refactor: move utls roundtripper to pkg/net/utls

api/playback/allanime_client.go

@@ -1,7 +1,6 @@
 package playback
 
 import (
-	"bufio"
 	"bytes"
 	"context"
 	"crypto/aes"
@@ -12,7 +11,7 @@ import (
 	"fmt"
 	"io"
 	"log"
-	"net"
+	"mal/pkg/net/utls"
 	"net/http"
 	"net/url"
 	"os"
@@ -20,9 +19,6 @@ import (
 	"strconv"
 	"strings"
 	"time"
-
-	utls "github.com/refraction-networking/utls"
-	"golang.org/x/net/http2"
 )
 
 const (
@@ -50,54 +46,8 @@ var (
 	}
 )
 
-// utlsRoundTripper uses uTLS + HTTP/2 to mimic Firefox and bypass Cloudflare JA3 detection
-type utlsRoundTripper struct{}
-
-func (rt *utlsRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
-	dialer := &net.Dialer{Timeout: 10 * time.Second}
-	host := req.URL.Hostname()
-	port := req.URL.Port()
-	if port == "" {
-		port = "443"
-	}
-	addr := host + ":" + port
-
-	rawConn, err := dialer.DialContext(req.Context(), "tcp", addr)
-	if err != nil {
-		return nil, fmt.Errorf("tcp dial: %w", err)
-	}
-
-	uconn := utls.UClient(rawConn, &utls.Config{
-		ServerName: host,
-		NextProtos: []string{"h2", "http/1.1"},
-	}, utls.HelloFirefox_120)
-
-	if err := uconn.HandshakeContext(req.Context()); err != nil {
-		uconn.Close()
-		return nil, fmt.Errorf("utls handshake: %w", err)
-	}
-
-	alpn := uconn.ConnectionState().NegotiatedProtocol
-	if alpn == "h2" {
-		t := &http2.Transport{}
-		cc, err := t.NewClientConn(uconn)
-		if err != nil {
-			uconn.Close()
-			return nil, fmt.Errorf("http2 client conn: %w", err)
-		}
-		return cc.RoundTrip(req)
-	}
-
-	// Fallback to HTTP/1.1
-	if err := req.Write(uconn); err != nil {
-		uconn.Close()
-		return nil, fmt.Errorf("http1 write: %w", err)
-	}
-	return http.ReadResponse(bufio.NewReader(uconn), req)
-}
-
 var allAnimeUTLSClient = &http.Client{
-	Transport: &utlsRoundTripper{},
+	Transport: &utls.UtlsRoundTripper{},
 	Timeout:   30 * time.Second,
 }