node.js - Error: IPC channel is already disconnected -


where/when should catch error?

error: ipc channel disconnected

this called child_process (using cluster) module when call .disconect() multiple times. know shouldn't call twice (or more), don't have control on this. how prevent calling multiple times? code doesn't works:

try {   if (worker.state !== "disconnected" && worker.state !== "dead") {     worker.disconnect();   } } catch (error) {}

edit:

this stack trace of error:

events.js:71     throw arguments[1]; // unhandled 'error' event                    ^ error: ipc channel disconnected     @ process.target.disconnect (child_process.js:392:26)     @ progresstracker.callback (cluster.js:437:20)     @ progresstracker.check (cluster.js:94:32)     @ object.worker.disconnect [as 44:2] (cluster.js:445:16)     @ handleresponse (cluster.js:149:41)     @ respond (cluster.js:170:5)     @ handlemessage (cluster.js:180:5)     @ process.eventemitter.emit (events.js:126:20)     @ handlemessage (child_process.js:269:12)     @ pipe.channel.onread (child_process.js:293:9)

you should use worker.suicide prevent calling .disconnect() multiple times:

if (!cluster.worker.suicide) {     cluster.worker.disconnect(); }

http://nodejs.org/api/cluster.html#cluster_worker_suicide

set calling .kill() or .disconnect(), until undefined.


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