3.3.1 - cypress often fails to load in open mode - websocket error

[lukeapage]

Current behavior:

Desired behavior:

No error

Steps to reproduce: (app code and test code)

This happens intermittently but very often on 3.3.1. If you log off and on again it is fine.

If you switch back to cypress 3.3.0, even without logging off it is fine.

Versions

3.3.1 (3.3.0 is fine)
OS: windows

Most of us use proxies, usually fiddler. When 3.3.0 was release we had to have this:

$ env | grep PROXY
HTTP_PROXY=http://127.0.0.1:8888
NO_PROXY=undefined
HTTPS_PROXY=http://127.0.0.1:8888 (edited) 

One of our devs reckons the following proxy settings in 3.3.1 fix this bug:

$ env | grep -i proxy
HTTP_PROXY=
NO_PROXY=undefined
HTTPS_PROXY=

I believe the NO_PROXY needing "undefined" was due to another bug you had in your network code.

[lukeapage]

maybe this is the same as this? #4359 (comment)

If so...

I've tried with or without the base url and same error.

CYPRESS_BASE_URL=http://localhost
CYPRESS_PORT=2222

I only use the above env variables to stop cypress having an annoying reload every time you open a spec.

[flotwig]

@lukeapage Can you share the full DEBUG logs from when you run in to this error? Here are some instructions to obtain them.

[lukeapage]

I've asked my colleague to send details to support@cypress when he's back from vacation

[flotwig]

Okay, sounds good.

If anyone else reading this is experiencing this, please share your DEBUG logs to shed some light on the issue.

[flotwig]

@lukeapage Can you to try Cypress 3.3.2? We made some bugfixes to websockets along with other network improvements and it might fix this issue.

No NO_PROXY should be necessary, though you might want to have the basic NO_PROXY=localhost just so requests for your app don't go through the proxy.

[shaharkazaz]

I got the same error not sometimes but always when working with v3.2.0 and above, I downgraded to 3.1.5 and it's working now.
Any idea where this is coming from?

[flotwig]

@shaharkazaz No idea yet. Since you can reliably get this to happen, can you share the full debug logs from when you run Cypress and experience this issue? It would help a lot to debug the cause of this and get it fixed.

[jennifer-shehane]

@shaharkazaz Any updates on sending the debug logs?

[shaharkazaz]

@flotwig @jennifer-shehane Hey, sorry I wasn't available in the last couple of days, I'll get the logs today

[shaharkazaz]

@jennifer-shehane @flotwig
These are the logs I got in the terminal (used DEBUG=cypress:* cypress open), it's a bit longer but looks like it's the same set of messages.

