Chore: http

listener/http/proxy.go

@@ -62,9 +62,9 @@ func HandleConn(c net.Conn, in chan<- C.ConnContext, cache *cache.Cache[string,
 			request.RequestURI = ""
 
 			if isUpgradeRequest(request) {
-				handleUpgrade(conn, request, in)
-
-				return // hijack connection
+				if resp = handleUpgrade(conn, conn.RemoteAddr(), request, in); resp == nil {
+					return // hijack connection
+				}
 			}
 
 			removeHopByHopHeaders(request.Header)
@@ -96,7 +96,7 @@ func HandleConn(c net.Conn, in chan<- C.ConnContext, cache *cache.Cache[string,
 		}
 	}
 
-	conn.Close()
+	_ = conn.Close()
 }
 
 func authenticate(request *http.Request, cache *cache.Cache[string, bool]) *http.Response {

listener/http/upgrade.go

@@ -1,9 +1,12 @@
 package http
 
 import (
+	"context"
+	"crypto/tls"
 	"net"
 	"net/http"
 	"strings"
+	"time"
 
 	"github.com/Dreamacro/clash/adapter/inbound"
 	N "github.com/Dreamacro/clash/common/net"
@@ -15,15 +18,17 @@ func isUpgradeRequest(req *http.Request) bool {
 	return strings.EqualFold(req.Header.Get("Connection"), "Upgrade")
 }
 
-func handleUpgrade(conn net.Conn, request *http.Request, in chan<- C.ConnContext) {
-	defer conn.Close()
-
+func handleUpgrade(conn net.Conn, request *http.Request, in chan<- C.ConnContext) (resp *http.Response) {
 	removeProxyHeaders(request.Header)
 	removeExtraHTTPHostPort(request)
 
 	address := request.Host
 	if _, _, err := net.SplitHostPort(address); err != nil {
-		address = net.JoinHostPort(address, "80")
+		port := "80"
+		if request.TLS != nil {
+			port = "443"
+		}
+		address = net.JoinHostPort(address, port)
 	}
 
 	dstAddr := socks5.ParseAddr(address)
@@ -35,27 +40,56 @@ func handleUpgrade(conn net.Conn, request *http.Request, in chan<- C.ConnContext
 
 	in <- inbound.NewHTTP(dstAddr, conn.RemoteAddr(), right)
 
-	bufferedLeft := N.NewBufferedConn(left)
-	defer bufferedLeft.Close()
+	var remoteServer *N.BufferedConn
+	if request.TLS != nil {
+		tlsConn := tls.Client(left, &tls.Config{
+			ServerName: request.URL.Hostname(),
+		})
 
-	err := request.Write(bufferedLeft)
+		ctx, cancel := context.WithTimeout(context.Background(), C.DefaultTLSTimeout)
+		defer cancel()
+		if tlsConn.HandshakeContext(ctx) != nil {
+			_ = localConn.Close()
+			_ = left.Close()
+			return
+		}
+
+		remoteServer = N.NewBufferedConn(tlsConn)
+	} else {
+		remoteServer = N.NewBufferedConn(left)
+	}
+	defer func() {
+		_ = remoteServer.Close()
+	}()
+
+	err := request.Write(remoteServer)
 	if err != nil {
+		_ = localConn.Close()
 		return
 	}
 
-	resp, err := http.ReadResponse(bufferedLeft.Reader(), request)
-	if err != nil {
-		return
-	}
-
-	removeProxyHeaders(resp.Header)
-
-	err = resp.Write(conn)
+	resp, err = http.ReadResponse(remoteServer.Reader(), request)
 	if err != nil {
+		_ = localConn.Close()
 		return
 	}
 
 	if resp.StatusCode == http.StatusSwitchingProtocols {
-		N.Relay(bufferedLeft, conn)
+		removeProxyHeaders(resp.Header)
+
+		err = localConn.SetReadDeadline(time.Time{}) // set to not time out
+		if err != nil {
+			return
+		}
+
+		err = resp.Write(localConn)
+		if err != nil {
+			return
+		}
+
+		N.Relay(remoteServer, localConn) // blocking here
+		_ = localConn.Close()
+		resp = nil
 	}
+	return
 }

listener/tun/ipstack/system/mars/nat/table.go

@@ -2,7 +2,6 @@ package nat
 
 import (
 	"net/netip"
-	"sync"
 
 	"github.com/Dreamacro/clash/common/generics/list"
 )
@@ -25,7 +24,6 @@ type binding struct {
 }
 
 type table struct {
-	mu        sync.Mutex
 	tuples    map[tuple]*list.Element[*binding]
 	ports     [portLength]*list.Element[*binding]
 	available *list.List[*binding]
@@ -39,13 +37,13 @@ func (t *table) tupleOf(port uint16) tuple {
 
 	elm := t.ports[offset]
 
+	t.available.MoveToFront(elm)
+
 	return elm.Value.tuple
 }
 
 func (t *table) portOf(tuple tuple) uint16 {
-	t.mu.Lock()
 	elm := t.tuples[tuple]
-	t.mu.Unlock()
 	if elm == nil {
 		return 0
 	}
@@ -59,11 +57,8 @@ func (t *table) newConn(tuple tuple) uint16 {
 	elm := t.available.Back()
 	b := elm.Value
 
-	t.mu.Lock()
 	delete(t.tuples, b.tuple)
 	t.tuples[tuple] = elm
-	t.mu.Unlock()
-
 	b.tuple = tuple
 
 	t.available.MoveToFront(elm)
@@ -71,19 +66,6 @@ func (t *table) newConn(tuple tuple) uint16 {
 	return portBegin + b.offset
 }
 
-func (t *table) delete(tup tuple) {
-	t.mu.Lock()
-	elm := t.tuples[tup]
-	if elm == nil {
-		t.mu.Unlock()
-		return
-	}
-	delete(t.tuples, tup)
-	t.mu.Unlock()
-
-	t.available.MoveToBack(elm)
-}
-
 func newTable() *table {
 	result := &table{
 		tuples:    make(map[tuple]*list.Element[*binding], portLength),

listener/tun/ipstack/system/mars/nat/tcp.go

@@ -16,8 +16,6 @@ type conn struct {
 	net.Conn
 
 	tuple tuple
-
-	close func(tuple tuple)
 }
 
 func (t *TCP) Accept() (net.Conn, error) {
@@ -39,9 +37,6 @@ func (t *TCP) Accept() (net.Conn, error) {
 	return &conn{
 		Conn:  c,
 		tuple: tup,
-		close: func(tuple tuple) {
-			t.table.delete(tuple)
-		},
 	}, nil
 }
 
@@ -57,11 +52,6 @@ func (t *TCP) SetDeadline(time time.Time) error {
 	return t.listener.SetDeadline(time)
 }
 
-func (c *conn) Close() error {
-	c.close(c.tuple)
-	return c.Conn.Close()
-}
-
 func (c *conn) LocalAddr() net.Addr {
 	return &net.TCPAddr{
 		IP:   c.tuple.SourceAddr.Addr().AsSlice(),