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fix(mcp): harden notification system against race conditions #3168

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Merged
waleedlatif1 merged 8 commits into from
Feb 10, 2026
Merged

fix(mcp): harden notification system against race conditions #3168

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cf25fb0
fix(mcp): harden notification system against race conditions
waleedlatif1 Feb 8, 2026
7c6927d
updated tests
waleedlatif1 Feb 9, 2026
f844e25
plugged in new mcp event based system and create sse route to publish…
waleedlatif1 Feb 9, 2026
ec69103
ack commetns
waleedlatif1 Feb 9, 2026
3de6e3b
fix reconnect timer
waleedlatif1 Feb 9, 2026
4d53e35
cleanup when running onClose
waleedlatif1 Feb 9, 2026
0ba38ce
fixed spacing on mcp settings tab
waleedlatif1 Feb 9, 2026
44ebc51
keep error listeners before quiet in redis
waleedlatif1 Feb 10, 2026
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cleanup when running onClose
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@waleedlatif1
waleedlatif1 committed Feb 9, 2026
commit 4d53e3543916ab333873cb8d62e3b4bc678bf661
7 changes: 6 additions & 1 deletion apps/sim/lib/mcp/client.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -281,9 +281,14 @@ export class McpClient {
/**
* Register a callback to be invoked when the underlying transport closes.
* Used by the connection manager for reconnection logic.
* Chains with the SDK's internal onclose handler so it still performs its cleanup.
*/
onClose(callback: () => void): void {
this.transport.onclose = callback
const existingHandler = this.transport.onclose
this.transport.onclose = () => {
existingHandler?.()
callback()
}
}

/**
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