When I look at my Wireshark capture,
however, I see that the Don't fragment Flag is "Not set". Am
I doing something wrong? I am using a Xilinx zynq 7000 Ultrascale
plus with the FreeRTOS bsp.
| Firmware Engineer
MeterSystems R&D - Boise Schweitzer
Engineering Laboratories Inc. 2350 NE Hopkins Court | Pullman, WA 99163
| 509.334.4917 | [hidden email] SEL: www.selinc.com
Re: Setting the IP_DF flag on my UDP socket not working
Am 29.10.2019 um 01:10 schrieb [hidden email]:
> 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
Care to open a task on our savannah bugtracker once you found out the
correct parameters to setsockopt?