EADDRINUSE connect EADDRINUSE 127.0.0.1:<port number> error seen when executing protractor scripts

[eymemathew]

Node version - 4.4.2
Jasmine version - 2.4.1
Protractor version - 3.1.1
OS - Windows Server 2012 R2, 64-bit

When we try to run our protractor tests that use Jasmine, we see an error - EADDRINUSE being thrown after a couple of it blocks are executed. This same test works fine on our laptops (Win7 64bit). Can you advise on why this error is thrown?

The error thrown: EADDRINUSE connect EADDRINUSE 127.0.0.1:

It throws a random port number each time and we have verified that this port is not being used by any other processes at that time.

[gibfahn]

Can you reproduce it when just running a single test?

[eymemathew]

Yes we can consistently reproduce it even with a single script. We tried rebooting the machine to ensure no ports are in use and then ran the test and the issue was seen. The same script doesn't produce that error when run on the laptop but does it when run on the Server or VM environment.

[gibfahn]

Originally raised in nodejs/node#10645

[gibfahn]

Can you post a link to the test script?

[eymemathew]

Here is a snippet of the code: It fails right after Test is entered in the last it block:

require( __dirname + '/../../PageObjects/all-page-objects.po.js' );

describe( 'Test Case: cols-create-edit', function() {
      // Variable(s)
    var countBeforeDeleteFromPersonal, countBeforeDeleteFromClient;

    describe( 'Test Step ID: 123', function() {

        it( 'Should launch the application with "default_doc_OLD" document', function() {
            MainPage.goToURL( '#/doc/Client:default_doc_OLD/report/report0' );

            // Check if application is launched
            browser.getTitle().then( function( title ) {
                expect( title === 'Weights [Client:default_doc_OLD]' )
                    .customError( 'Title of browser did not match. ' +
                        'Expected: "Weights [Client:default_doc_OLD]", Found: "' +title+ '"' );
                if ( title !== 'Weights [Client:default_doc_OLD]' ) {
                    CommonFunctions.takeScreenShot();
                }
            } );
        } );

        it( 'Should click on the "Wrench" button on the application toolbar', function() {
            MainPage.getWrenchIcon().click().then( function() {}, function( err ) {
                expect( false ).customError( err );
                CommonFunctions.takeScreenShot();
            } );

            // Verifying if drop down menu appear.
            MainPage.getWrenchIcon( true ).isPresent().then( function( option ) {
                if ( !option ) {
                    expect( false ).customError( 'Wrench icon dropdown is not present.' );
                    CommonFunctions.takeScreenShot();
                }
            } );
        } );

        it( 'Should select "Automatic Calculation" option', function() {
            // Verifying if "Automatic Calculation" option is selected.
            MainPage.setAutomaticCalculation( true ).then( function( option ) {
                if ( !option ) {
                    expect( false ).customError( '"Automatic Calculation" is not selected.' );
                }
            } );
        } );

        it( 'Enter "Test" in the "Portfolio" widget and select ' +
            '"CLIENT:/PA3/TEST.ACCT" from type ahead', function() {
            MainPage.setPortfolio( 'Test', 'Client:/TEST.ACCT', 'Client:/TEST.ACCT' ).then( function( option ) {
                if ( !option ) {
                    expect( false ).customError( '"CLIENT:/TEST.ACCT" is not selected from type ahead.' );
                    CommonFunctions.takeScreenShot();
                }
            } );
        } );
....
....
....

    } );

} );

The function SetPortfolio has:

MainPage.prototype.setPortfolio = function( portfolioTicker, optionToSelect, expectedPortfolioFullName,
                                              selectFromTypeAheadDirectly, selectFromTypeAheadUsingKeyboardArrows ) {
    var defer = protractor.promise.defer();
    var promise = defer.promise;
    var xpathPortfolioLookupWidget = '//id-widget[@id="portfolio-textbox"]';
    var xpathPortfolioInputBox = xpathPortfolioLookupWidget + '//input';
    var xpathTypeaheadContainer = '//filter-listbox-container';
    var portfolioInputBox = element( by.xpath( xpathPortfolioInputBox ) );

