[lwip-devel] [task #15393] Support scoped literal IPv6 addresses in getaddrinfo

[Ashley Duncan]

URL:
  <https://savannah.nongnu.org/task/?15393>

                 Summary: Support scoped literal IPv6 addresses in getaddrinfo
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: ashesman
            Submitted on: Thu 19 Sep 2019 04:20:16 AM UTC
                Category: socket/netconn
         Should Start On: Thu 19 Sep 2019 12:00:00 AM UTC
   Should be Finished on: Thu 19 Sep 2019 12:00:00 AM UTC
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
        Percent Complete: 0%
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
                  Effort: 0.00

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Details:

It would be great if you could bind to a linklocal ip address used a scoped
literal type address through the APIs that just take a URI string.  E.g.
fe80::1ff:fe23:4567:890a%en1 or fe80::1ff:fe23:4567:890a%2.

mbedtls net abstraction layer only offers a bind that takes a char *.  Passing
a scoped link local IP address in causes the socket to be incorrectly bound to
zone 0 and hence cannot accept incoming packets.

Currently I cannot see a way to do this in a portable manner using the
existing APIs.

Of course, you can achieve this functionality through lower layer calls...

Please excuse if I have missed something...




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