Don't record spans for internal SDK requests to the DSN

[sl0thentr0py]

How do you use Sentry?

Sentry Saas (sentry.io)

Version

1.25.1

Steps to Reproduce

import sentry_sdk

sentry_sdk.init(traces_sample_rate=1.0, debug=True)

# for i in range(1000):
with sentry_sdk.start_transaction(name='parent transaction'):
    with sentry_sdk.start_span(op='span wrapper', description='foobar'):
        for i in range(100):
            with sentry_sdk.start_transaction(name='child transaction'):
                for i in range(1050):
                    with sentry_sdk.start_span(op='sleep', description='zzz'):
                        2**10

sentry_sdk.flush(10)

Expected Result

no internal http spans

Actual Result

[sentrivana]

How GO does this, for inspiration: https://github.com/getsentry/sentry-go/blob/master/otel/internal/utils/sentryrequest.go#L27-L47 So that the detection also works for self-hosted setups.