Wrap the supplied round tripper in a layer that dumps information about HTTP requests.

Percent-encode the supplied string so that it matches the grammar laid out for the 'segment' category in RFC 3986.

Create a reader that streams an HTTP multipart body (see RFC 2388) composed of the contents of each component reader in sequence, each with a Content-Type header as specified.

Create an HTTP request with the supplied information.

MultipartReader is an io.Reader that generates HTTP multipart bodies.

An interface for transports that support the signature of http.Transport.CancelRequest.