our current experimental Neutrino branch

git-svn-id: file:///home/bas/coolstream_public_svn/THIRDPARTY/applications/neutrino-experimental@27 e54a6e83-5905-42d5-8d5c-058d10e6a962

src/nhttpd/yhttpd_core/ywebserver.h

@@ -0,0 +1,91 @@
+//=============================================================================
+// YHTTPD
+// Webserver Class : Until now: exact one instance 
+//-----------------------------------------------------------------------------
+// The Webserver Class creates one "master" Listener Socket on given Port.
+// If a Connection is accepted, a new Socket ist used. The Webserver creates
+// a new Connection-Class witch is (normaly) Threaded. The Connection-Class
+// handles Request and Response.
+// For HTTP/1.1 permanent Connections (keep-alive) socket-multiplexing using
+// FD_SET and select() is implemented. Sockets are stored in SocketList and
+// can be reused for the connected client (to reduce socket handling overhead).
+// Reuse of connections is often done by pipelinig (read->send->read->send ...)
+//=============================================================================
+#ifndef __yhttpd_ywebserver_h__
+#define __yhttpd_ywebserver_h__
+
+// system
+#include <netinet/in.h>
+#include <sys/types.h>
+#include <arpa/inet.h>
+
+// yhttpd
+#include "yconfig.h"
+#include "ytypes_globals.h"
+#include "ysocket.h"
+
+//-----------------------------------------------------------------------------
+class CWebserver; //forward declaration
+
+//-----------------------------------------------------------------------------
+// Arguments for Connection-Thread
+//-----------------------------------------------------------------------------
+typedef struct
+{
+	CySocket 	*ySock;			// Connection "Slave" Socket
+	CWebserver 	*WebserverBackref;	// Backreference to Webserver
+	bool		is_treaded;		// Use threading?
+	int		thread_number;		// Number of Thread (informational use)
+} TWebserverConnectionArgs;
+
+//-----------------------------------------------------------------------------
+// until now: One Instance for one hosted Web
+//-----------------------------------------------------------------------------
+class CWebserver
+{
+private:
+	static pthread_mutex_t	mutex;
+	pthread_t 	Connection_Thread_List[HTTPD_MAX_CONNECTIONS]; //Thread-List per webserver
+	fd_set 		master;   				// master file descriptor list for select()
+	fd_set 		read_fds; 				// read file descriptor list for select()
+	int 		fdmax;        				// maximum file descriptor number
+	CySocket 	*SocketList[HTTPD_MAX_CONNECTIONS];	// List of concurrent hadled connections
+	int		open_connections;			// Number of opened connections
+	pthread_attr_t 	attr;					// pthread Attributes for deattach
+protected:
+	bool 		terminate;				// flag: indicate to terminate the Webserver
+	CySocket 	listenSocket;				// Master Socket for listening
+	unsigned int 	port;					// Port to listen on
+	bool 		handle_connection(CySocket *newSock);	// Create a new Connection Instance and handle Connection
+
+	// Connection Socket handling
+	int 		AcceptNewConnectionSocket();		// Start new Socket connection
+	void 		CloseConnectionSocketsByTimeout();	// Check Sockets to close
+	void 		SL_CloseSocketBySlot(int slot);		// Close socket by slot index
+	int 		SL_GetExistingSocket(SOCKET sock);	// look for socket reuse
+	int 		SL_GetFreeSlot();			// get free slot
+	
+
+public:
+	static bool 	is_threading;				// Use Threading for new Connections
+	CStringVector 	conf_no_keep_alive_ips;			// List of IP for NO keep-alive
+
+	// constructor & destructor
+	CWebserver();
+	~CWebserver(void);
+
+	void 		init(unsigned int _port, bool _is_threading) // Initialize Webserver Settings
+				{port=_port; is_threading=_is_threading;}
+	void		set_conf_no_keep_alive_ips(CStringVector _conf_no_keep_alive_ips)
+				{conf_no_keep_alive_ips=_conf_no_keep_alive_ips;}
+	bool 		run(void);				// Start the Webserver
+	void 		stop(void)				// Stop the Webserver
+				{terminate=true;}; 
+
+	// public for WebTread
+	void 		clear_Thread_List_Number(int number);	// Set Entry(number)to NULL in Threadlist 
+	void		addSocketToMasterSet(SOCKET fd); 	// add Socket to select master set
+	bool		CheckKeepAliveAllowedByIP(std::string client_ip); // Check if IP is allowed for keep-alive
+};
+
+#endif // __yhttpd_ywebserver_h__