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//
// TimeServer.cpp
//
// $Id: //poco/1.4/Net/samples/TimeServer/src/TimeServer.cpp#1 $
//
// This sample demonstrates the TCPServer and ServerSocket classes.
//
// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Net/TCPServer.h"
#include "Poco/Net/TCPServerConnection.h"
#include "Poco/Net/TCPServerConnectionFactory.h"
#include "Poco/Net/TCPServerParams.h"
#include "Poco/Net/StreamSocket.h"
#include "Poco/Net/ServerSocket.h"
#include "Poco/Timestamp.h"
#include "Poco/DateTimeFormatter.h"
#include "Poco/DateTimeFormat.h"
#include "Poco/Exception.h"
#include "Poco/Util/ServerApplication.h"
#include "Poco/Util/Option.h"
#include "Poco/Util/OptionSet.h"
#include "Poco/Util/HelpFormatter.h"
#include <iostream>
using Poco::Net::ServerSocket;
using Poco::Net::StreamSocket;
using Poco::Net::TCPServerConnection;
using Poco::Net::TCPServerConnectionFactory;
using Poco::Net::TCPServer;
using Poco::Timestamp;
using Poco::DateTimeFormatter;
using Poco::DateTimeFormat;
using Poco::Util::ServerApplication;
using Poco::Util::Application;
using Poco::Util::Option;
using Poco::Util::OptionSet;
using Poco::Util::HelpFormatter;
class TimeServerConnection: public TCPServerConnection
/// This class handles all client connections.
///
/// A string with the current date and time is sent back to the client.
{
public:
TimeServerConnection(const StreamSocket& s, const std::string& format):
TCPServerConnection(s),
_format(format)
{
}
void run()
{
Application& app = Application::instance();
app.logger().information("Request from " + this->socket().peerAddress().toString());
try
{
Timestamp now;
std::string dt(DateTimeFormatter::format(now, _format));
dt.append("\r\n");
socket().sendBytes(dt.data(), (int) dt.length());
}
catch (Poco::Exception& exc)
{
app.logger().log(exc);
}
}
private:
std::string _format;
};
class TimeServerConnectionFactory: public TCPServerConnectionFactory
/// A factory for TimeServerConnection.
{
public:
TimeServerConnectionFactory(const std::string& format):
_format(format)
{
}
TCPServerConnection* createConnection(const StreamSocket& socket)
{
return new TimeServerConnection(socket, _format);
}
private:
std::string _format;
};
class TimeServer: public Poco::Util::ServerApplication
/// The main application class.
///
/// This class handles command-line arguments and
/// configuration files.
/// Start the TimeServer executable with the help
/// option (/help on Windows, --help on Unix) for
/// the available command line options.
///
/// To use the sample configuration file (TimeServer.properties),
/// copy the file to the directory where the TimeServer executable
/// resides. If you start the debug version of the TimeServer
/// (TimeServerd[.exe]), you must also create a copy of the configuration
/// file named TimeServerd.properties. In the configuration file, you
/// can specify the port on which the server is listening (default
/// 9911) and the format of the date/time string sent back to the client.
///
/// To test the TimeServer you can use any telnet client (telnet localhost 9911).
{
public:
TimeServer(): _helpRequested(false)
{
}
~TimeServer()
{
}
protected:
void initialize(Application& self)
{
loadConfiguration(); // load default configuration files, if present
ServerApplication::initialize(self);
}
void uninitialize()
{
ServerApplication::uninitialize();
}
void defineOptions(OptionSet& options)
{
ServerApplication::defineOptions(options);
options.addOption(
Option("help", "h", "display help information on command line arguments")
.required(false)
.repeatable(false));
}
void handleOption(const std::string& name, const std::string& value)
{
ServerApplication::handleOption(name, value);
if (name == "help")
_helpRequested = true;
}
void displayHelp()
{
HelpFormatter helpFormatter(options());
helpFormatter.setCommand(commandName());
helpFormatter.setUsage("OPTIONS");
helpFormatter.setHeader("A server application that serves the current date and time.");
helpFormatter.format(std::cout);
}
int main(const std::vector<std::string>& args)
{
if (_helpRequested)
{
displayHelp();
}
else
{
// get parameters from configuration file
unsigned short port = (unsigned short) config().getInt("TimeServer.port", 9911);
std::string format(config().getString("TimeServer.format", DateTimeFormat::ISO8601_FORMAT));
// set-up a server socket
ServerSocket svs(port);
// set-up a TCPServer instance
TCPServer srv(new TimeServerConnectionFactory(format), svs);
// start the TCPServer
srv.start();
// wait for CTRL-C or kill
waitForTerminationRequest();
// Stop the TCPServer
srv.stop();
}
return Application::EXIT_OK;
}
private:
bool _helpRequested;
};
int main(int argc, char** argv)
{
TimeServer app;
return app.run(argc, argv);
}