[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[lwip-devel] [bug #55171] Binding UDP PCB with different IP type PCBs do

From: Dirk Ziegelmeier
Subject: [lwip-devel] [bug #55171] Binding UDP PCB with different IP type PCBs does not work
Date: Thu, 6 Dec 2018 08:39:57 -0500 (EST)
User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:63.0) Gecko/20100101 Firefox/63.0


                 Summary: Binding UDP PCB with different IP type PCBs does not
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: dziegel
            Submitted on: Thu 06 Dec 2018 01:39:55 PM UTC
                Category: UDP
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: dziegel
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: git head



reported by Email from Stian Skjelstad:


I just updated my code to the recent master, and this commit breaks my code:

I have two UDP sockets listening at the same port. One a IPv4 only PCB, and
when trying to listen with an IPv6 only PCB at the same port, it fails.

from udp.c after this commit:
    for (ipcb = udp_pcbs; ipcb != NULL; ipcb = ipcb->next) {
          if ((ipcb->local_port == port) &&
              (ip_addr_cmp(&ipcb->local_ip, ipaddr) || ip_addr_isany(ipaddr)
            return ERR_USE;

ip_addr_isany should be IP_IS_ANY_TYPE_VAL instead, so that it only hits
dual-stack listeners?


Reply to this item at:


  Message sent via Savannah

reply via email to

[Prev in Thread] Current Thread [Next in Thread]