Tutorial code sample 2

Connecting, reading, and parsing network messages.
The target of this exercise was to add the following features to sample 1:

1. Create a main loop for the program.
2. Call Receive and store the pointer returned in a pointer variable of type Packet.
3. Include the header file to use struct Packet
4. If a packet arrived, check the first byte of Packet::data. Map this to a connectivity related network enumeration.
5. Print out the comment that goes along with the enumeration.
6. Deallocate the packet pointer when done with it.

New code over sample 1 is in bold.

    #include <stdio.h>
    #include <string.h>
    #include "RakNetworkFactory.h"
    #include "RakPeerInterface.h"
    #include "MessageIdentifiers.h"

    #define MAX_CLIENTS 10
    #define SERVER_PORT 60000

    int main(void)
    {
    	char str[512];

    	RakPeerInterface *peer = RakNetworkFactory::GetRakPeerInterface();
    	bool isServer;
    	Packet *packet;

    	printf("(C) or (S)erver?\n");
    	gets(str);

    	if ((str[0]=='c')||(str[0]=='C'))
    	{
    		peer->Startup(1,30,&SocketDescriptor(), 1);
    		isServer = false;
    	} else {
    		peer->Startup(MAX_CLIENTS, 30, &SocketDescriptor(SERVER_PORT,0), 1);
    		isServer = true;
    	}

    	if (isServer)
    	{
    		printf("Starting the server.\n");
    		// We need to let the server accept incoming connections from the clients
    		peer->SetMaximumIncomingConnections(MAX_CLIENTS);
    	} else {
    		printf("Enter server IP or hit enter for 127.0.0.1\n");
    		gets(str);
    		if (str[0]==0){
    			strcpy(str, "127.0.0.1");
    		}
    		printf("Starting the client.\n");
    		peer->Connect(str, SERVER_PORT, 0,0);

    	}

    	while (1)
    	{
    		packet=peer->Receive();
    		if (packet)
    		{
    			switch (packet->data[0])
    			{
    			case ID_REMOTE_DISCONNECTION_NOTIFICATION:
    				printf("Another client has disconnected.\n");
    				break;
    			case ID_REMOTE_CONNECTION_LOST:
    				printf("Another client has lost the connection.\n");
    				break;
    			case ID_REMOTE_NEW_INCOMING_CONNECTION:
    				printf("Another client has connected.\n");
    				break;
    			case ID_CONNECTION_REQUEST_ACCEPTED:
    				printf("Our connection request has been accepted.\n");
    				break;

    			case ID_NEW_INCOMING_CONNECTION:
    				printf("A connection is incoming.\n");
    				break;
    			case ID_NO_FREE_INCOMING_CONNECTIONS:
    				printf("The server is full.\n");
    				break;
    			case ID_DISCONNECTION_NOTIFICATION:
    				if (isServer){
    					printf("A client has disconnected.\n");
    				} else {
    					printf("We have been disconnected.\n");
    				}
    				break;
    			case ID_CONNECTION_LOST:
    				if (isServer){
    					printf("A client lost the connection.\n");
    				} else {
    					printf("Connection lost.\n");
    				}
    				break;
    			default:
    				printf("Message with identifier %i has arrived.\n", packet->data[0]);
    				break;
    			}

    			peer->DeallocatePacket(packet);
    		}
    	}

    	RakNetworkFactory::DestroyRakPeerInterface(peer);

    	return 0;
    }