Re: [Ietf-message-headers] Permanent message header field registration for traceparent and tracestate
Philippe Le Hégaret <plh@w3.org> Sun, 24 November 2019 20:46 UTC
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To: Julian Reschke <julian.reschke@gmx.de>, "ietf-message-headers@lists.ietf.org" <ietf-message-headers@lists.ietf.org>
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From: Philippe Le Hégaret <plh@w3.org>
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Date: Sun, 24 Nov 2019 15:46:42 -0500
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Subject: Re: [Ietf-message-headers] Permanent message header field registration for traceparent and tracestate
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On 11/24/2019 3:39 PM, Julian Reschke wrote: > The spec link's anchor doesn't work for me. > <https://www.w3.org/TR/trace-context/#traceparent-header> does, though. Didn't check and realize the links had changed. Here is an updated template: [[ Header field name: traceparent Applicable protocol: http Status: permanent Change Controller: Distributed Tracing Working Group https://www.w3.org/2018/distributed-tracing/ public-trace-context@w3.org Specification: https://www.w3.org/TR/trace-context/#traceparent-header Header field name: tracestate Applicable protocol: http Status: permanent Change Controller: Distributed Tracing Working Group https://www.w3.org/2018/distributed-tracing/ public-trace-context@w3.org Specification: https://www.w3.org/TR/trace-context/#tracestate-header ]] > Quoting: > >> 3.2 Traceparent Header >> >> The traceparent HTTP header field identifies the incoming request in a >> tracing system. It has four fields: >> >> version >> trace-id >> parent-id >> trace-flags > > So what is the actual syntax of the header field? It's mentioned in the section [[ [...] The tracestate field value is a list of [list-members] separated by [commas]. [...] list = list-member 0*31( OWS "," OWS list-member ) list-member = key "=" value list-member = OWS [...] key = lcalpha 0*255( lcalpha / DIGIT / "_" / "-"/ "*" / "/" ) key = ( lcalpha / DIGIT ) 0*240( lcalpha / DIGIT / "_" / "-"/ "*" / "/" ) "@" lcalpha 0*13( lcalpha / DIGIT / "_" / "-"/ "*" / "/" ) lcalpha = %x61-7A ; a-z [...] value = 0*255(chr) nblk-chr nblk-chr = %x21-2B / %x2D-3C / %x3E-7E chr = %x20 / nblk-chr ]] https://www.w3.org/TR/trace-context/#tracestate-header-field-values Philippe
- [Ietf-message-headers] Permanent message header f… Philippe Le Hégaret
- Re: [Ietf-message-headers] Permanent message head… Julian Reschke
- Re: [Ietf-message-headers] Permanent message head… Philippe Le Hégaret
- Re: [Ietf-message-headers] Permanent message head… Julian Reschke
- Re: [Ietf-message-headers] Permanent message head… Philippe Le Hégaret