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fix: only wrap with SyscallConn() when currentConn implements syscall.Conn

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This commit is contained in:
gVisor bot 2022-12-25 13:29:25 +08:00
parent a0d15df880
commit 50f6045a36
1 changed files with 18 additions and 11 deletions
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29
transport/hysteria/conns/udp/hop.go
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@ -58,7 +58,7 @@ type udpPacket struct {
addr net.Addr
}
func NewObfsUDPHopClientPacketConn(server string, serverPorts string, hopInterval time.Duration, obfs obfs.Obfuscator, dialer utils.PacketDialer) (*ObfsUDPHopClientPacketConn, error) {
func NewObfsUDPHopClientPacketConn(server string, serverPorts string, hopInterval time.Duration, obfs obfs.Obfuscator, dialer utils.PacketDialer) (net.PacketConn, error) {
ports, err := parsePorts(serverPorts)
if err != nil {
return nil, err
@ -105,6 +105,9 @@ func NewObfsUDPHopClientPacketConn(server string, serverPorts string, hopInterva
}
go conn.recvRoutine(conn.currentConn)
go conn.hopRoutine(dialer, rAddr)
if _, ok := conn.currentConn.(syscall.Conn); ok {
return &ObfsUDPHopClientPacketConnWithSyscall{conn}, nil
}
return conn, nil
}
@ -281,16 +284,6 @@ func (c *ObfsUDPHopClientPacketConn) SetWriteBuffer(bytes int) error {
return trySetPacketConnWriteBuffer(c.currentConn, bytes)
}
func (c *ObfsUDPHopClientPacketConn) SyscallConn() (syscall.RawConn, error) {
c.connMutex.RLock()
defer c.connMutex.RUnlock()
sc, ok := c.currentConn.(syscall.Conn)
if !ok {
return nil, errors.New("not supported")
}
return sc.SyscallConn()
}
func trySetPacketConnReadBuffer(pc net.PacketConn, bytes int) error {
sc, ok := pc.(interface {
SetReadBuffer(bytes int) error
@ -311,6 +304,20 @@ func trySetPacketConnWriteBuffer(pc net.PacketConn, bytes int) error {
return nil
}
type ObfsUDPHopClientPacketConnWithSyscall struct {
*ObfsUDPHopClientPacketConn
}
func (c *ObfsUDPHopClientPacketConnWithSyscall) SyscallConn() (syscall.RawConn, error) {
c.connMutex.RLock()
defer c.connMutex.RUnlock()
sc, ok := c.currentConn.(syscall.Conn)
if !ok {
return nil, errors.New("not supported")
}
return sc.SyscallConn()
}
// parsePorts parses the multi-port server address and returns the host and ports.
// Supports both comma-separated single ports and dash-separated port ranges.
// Format: "host:port1,port2-port3,port4"