[lwip-devel] [patch #9202] tcp: Make tcp_listen_with_backlog_and_err return NULL if the address/port is already used

[Axel Lin]

URL:
  <http://savannah.nongnu.org/patch/?9202>

                 Summary: tcp: Make tcp_listen_with_backlog_and_err return
NULL if the address/port is already used
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: axellin
            Submitted on: Sun 01 Jan 2017 07:45:58 AM GMT
                Category: None
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None

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Details:

The caller of tcp_listen_with_backlog_and_err() usually check if the return
pcb is NULL before checking the err reason. I think the commit adding
tcp_listen_with_backlog_and_err() accidently change the behavior, Fix it.

Fixes: 98fc82fa7128 ("added function tcp_listen_with_backlog_and_err() to get
the error reason when listening fails")



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File Attachments:


-------------------------------------------------------
Date: Sun 01 Jan 2017 07:45:58 AM GMT  Name:
0001-tcp-Make-tcp_listen_with_backlog_and_err-return-NULL.patch  Size: 1kB  
By: axellin

<http://savannah.nongnu.org/patch/download.php?file_id=39337>

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