improved HTTP performance, especially when match_domains are used; api json string fix

internal/net/http/common.go

@@ -16,13 +16,12 @@ var (
 		Proxy:                 http.ProxyFromEnvironment,
 		DialContext:           defaultDialer.DialContext,
 		ForceAttemptHTTP2:     true,
-		MaxIdleConns:          100,
-		MaxIdleConnsPerHost:   10,
+		MaxIdleConnsPerHost:   100,
 		TLSHandshakeTimeout:   10 * time.Second,
 		ExpectContinueTimeout: 1 * time.Second,
 	}
 	DefaultTransportNoTLS = func() *http.Transport {
-		var clone = DefaultTransport.Clone()
+		clone := DefaultTransport.Clone()
 		clone.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
 		return clone
 	}()

internal/net/http/reverse_proxy_mod.go

@@ -404,7 +404,7 @@ func (p *ReverseProxy) serveHTTP(rw http.ResponseWriter, req *http.Request) {
 
 	rw.WriteHeader(res.StatusCode)
 
-	err = U.Copy2(req.Context(), rw, res.Body)
+	_, err = io.Copy(rw, res.Body)
 	if err != nil {
 		if !errors.Is(err, context.Canceled) {
 			p.errorHandler(rw, req, err, true)