ODIS Signer 3.0.1
This patch release fixes an issue we saw shortly after releasing v3.0.0 where the Signer incorrectly treats a closed socket from the Combiner as a timeout and attempts to respond with a 500 status code. When the Combiner receives enough responses from Signers to respond to the user, it will abort outstanding requests with an AbortSignal. In v3.0.0, the Signer timeout logic was upgraded to listen for 'abort' events and treat them as timeouts. Because the Signer was unable to distinguish between 'abort' events caused by timeouts and ones caused by the Combiner, it appeared to be timing out and returning 500s frequently.
In this release, we've changed back the Signer's timeout logic to rely on setTimeout and added a new connectionClosedHandler to catch closed socket events