Describe the idea
Automatically create spans for outgoing requests and propagate the trace header sentry-trace with information on the current span (the one that was just created for the request).
Also include update in the tracing examples (see #1444 (comment)).
See also getsentry/develop#254
Why do you think it's beneficial to most of the users
Trace propagation is critical to have traces that connect services together as one coherent unit.
Without this, either services will create disconnected traces for the same request/operation and/or different sampling decisions will lead to fragmented trace data in Sentry.
Users shouldn't need to do manual propagation when we can instrument libraries automatically.
Possible implementation
Python: https://github.com/getsentry/sentry-python/blob/51987c57157102bbd32e1e7b084c26f4dc475d86/sentry_sdk/integrations/stdlib.py#L57-L112
JS Node: https://github.com/getsentry/sentry-javascript/blob/f7fc73313cb1f602dfbde856e116bb74f39dde81/packages/node/src/integrations/http.ts#L109-L123
JS Browser: https://github.com/getsentry/sentry-javascript/blob/13eea94a4da4334dd79f829a2657c03dbb50f780/packages/tracing/src/browser/request.ts#L87-L264
Describe the idea
Automatically create spans for outgoing requests and propagate the trace header
sentry-tracewith information on the current span (the one that was just created for the request).Also include update in the tracing examples (see #1444 (comment)).
See also getsentry/develop#254
Why do you think it's beneficial to most of the users
Trace propagation is critical to have traces that connect services together as one coherent unit.
Without this, either services will create disconnected traces for the same request/operation and/or different sampling decisions will lead to fragmented trace data in Sentry.
Users shouldn't need to do manual propagation when we can instrument libraries automatically.
Possible implementation
Python: https://github.com/getsentry/sentry-python/blob/51987c57157102bbd32e1e7b084c26f4dc475d86/sentry_sdk/integrations/stdlib.py#L57-L112
JS Node: https://github.com/getsentry/sentry-javascript/blob/f7fc73313cb1f602dfbde856e116bb74f39dde81/packages/node/src/integrations/http.ts#L109-L123
JS Browser: https://github.com/getsentry/sentry-javascript/blob/13eea94a4da4334dd79f829a2657c03dbb50f780/packages/tracing/src/browser/request.ts#L87-L264