net/http.transportRequest.extra (field)

5 uses

	net/http (current package)
		transport.go#L524: 	extra    Header                 // extra headers to write, or nil
		transport.go#L535: 	if tr.extra == nil {
		transport.go#L536: 		tr.extra = make(Header)
		transport.go#L538: 	return tr.extra
		transport.go#L2655: 			err := wr.req.Request.write(pc.bw, pc.isProxy, wr.req.extra, pc.waitForContinue(wr.continueCh))