Re: talkd

From: David S. Miller (davem@redhat.com)
Date: Mon Jan 31 2000 - 07:14:54 EST


   From: Mateus Cordeiro Inssa <mateus@ifnet.com.br>
   Date: Mon, 31 Jan 2000 09:13:57 -0200 (BRDT)

     Of course the application check for errors, but the error always
   occur in the first recvfrom. The application doesn't change any
   socket property, so I assume it is on blocking mode.

     The sequence is: socket, bind, select,recvfrom. No one uses any
   extra param.

Right, and if recvfrom returns an error, the sockaddr structure
holds garbage. It's contents cannot be relied upon, and what
I get from your report is that the sockaddr passed to recvfrom
is the same one which gets passed to sendto/sendmsg. That is
wrong, and is what causes the problem. The application in question
needs to be fixed if this is the case.

Later,
David S. Miller
davem@redhat.com

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