Client returns a new, wrapped http.Client.

CopyDeadline searches for the deadline in the headers and returns an updated context with a cancellation function.

Extract extracts the values from the headers (or trailers) and returns a new context with the values found.

ExtractWithDeadline works as Extract, but will set a deadline if one is found in the headers.

WrapClient wraps a standard http.Client.

WrapHandler wraps an http.Handler, adding configured values to the incoming context.

WrapHandlerFunc wraps an http.HandlerFunc, adding configured values to the incoming context.

A ContextRoundTripper propagates the configured context values in an outgoing HTTP request.