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#include "Poco/Net/HTTPServer.h"
#include "Poco/Net/HTTPRequestHandler.h"
#include "Poco/Net/HTTPRequestHandlerFactory.h"
#include "Poco/Net/HTTPServerParams.h"
#include "Poco/Net/HTTPServerRequest.h"
#include "Poco/Net/HTTPServerResponse.h"
#include "Poco/Net/HTTPServerParams.h"
#include "Poco/Net/ServerSocket.h"
#include "Poco/Timestamp.h"
#include "Poco/DateTimeFormatter.h"
#include "Poco/DateTimeFormat.h"
#include "Poco/Exception.h"
#include "Poco/ThreadPool.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::HTTPRequestHandler;
using Poco::Net::HTTPRequestHandlerFactory;
using Poco::Net::HTTPServer;
using Poco::Net::HTTPServerRequest;
using Poco::Net::HTTPServerResponse;
using Poco::Net::HTTPServerParams;
using Poco::Timestamp;
using Poco::DateTimeFormatter;
using Poco::DateTimeFormat;
using Poco::ThreadPool;
using Poco::Util::ServerApplication;
using Poco::Util::Application;
using Poco::Util::Option;
using Poco::Util::OptionSet;
using Poco::Util::OptionCallback;
using Poco::Util::HelpFormatter;
class TimeRequestHandler: public HTTPRequestHandler
{
public:
TimeRequestHandler(const std::string& format): _format(format)
{
}
void handleRequest(HTTPServerRequest& request,
HTTPServerResponse& response)
{
Application& app = Application::instance();
app.logger().information("Request from "
+ request.clientAddress().toString());
Timestamp now;
std::string dt(DateTimeFormatter::format(now, _format));
response.setChunkedTransferEncoding(true);
response.setContentType("text/html");
std::ostream& ostr = response.send();
ostr << "<html><head><title>HTTPTimeServer powered by "
"POCO C++ Libraries</title>";
ostr << "<meta http-equiv=\"refresh\" content=\"1\"></head>";
ostr << "<body><p style=\"text-align: center; "
"font-size: 48px;\">";
ostr << dt;
ostr << "</p></body></html>";
}
private:
std::string _format;
};
class TimeRequestHandlerFactory: public HTTPRequestHandlerFactory
{
public:
TimeRequestHandlerFactory(const std::string& format):
_format(format)
{
}
HTTPRequestHandler* createRequestHandler(
const HTTPServerRequest& request)
{
if (request.getURI() == "/")
return new TimeRequestHandler(_format);
else
return 0;
}
private:
std::string _format;
};
class HTTPTimeServer: public Poco::Util::ServerApplication
{
public:
HTTPTimeServer(): _helpRequested(false)
{
}
~HTTPTimeServer()
{
}
protected:
void initialize(Application& self)
{
loadConfiguration();
ServerApplication::initialize(self);
}
void uninitialize()
{
ServerApplication::uninitialize();
}
void defineOptions(OptionSet& options)
{
ServerApplication::defineOptions(options);
options.addOption(
Option("help", "h", "display argument help information")
.required(false)
.repeatable(false)
.callback(OptionCallback<HTTPTimeServer>(
this, &HTTPTimeServer::handleHelp)));
}
void handleHelp(const std::string& name,
const std::string& value)
{
HelpFormatter helpFormatter(options());
helpFormatter.setCommand(commandName());
helpFormatter.setUsage("OPTIONS");
helpFormatter.setHeader(
"A web server that serves the current date and time.");
helpFormatter.format(std::cout);
stopOptionsProcessing();
_helpRequested = true;
}
int main(const std::vector<std::string>& args)
{
if (!_helpRequested)
{
unsigned short port = (unsigned short)
config().getInt("HTTPTimeServer.port", 9980);
std::string format(
config().getString("HTTPTimeServer.format",
DateTimeFormat::SORTABLE_FORMAT));
ServerSocket svs(port);
HTTPServer srv(new TimeRequestHandlerFactory(format),
svs, new HTTPServerParams);
srv.start();
waitForTerminationRequest();
srv.stop();
}
return Application::EXIT_OK;
}
private:
bool _helpRequested;
};
int main(int argc, char** argv)
{
HTTPTimeServer app;
return app.run(argc, argv);
}
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