Function injectClientTraceByTag

proxy/proxy.go:1930–1963

TODO(sszuecs): copy from net.Client, we should refactor this to use net.Client

(ctx *context, t time.Time, req *http.Request, span ot.Span)

// TODO(sszuecs): copy from net.Client, we should refactor this to use net.Client
func injectClientTraceByTag(ctx *context, t time.Time, req *http.Request, span ot.Span) *http.Request {
	ctx.clientTraceTime = t
	trace := &httptrace.ClientTrace{
		DNSDone: func(httptrace.DNSDoneInfo) {
			span.SetTag(ClientTraceDNS, time.Since(ctx.clientTraceTime).Microseconds())
		},
		ConnectDone: func(string, string, error) {
			span.SetTag(ClientTraceConnect, time.Since(ctx.clientTraceTime).Microseconds())
		},
		TLSHandshakeDone: func(tls.ConnectionState, error) {
			span.SetTag(ClientTraceTLS, time.Since(ctx.clientTraceTime).Microseconds())
		},
		GotConn: func(httptrace.GotConnInfo) {
			span.SetTag(ClientTraceGetConn, time.Since(ctx.clientTraceTime).Microseconds())
		},
		Got100Continue: func() {
			span.SetTag(ClientTraceGot100Continue, time.Since(ctx.clientTraceTime).Microseconds())
		},
		WroteHeaders: func() {
			span.SetTag(ClientTraceWroteHeaders, time.Since(ctx.clientTraceTime).Microseconds())
		},
		WroteRequest: func(wri httptrace.WroteRequestInfo) {
			if wri.Err != nil {
				span.LogKV(ClientTraceWroteRequest, ensureUTF8(wri.Err.Error()))
			} else {
				span.SetTag(ClientTraceWroteRequest, time.Since(ctx.clientTraceTime).Microseconds())
			}
		},
		GotFirstResponseByte: func() {
			span.SetTag(ClientTraceGotFirstByte, time.Since(ctx.clientTraceTime).Microseconds())
		},
	}
	return req.WithContext(httptrace.WithClientTrace(req.Context(), trace))
}

// TODO(sszuecs): copy from net.Client, we should refactor this to use net.Client
func injectClientTraceByEvent(req *http.Request, span ot.Span) *http.Request {