Cypress can't access different ports on same domain

[mankinchi]

Current behavior:

What I have is 2 tests (initially 1) looks like this

Application port (1):

Authentication port (2) (previously is going straight to the website and fill it in, but I switch to use cy.request instead):

Additional code:

So if I put (1) before (2), this error shows up:

CypressError: cy.request() failed trying to load:

http://localhost:8888/login

We attempted to make an http request to this URL but the request failed without a response.

We received this error at the network level:

  > Error: connect ECONNREFUSED 127.0.0.1:8888

-----------------------------------------------------------

The request we sent was:

Method: POST
URL: http://localhost:8888/login

-----------------------------------------------------------

Common situations why this would fail:
  - you don't have internet access
  - you forgot to run / boot your web server
  - your web server isn't accessible
  - you have weird network configuration settings on your computer

The stack trace for this error is:

RequestError: Error: connect ECONNREFUSED 127.0.0.1:8888
    at new RequestError (/Users/tringuyen/Library/Caches/Cypress/4.0.1/Cypress.app/Contents/Resources/app/packages/server/node_modules/request-promise-core/lib/errors.js:14:15)
    at Request.plumbing.callback (/Users/tringuyen/Library/Caches/Cypress/4.0.1/Cypress.app/Contents/Resources/app/packages/server/node_modules/request-promise-core/lib/plumbing.js:87:29)
    at Request.RP$callback [as _callback] (/Users/tringuyen/Library/Caches/Cypress/4.0.1/Cypress.app/Contents/Resources/app/packages/server/node_modules/request-promise-core/lib/plumbing.js:46:31)
    at self.callback (/Users/tringuyen/Library/Caches/Cypress/4.0.1/Cypress.app/Contents/Resources/app/packages/server/node_modules/request/request.js:185:22)
    at Request.emit (events.js:203:13)
    at Request.onRequestError (/Users/tringuyen/Library/Caches/Cypress/4.0.1/Cypress.app/Contents/Resources/app/packages/server/node_modules/request/request.js:877:8)
    at ClientRequest.emit (events.js:208:15)
    at Socket.socketErrorListener (_http_client.js:399:9)
    at Socket.emit (events.js:203:13)
    at emitErrorNT (internal/streams/destroy.js:91:8)
    at emitErrorAndCloseNT (internal/streams/destroy.js:59:3)
    at processTicksAndRejections (internal/process/task_queues.js:77:11)

And if I put (2) before (1), this error shows up:

    CypressError: cy.visit() failed trying to load:

http://localhost:8000/

We attempted to make an http request to this URL but the request failed without a response.

We received this error at the network level:

  > Error: connect ECONNREFUSED ::1:8000

Common situations why this would fail:
  - you don't have internet access
  - you forgot to run / boot your web server
  - your web server isn't accessible
  - you have weird network configuration settings on your computer

The stack trace for this error is:

Error: connect ECONNREFUSED ::1:8000
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14)

Desired behavior:

Accessing both ports doesn't end up with error

Test code to reproduce

• Create 2 different ports using PHP (8000, 8888)
• Have cypress try to access both of them

Versions

Cypress: 4.0.2
Mac: 10.15.2

Additional

I found a similar issue here: https://stackoverflow.com/questions/60031340/cypress-login-command-with-cy-request-causes-subsequent-cy-visit-to-fail

[jennifer-shehane]

I'm not able to recreate this. I have 2 local servers running and there are no errors accessing them. I even added the extra config options although I think it's unnecessary. Tried cypress run and cypress open.

Can you access the domain normally, via curl within your environment? What is the result of running curl yourdomain.com? Can you access the domain via a normal Node http.request within the environment? Knowing the results of these will help narrow down if this is a network issue inside or outside of Cypress.

---

Code I ran:

it('visit', () => {
  cy.visit('http://localhost:2222', {
    failOnStatusCode: false
  }) 
})

it('request', () => {
  cy.request({
    method: 'POST',
    url: 'http://localhost:8080',
    form: true,
    followRedirect: false,
    body: {
      username: '',
      password: ''
    }
  })
})

[mankinchi]

hi @jennifer-shehane , thanks for your reply.

1. I'm not using Node to build this application so I can't try http.request
2. This is the result of curl localhost:8000

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8" />
        <meta http-equiv="refresh" content="0;url='../login?returnURL=%2F'" />

        <title>Redirecting to ../login?returnURL=%2F</title>
    </head>
    <body>
        Redirecting to <a href="../login?returnURL=%2F">../login?returnURL=%2F</a>.
    </body>
</html>%    

And this is of curl localhost:8888

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8" />
        <meta http-equiv="refresh" content="0;url='/login?returnURL=%2F'" />

        <title>Redirecting to /login?returnURL=%2F</title>
    </head>
    <body>
        Redirecting to <a href="/login?returnURL=%2F">/login?returnURL=%2F</a>.
    </body>
</html>%                                                                                                                     

They might look similar but they are different.

3. When I run the test, I have tried to open a new tab in the browser controlled by Cypress and put the url in. It resulted in the same error. Doing this with my normal Chrome browser yield no error

[Sumedh-k]

Do you see anything different in the server logs when Cypress is running the tests?

also try http://127.0.0.1:8888

[mankinchi]

@Sumedh-k the request never reaches my server :( so nothing is shown on the error server. 127.0.0.1:8888 actually works, but since 127.0.0.1 and localhost are being treated as 2 separated domain, cookies are not being set correctly

[jennifer-shehane]

@mankinchi Are you behind a corporate proxy? Do you have any proxy configuration set up? https://on.cypress.io/proxy-configuration

[mankinchi]

@jennifer-shehane I am not using any proxy nor connecting to any proxy in my company

[mankinchi]

Is there any update on this?

[jennifer-shehane]

Since this issue hasn't had activity in a while, we'll close the issue until we can confirm this is still happening. Please comment if there is new information to provide concerning the original issue and we'd be happy to reopen.

[VenatusSimpleX]

Hi, I can confirm that it still doesn't work...

Port 8080 is running, viewable in normal browser/postman:

Not viewable in cypress browser (chrome):

Says that connection refused, even though it can be accessed elsewhere that isn't cypress:

For context, the frontend and backend are two different projects, hence the 8000 and 8080.

[Sergiobop]

Happens to me too

It there any workaround?

I have an angular app, and a laravel backend (localhost:4200 and localhost:8000)
When i try to run the e2e, the backend is not accessible as @VenatusSimpleX said

@jennifer-shehane

[lmiller1990]

I am trying to help another use debug it here: #26154 (comment). I couldn't make a minimal reproduction, but the user there suggested a work around when they encountered this issue. I wonder if it's windows specific?

[josephkabba]

I am using fedora 35 and am also have the same issue

[lmiller1990]

Take a look at #26154 @josephkabba. Can you provide a minimal reproduction? You could share it there.

[josephkabba]

Thanks @lmiller1990 #26154 helped solve the issue