Re: [lwip-users] Setting the IP_DF flag on my UDP socket not working

[address@hidden]

Am 29.10.2019 um 01:10 schrieb address@hidden:
> Hello,
> I am working on an application where I am streaming data over UDP using
> lwip sendto().I am trying to set the don't fragment flag on my UDP
> socket as follows:
>
> int enable = 1;
> setsockopt(sock, SOL_SOCKET, IP_DF, reinterpret_cast<const void
> *>(&enable), static_cast<socklen_t>(sizeof enable));

Where did you get the idea to do it like that?

We try to follow the opengroup standard for socket functions. In other
words, try what you want on Linux/BSD (etc) and if it works, use that
code on lwIP.

However, I can tell you right now that this is not currently supported.
Adding support should not be that hard, however, and is probably a good
idea.

Care to open a task on our savannah bugtracker once you found out the
correct parameters to setsockopt?

Regards,
Simon