Re: [lwip-users] Using "localhost" in calls of getaddrinfo and inet_ntop

[Thomas Nittel]

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