udpsocket.h

跨操作系统的微型中间件

/*
    File:       UDPSocket.h

    Contains:   Adds additional Socket functionality specific to UDP.

    
    
    
*/


#ifndef __UDPSOCKET_H__
#define __UDPSOCKET_H__

#ifndef __Win32__
#include <sys/socket.h>
#include <sys/uio.h>
#endif

#include "Socket.h"


class   UDPSocket : public Socket
{
    public:
    
        //Another socket type flag (in addition to the ones defined in Socket.h).
        //The value of this can't conflict with those!
        enum
        {
            kWantsDemuxer = 0x0100 //UInt32
        };
    
        UDPSocket();
        virtual ~UDPSocket() {}

        //Open
        OS_Error		Open() { return Socket::Open(SOCK_DGRAM); }

	OS_Error		SetRemoteAddr(UInt32 inRemoteAddr, UInt16 inRemotePort);
			
        OS_Error		JoinMulticast(UInt32 inRemoteAddr);
        OS_Error		LeaveMulticast(UInt32 inRemoteAddr);
        OS_Error		SetTtl(UInt16 timeToLive);
        OS_Error		SetMulticastInterface(UInt32 inLocalAddr);

        //returns an ERRNO
	OS_Error		SendTo(const char* inBuffer, UInt32 inLength);
			
        OS_Error		SendTo(UInt32 inRemoteAddr, UInt16 inRemotePort,
                           void* inBuffer, UInt32 inLength);
                        
	OS_Error		RecvFrom(void* ioBuffer, UInt32 inBufLen, UInt32* outRecvLen);
        OS_Error		RecvFrom(UInt32* outRemoteAddr, UInt16* outRemotePort,
                             void* ioBuffer, UInt32 inBufLen, UInt32* outRecvLen);
                
    private:
        struct sockaddr_in  m_theRemoteAddr;
        struct sockaddr_in  fMsgAddr; // ?
};
#endif // __UDPSOCKET_H__