Hi POSIX.1 requires recv(2) to return 0 for connected sockets when no more data is available and the connexion was closed. We do it but we do not document it. What about this chnage?
Index: recv.2 =================================================================== RCS file: /cvsroot/src/lib/libc/sys/recv.2,v retrieving revision 1.29 diff -U 2 -r1.29 recv.2 --- recv.2 27 Jun 2011 08:21:08 -0000 1.29 +++ recv.2 1 Feb 2012 08:44:49 -0000 @@ -96,4 +96,6 @@ set to .Er EAGAIN . +If no data is available and the remote peer was shut down, +0 is returned. The receive calls normally return any data available, up to the requested amount, @@ -231,5 +233,6 @@ .Sh RETURN VALUES These calls return the number of bytes received, or \-1 -if an error occurred. +if an error occurred. For connected sockets whose remote peer was shut down, +0 is returned when no more data is available. .Sh ERRORS The calls fail if: -- Emmanuel Dreyfus m...@netbsd.org
