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Date: Mon, 23 Feb 2009 09:33:19 -0600
From: Brian Ford <Brian DOT Ford AT FlightSafety DOT com>
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Subject: Re: Multicast Blocking Receiving Socket in Cygwin
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On Mon, 23 Feb 2009, victhor_1983 wrote:

> I am using a Multicast socket to receive UDP datagrams on Cygwin. I thought
> the sockets in Cygwin were blocking by defect (that is, the program waits at
> recvfrom() until it read something on the socket). However, my program does
> not wait, it keeps running. I didn't use fcntl or any other instruction to
> make the socket non-blocking, is there any way to make the socket blocking?

You are correct in that they should be blocking by default (and were/are
AFAIK).  Is this in Cygwin 1.5 or 1.7?  Can we see a source fragment?
What is errno?

-- 
Brian Ford
Staff Realtime Software Engineer
VITAL - Visual Simulation Systems
FlightSafety International
the best safety device in any aircraft is a well-trained crew...

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