refactor: Change the TCP_PACKET_* defines into an enum.

Author: iphydf

toxcore/TCP_common.h

@@ -24,18 +24,20 @@ void wipe_priority_list(const Memory *mem, TCP_Priority_List *p);
 #define NUM_RESERVED_PORTS 16
 #define NUM_CLIENT_CONNECTIONS (256 - NUM_RESERVED_PORTS)
 
-#define TCP_PACKET_ROUTING_REQUEST  0
-#define TCP_PACKET_ROUTING_RESPONSE 1
-#define TCP_PACKET_CONNECTION_NOTIFICATION 2
-#define TCP_PACKET_DISCONNECT_NOTIFICATION 3
-#define TCP_PACKET_PING 4
-#define TCP_PACKET_PONG 5
-#define TCP_PACKET_OOB_SEND 6
-#define TCP_PACKET_OOB_RECV 7
-#define TCP_PACKET_ONION_REQUEST  8
-#define TCP_PACKET_ONION_RESPONSE 9
-#define TCP_PACKET_FORWARD_REQUEST 10
-#define TCP_PACKET_FORWARDING 11
+typedef enum Tcp_Packet {
+    TCP_PACKET_ROUTING_REQUEST          = 0,
+    TCP_PACKET_ROUTING_RESPONSE         = 1,
+    TCP_PACKET_CONNECTION_NOTIFICATION  = 2,
+    TCP_PACKET_DISCONNECT_NOTIFICATION  = 3,
+    TCP_PACKET_PING                     = 4,
+    TCP_PACKET_PONG                     = 5,
+    TCP_PACKET_OOB_SEND                 = 6,
+    TCP_PACKET_OOB_RECV                 = 7,
+    TCP_PACKET_ONION_REQUEST            = 8,
+    TCP_PACKET_ONION_RESPONSE           = 9,
+    TCP_PACKET_FORWARD_REQUEST          = 10,
+    TCP_PACKET_FORWARDING               = 11,
+} Tcp_Packet;
 
 #define TCP_HANDSHAKE_PLAIN_SIZE (CRYPTO_PUBLIC_KEY_SIZE + CRYPTO_NONCE_SIZE)
 #define TCP_SERVER_HANDSHAKE_SIZE (CRYPTO_NONCE_SIZE + TCP_HANDSHAKE_PLAIN_SIZE + CRYPTO_MAC_SIZE)