Ctrl+C properly stop the program

squinnondation/messages.py

@@ -356,7 +356,7 @@ class GoAwayTLV(TLV):
         self.type = raw_data[0]
         self.length = raw_data[1]
         self.code = GoAwayType(raw_data[2])
-        self.message = raw_data[3:self.length - 1].decode("UTF-8")
+        self.message = raw_data[3:2 + self.length].decode("UTF-8")
 
     def marshal(self) -> bytes:
         return self.type.to_bytes(1, sys.byteorder) + \
@@ -376,7 +376,7 @@ class GoAwayTLV(TLV):
         tlv.type = 6
         tlv.code = ga_type
         tlv.message = message
-        tlv.length = 1 + len(tlv.message)
+        tlv.length = 1 + len(tlv.message.encode("UTF-8"))
         return tlv