68 Ethernet module User’s Manual
Chapter 5 Computer Link Protocol and the PC Link Protocol Transmission
5
/*---------------------------------*/
/* Prototype declarations */
/*---------------------------------*/
int cl_send( int ); /* Register read/write processing */
void main()
{
int ists; /* Return status */
int isdp ; /* Socket identifier */
int i ; /* Loop counter */
struct sockaddr_in Soc;
WORD wVersionRequested = (0,1); /* WINSOC version number specification */
WSADATA WsaDtata ; /* WINSOC data structure */
/* Initialization */
ists = 0 ; /* Initial value setting */
/* Windows socket initialization */
ists = WSAStartup( wVersionRequested, &WsaDtata ) ;
if( ists == 0 ){ /* If normal return: */
isdp = socket(AF_INET, SOCK_DGRAM, 0); /* Create socket (UDP) */
if( isdp != INVALID_SOCKET ){ /* If normal return: */
Soc.sin_family = AF_INET;
Soc.sin_addr.s_addr = 0 ; /* Set local IP address */
Soc.sin_port = htons( MY_PORT ); /* Set local port number */
/* Execute bind processing */
ists = bind(isdp, (struct sockaddr *)&Soc, sizeof(Soc) );
if( ists != SOCKET_ERROR ){ /* If bind completed normally: */
for( i = 0; i < LOOP; i++){ /* Loop for the specified number of times */
ists = cl_send( isdp ); /* Register read/write processing */
if( ists != 0 ) /* If an error occurred in register
read/write processing */
break ; /* Terminate processing */
}
}
closesocket( isdp ) ; /* Socket close processing */
}
}
WSACleanup() ; /* Report WINSOC termination */
}
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