Tutorial code sample 6

Finishing our demo.
Our changes cause the RPC call to relay and not to send back to the sender and to allow strings to be sent from the client at any time.

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

    #define MAX_CLIENTS 10
    #define SERVER_PORT 60000

    // Moved out of main - needs global scope
    RakPeerInterface *peer;
    bool isServer;

    void PrintMessage(RPCParameters *rpcParameters)
    {
    	printf("%s\n", rpcParameters->input);

    	if (isServer){
    		peer->RPC("PrintMessage",(const char*)rpcParameters->input, rpcParameters->numberOfBitsOfData, HIGH_PRIORITY, RELIABLE_ORDERED, 0, rpcParameters->sender, true, 0, UNASSIGNED_NETWORK_ID, 0);
    	}
    }

    int main(void)
    {
    	char str[512];
    	//RakPeerInterface *peer = RakNetworkFactory::GetRakPeerInterface();
    	//bool isServer;
    	Packet *packet;

    	peer = RakNetworkFactory::GetRakPeerInterface();

    	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);
    	}

    	REGISTER_STATIC_RPC(peer, PrintMessage);

    	while (1)
    	{

    		if (!isServer){
    			printf("Enter a string to show on the server: ");
    			gets(str);
    			// Two tricky things here.  First, you have to remember to send the NULL terminator so you need strlen(str)+1
    			// Second, if you didn't read the docs you might not realize RPC takes the number of bits rather than the number of bytes.
    			// You have to multiply the number of bytes by 8
    			// Don't forget that RPC takes bits as the data length, not bytes!
    			if (str[0])
    				peer->RPC("PrintMessage",str, (strlen(str)+1)*8, HIGH_PRIORITY, RELIABLE_ORDERED, 0, UNASSIGNED_SYSTEM_ADDRESS, true, 0, UNASSIGNED_NETWORK_ID,0);
    		}

    		packet=peer->Receive();

    		while(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");
    				//printf("Enter a string to show on the server: ");
    				//gets(str);
    				// Two tricky things here.  First, you have to remember to send the NULL terminator so you need strlen(str)+1
    				// Second, if you didn't read the docs you might not realize RPC takes the number of bits rather than the number of bytes.
    				// You have to multiply the number of bytes by 8
    				// Don't forget that RPC takes bits as the data length, not bytes!
    				//peer->RPC("PrintMessage",str, (strlen(str)+1)*8, HIGH_PRIORITY, RELIABLE_ORDERED, 0, UNASSIGNED_SYSTEM_ADDRESS, true, 0, UNASSIGNED_NETWORK_ID,0);
    				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);

    			// Stay in the loop as long as there are more packets.
    			packet = peer->Receive();
    		}
    	}

    	RakNetworkFactory::DestroyRakPeerInterface(peer);

    	return 0;
    }