put MSGID bytes back in to lnwire

lnwire/message.go

@@ -4,8 +4,23 @@ package lnwire
 import (
 	"bytes"
 	"fmt"
-	"github.com/btcsuite/btcd/wire"
 	"io"
+
+	"github.com/btcsuite/btcd/wire"
+)
+
+// message type identifyer bytes
+const (
+	MSGID_FUNDREQUEST  = 0x30
+	MSGID_FUNDRESPONSE = 0x31
+
+	MSGID_CLOSEREQUEST  = 0x40
+	MSGID_CLOSERESPONSE = 0x41
+
+	MSGID_TEXTCHAT = 0x70
+
+	MSGID_FWDMSG     = 0x20
+	MSGID_FWDAUTHREQ = 0x21
 )
 
 //4-byte network + 4-byte message id + payload-length 4-byte