intercept xhr requests made at application startup

[tmc]

Is there a good way to have requests that are made at startup get connected to the trace?

The last request here is made to the backend that served up the initial trace span but it is not being made with the traceparent header present.

Doing a little digging, it appears that XHR requests made at startup aren't connected to a server-provided trace because isTracingZone isn't true on the Zone, as far as I can tell.

[draffensperger]

Thanks for reaching out about this. I have been meaning to put a disclaimer on the repo, but this specific repo is not being actively maintained at this point, but instead work has focused on OpenTelemetry JS, which has similar functionality, see https://github.com/open-telemetry/opentelemetry-js and https://github.com/open-telemetry/opentelemetry-js-contrib/tree/master/plugins/web.

I would recommend giving those a try and if the problem is with them as well, then file an issue with that repo - the maintainers are more active and the community is stronger there.

See https://opensource.googleblog.com/2019/05/opentelemetry-merger-of-opencensus-and.html for more about the broader merge of OpenCensus into OpenTelemetry.