Heroku Node.js WebSocket Server

Question

The Heroku Dev Center article Using WebSockets on Heroku with Node.js explains how to deploy the Node.js Websocket Test demo application, which uses Express.

However, I'm deploying a Node.js WebSocket chat server that doesn't use Express.

When I try to connect from Terminal with wscat -c ws://my-app.herokuapp.com/1, I get error: Error: unexpected server response (503). And, heroku logs returns code=H14 desc="No web processes running".

Why? How do I fix this?

Note: My Procfile is correct: web: node server.js.

Community · Accepted Answer · 2017-05-23 12:10:56Z

1

Solution: Delete & recreate the app.

I changed the first line of the Node.js WebSocket chat server to:

var webSocketServer = new (require('ws')).Server({
      server: require('http').createServer(function (request, response) {
        response.end()
      }).listen(process.env.PORT || 5000)
    }),

Still didn't work.

Then, I deleted & recreated the Heroku app and deployed. Worked.

Then, I changed the first line back to:

var webSocketServer = new (require('ws')).Server({port: (process.env.PORT || 5000)}),

and redeployed. Still works!

edited May 23, 2017 at 12:10

CommunityBot

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answered Mar 5, 2014 at 19:26

ma11hew28

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Comments

Dan Kohn · Accepted Answer · 2014-03-05 19:15:53Z

0

Can you connect with curl -vD to get verbose information on what headers you server is sending?

answered Mar 5, 2014 at 19:15

Dan Kohn

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