Expose trace_id as header with go opentracing

[Gianluca Arbezzano]

Hello

I created a middleware in go that uses the opentracing-go library to trace HTTP requests coming to my HTTP server.

I would like to expose the trace_id as a response's header.

Does somebody have an idea about how to do that? I read online and it looks like it is currently out of scope for the opentracing specification to expose trace_id.

is it true?

[Yuri Shkuro]

It has been proposed https://github.com/opentracing/specification/blob/master/rfc/trace_identifiers.md

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