Disable sentry-trace headers

[nCrafts]

Is there an existing issue for this?

• I have checked for existing issues https://github.com/getsentry/sentry-javascript/issues
• I have reviewed the documentation https://docs.sentry.io/
• I am using the latest SDK release https://github.com/getsentry/sentry-javascript/releases

How do you use Sentry?

Sentry Saas (sentry.io)

Which SDK are you using?

@sentry/browser

SDK Version

8.5.0

Framework Version

2.5.10

Link to Sentry event

No response

SDK Setup

Sentry.init({
  dsn: "https://xxxxx.ingest.sentry.io/xxxxx",
  enableTracing: false,
  sampleRate: 0,
  tracesSampleRate: 0,
  autoSessionTracking: false,
  tracePropagationTargets: ["example.com"],
});

Steps to Reproduce

See above code

Expected Result

Sentry should simply be processing server exceptions and logging them. No other 'features' should be enabled.

Actual Result

I am trying to use Sentry to capture server errors but I don't know how to prevent it from just taking over. It's adding sentry-trace and baggage headers to HTML pages, and there seems to be no way to disable it. Things seem opt-out when they should be opt-in.

From what I can tell the tracePropagationTargets setting should allow me to disable it, but it doesn't seem to work. I've set tracePropagationTargets to example.com but it's still sending out those headers with all requests.

I am caching my HTML pages at the edge which would probably make these headers useless anyways.

Another user brought up a similar issue before.

[mydea]

Hey,

the thing that controls the headers is tracePropagationTargets. If you do not set this, and tracing is not enabled, not headers should be attached to any requests.

With the config you set, sentry-trace header would be attached to any URL matching "example.com".

Just to be clear, are you talking about @sentry/browser? (this is what you selected in the issue template) Because not sure how that would interact with HTML pages at all...?

[nCrafts]

I have tried both configurations with no success. Here is my current config. I removed the tracePropagationTargets. The headers are still being injected:

Sentry.init({
  dsn: "https://xxxxx.ingest.sentry.io/xxxxx",
  enableTracing: false,
  sampleRate: 0,
  tracesSampleRate: 0,
  autoSessionTracking: false,
});

Note that previously I was using ["example.com"] which also shouldn't inject those headers since example.com shouldn't match any URI on my server. The other relevant parts of my hooks.server.ts file:

import * as Sentry from "@sentry/sveltekit";
import { sentryHandle } from "@sentry/sveltekit";

const myErrorHandler = ({ error, event }: { error: any; event: any }) => {
  return {
    message: "Whoops!",
    code: error?.code ?? "UNKNOWN",
  };
};

export const handleError = Sentry.handleErrorWithSentry(myErrorHandler);
  
  export const handle = sequence(
    sentryHandle({
      injectFetchProxyScript: false,
    })
  );
  

[mydea]

Hey,

can you try just removing all trace sample rates completely, we handle it slightly different if it is defined vs. not defined.
Also, setting tracePropagationTargets: [] should generally disable setting this at all.

Sentry.init({
  dsn: "https://xxxxx.ingest.sentry.io/xxxxx",
  sampleRate: 0,
  autoSessionTracking: false,
  tracePropagationTargets: [],
});

Does that work?

[nCrafts]

That worked. Merci!