net/http.transportRequest.extra (field)

5 uses

	net/http (current package)
		transport.go#L454: 	extra     Header                 // extra headers to write, or nil
		transport.go#L463: 	if tr.extra == nil {
		transport.go#L464: 		tr.extra = make(Header)
		transport.go#L466: 	return tr.extra
		transport.go#L2385: 			err := wr.req.Request.write(pc.bw, pc.isProxy, wr.req.extra, pc.waitForContinue(wr.continueCh))