net: ListenMulticastUDP doesn't work on Solaris #20898
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mikioh
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Basically #7399 is unrelated even though the functionality is required for testing. The reason why ListenMulticatsUDP doesn't work (and the external networking library does work well for IP multicasting) is because the solaris port maintainers didn't enable the function when they made the solaris port available. Simply tweaking build constraint lines in the net and internal/poll packages of the standard library could enable the function on Solaris. |
mikioh
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CL https://golang.org/cl/47450 mentions this issue. |
bradfitz
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Please answer these questions before submitting your issue. Thanks!
What version of Go are you using (
go version)?1.8.3
What operating system and processor architecture are you using (
go env)?linux/amd64 and darwin/amd64 building for solaris/amd64
What did you do?
Trying to set up a multicast UDP listen using
net.ListenMulticastUDPOn Linux, this runs great, but on Solaris it returns
listen udp 239.255.255.250:1900: option not supported by protocolThis is an example of the method that doesn't work: https://gist.github.com/iamacarpet/d0ea5c28f1753c7b624b79b9f5d6504d#file-listen_default-go
And this is an example that does work (using golang.org/x/net/ipv4): https://gist.github.com/iamacarpet/d0ea5c28f1753c7b624b79b9f5d6504d#file-listen_ipv4-go
I wasn't sure if this related to #7399, but then I'd expect it to not work at all, rather than having one method that works and one that is broken.
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