fix(middleware): fix route bypass matching

- replace upstream headers approach with context value

internal/net/gphttp/reverseproxy/context.go

@@ -0,0 +1,61 @@
+package reverseproxy
+
+import (
+	"context"
+	"net/http"
+)
+
+var reverseProxyContextKey = struct{}{}
+
+func (rp *ReverseProxy) WithContextValue(r *http.Request) *http.Request {
+	return r.WithContext(context.WithValue(r.Context(), reverseProxyContextKey, rp))
+}
+
+func TryGetReverseProxy(r *http.Request) *ReverseProxy {
+	if rp, ok := r.Context().Value(reverseProxyContextKey).(*ReverseProxy); ok {
+		return rp
+	}
+	return nil
+}
+
+func TryGetUpstreamName(r *http.Request) string {
+	if rp := TryGetReverseProxy(r); rp != nil {
+		return rp.TargetName
+	}
+	return ""
+}
+
+func TryGetUpstreamScheme(r *http.Request) string {
+	if rp := TryGetReverseProxy(r); rp != nil {
+		return rp.TargetURL.Scheme
+	}
+	return ""
+}
+
+func TryGetUpstreamHost(r *http.Request) string {
+	if rp := TryGetReverseProxy(r); rp != nil {
+		return rp.TargetURL.Hostname()
+	}
+	return ""
+}
+
+func TryGetUpstreamPort(r *http.Request) string {
+	if rp := TryGetReverseProxy(r); rp != nil {
+		return rp.TargetURL.Port()
+	}
+	return ""
+}
+
+func TryGetUpstreamAddr(r *http.Request) string {
+	if rp := TryGetReverseProxy(r); rp != nil {
+		return rp.TargetURL.Host
+	}
+	return ""
+}
+
+func TryGetUpstreamURL(r *http.Request) string {
+	if rp := TryGetReverseProxy(r); rp != nil {
+		return rp.TargetURL.String()
+	}
+	return ""
+}