python fixes, tests

example/python/tmsp/reader.py

@@ -6,6 +6,7 @@ class BytesReader():
 
 	def read(self, n):
 		if len(self.buf) < n:
+			print "reader err: buf less than n"
 			# TODO: exception
 			return
 		r = self.buf[:n]

example/python/tmsp/server.py

@@ -77,9 +77,9 @@ class TMSPServer():
 		    	ret_code = res
 			res = None
 
+		    print "called", req_type, "ret code:", ret_code
 		    if ret_code != 0:
 			    print "non-zero retcode:", ret_code
-			    return
 
 		    if req_type in ("echo", "info"): # these dont return a ret code
 		    	response += bytearray([resTypeByte]) + encode(res)

example/python/tmsp/wire.py

@@ -2,6 +2,9 @@
 # the decoder works off a reader
 # the encoder returns bytearray
 
+def hex2bytes(h):
+	return bytearray(h.decode('hex'))
+
 def bytes2hex(b):
 	if type(b) in (str, unicode):
 		return "".join([hex(ord(c))[2:].zfill(2) for c in b])