::buffer(reply, request_length));
+    std::cout << "Reply is: ";
+    std::cout.write(reply, reply_length);
+    std::cout << "\nWe block for 10 seconds in order to let session timeout\n";
+    boost::this_thread::sleep( boost::posix_time::seconds( 10) );
+  }
+  catch (std::exception& e)
+  {
+    std::cerr << "Exception: " << e.what() << "\n";
+  }
+
+  return 0;
+}