/*
 *
 * @APPLE_LICENSE_HEADER_START@
 *
 * Copyright (c) 1999-2001 Apple Computer, Inc.  All Rights Reserved. The
 * contents of this file constitute Original Code as defined in and are
 * subject to the Apple Public Source License Version 1.2 (the 'License').
 * You may not use this file except in compliance with the License.  Please
 * obtain a copy of the License at http://www.apple.com/publicsource and
 * read it before using this file.
 *
 * This Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.  Please
 * see the License for the specific language governing rights and
 * limitations under the License.
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 * @APPLE_LICENSE_HEADER_END@
 *
 */
/*
	File:		ClientSocket.h

	
	
*/


#ifndef __CLIENT_SOCKET__
#define __CLIENT_SOCKET__

#include "OSHeaders.h"
#include "TCPSocket.h"

class ClientSocket
{
	public:
	
		ClientSocket();
		virtual ~ClientSocket() {}
		
		void	Set(UInt32 hostAddr, UInt16 hostPort)
			{ fHostAddr = hostAddr; fHostPort = hostPort; }
			
		//
		// Sends data to the server. If this returns EAGAIN or EINPROGRESS, call again
		// until it returns OS_NoErr or another error. On subsequent calls, you need not
		// provide a buffer.
		//
		// When this call returns EAGAIN or EINPROGRESS, caller should use GetEventMask
		// and GetSocket to wait for a socket event.
		OS_Error 	Send(const char* inData, const UInt32 inLength);

		//
		// Sends an ioVec to the server. Same conditions apply as above function 
		virtual OS_Error 	SendV(iovec* inVec, UInt32 inNumVecs) = 0;
		
		//
		// Reads data from the server. If this returns EAGAIN or EINPROGRESS, call
		// again until it returns OS_NoErr or another error. This call may return OS_NoErr
		// and 0 for rcvLen, in which case you should call it again.
		//
		// When this call returns EAGAIN or EINPROGRESS, caller should use GetEventMask
		// and GetSocket to wait for a socket event.
		virtual OS_Error 	Read(void* inBuffer, const UInt32 inLength, UInt32* outRcvLen) = 0;
		
		//
		// ACCESSORS
		UInt32			GetHostAddr()			{ return fHostAddr; }
		virtual UInt32	GetLocalAddr() = 0;

		// If one of the above methods returns EWOULDBLOCK or EINPROGRESS, you
		// can check this to see what events you should wait for on the socket
		UInt32		GetEventMask()			{ return fEventMask; }
		Socket*		GetSocket()				{ return fSocketP; }
		
		virtual void	SetRcvSockBufSize(UInt32 inSize) = 0;

	protected:
	
		// Generic connect function
		OS_Error 	Connect(TCPSocket* inSocket);	
		// Generic open function
		OS_Error 	Open(TCPSocket* inSocket);
		
		OS_Error 	SendSendBuffer(TCPSocket* inSocket);
	
		UInt32		fHostAddr;
		UInt16		fHostPort;
		
		UInt32		fEventMask;
		Socket*		fSocketP;

		enum
		{
			kSendBufferLen = 2048
		};
		
		// Buffer for sends.
		char		fSendBuf[kSendBufferLen + 1];
		StrPtrLen	fSendBuffer;
		UInt32		fSentLength;
};

class TCPClientSocket : public ClientSocket
{
	public:
		
		TCPClientSocket(UInt32 inSocketType);
		virtual ~TCPClientSocket() {}
		
		//
		// Implements the ClientSocket Send and Receive interface for a TCP connection
		virtual OS_Error 	SendV(iovec* inVec, UInt32 inNumVecs);
		virtual OS_Error 	Read(void* inBuffer, const UInt32 inLength, UInt32* outRcvLen);

		virtual UInt32	GetLocalAddr() { return fSocket.GetLocalAddr(); }
		virtual void	SetRcvSockBufSize(UInt32 inSize) { fSocket.SetSocketRcvBufSize(inSize); }
		virtual void 	SetOptions(int sndBufSize = 8192,int rcvBufSize=1024);
		
		virtual UInt16	GetLocalPort() { return fSocket.GetLocalPort(); }
		
	private:
	
		TCPSocket	fSocket;
};

class HTTPClientSocket : public ClientSocket
{
	public:
		
		HTTPClientSocket(const StrPtrLen& inURL, UInt32 inCookie, UInt32 inSocketType);
		virtual ~HTTPClientSocket();
		
		//
		// Closes the POST half of the RTSP / HTTP connection
		void				ClosePost() 	{ delete fPostSocket; fPostSocket = NULL; }

		//
		// Implements the ClientSocket Send and Receive interface for an RTSP / HTTP connection
		virtual OS_Error 	SendV(iovec* inVec, UInt32 inNumVecs);
		virtual OS_Error 	Read(void* inBuffer, const UInt32 inLength, UInt32* outRcvLen);

		virtual UInt32	GetLocalAddr() { return fGetSocket.GetLocalAddr();  }
		virtual void	SetRcvSockBufSize(UInt32 inSize) { fGetSocket.SetSocketRcvBufSize(inSize); }

	private:
	
		void 		EncodeVec(iovec* inVec, UInt32 inNumVecs);

		StrPtrLen	fURL;
		UInt32		fCookie;
		
		UInt32		fSocketType;
		UInt32		fGetReceived;
		TCPSocket	fGetSocket;
		TCPSocket*	fPostSocket;
};

#endif //__CLIENT_SOCKET__
