lib-bsd socket close issues

Peter Dufault dufault at
Fri Apr 5 11:35:48 UTC 2019

A basic question you probably checked: Are your sockets in TIME_WAIT state?

> On Apr 5, 2019, at 07:04 , Sebastian Huber <sebastian.huber at> wrote:
> On 05/04/2019 12:41, Matthew J Fletcher wrote:
>> Hi,
>> I've not been able to reproduce either in a simple test case yet, which would lead to the obvious conclusion that there is some fault in my application. However, from my diagnostics i can see that a) all opened socket FD's are being passed to close() and b) that close() is not returning an error. The particular case is when my application tries to connect(), which fails as the tcp port is not open.
>> The application is a reasonably complex multi task project that will have lots of threads using sockets at the same time, could that be relevant ?
>> Interestingly i've also had problems with the httpd (mongoose) server "leaking" if web pages are opened to quickly as well, i never really got to the bottom of it, i just ended up at 512 sockets and hope people dont view pages to quickly.
> You can view the status of the sockets with the "netstat -la" command. Maybe it helps to port also the SOCKSTAT(1) command:
> -- 
> Sebastian Huber, embedded brains GmbH
> Address : Dornierstr. 4, D-82178 Puchheim, Germany
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Peter Dufault
HD Associates, Inc.      Software and System Engineering

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