opentok interconnect with node js express - node.js

Question

I am implementing opentok interconnect with nodejs express.
Getting error:
No callback given to dial, while implementing dial-out.
My use case is as per documentation.
I am able to get all required values like config, sessionId, token, auth. , but still unable to connect the call.
opentok.dial(sessionId, token, config.uri, options, {
auth: {
username: config.uname, password: config.pass }
},
function (err, sipCall) {
if (err)
return res.status(500).send('Platform error starting SIP Call:'+err);
res.send(sipCall);
});

Answer 1

It looks like you are posting too many arguments into the function before the callback.
From the github repo we can see the example:
opentok.dial(sessionId, token, sipUri, options, function (error, sipCall) {
We can see the arguments:
sessionId
token
sipUri
options
callback
You however are passing in an object between options and the callback.
opentok.dial(sessionId, token, config.uri, options,
// Extra object argument, is this meant to be options?
{
auth: {
username: config.uname, password: config.pass}
},
function (err, sipCall) {
if (err)
return res.status(500).send('Platform error starting SIP
Call:'+err);
res.send(sipCall);
});