NetUtils.h File Reference

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Macros
#define	ERRBUF_SIZE   1024

Functions
uint32	ResolveIP (const char *hostname, char *errbuf=0)

Macro Definition Documentation

#define ERRBUF_SIZE   1024

Definition at line 30 of file NetUtils.h.

Referenced by ResolveIP().

Function Documentation

uint32 ResolveIP	(	const char *	hostname,
		char *	errbuf = 0
	)

Definition at line 30 of file NetUtils.cpp.

References ERRBUF_SIZE, and snprintf.

                                                     {
#ifdef HAVE_WINSOCK2_H
    static InitWinsock ws;
#endif /* !HAVE_WINSOCK2_H */
    if( errbuf )
        errbuf[0] = 0;

    if( hostname == NULL )
    {
        if( errbuf )
            snprintf(errbuf, ERRBUF_SIZE, "ResolveIP(): hostname == NULL");
        return 0;
    }

    hostent* phostent = gethostbyname( hostname );
    if( phostent == NULL)
    {
        if( errbuf )
#ifdef HAVE_WINSOCK2_H
            snprintf( errbuf, ERRBUF_SIZE, "Unable to get the host name. Error: %i", WSAGetLastError() );
#else /* !HAVE_WINSOCK2_H */
            snprintf( errbuf, ERRBUF_SIZE, "Unable to get the host name. Error: %s", strerror( errno ) );
#endif /* !HAVE_WINSOCK2_H */
        return 0;
    }

    in_addr addr;
    memcpy( &addr, phostent->h_addr, phostent->h_length );

    return addr.s_addr;
}