Failed to start App due to error "Client network socket disconnected before secure TLS connection was established"

paulli — Tue, 07 Jan 2025 13:44:48 GMT

I tried to set up my first Dynatrace app by following this instruction First app in 5 minutes | Dynatrace Developer but got "Client network socket disconnected before secure TLS connection was established" when starting the App.

$Env:NODE_TLS_REJECT_UNAUTHORIZED='0'; & npm run start

> edi-platform-web-app@0.0.0 start
> dt-app dev

(node:10800) Warning: Setting the NODE_TLS_REJECT_UNAUTHORIZED environment variable to '0' makes TLS connections and HTTPS requests insecure by disabling certificate verification.
(Use `node --trace-warnings ...` to show where the warning was created)
DT-APP: Authenticate with Dynatrace SSO

Warning ──────────────────────────────────────────────────────────────────────────────────

Failed to retrieve user details. App functions will use placeholder data.

──────────────────────────────────────────────────────────────────────────────────────────

DT-APP: Started local development server
Initial ui build finished successfully.
× Authenticating...
FetchError: request to https://sso.dynatrace.com/oauth2/authorize?client_id=dt0s08.dt-app-local&redirect_uri=http%3A%2F%2Flocalhost%3A5343%2Fauth%2Flogin&state=b31f8c232b69af33d8e10026084d61d&response_type=code&code_challenge_method=S256&code_challenge=rI0ZrHcC0gug&scope=app-engine%3Aapps%3Arun%20storage%3Alogs%3Aread%20storage%3Abuckets%3Aread failed, reason: Client network socket disconnected before secure TLS connection was established

Re: Failed to start App due to error "Client network socket disconnected before secure TLS connection was established"

haris — Thu, 10 Jul 2025 08:04:58 GMT

Hi Paulli,

Apologies for the very late reply. This question seems to have been missed by us, or it was not in the proper place, and we noticed it only now.

this seems like common connection reset error caused by network issues or the server-side closes the connection prematurely either due to too many connection attempts or other reasons.

Could you please tell me if you're still having the issue so that we can actively look into it now?

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Failed to start App due to error "Client network socket disconnected before secure TLS connection was established"

Re: Failed to start App due to error "Client network socket disconnected before secure TLS connection was established"