Cypress running on HTTP protocol but Chrome tries to redirect to HTTPS (HSTS issue?)

[techieshark]

Current behavior:

yarn cypress open

Opens Cypress, and I can run a test initially 👍.
But if I close the cypress browser, then restart, Chrome tries to redirect to HTTPS protocol (rather than HTTP where cypress is running).

(In text:)

This site can’t be reached localhost unexpectedly closed the connection.
Try:
Checking the connection
Checking the proxy and the firewall
ERR_CONNECTION_CLOSED

Logs show HTTP 200 codes, then later HTTP 500 error codes:

GET /__/ 200 32.948 ms - -
GET /__cypress/runner/cypress_runner.css 200 47.385 ms - -
GET /__cypress/runner/cypress_runner.js 200 407.653 ms - -
GET /__cypress/iframes/integration/test_widget.js 200 14.653 ms - 729
GET /__cypress/tests?p=cypress/integration/test_widget.js-978 200 1284.204 ms - -
GET /__cypress/tests?p=cypress/support/index.js-661 200 1523.106 ms - -
GET /__/ 200 3.119 ms - -
GET /__cypress/runner/cypress_runner.css 200 44.226 ms - -
GET /__cypress/runner/cypress_runner.js 200 312.244 ms - -
GET /__cypress/iframes/integration/test_widget.js 200 3.701 ms - 729
GET /__cypress/tests?p=cypress/support/index.js-502 200 3.365 ms - -
GET /__cypress/tests?p=cypress/integration/test_widget.js-868 200 3.386 ms - -
GET / 200 5.387 ms - -
GET /static/js/bundle.js 200 46.019 ms - -
GET /static/js/main.chunk.js 200 71.848 ms - -
GET /static/js/0.chunk.js 200 404.729 ms - -
GET /sockjs-node/info?t=1545897520428 200 6.486 ms - -
HEAD / 500 40.350 ms - -
HEAD / 500 42.385 ms - -
HEAD / 500 45.004 ms - -
GET / 200 2.000 ms - -
GET /static/js/0.chunk.js 304 23.613 ms - -
GET /static/js/main.chunk.js 304 22.061 ms - -
GET /static/js/bundle.js 304 20.583 ms - -
GET /sockjs-node/info?t=1545897530884 200 8.911 ms - -
The automation client disconnected. Cannot continue running tests.
HEAD / 500 44.353 ms - -
HEAD / 500 46.006 ms - -
HEAD / 500 47.517 ms - -
^C

I tried this with both Chrome and Electron.

Behavior in Electron was similar but I actually got the error messages below half-way through my two tests (I suspect HSTS was set after first test).

Cypress errored attempting to make an http request to this url:

https://localhost:3000/

The error was:

write EPROTO 140735814595456:error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:../../vendor/node/deps/openssl/openssl/ssl/s23_clnt.c:797:

The stack trace was:

Error: write EPROTO 140735814595456:error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:../../vendor/node/deps/openssl/openssl/ssl/s23_clnt.c:797:

at exports._errnoException (util.js:1024:11)
at WriteWrap.afterWrite (net.js:851:14)

Desired behavior:

Either:
a) Chrome should always navigate to HTTP protocol / port, or
b) always HTTPS,

but not HTTP initially then HTTPS later.

I suspect that the issue is related to HSTS. Below you see that there's an HSTS entry for localhost that forces HTTPS; if I delete that (after every test) chrome no longer attempts to redirect to HTTPS.

Steps to reproduce: (app code and test code)

will be forthcoming

Versions

cypress 3.1.4
Mac OS X 10.13.5
Chrome: 71

[jennifer-shehane]

Hi, do you know if this also happens on previous versions of Cypress? Did this happen on upgrade or is this your first time running Cypress?

[techieshark]

Hi Jennifer, this was my first time running Cypress. I just tried installing 3.1.0 but no luck there either.

[jennifer-shehane]

What is your test code? What are you passing to cy.visit()? Do you use a baseUrl setting? How do you set that if so?

[techieshark]

Previously I was starting react app on port 3000 and using nginx to forward HTTPS to it. Not sure if that is related, but...

I've switched to using PORT=4443 HTTPS=true react-scripts start and it seems to work now, so I'll close this issue.