added packet.py and the Packet class

pypong/networking/packet.py

@@ -0,0 +1,36 @@
+"""
+Contains the Packet class to help with the transmission, reading, and verification of infermation over the network
+"""
+
+
+class Packet:
+    """
+    Class that contains information to be sent over the network. Can self-verify and has methods (will have methods) to
+    easily encode and decode packet information
+    """
+    VALID_HEADERS = [
+        'PYPONGREQ',
+        'PYPONGRST'
+    ]
+    VALID_TYPES = [
+        'SVRINFO'
+    ]
+
+    def __init__(self, header, msg_type, *message):
+        self.header = header
+        self.msg_type = msg_type
+        self.message = []
+        for x in message:
+            self.message.append(x)
+
+    def integrity_check(self):
+        """
+        Verify that the information in the packet is correct and makes sense
+
+        :return: True if packet verifies correctly, False if not
+        """
+        if self.header not in Packet.VALID_HEADERS:
+            return False
+        if self.msg_type not in Packet.VALID_TYPES:
+            return False
+        return True