HTTPserver.h

//-------------------------------------------------------------------------------
//!
//!	\created	 10/Oct/12
//!	\brief		A class to implement simple HTTP server, 
//!     response to simple HTTP request.
//-------------------------------------------------------------------------------
#ifndef __HTTPSERVER_HPP__
#define __HTTPSERVER_HPP__

#define MAX_HTTP_URL_PATH_SIZE 260

namespace WebServer
{
	enum {
		EWebServerStatus_OK = 1,

		EWebServerStatus_BadRequest,
		EWebServerStatus_Forbidden,

		EWebServerStatus_InternalServerError,
	};

	//-------------------------------------------------------------------------------
	//! \class	SocketStream
	//!
	//! \brief	Declare a interface to read or write stream.
	//-------------------------------------------------------------------------------
	struct SocketStream 
	{
		virtual size_t Read( char* buf, size_t len ) = 0;
		virtual size_t Write( char* buf, size_t len ) = 0;
	};


	//-------------------------------------------------------------------------------
	//! \class	HTTPConnectResponser
	//!
	//! \brief	Declare a interface to response HTTP connection.
	//-------------------------------------------------------------------------------
	struct HTTPConnectContext 
	{
	};

	struct HTTPConnectResponser
	{
		virtual int ClientConnected( HTTPConnectContext* context ) = 0;
		virtual int ClientToDisconnect( HTTPConnectContext* context ) = 0;
		virtual int ClientDisconnected( HTTPConnectContext* context ) = 0;
	};


	//-------------------------------------------------------------------------------
	//! \class	HTTPGetResponser
	//!
	//! \brief	Declare a interface to response HTTP GET operation.
	//-------------------------------------------------------------------------------
	struct HTTPGETContext 
	{
		char m_Path[MAX_HTTP_URL_PATH_SIZE];
	};

	struct HTTPGETResponser
	{
		virtual int Get( HTTPGETContext* context ) = 0;
		virtual size_t GetContentLength();
		virtual size_t SendContent( SocketStream* stream );
	};

	//-------------------------------------------------------------------------------
	//! \class	HTTPServer
	//!
	//! \brief	Declare a class to listen local socket port and server 
	//!      as a simple HTTP server. Only support GET operation.
	//-------------------------------------------------------------------------------
	class HTTPServer
	{
	public:
		virtual ~HTTPServer() {}

		int Start(unsigned short port);
		int Stop();
		bool IsListening();

		void SetHTTPConnectResponser(HTTPConnectResponser* responser);
		void SetHTTPGETResponser(HTTPGETResponser* responser);

		static HTTPServer* Create();
		static void Destroy( HTTPServer* );
	};
}

#endif //__HTTPSERVER_HPP__