Module text_map_propagator

TextMapPropagator

TextMapPropagator performs the injection and extraction of a cross-cutting concern value as string key/values pairs into carriers that travel in-band across process boundaries.

The carrier of propagated data on both the client (injector) and server (extractor) side is usually an HTTP request.

In order to increase compatibility, the key/value pairs MUST only consist of US-ASCII characters that make up valid HTTP header fields as per RFC 7230.

Structs

• FieldIter
  An iterator over fields of a TextMapPropagator

Traits

• TextMapPropagator
  Methods to inject and extract a value as text into injectors and extractors that travel in-band across process boundaries.