'EADDRINUSE' when debugging, despite no other processes using 5858

[spamguy]

I'm pretty new to the Protractor debugging scene, so kindly bear with me. Running OSX 10.10, Node 0.12.0, and Protractor 2.0.0 installed locally via grunt-protractor-runner. The compy's firewall is off.

I have a test that fails to work as expected. My intention, then, was to throw in a browser.debugger() and then run protractor in debug mode.

I did a quick check to make sure nothing was running on port 5858:

$ netstat -ant | grep 5858
$

Then I started Protractor and immediately got an EADDRINUSE error:

$ ./node_modules/grunt-protractor-runner/node_modules/protractor/bin/protractor debug protractor-local.conf.js 
Starting selenium standalone server...
[launcher] Running 1 instances of WebDriver
Starting debugger agent.
Debugger listening on port 5858
< Error: listen EADDRINUSE
<     at exports._errnoException (util.js:746:11)
<     at Agent.Server._listen2 (net.js:1129:14)
<     at listen (net.js:1155:10)
<     at Agent.Server.listen (net.js:1240:5)
<     at Object.start (_debugger_agent.js:20:9)
<     at startup (node.js:86:9)
<     at node.js:814:3
connecting to port 5858... ok

I exited and tried the first command, only to find still nothing is running on 5858. It's as if it's blocking itself.

[juliemr]

Confirmed that this is specific to node 0.12. (Quick fix, downgrade to 0.10 if you can).

[adamduren]

I am experiencing this issue as well.

[toutpt]

Same here using :

• node 0.12.3
• protractor 2.0.0

[rightisleft]

+1
protractor v 2.1.0

[JLLeitschuh]

Still experiencing this problem. I'm trying to debug a grunt script that runs at the end of protractor tests. Any workarounds for this?

• Node v0.12.4
• grunt-cli v0.1.13
• grunt v0.4.5
• protractor v2.1.0
• grunt-protractor-runner v2.0.0

I also tried launching the debugger on a different port to make sure that there weren't any conflicts and still had this problem.

[david-gang]

same problem here. @juliemr - What is the source of the problem? Is this a bug in nodejs? I am already in nodejs 0.12 and cannot downgrade.

I think it is connected to nodejs/node#1282 . I have no idea when this is/was released. It looks like a node 1.x branch. This is interesting, as we have now just 0.12. If this is connected, it should be solved in a future node upgrade.

[david-gang]

Update:

I updated to nodejs 0.12.7 and saw if the error consists.

Here it is quite different:
When i use the debug option i get the debugger console. I have to press c to start the protractor tests. When i get to browser pause the system fails. This is because of the onportavailable function in protractor.js

var onPortAvailable = function(port, fn) {
    console.log("ports is "+ port);
    var net = require('net');
    var tester = net.connect({port: port}, function() {
      console.error('Port ' + port + ' is already in use. Please specify ' +
        'another port to debug.');
      process.exit(1);
    });
    tester.once('error', function (err) {
      if (err.code === 'ECONNREFUSED') {
        tester.once('close', fn).end();
      } else {
        console.error('Unexpected failure testing for port ' + port + ': ',
          err);
        process.exit(1);
      }
    });

We are already in the debugger and it tries to connect again to the same port.

If i don't specify the browser.pause line, i get

Error: read ECONNRESET
at exports._errnoException (util.js:746:11)
at TCP.onread (net.js:559:26)

Now comes my most intersting observation :-)

When i don't pass the debug option, suddenly everything works and i get into the wd-debug console with browser.pause Maybe this was intended to work as standalone without supplying the debug option :-)

[javiercr]

Same problem with node 4.1.2 and protractor 2.5.1.

[melnikaite]

The same error running express via nodemon --debug ./bin/www
node v4.2.1
node-inspector v0.12.3
nodemon v1.7.1
express v4.13.3

[juliemr]

Possibly related to #2206? Also assigning to @hankduan