Sample examples

The examples below are based on the git sample project, see the link below for more information.

📂 Download C++ examples

📂 Download C# examples

Client

- Proxy & Stub

C++

// Client -> Server RMI Proxy instance
Simple::Proxy g_SimpleProxy;

// Unlike an RMI proxy, it is used after overriding a function.
class SimpleStub : public Simple::Stub
{
public:
	DECRMI_Simple_ShowChat;
	DECRMI_Simple_SystemChat;

	DECRMI_Simple_P2PChat;
};

// RMI stub instance for receiving messages
SimpleStub g_SimpleStub;

C#

using namespace Nettention.Proud;

// An RMI proxy is used to send messages.
// The function call is executed in a different process.
static Simple.Proxy g_Proxy = new Simple.Proxy();

// The RMI stub is used to receive messages.
static Simple.Stub g_Stub = new Simple.Stub();

- Defining RMI functions

C++

RMI functions use the following conventions for easy naming.

=> DEFRMI_GlobalName_FunctionName

DEFRMI_Simple_P2PChat(SimpleStub)
{
    ...

    // It has no special meaning, but must return true.
    return true;
}

DEFRMI_Simple_ShowChat(SimpleStub)
{
    ...
    return true;
}

DEFRMI_Simple_SystemChat(SimpleStub)
{
    ...
    return true;
}

C#

// A function that defines what to do when each stub function is received.
g_Stub.P2PChat = (...) =>
{
    ...
    return true;
}
    
g_Stub.ShowChat = (...) =>
{
    ...
    return true;
}
    
g_Stub.SystemChat = (...) =>
{
    ...
    return true;
}

- Create a NetClient object

C++

std::shared_ptr<Proud::CNetClient> netClient(Proud::CNetClient::Create());

C#

Nettention.Proud.NetClient netClient = new Nettention.Proud.NetClient();

- Connecting Events

C++

You can design the logic you need in the server connection event and then use it.

// Events that are called after the server connection is complete
netClient->OnJoinServerComplete = 
   [&](ErrorInfo *info, const ByteArray &replyFromServer)
{
    ...
}
    
// Events to run when the server is disconnected
netClient->OnLeaveServer = [&](ErrorInfo *errorInfo)
{
    ...
}
    
// Event to fire when a new p2p connection comes in
// memberHostID : p2p Connected Client ID
// groupHostID : p2p Connected Group ID
netClient->OnP2PMemberJoin = 
    [&](HostID memberHostID, HostID groupHostID,int memberCount, const ByteArray &customField)
{
    ...
}
    
// Events to fire when a p2p connection is lost 
netClient->OnP2PMemberLeave = 
    [](HostID memberHostID, HostID groupHostID,int memberCount)
{
    ...
}

C#

// Events that are called after the server connection is complete
netClient.JoinServerCompleteHandler = (info, replyFromServer) =>
{
    ...
};

// Logic to run when the server is disconnected
netClient.LeaveServerHandler = (errorInfo) =>
{
    ...
};

// Logic to run when a new member is added to a p2p group
netClient.P2PMemberJoinHandler = 
    (memberHostID, groupHostID, memberCount, customField) =>
{
    ...
};

// Logic to execute when a p2p member is disconnected
netClient.P2PMemberLeaveHandler = (memberHostID, groupHostID, memberCount) =>
{
    ...
};

- Proxy & Stub Registration

C++

// Register the proxy and stub you created with CNetClient
netClient->AttachProxy(&g_SimpleProxy);
netClient->AttachStub(&g_SimpleStub);

C#

// Connecting a proxy and stub to a NetClient instance
netClient.AttachProxy(g_Proxy);	    // Client-to-server => From client to server
netClient.AttachStub(g_Stub);	   // server-to-client => From server to client

- Connect to a server

C++

// Setting the parameters needed to start the server
Proud::CNetConnectionParam cp;

// You must enter the same protocol version as the server. You may not enter any at all.
cp.m_protocolVersion = g_Version;
cp.m_closeNoPingPongTcpConnections = false;
cp.m_serverPort = g_ServerPort;	

// Start connecting to the server
// This function returns immediately.
// In the meantime, it will try to connect in the background,
// the result is signaled by the OnJoinServerComplete event.
netClient->Connect(cp);

Then, in a function that will be called every frame, call netClient -> FrameMove().

// Example
while (true)
{
    netClient->FrameMove();
}

C#

// Setting the parameters needed to start the server
Nettention.Proud.NetConnectionParam cp = 
    new Nettention.Proud.NetConnectionParam();

// Same protocol version as the server
cp.protocolVersion.Set(SimpleCSharp.Vars.m_Version);

// server address
cp.serverIP = "localhost";

// server port
cp.serverPort = (ushort)SimpleCSharp.Vars.m_serverPort;

// Start connecting to the server
// This function returns immediately.
// In the meantime, it will try to connect in the background,
// the OnJoinServerComplete event indicates that the connection is complete.
netClient.Connect(cp);

Call netClient.FrameMove() in a function that will be called every frame thereafter.

