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fix LAN discovery: instance-based self-filter and multicast port reuse

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Replace IP-based self-announcement filtering with a per-process instance
ID (pid ^ timestamp) so multiple instances on the same host can discover
each other. Enable SO_REUSEPORT for multicast socket binding on Unix.
Add multicast address validation on configured group.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Razvan Dimescu
2026-03-22 00:20:33 +02:00
parent 9041ccc2e1
commit 6fdadd637c
2 changed files with 22 additions and 7 deletions
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Cargo.toml
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@@ -22,7 +22,7 @@ hyper = { version = "1", features = ["client", "http1", "server"] }
hyper-util = { version = "0.1", features = ["client-legacy", "http1", "tokio"] }
http-body-util = "0.1"
futures = "0.3"
socket2 = "0.5"
socket2 = { version = "0.5", features = ["all"] }
rcgen = { version = "0.13", features = ["pem", "x509-parser"] }
time = "0.3"
rustls = "0.23"