text: //
  // HTTPFormServer.cpp
  //
  // This sample demonstrates the HTTPServer and HTMLForm classes.
  //
  // Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
  // and Contributors.
  //
  // SPDX-License-Identifier:	BSL-1.0
  //
  
  
  #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/HTMLForm.h"
  #include "Poco/Net/PartHandler.h"
  #include "Poco/Net/MessageHeader.h"
  #include "Poco/Net/ServerSocket.h"
  #include "Poco/CountingStream.h"
  #include "Poco/NullStream.h"
  #include "Poco/StreamCopier.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::HTTPRequestHandler;
  using Poco::Net::HTTPRequestHandlerFactory;
  using Poco::Net::HTTPServer;
  using Poco::Net::HTTPServerRequest;
  using Poco::Net::HTTPServerResponse;
  using Poco::Net::HTTPServerParams;
  using Poco::Net::MessageHeader;
  using Poco::Net::HTMLForm;
  using Poco::Net::NameValueCollection;
  using Poco::Util::ServerApplication;
  using Poco::Util::Application;
  using Poco::Util::Option;
  using Poco::Util::OptionSet;
  using Poco::Util::HelpFormatter;
  using Poco::CountingInputStream;
  using Poco::NullOutputStream;
  using Poco::StreamCopier;
  
  
  class MyPartHandler: public Poco::Net::PartHandler
  {
  public:
  	MyPartHandler():
  		_length(0)
  	{
  	}
  	
  	void handlePart(const MessageHeader& header, std::istream& stream)
  	{
  		_type = header.get("Content-Type", "(unspecified)");
  		if (header.has("Content-Disposition"))
  		{
  			std::string disp;
  			NameValueCollection params;
  			MessageHeader::splitParameters(header["Content-Disposition"], disp, params);
  			_name = params.get("name", "(unnamed)");
  			_fileName = params.get("filename", "(unnamed)");
  		}
  		
  		CountingInputStream istr(stream);
  		NullOutputStream ostr;
  		StreamCopier::copyStream(istr, ostr);
  		_length = istr.chars();
  	}
  	
  	int length() const
  	{
  		return _length;
  	}
  	
  	const std::string& name() const
  	{
  		return _name;
  	}
  
  	const std::string& fileName() const
  	{
  		return _fileName;
  	}
  	
  	const std::string& contentType() const
  	{
  		return _type;
  	}
  	
  private:
  	int _length;
  	std::string _type;
  	std::string _name;
  	std::string _fileName;
  };
  
  
  class FormRequestHandler: public HTTPRequestHandler
  	/// Return a HTML document with the current date and time.
  {
  public:
  	FormRequestHandler()
  	{
  	}
  	
  	void handleRequest(HTTPServerRequest& request, HTTPServerResponse& response)
  	{
  		Application& app = Application::instance();
  		app.logger().information("Request from " + request.clientAddress().toString());
  
  		MyPartHandler partHandler;
  		HTMLForm form(request, request.stream(), partHandler);
  
  		response.setChunkedTransferEncoding(true);
  		response.setContentType("text/html");
  
  		std::ostream& ostr = response.send();
  		
  		ostr <<
  			"<html>\n"
  			"<head>\n"
  			"<title>POCO Form Server Sample</title>\n"
  			"</head>\n"
  			"<body>\n"
  			"<h1>POCO Form Server Sample</h1>\n"
  			"<h2>GET Form</h2>\n"
  			"<form method=\"GET\" action=\"/form\">\n"
  			"<input type=\"text\" name=\"text\" size=\"31\">\n"
  			"<input type=\"submit\" value=\"GET\">\n"
  			"</form>\n"
  			"<h2>POST Form</h2>\n"
  			"<form method=\"POST\" action=\"/form\">\n"
  			"<input type=\"text\" name=\"text\" size=\"31\">\n"
  			"<input type=\"submit\" value=\"POST\">\n"
  			"</form>\n"
  			"<h2>File Upload</h2>\n"
  			"<form method=\"POST\" action=\"/form\" enctype=\"multipart/form-data\">\n"
  			"<input type=\"file\" name=\"file\" size=\"31\"> \n"
  			"<input type=\"submit\" value=\"Upload\">\n"
  			"</form>\n";
  			
