IP do-not-fragment flag support #1117
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Catchup with laters iper3 changes
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Version of iperf3 (or development branch, such as
masteror3.1-STABLE) to which this pull request applies:3.9+
Issues fixed (if any):
Reduce default UDP Package size to physically MTU - use WSA Registered IO on windows to receive UDP packages #1107
Brief description of code changes (suitable for use as a commit message):
Adding support for setting IP dont-fragment flag, by adding
--dont-fragmentoption.The option works well for Windows using CigWin.
For Linux, for some reason my system always set the Dont Fragment flag, so I was not able to test whether setting the option works. However, I tested that that the opposite works - asking to not set the flag (
IP_PMTUDISC_DONT). Therefore I believe that asking to set the flag (IP_PMTUDISC_DO), which is what is in the code, also works o.k.