WebSocket Router: idleTimeoutMs

idleTimeoutMs is the maximum time a WebSocket tunnel may have no payload traffic in either direction.

• Type: Positive integer, in milliseconds
• Default: 3600000 (one hour)
• Disabled by: blank, null, or 0

idleTimeoutMs: 300000

The activity timestamp starts when the upstream connection is established and is refreshed by non-empty traffic from either client or upstream. When the elapsed idle time exceeds the limit, the gateway terminates the tunnel with a timeout error.

This property also helps determine the underlying tunnel I/O timeout. When maxConnectionDurationMs is configured too, the gateway uses the smaller of the two values for I/O timeout scheduling, while enforcing both semantics independently.