coroutine: initial commit

[SVN r81769]

example/asio/stream_client.cpp

@@ -0,0 +1,64 @@
+#include <cstdlib>
+#include <iostream>
+#include <stdexcept>
+
+#include <boost/asio.hpp>
+#include <boost/date_time/posix_time/posix_time.hpp>
+#include <boost/program_options.hpp>
+#include <boost/thread.hpp>
+
+int main( int argc, char* argv[])
+{
+    try
+    {
+        std::string host, msg, port;
+        int timeout = 1;
+        boost::program_options::options_description desc("allowed options");
+        desc.add_options()
+            ("help,h", "help message")
+            ("host,a", boost::program_options::value< std::string >( & host), "host running the service")
+            ("port,p", boost::program_options::value< std::string >( & port), "port service is listening")
+            ("message,m", boost::program_options::value< std::string >( & msg), "message to send")
+            ("timeout,t", boost::program_options::value< int >( & timeout), "timeout between message 'exit' message in seconds");
+
+        boost::program_options::variables_map vm;
+        boost::program_options::store(
+            boost::program_options::parse_command_line(
+                argc,
+                argv,
+                desc),
+            vm);
+        boost::program_options::notify( vm);
+ 
+        if ( vm.count("help") ) {
+            std::cout << desc << std::endl;
+            return EXIT_SUCCESS;
+        }
+
+        boost::asio::io_service io_service;
+
+        boost::asio::ip::tcp::resolver resolver( io_service);
+        boost::asio::ip::tcp::resolver::query query( boost::asio::ip::tcp::v4(), host, port);
+        boost::asio::ip::tcp::resolver::iterator iterator( resolver.resolve( query) );
+
+        boost::asio::ip::tcp::socket s( io_service);
+        s.connect( * iterator);
+
+        msg.append("\n"); // each message is terminated by newline
+        boost::asio::write( s, boost::asio::buffer( msg, msg.size() ) );
+        std::cout << msg << " sendet" << std::endl;
+        boost::this_thread::sleep( boost::posix_time::seconds( timeout) );
+        std::string exit("exit\n"); // newline
+        boost::asio::write( s, boost::asio::buffer( exit, exit.size() ) );
+        std::cout << exit << " sendet" << std::endl;
+
+        std::cout << "Done" << std::endl;
+        return EXIT_SUCCESS;
+    }
+    catch ( std::exception const& e)
+    {
+        std::cerr << "Exception: " << e.what() << "\n";
+    }
+
+    return EXIT_FAILURE;
+}