fix(s2n-quic-platform): increase cmsg buffer size for multiple pktinfo #1819
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Description of changes:
In testing, I was seeing ECN markings get disabled. After some digging, this is due to the OS returning both
pktinfoandpktinfo6and the cmsg buffer not having enough capacity for those.As such, I've added the sizes for both rather than taking the max.
Testing:
I also added an assertion to make sure the cmsg buffer wasn't truncated in testing. I didn't make it a
debug_assert, since I'm not sure if the OS will randomly return more cmsgs or not and didn't want the application to panic.By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.