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From "Philip Frank (JIRA)" <j...@apache.org>
Subject [jira] [Created] (THRIFT-4437) JS WebSocket client callbacks invoked twice on parallel requests
Date Wed, 27 Dec 2017 11:09:00 GMT
Philip Frank created THRIFT-4437:
------------------------------------

             Summary: JS WebSocket client callbacks invoked twice on parallel requests
                 Key: THRIFT-4437
                 URL: https://issues.apache.org/jira/browse/THRIFT-4437
             Project: Thrift
          Issue Type: Bug
          Components: JavaScript - Library
    Affects Versions: 0.11.0
            Reporter: Philip Frank


When using a WebSocket Transport and doing two service calls immediately, without waiting
for the first to return, e.g. like this:

{code:javascript}
const t = new Thrift.TWebSocketTransport('ws://localhost:8338/hello');
	const p = new Thrift.TJSONProtocol(t);
	const client = new HelloSvcClient(p);

	t.open();

	client.test(function (res) {
		console.log(1, res);
	});
	client.test(function (res) {
		console.log(2, res);
	});
{code}

The callback to the first invocation is called twice, and the second never, i.e. console shows:

{code}
1 "test result"
1 "test result"
{code}

instead of the expected

{code}
1 "test result"
2 "test result"
{code}

I suspect this bug was introduced with the patch for https://issues.apache.org/jira/browse/THRIFT-4131
where for some reason the callback registered twice when set: https://github.com/apache/thrift/pull/1372/files



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