chore: move '/internal/pkg' to '/pkg'

pkg/utils/http/transport.go

@@ -0,0 +1,33 @@
+package http
+
+import (
+	"net"
+	"net/http"
+	"time"
+)
+
+// 创建并返回一个 [http.DefaultTransport] 对象副本。
+//
+// 出参：
+//   - transport: [http.DefaultTransport] 对象副本。
+func NewDefaultTransport() *http.Transport {
+	if http.DefaultTransport != nil {
+		if t, ok := http.DefaultTransport.(*http.Transport); ok {
+			return t.Clone()
+		}
+	}
+
+	return &http.Transport{
+		Proxy: http.ProxyFromEnvironment,
+		DialContext: (&net.Dialer{
+			Timeout:   30 * time.Second,
+			KeepAlive: 30 * time.Second,
+			DualStack: true,
+		}).DialContext,
+		ForceAttemptHTTP2:     true,
+		MaxIdleConns:          100,
+		IdleConnTimeout:       90 * time.Second,
+		TLSHandshakeTimeout:   10 * time.Second,
+		ExpectContinueTimeout: 1 * time.Second,
+	}
+}