    // Initializing the optional variables
    if ( selectFromTypeAheadDirectly === undefined ) {
        selectFromTypeAheadDirectly = true;
    }

    if ( selectFromTypeAheadUsingKeyboardArrows === undefined ) {
        selectFromTypeAheadUsingKeyboardArrows = false;
    }

    // Click into "portfolio" widget
    portfolioInputBox.click();

    // Clear the default portfolio selected (if exists)
    portfolioInputBox.clear();

    // Enter the text into the Portfolio Input Box
    portfolioInputBox.sendKeys( portfolioTicker );

    // Wait for the type ahead box to appear
    var xpathTypeAhead = xpathPortfolioLookupWidget + xpathTypeaheadContainer;
    Utilities.waitUntilElementAppears( element( by.xpath( xpathTypeAhead ) ), 6000 );

    // Select the option from the type ahead list if selectFromTypeAheadDirectly == true
    if ( selectFromTypeAheadDirectly ) {
        // Check if type ahead appeared, if yes, select the required option
        var typeAhead = element( by.xpath( xpathTypeAhead ) );
        typeAhead.isPresent().then( function( listFound ) {
            if ( !listFound ) {
                defer.reject( 'Type ahead did not appear after typing into the Portfolio widget.' );
            } else {
                // Find the required option in the type ahead list
                var xpathOption = xpathTypeAhead + '//*[@data-qa-class="pa-typeahead-item" ' +
                    'and @data-value="'+optionToSelect+'"] | ' + xpathTypeAhead + '//*[@data-qa-class="pa-typeahead-item" ' +
                        'and descendant::*//*[normalize-space(.)="' +optionToSelect+ '"]]';
                var refOption = element( by.xpath( xpathOption ) );
                Utilities.scrollElementToVisibility( refOption );
                refOption.isPresent().then( function( optionFound ) {
                    // If required option is not found reject the promise
                    if ( !optionFound ) {
                        defer.reject( '"' +optionToSelect+ '" Portfolio is not found in the type ahead.' );
                    } else {
                        // Select the required option
                        refOption.click();

                        // Check if required portfolio is selected
                        portfolioInputBox.getAttribute( 'value' ).then( function( portfolioValue ) {
                            if ( portfolioValue.toLowerCase() !== expectedPortfolioFullName.toLowerCase() ) {
                                defer.reject( '"' +expectedPortfolioFullName+ '" portfolio is not found in the Portfolio widget ' +
                                    'on selecting "' +optionToSelect+ '" from type ahead.' );
                            } else {
                                defer.fulfill( true );
                            }
                        } );
                    }
                } );
            }
        } );
    } else {
        defer.fulfill( true );
    }

    return promise;
};

[bnoordhuis]

I fixed the formatting in your comment, the source code was getting mangled. The EADDRINUSE error implies you are trying to bind to the same address twice. Scan your code base and dependencies for net.connect or net.createConnection calls (or their tls counterparts) that pass in localAddress or localPort options.

[eymemathew]

I scanned through all the dependency files and I could find matches for both the calls mentioned in protractor related files.
Net.CreateConnection.xlsx
Net.Connect.xlsx

Can you suggest what could be done to get around it?

[eymemathew]

And is there a reason why this same test case would work on one environment(laptop) and not on the other(Win Server)

[bnoordhuis]

Did you check that there aren't already processes running that are bound to that port?

[eymemathew]

Yes we ensured nothing is using the port and also tried rebooting the machine and tracked the tcpview. The port was being used only by the process used by the script while it ran.

[eymemathew]

@bnoordhuis did you have a chance to check the files I attached related to the calls for the methods you mentioned? Can you please help here.

[MylesBorins]

@eymemathew people are not very likely to open a .xlsx file. Could you put your output into a gist or similar online service?

[eymemathew]

Hi please find the scan results for Net.CreateConnect and Net.Connect calls and they all seem to be from the protractor related files

[eymemathew]

@MylesBorins @bnoordhuis Do the links above work? Can you please help with this?

[eymemathew]

@MylesBorins just curious, have you had a chance to look into it as this is affecting all our team members. Sorry for the trouble..