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Re: recvfrom + MSG_PEEK = broken?
On 3/22/2010 1:54 PM, Corinna Vinschen wrote:
On Mar 22 13:40, Eliot Moss wrote:
On 3/22/2010 1:37 PM, Christopher Faylor wrote:
On Mon, Mar 22, 2010 at 05:01:00PM +0100, Corinna Vinschen wrote:
On Mar 22 10:56, Charles Wilson wrote:
On 3/22/2010 7:03 AM, Corinna Vinschen wrote:
On Mar 22 02:04, Charles Wilson wrote:
I've been tracking down a problem in xinetd. It appears to be an issue
with using MSG_PEEK in recvfrom() on UDP sockets.
Yes, that's a bug in Cygwin. The socket event handling got messed up
when MSG_PEEK was used. I fixed that in CVS so it will be in 1.7.2.
Confirmed: fixes both my testcase, and the error in xinetd. Thanks for
the quick turnaround! I was about ready to pull my hair out on this
Sure. I'm glad I had a simple testcase for a socket problem. If only
somebody would come up with an equally simple testcase for the rsync
problem...
I thought the rsync problem was due to the fact that select for write on
pipes is unreliable.
The problem has been observed with rsync using socketpairs in the first
place. The first reports claimed that building rsync with pipes fixed
the issue. Only a later report on the list claimed that the problem
still exists even with pipes. I don't dare to make any assumption of
the actual reason :|
Right ... I am the one where building w/out socketpairs
definitely fixes it. I on Windows 7, 64-bit, and have one
BLODA item still installed (at your previous request so
that we can check for bugs that were related to socketpair
*completely* failing with rsync before -- back in November.)
Regards -- Eliot
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