DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org D6A97389244B
Subject: Re: AF_UNIX/SOCK_DGRAM is dropping messages
To: Ken Brown <kbrown@cornell.edu>, sten.kristian.ivarsson@gmail.com,
        cygwin@cygwin.com
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 <YFo/fFC2bITvnVGr@xps13> <00d901d7208e$97c05c50$c74114f0$@gmail.com>
 <860668bf-8cf9-0969-6a01-7fbf8b782db1@cornell.edu>
 <000901d72607$55dc5a90$01950fb0$@gmail.com>
 <3346cd1c-b93f-83c4-ff26-553ac95ec692@cornell.edu>
 <7c21a430-9609-7fd4-1a02-8b7c1978d2f8@cornell.edu>
Message-ID: <6a9ada5d-9749-3e08-be64-084b04cd819a@gmail.com>
Date: Tue, 6 Apr 2021 09:52:42 +0200
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From: Noel Grandin via Cygwin <cygwin@cygwin.com>
Reply-To: Noel Grandin <noelgrandin@gmail.com>
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On 2021/04/01 6:02 pm, Ken Brown via Cygwin wrote:
> Here's the issue, briefly.  The communication is done via a Windows named pipe. The receiver creates the pipe when it 
> creates and binds its socket.  It creates only one pipe instance.  The sender connects to the pipe, writes, and closes 
> its handle.  But the pipe is not available for another sender to connect to until the receiver reads the message, after 
> which it disconnects the sender.
> 

This

    https://docs.microsoft.com/en-us/windows/win32/ipc/named-pipe-instances

seems to indicate that multiple pipe instances are needed to handle multiple clients nicely - it also has sample code 
for such.
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