No way to quit a BLOCKed connection?

[PaulHamdinger]

Am I right in understanding that there is no way to disconnect a client while that client is blocking? I have a script where I keep an XREAD open indefinitely with BLOCK 0, but when it's time to exit my script I can't call quit() (it never completes) or disconnect() ("DisconnectsClientError").

...
redis_client.sendCommand( [ `XREAD`, `BLOCK`, `0`, `STREAMS`, `foo:bar`, `$` ] );
await redis_client.quit(); // Queue'd forever? Never run.
await redis_client.disconnect(); // Error : DisconnectsClientError: Disconnects client at Commander.disconnect...
...

[leibale]

Redis (the server) processes commands in order, so QUIT will wait for XREAD BLOCK to finish before processing the QUIT command.
Regarding disconnect - that should work, but it'll make the sendCommand promise throw DisconnectsClientError which you'll need to catch.

client.sendCommand([`XREAD`, `BLOCK`, `0`, `STREAMS`, `foo:bar`, `$` ])
  .then(result => {
    // this will be called if/when the command is process successfully
  })
  .catch(err => {
    // this will be called if/when the command did not process successfully for any reason, including calling `disconnect` before the command is finished
  });

await client.disconnect(); // will cause any running commands to throw/be rejected with `DisconnectsClientError`

[PaulHamdinger]

Thanks for the help, that works.