Fix processing domain address in packet

transport/hysteria/protocol.go

@@ -498,7 +498,12 @@ func (c *PacketConn) ReadFrom(p []byte) (n int, addr net.Addr, err error) {
 		return
 	}
 	n = copy(p, msg.Data)
-	addr = M.ParseSocksaddrHostPort(msg.Host, msg.Port).UDPAddr()
+	destination := M.ParseSocksaddrHostPort(msg.Host, msg.Port)
+	if destination.IsFqdn() {
+		addr = destination
+	} else {
+		addr = destination.UDPAddr()
+	}
 	return
 }
 

transport/trojan/protocol.go

@@ -131,7 +131,11 @@ func (c *ClientPacketConn) ReadFrom(p []byte) (n int, addr net.Addr, err error)
 		return
 	}
 	n = buffer.Len()
-	addr = destination.UDPAddr()
+	if destination.IsFqdn() {
+		addr = destination
+	} else {
+		addr = destination.UDPAddr()
+	}
 	return
 }
 

transport/vless/client.go

@@ -196,7 +196,11 @@ func (c *PacketConn) ReadFrom(p []byte) (n int, addr net.Addr, err error) {
 	if err != nil {
 		return
 	}
-	addr = c.destination.UDPAddr()
+	if c.destination.IsFqdn() {
+		addr = c.destination
+	} else {
+		addr = c.destination.UDPAddr()
+	}
 	return
 }
 

transport/vless/service.go

@@ -146,7 +146,11 @@ func (c *serverPacketConn) ReadFrom(p []byte) (n int, addr net.Addr, err error)
 	if err != nil {
 		return
 	}
-	addr = c.destination.UDPAddr()
+	if c.destination.IsFqdn() {
+		addr = c.destination
+	} else {
+		addr = c.destination.UDPAddr()
+	}
 	return
 }