Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch

My bot often crashes for the following error:

Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch
Stopping process with SIGKILL
State changed from starting to crashed
State changed from crashed to starting
Process exited with status 137

Is it a bug within node-slack-client or some settings with heroku that I’m missing? According to this StackOverflow thread, you can fix it by telling your app to listen to a port that Heroku assign dynamically app.listen(process.env.PORT). But how can you do it with slack-client?

My code is here.

[iostreamer-X]

Had the exact issue with my bot on heroku. I just added a server that heroku could bind to and it worked perfectly.

http = require 'http'
handle = (req, res) -> res.end "hit"

server = http.createServer handle

server.listen process.env.PORT || 5000

[khanh-nguyen]

I got it working. Turn out it must be an app.