Defines the intermediate data structures used between the Tracer, and Reporters, containing only de-normalised fields relevant to the data transfer to trace collectors (e.g. Zipkin server), de-coupling from internal Tracer server state. In particular, protocol spans have a duration, rather than an end_timestamp.

See also

• Tapper.Protocol.Span
• Tapper.Protocol.Annotation
• Tapper.Protocol.BinaryAnnotation
• Tapper.Protocol.Endpoint
• Tapper.Reporter.Api - consumes protocol spans.