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Send the client keepalive every 5 seconds #80

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Merged
ehoeve786 merged 1 commit into from
Oct 31, 2026
Merged

Send the client keepalive every 5 seconds #80

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8 changes: 5 additions & 3 deletions core/ssh/src/main/kotlin/com/secrm/core/ssh/SshClientManager.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -294,9 +294,11 @@ class SshClientManager {
})
})
if (cfg.auth is SshAuth.Password) s.setPassword((cfg.auth as SshAuth.Password).password)
// Probes the link every 15 s; three missed replies end the session, so a drop is noticed.
s.setServerAliveInterval(15_000)
s.setServerAliveCountMax(3)
// Probes the link every 5 s; six missed replies (30 s) end the session, so a drop is noticed. Under 10 s so a
// server with ClientAliveInterval 10 (the C3X) always sees traffic and never sends its own probe: the
// shell sessions there ended exactly when that first probe was due.
s.setServerAliveInterval(5_000)
s.setServerAliveCountMax(6)

try { s.connect(if (cfg.via != null) maxOf(cfg.connectTimeoutMs, 30_000) else cfg.connectTimeoutMs) } catch (t: Throwable) {
val presented = s.hostKey?.key
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