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Re: [lwip-users] Using "localhost" in calls of getaddrinfo and inet_ntop
From: |
Thomas Nittel |
Subject: |
Re: [lwip-users] Using "localhost" in calls of getaddrinfo and inet_ntop |
Date: |
Sun, 20 Aug 2017 11:07:45 +0200 (CEST) |
Hi, Joel,
thanks for your reply.
Using your hint I searched again and found that "#define LWIP_NETIF_LOOPBACK 1"
was missing in my lwipopts.h file. Now getaddrinfo and inet_ntop work :-)
Sorry for making noise on this mailinglist.
Thomas
>> On Aug 16, 2017, at 4:09 PM, Thomas Nittel <address@hidden> wrote:
>>
>> I like to use a software package on top of lwIP. This software package calls
>> getaddrinfo("localhost", servname, hints, res) and
>> inet_ntop(af,src,"localhost",size). As far as I conceived the lwIP source
>> code lwIP doesn't know what to do with "localhost". What can be done to make
>> the above function calls with "localhost" succeed?
>>
>
> Could you be a little more specific about the failure.
> netconn_gethostbyname()
works with localhost. I just verified it with the shell command (in
lwip-contrib/apps):
>
>> gethostnm localhost
> Host found: 127.0.0.1
>
> Is there a problem specifically in getaddrinfo (even though this internally
uses netconn_gethostbyname)?
> Joel