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Date: Thu, 14 Nov 2002 13:28:41 +0100
From: Thomas Pfaff <tpfaff AT gmx DOT net>
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To: mcnelson AT mindspring DOT com
CC: cygwin AT cygwin DOT com
Subject: Re: recvfrom bug
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Dr. M. C. Nelson wrote:
> Dear mailing list:
> 
> The following code works well on a Linux platform,
> 
>    int sockfd;
>   char buf[1024];
>   struct sockaddr fromaddr;
>   int fromlen;
> 
>  if ( (retv = recvfrom( sockfd, buf, sizeof(buf), 0, &fromaddr,&fromlen )) <
> 0 )
>     {
>       perror( "udpclient: recvfrom" );
>     }
> 
> However, in cygwin the following error message is produced:
> 
>       udpclient: recvfrom: Bad address
> 
> Can anyone tell me how to get pas this problem?

You must initialize fromlen with sizeof(fromaddr) prior to recvfrom.

int fromlen = sizeof(fromaddr).

Thomas




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