added multicast scouting ttl option #1032
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fuzzypixelz
suggested changes
May 22, 2024
| @@ -637,6 +647,7 @@ impl Runtime { | |||
| // Must set to nonblocking according to the doc of tokio | |||
| // https://docs.rs/tokio/latest/tokio/net/struct.UdpSocket.html#notes | |||
| socket.set_nonblocking(true)?; | |||
| socket.set_multicast_ttl_v4(multicast_ttl)?; | |||
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Here we don't join any multicast group. Isn't this a no-op?
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If I understand multicast properly, only listening for multicast packets requires joining a multicast group, but sending packets only requires sending to the correct IP address, and this is the function used in the scout function here to create the socket that send out multicast packets, so if the TTL is not set on this socket, then all the scouting messages sent will still have a TTL of 1. I tried taking this line out and saw that packet TTL was still 1.
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@jeremiah-wooten Thank you for the contribution :) Welcome to Eclipse Zenoh! |
Mallets
approved these changes
May 28, 2024
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adds the ability to change the ttl on the multicast scouting socket from the default of 1