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Re: [lwip-users] Do not fragment (DF) in a UDP transmission.
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Re: [lwip-users] Do not fragment (DF) in a UDP transmission. |
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Date: |
Sat, 7 Mar 2020 10:02:44 +0100 |
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Am 06.03.2020 um 21:37 schrieb Roger Cover:
> Greetings,
>
> I am writing a video transmitter. The protocol I am using requires that a
> "test packet" has its do not fragment bit set. This is used to determine the
> maximum usable MTU of the intervening network nodes.
>
> I would like to know the recommended method for setting this bit in my UDP
> transmission. I am currently using the ip_output_if() function, and it does
> not have any arguments to allow this.
That's currently not supported (hasn't been requested so far). If you
tell me a standard way to do that (e.g. how is it done on sockets), I
guess adding this should not be too hard.
Regards,
Simon