problem while using WSARecvFrom()

Hi!
I'm new to winsock.
I want two computer to communicata with UDP .
But wen I run the receiver program ,there will be always a error.
the errorcode is 10014 (invalid address)
the receiver can receive the event FD_READ
but when i use WSARecvFrom ,nothing can be read .
Even more the receiver will receive the event FD_READ again and again ,
Can you tell me why?

the code :

sender:

m_addr.sin_addr.s_addr=inet_addr(m_faraddr);
m_addr.sin_family=AF_INET;
m_addr.sin_port=htons(20001);

m_localaddr.sin_addr.s_addr=INADDR_ANY;
m_localaddr.sin_port=htons(10001);
m_localaddr.sin_family=AF_INET;

WSABUF wsaBuf;
wsaBuf.len=strMsg.GetLength();
wsaBuf.buf=strMsg.GetBuffer(wsaBuf.len);
int i=0;
iRetCode=WSASendTo(m_socket,&wsaBuf,1,(DWORD*)&i,0,(SOCKADDR*)&m_addr,sizeof(SOCKADDR),NULL,NULL);



receiver:


m_faraddr.sin_addr.s_addr=inet_addr(m_addr);
m_faraddr.sin_family=AF_INET;
m_faraddr.sin_port=htons(10001);
m_localaddr.sin_addr.s_addr=INADDR_ANY;
m_localaddr.sin_port=htons(20001);
m_localaddr.sin_family=AF_INET;

m_socket=WSASocket(AF_INET,SOCK_DGRAM,0,NULL,0,WSA_FLAG_MULTIPOINT_C_LEAF|WSA_FLAG_MULTIPOINT_D_LEAF);
.........................
char buffer[0x1000];
int iRet=0;
DWORD ret=0;
int iLen=sizeof(m_addr);
int iFlag=0;
WSABUF wsaRecvBuf;
wsaRecvBuf.len=0x1000;
wsaRecvBuf.buf=buffer


iRet=WSARecvFrom(m_socket,&wsaRecvBuf,1 ,&ret,0,(SOCKADDR*)&m_faraddr,&iLen,NULL,NULL);
/////here ret is always 0 and errorcode is 10014

please help me!!!!

Hello,
5th param of WSARecvFrom isn't a DWORD but a DWORD*.

try this:

DWORD flags = 0;
iRet=WSARecvFrom(m_socket,&wsaRecvBuf,1 ,&ret,&flags,(SOCKADDR*)&m_faraddr,&iLen,NULL,NULL);

thanks for you reply!

but i've try it in my program . the error code is still 10014. no letters could be receive. this error has troubled me for several days .and i still can't resovle it.

the error 10014 means invalid address. is there something wrong with my address? or my receive buffer is not big enough?

Use recvfrom and sendto instead.

ahoodin