cypress:https-proxy received upstreamSocket callback for request { port: '50012', hostname: 'localhost', err: { Error: connect ECONNREFUSED ::1:50012 at Object._errnoException (util.js:1024:11) at _exceptionWithHostPort (util.js:1046:20) at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1182:14) code: 'ECONNREFUSED', errno: 'ECONNREFUSED', syscall: 'connect', address: '::1', port: 50012 } } +519ms
  cypress:https-proxy received error on client browserSocket { err: { Error: connect ECONNREFUSED ::1:50012 at Object._errnoException (util.js:1024:11) at _exceptionWithHostPort (util.js:1046:20) at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1182:14) code: 'ECONNREFUSED', errno: 'ECONNREFUSED', syscall: 'connect', address: '::1', port: 50012 }, url: 'localhost:50012' } +1ms
  cypress:server:server Got CONNECT request from localhost:4200 +3s
  cypress:https-proxy Writing browserSocket connection headers { url: 'localhost:4200', headLength: 0, headers: { host: 'localhost:4200', 'proxy-connection': 'keep-alive', 'user-agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36' } } +3s
  cypress:https-proxy Got first head bytes { url: 'localhost:4200', head: 'GET /__socket.io/?EIO=3&transport=websocket HTTP/1.1\r\nHost: loca' } +2ms
  cypress:server:cors Parsed URL { port: '4200', tld: 'localhost', domain: '' } +3s
  cypress:server:server HTTPS request does match URL: https://localhost:4200 with props: { port: '4200', tld: 'localhost', domain: '' } +2ms
  cypress:https-proxy Not making direct connection { url: 'localhost:4200' } +0ms
  cypress:https-proxy Making intercepted connection to 50012 +0ms
  cypress:https-proxy getting proxy URL { port: 50012, serverPort: 50012, sniPort: 50014, url: 'https://localhost:50012' } +0ms
  cypress:network:connect received error on connect, retrying { iteration: 0, delay: 0, err: { Error: connect ECONNREFUSED ::1:50012 at Object._errnoException (util.js:1024:11) at _exceptionWithHostPort (util.js:1046:20) at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1182:14) code: 'ECONNREFUSED', errno: 'ECONNREFUSED', syscall: 'connect', address: '::1', port: 50012 } } +3s
  cypress:network:connect received error on connect, retrying { iteration: 1, delay: 100, err: { Error: connect ECONNREFUSED ::1:50012 at Object._errnoException (util.js:1024:11) at _exceptionWithHostPort (util.js:1046:20) at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1182:14) code: 'ECONNREFUSED', errno: 'ECONNREFUSED', syscall: 'connect', address: '::1', port: 50012 } } +4ms
  cypress:network:connect received error on connect, retrying { iteration: 2, delay: 200, err: { Error: connect ECONNREFUSED ::1:50012 at Object._errnoException (util.js:1024:11) at _exceptionWithHostPort (util.js:1046:20) at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1182:14) code: 'ECONNREFUSED', errno: 'ECONNREFUSED', syscall: 'connect', address: '::1', port: 50012 } } +107ms
  cypress:network:connect received error on connect, retrying { iteration: 3, delay: 200, err: { Error: connect ECONNREFUSED ::1:50012 at Object._errnoException (util.js:1024:11) at _exceptionWithHostPort (util.js:1046:20) at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1182:14) code: 'ECONNREFUSED', errno: 'ECONNREFUSED', syscall: 'connect', address: '::1', port: 50012 } } +204ms
  cypress:network:connect retries exhausted, bubbling up error { iteration: 4, err: { Error: connect ECONNREFUSED ::1:50012 at Object._errnoException (util.js:1024:11) at _exceptionWithHostPort (util.js:1046:20) at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1182:14) code: 'ECONNREFUSED', errno: 'ECONNREFUSED', syscall: 'connect', address: '::1', port: 50012 } } +206ms
  cypress:https-proxy received upstreamSocket callback for request { port: 50012, hostname: 'localhost', err: { Error: connect ECONNREFUSED ::1:50012 at Object._errnoException (util.js:1024:11) at _exceptionWithHostPort (util.js:1046:20) at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1182:14) code: 'ECONNREFUSED', errno: 'ECONNREFUSED', syscall: 'connect', address: '::1', port: 50012 } } +524ms
  cypress:https-proxy received error on client browserSocket { err: { Error: connect ECONNREFUSED ::1:50012 at Object._errnoException (util.js:1024:11) at _exceptionWithHostPort (util.js:1046:20) at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1182:14) code: 'ECONNREFUSED', errno: 'ECONNREFUSED', syscall: 'connect', address: '::1', port: 50012 }, url: 'localhost:4200' } +0ms

[flotwig]

@shaharkazaz Thanks for providing this!

You do not have a NO_PROXY environment variable set, correct? It looks like requests for localhost are going through the proxy. echo $NO_PROXY shouldn't return anything.

Also, did you test this with 3.4.0 or another version?

If both of those answers are "yes", can you share the complete debug logs from the session? There's some startup info that is useful to have in there too.

[shaharkazaz]

@flotwig Happy to help 🙂
I don't have a NO_PROXY environment variable set ( I verified with the echo command).
I tried upgrading to v3.4.0 but I still get the same issue 😞

Is there a way for the logs to be written to a file? there is too much output in these logs

[flotwig]

For sure, you can use shell redirection:

DEBUG=cypress:* cypress open > log-file.txt 2>&1

[shaharkazaz]

Ya I figured using shell redirection would probably be the answer 😁
cypress-3.4.0-logs.txt

[shaharkazaz]

@flotwig did the logs help? any idea what's going on?

[ferparmur]

I have the same issue. Tried 3.1.5 and 3.4.0 on mac with Chrome and Electron.

log-file.txt

[flotwig]

Hmm, I am curious if the issue is related to launching Cypress for a project listening on port 80.

@fernando-paredes or @shaharkazaz Could you try running your server on a non-standard port? Launch your project on port 3000 for example, then run Cypress with --config baseUrl=http://localhost:3000 and see if the same issue happens.

[shaharkazaz]

@flotwig my server is running on port 4200

[flotwig]

Oh, I see that now. :P I did notice that the other two users in the thread are using port 80, so hopefully they can test it out and we can see if it's related to their issue.

Potentially related (same error): #4763

[vijesh-koroth]

Finally, it worked for me after "plugins->index.js" file is updated with the following arguments

args.push('--disable-gpu')
args.push('--disable-gpu-compositing')
args.push('--disable-gpu-rasterization')
args.push('--config baseUrl=http://localhost:3000')

[jennifer-shehane]

Closing as resolved. Please open a new issue with a reproducible example if you are encountering an issue similar to the one described in this thread.

[Amrita19900406]

@vijesh-koroth -- how do we use this in the index.js in plugins?Is this correct. not working for me
module.exports = (on, config) => {

args.push('--disable-gpu')
args.push('--disable-gpu-compositing')
args.push('--disable-gpu-rasterization')
args.push('--config baseUrl=http://localhost:3000')
// on is used to hook into various events Cypress emits
// config is the resolved Cypress config
}