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 > // Printf and gets
    #include < string.h > // strcpy
    #include "RakClientInterface.h"
    #include "RakNetworkFactory.h"
    #include "RakServerInterface.h"
    #include "PacketEnumerations.h"

    int main(void)
    {
    	char str[512];
    	RakClientInterface *rakClientInterface;
    	RakServerInterface *rakServerInterface;
    	Packet *packet;

    	printf("(C)lient or (S)erver?\n");
    	gets(str);
    	if (str[0]=='c' || str[0]=='C')
    	{
    		rakClientInterface=RakNetworkFactory::GetRakClientInterface();
    		rakServerInterface=0;
    	}
    	else
    	{
    		rakClientInterface=0;
    		rakServerInterface=RakNetworkFactory::GetRakServerInterface();
    	}

    	if (rakServerInterface)
    	{
    		// Running in server mode on port 60000
    		rakServerInterface->Start(32, 0, 0, 60000);
    	}
    	else
    	{
    		// Running in client mode
    		printf("Enter server IP or hit enter for 127.0.0.1\n");
    		gets(str);
    		// 127.0.0.1 designates the feedback loop so we can test on one computer
    		if (str[0]==0)
    			strcpy(str, "127.0.0.1");
    		rakClientInterface->Connect(str, 60000, 0, 0, 0);
    	}

    	while (1)
    	{
    		if (rakServerInterface)
    			packet=rakServerInterface->Receive();
    		else
    			packet=rakClientInterface->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 (rakServerInterface)
    					printf("A client has disconnected.\n");
    				else
    					printf("We have been disconnected.\n");
    				break;
    			case ID_CONNECTION_LOST:
    				if (rakServerInterface)
    					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;
    			}

    			if (rakServerInterface)
    				rakServerInterface->DeallocatePacket(packet);
    			else
    				rakClientInterface->DeallocatePacket(packet);
    		}
    	}

    	if (rakClientInterface)
    		RakNetworkFactory::DestroyRakClientInterface(rakClientInterface);
    	else if (rakServerInterface)
    		RakNetworkFactory::DestroyRakServerInterface(rakServerInterface);
    	return 0;
    }