// Example
while (true)
{
    netClient.FrameMove();
}

By default, a FrameMove must be performed before the event is fired.

Server

- Proxy & Stub

C++

// RMI Proxy for Server to Client Transfers
Simple::Proxy g_SimpleProxy;


// Unlike an RMI proxy, it is used after overriding a function.
class SimpleStub : public Simple::Stub
{
public:
	DECRMI_Simple_Chat;
};

// Server -> Client RMI Stub Instance
SimpleStub g_SimpleStub;

C#

using namespace Nettention.Proud;

// RMI Stub for receiving messages from clients
static Simple.Stub g_Stub = new Simple.Stub();

// RMI proxy
static Simple.Proxy g_Proxy = new Simple.Proxy();

- Defining RMI functions

C++

DEFRMI_Simple_Chat(SimpleStub)
{
    ...
    return true;
}

C#

// Define logic to run when a client receives a chat message.
g_Stub.Chat = (...) =>
{
    ...
    return true;
};

- Create a NetServer object

C++

std::shared_ptr<Proud::CNetServer> srv(Proud::CNetServer::Create());

C#

Nettention.Proud.NetServer srv = new Nettention.Proud.NetServer();

- Connecting Events

C++

// Sets the logic to run when a client connects to the server.
srv->OnClientJoin = 
    [](CNetClientInfo* clientInfo, ErrorInfo* errorInfo, const ByteArray& comment)
{
    ...
};

// Sets the logic to run when the client server connection is lost.
srv->OnClientLeave = 
    [](CNetClientInfo *clientInfo, ErrorInfo *errorInfo, const ByteArray& comment)
{
    ...
};

C#

// Sets the logic to run when a client connects to the server.
srv.ClientJoinHandler = (clientInfo) =>
{
    ...
};

// Sets the logic to run when the client server connection is lost.
srv.ClientLeaveHandler = (clientInfo, errorInfo, comment) =>
{
    ...
};

- Proxy & Stub Registration

C++

// Register the proxy and stub on the created CNetServer instance.
srv->AttachStub(&g_SimpleStub);
srv->AttachProxy(&g_SimpleProxy);

C#

// Register the proxy and stub on the created CNetServer instance.
srv.AttachStub(g_Stub);
srv.AttachProxy(g_Proxy);

Start a server

C++

Proud::CStartServerParameter p1;

// This must be the same to the client. => Must be the same as the client.
p1.m_protocolVersion = g_Version; 

// TCP listening endpoint => TCP connections incoming PORT
p1.m_tcpPorts.Add(g_ServerPort); 

/* Start the server
This function raises an exception on failure.
If you don't specifically specify a threading model, 
RMI functions and event callbacks by sending messages are invoked in a partitioned thread pool.
You can specify the thread model separately, which is covered in the help. https://guide.nettention.com/cpp_ko#thread_pool_sharing
*/
srv->Start(p1);

C#

var p1 = new Nettention.Proud.StartServerParameter();

// This must be the same to the client. => Must be the same as the client.
p1.protocolVersion = new Nettention.Proud.Guid(Vars.m_Version); 

// TCP listening endpoint => TCP connection incoming PORT
p1.tcpPorts.Add(Vars.m_serverPort);

/* Start the server
This function raises an exception on failure.
If you don't specifically specify a threading model, 
RMI functions and event callbacks by sending messages are invoked in a partitioned thread pool.
You can specify the thread model separately, which is covered in the help. https://guide.nettention.com/cpp_ko#thread_pool_sharing
*/
srv.Start(p1);

Common

- vars.h

C++

extern Proud::Guid g_Version;
extern int g_ServerPort;

- vars.cpp, vars.cs

C++

// Defined protocol version
// Both the server and client must have the same value.
PNGUID guid = { 0x3ae33249, 0xecc6, 0x4980, { 0xbc, 0x5d, 0x7b, 0xa, 0x99, 0x9c, 0x7, 0x39 } };
Guid g_Version = Guid(guid);

// TCP listening port number.
int g_ServerPort = 33334;

C#

namespace SimpleCSharp
{
    public class Vars
    {
        // protocol version to apply equally to server and client
        public static System.Guid m_Version = new System.Guid("{ 0x3ae33249, 0xecc6, 0x4980, { 0xbc, 0x5d, 0x7b, 0xa, 0x99, 0x9c, 0x7, 0x39 } }");
        public static int m_serverPort = 33334;
    }
}