AF_UNIX/SOCK_DGRAM is dropping messages
Tue Apr 6 14:59:11 GMT 2021
On 4/6/2021 3:52 AM, Noel Grandin wrote:
> 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.
> seems to indicate that multiple pipe instances are needed to handle multiple
> clients nicely - it also has sample code for such.
Yes, we do that for stream sockets that are listening. Whenever there's a
connection, a new pipe instance is created so that the listening socket can
continue listening. But I don't see an easy way to adapt this to datagram
sockets, and I'm not even sure it's appropriate in that case.
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