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git-svn-id: svn://elaine/murooma/trunk@144 d8a302eb-03bc-478d-80e4-98257eca68ef

blocking_tcp_echo_client.cpp

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+//
+// blocking_tcp_echo_client.cpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2010 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 <chrono>
+#include <ctime>   // localtime
+#include <sstream> // stringstream
+#include <iomanip>
+
+
+using boost::asio::ip::tcp;
+using namespace std;
+using namespace std::chrono;
+
+
+enum { max_length = 1024 };
+
+
+std::string return_current_time_and_date()
+{
+    auto now = system_clock::now();
+    auto in_time_t = system_clock::to_time_t(now);
+	system_clock::duration ms = now.time_since_epoch();
+	char buff[20];
+	strftime(buff, 20, "%Y-%m-%d %H:%M:%S", localtime(&in_time_t));
+	stringstream ss;
+	ss << buff << "." << std::setw(3) << std::setfill('0') << ((ms / milliseconds(1)) % 1000);
+    return ss.str();
+}
+
+int main(int argc, char* argv[])
+{
+	if (argc != 3)
+	{
+		std::cerr << "Usage: blocking_tcp_echo_client <host> <port>\n";
+		return 1;
+	}
+	try
+	{
+		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);
+
+		while (true)
+		{
+			try
+			{
+				tcp::socket s(io_service);
+				s.connect(*iterator);
+				boost::array<char, 128> buf;
+				boost::system::error_code error;
+
+				while (true)
+				{
+					size_t len = s.read_some(boost::asio::buffer(buf), error);
+					if (error == boost::asio::error::eof)
+						break;
+
+					std::cout.write(buf.data(), len);
+				}
+			}
+			catch (std::exception& e)
+			{
+				std::cerr << "Exception: " << e.what() << "\n";
+				usleep(100*1000);
+			}
+		}
+	}
+	catch (std::exception& e)
+	{
+		std::cerr << "Exception: " << e.what() << "\n";
+	}
+
+  return 0;
+}
+
+