Heroku-Web 进程未能在启动后 90 秒内绑定到 $PORT。 TooTallNate Websockets

Question

I'm using a tootallnate websockets server listening for connections from a website.

When my website tries to connect at

wss://Heroku-Name-39329.herokuapp.com/

or

wss://Heroku-Name-39329.herokuapp.com:5000/

My heroku logs output.

at=error code=H10 desc="App crashed" method=GET path="/" host=wss://Heroku-Name-39329.herokuapp.com request_id=4afca002-2078-439c-85dc-ad6ef7db50d2 fwd="207.244.77.23" dyno= connect= service= status=503 bytes=

And then(Still Heroku Logs)

Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 90 seconds of launch
Stopping process with SIGKILL
Process exited with status 137
State changed from starting to crashed
State changed from crashed to starting
Starting process with command `java $JAVA_OPTS -cp target/classes/:target/dependency/* v1.a1.server

My javascript logs

WebSocket connection to 'wss://Heroku-Name-39329.herokuapp.com/:5000/' failed: Establishing a tunnel via proxy server failed.

My Apps set within the server are.

String host = "";
int port = 5000;

My Procfile

web: java $JAVA_OPTS -cp target/classes/:target/dependency/* v1.a1.server

Answer 1

Heroku wants you to use a certain port.

Add this to your Procfile to get that port:

-Dserver.port=$PORT

So yours would look like this: Procfile

web: java $JAVA_OPTS -Dserver.port=$PORT -cp target/classes/:target/dependency

Answer 2

Try using this:

String host = "0.0.0.0";
int port = System.getenv("PORT");

On Heroku, you must bind to 0.0.0.0 and use the port assigned to your app, which is contained in the $PORT environment variable.

From the client, you will not need to specify a port, so only wss://Heroku-Name-39329.herokuapp.com/ should be used (not the one with 5000).

Answer 3

Heroku has its own env variable for its port number. use this in the server.js file.

// included process.env PORT variable for herokus specific port needed to deploy
const PORT = process.env.PORT || 8000;

so if not using PORT it will use 8000. heroku will use the PORT variable. full file example:

const express = require('express');
const app = express();
const router = express.Router();

app.use(express.static('public'));
router.get('*',function(req, res) {
  res.sendFile(path.join(__dirname, './public/index'));
});

included process.env PORT variable for herokus specific port needed to deploy
    const PORT = process.env.PORT || 8000;
    app.listen(PORT, function(err) {
      if (err) {
        console.log(err);
        return;
      }
      console.log('listening on port 8000');
    });

Answer 4

Into application.properties add:

server.port=${PORT:8080}

then into Procfile:

web: java $JAVA_OPTS -jar target/MyApp-0.0.1-SNAPSHOT.jar -Dserver.port=$PORT $JAR_OPTS

This should be enought.

Answer 5

I might be late to the party but this helped me solve this problem, change the application-prod.yml and bootstrap-prod.yml to reflect the heroku registry location and add -Dserver.port=$PORT to the Proc file after the $JAVA_OPTS , then relaunch! :)