peerswap can fail to start if lightningd startup is too slow

[wtogami]

2025-01-28T18:01:44.190Z INFO    plugin-peerswap: Killing plugin: exited before replying to init

peerswap can fail to start if lightningd startup is too slow.

Version: peerswap 3eadb6b

[grubles]

How long did it take to start?

[YusukeShimizu]

c-lightning has a 60-second timeout for both “getmanifest” and “init.”
https://docs.corelightning.org/docs/a-day-in-the-life-of-a-plugin#timeouts

Any plugin that fails to respond within this timeframe is forcibly terminated. It is highly likely that the peerswap plugin is exceeding this timeout during its startup process and thus terminates before responding to “init.”

The current startup process involves establishing a Unix domain socket connection with CLN, which is taking too long. Making this process asynchronous could potentially resolve the issue, but the full scope of the impact is not yet fully understood.