fix: proxyDialer panic when domain name was not resolved

transport/tuic/conn.go

@@ -2,7 +2,6 @@ package tuic
 
 import (
 	"net"
-	"net/netip"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -216,11 +215,11 @@ func (q *quicStreamPacketConn) WriteTo(p []byte, addr net.Addr) (n int, err erro
 	}
 	buf := pool.GetBuffer()
 	defer pool.PutBuffer(buf)
-	addrPort, err := netip.ParseAddrPort(addr.String())
+	address, err := NewAddressNetAddr(addr)
 	if err != nil {
 		return
 	}
-	err = NewPacket(q.connId, uint16(len(p)), NewAddressAddrPort(addrPort), p).WriteTo(buf)
+	err = NewPacket(q.connId, uint16(len(p)), address, p).WriteTo(buf)
 	if err != nil {
 		return
 	}

transport/tuic/protocol.go

@@ -464,6 +464,18 @@ func NewAddress(metadata *C.Metadata) Address {
 	}
 }
 
+func NewAddressNetAddr(addr net.Addr) (Address, error) {
+	addrStr := addr.String()
+	if addrPort, err := netip.ParseAddrPort(addrStr); err == nil {
+		return NewAddressAddrPort(addrPort), nil
+	}
+	metadata := &C.Metadata{}
+	if err := metadata.SetRemoteAddress(addrStr); err != nil {
+		return Address{}, err
+	}
+	return NewAddress(metadata), nil
+}
+
 func NewAddressAddrPort(addrPort netip.AddrPort) Address {
 	var addrType byte
 	port := addrPort.Port()