* Adjustment: Update Bullet version to 3.24.

Engine/lib/bullet/test/clsocket/EchoServer.cpp

@@ -0,0 +1,67 @@
+
+#include "PassiveSocket.h"  // Include header for active socket object definition
+
+#define MAX_PACKET 4096
+
+int main(int argc, char **argv)
+{
+	CPassiveSocket socket;
+	CActiveSocket *pClient = NULL;
+
+	//--------------------------------------------------------------------------
+	// Initialize our socket object
+	//--------------------------------------------------------------------------
+	socket.Initialize();
+
+	socket.Listen("localhost", 6667);
+
+	while (true)
+	{
+		if ((pClient = socket.Accept()) != NULL)
+		{
+			int clientPort = socket.GetClientPort();
+			printf("connected from %s:%d\n", socket.GetClientAddr(), clientPort);
+			//----------------------------------------------------------------------
+			// Receive request from the client.
+			//----------------------------------------------------------------------
+			while (1)
+			{
+				//printf("try receive\n");
+				bool receivedData = false;
+				int recBytes = 0;
+				recBytes = pClient->Receive(MAX_PACKET);
+				if (recBytes)
+				{
+					char *msg = (char *)pClient->GetData();
+					msg[recBytes] = 0;
+					printf("received message [%s]\n", msg);
+					//------------------------------------------------------------------
+					// Send response to client and close connection to the client.
+					//------------------------------------------------------------------
+					pClient->Send(pClient->GetData(), pClient->GetBytesReceived());
+					receivedData = true;
+					if (strncmp(msg, "stop", 4) == 0)
+					{
+						printf("Stop request received\n");
+						break;
+					}
+				}
+				if (!receivedData)
+				{
+					printf("Didn't receive data.\n");
+					break;
+				}
+			}
+			printf("Disconnecting client.\n");
+			pClient->Close();
+			delete pClient;
+		}
+	}
+
+	//-----------------------------------------------------------------------------
+	// Receive request from the client.
+	//-----------------------------------------------------------------------------
+	socket.Close();
+
+	return 1;
+}