  		ostr << "<h2>Request</h2><p>\n";
  		ostr << "Method: " << request.getMethod() << "<br>\n";
  		ostr << "URI: " << request.getURI() << "<br>\n";
  		NameValueCollection::ConstIterator it = request.begin();
  		NameValueCollection::ConstIterator end = request.end();
  		for (; it != end; ++it)
  		{
  			ostr << it->first << ": " << it->second << "<br>\n";
  		}
  		ostr << "</p>";
  
  		if (!form.empty())
  		{
  			ostr << "<h2>Form</h2><p>\n";
  			it = form.begin();
  			end = form.end();
  			for (; it != end; ++it)
  			{
  				ostr << it->first << ": " << it->second << "<br>\n";
  			}
  			ostr << "</p>";
  		}
  		
  		if (!partHandler.name().empty())
  		{
  			ostr << "<h2>Upload</h2><p>\n";
  			ostr << "Name: " << partHandler.name() << "<br>\n";
  			ostr << "File Name: " << partHandler.fileName() << "<br>\n";
  			ostr << "Type: " << partHandler.contentType() << "<br>\n";
  			ostr << "Size: " << partHandler.length() << "<br>\n";
  			ostr << "</p>";
  		}
  		ostr << "</body>\n";
  	}
  };
  
  
  class FormRequestHandlerFactory: public HTTPRequestHandlerFactory
  {
  public:
  	FormRequestHandlerFactory()
  	{
  	}
  
  	HTTPRequestHandler* createRequestHandler(const HTTPServerRequest& request)
  	{
  		return new FormRequestHandler;
  	}
  };
  
  
  class HTTPFormServer: public Poco::Util::ServerApplication
  	/// The main application class.
  	///
  	/// This class handles command-line arguments and
  	/// configuration files.
  	/// Start the HTTPFormServer executable with the help
  	/// option (/help on Windows, --help on Unix) for
  	/// the available command line options.
  	///
  	/// To use the sample configuration file (HTTPFormServer.properties),
  	/// copy the file to the directory where the HTTPFormServer executable
  	/// resides. If you start the debug version of the HTTPFormServer
  	/// (HTTPFormServerd[.exe]), you must also create a copy of the configuration
  	/// file named HTTPFormServerd.properties. In the configuration file, you
  	/// can specify the port on which the server is listening (default
  	/// 9980) and the format of the date/Form string sent back to the client.
  	///
  	/// To test the FormServer you can use any web browser (http://localhost:9980/).
  {
  public:
  	HTTPFormServer(): _helpRequested(false)
  	{
  	}
  	
  	~HTTPFormServer()
  	{
  	}
  
  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 web server that shows how to work with HTML forms.");
  		helpFormatter.format(std::cout);
  	}
  
  	int main(const std::vector<std::string>& args)
  	{
  		if (_helpRequested)
  		{
  			displayHelp();
  		}
  		else
  		{
  			unsigned short port = (unsigned short) config().getInt("HTTPFormServer.port", 9980);
  			
  			// set-up a server socket
  			ServerSocket svs(port);
  			// set-up a HTTPServer instance
  			HTTPServer srv(new FormRequestHandlerFactory, svs, new HTTPServerParams);
  			// start the HTTPServer
  			srv.start();
  			// wait for CTRL-C or kill
  			waitForTerminationRequest();
  			// Stop the HTTPServer
  			srv.stop();
  		}
  		return Application::EXIT_OK;
  	}
  	
  private:
  	bool _helpRequested;
  };
  
  
  int main(int argc, char** argv)
  {
  	HTTPFormServer app;
  	return app.run(argc, argv);
  }
  