Basic server with keepalive.

src/client/cspt-client.c

@@ -0,0 +1,94 @@
+// Client-Side Prediction Test - Client
+// Barra Ó Catháin - 2023
+#include <netdb.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <strings.h>
+#include <stdbool.h>
+#include <sys/types.h>
+#include <arpa/inet.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include "../cspt-message.h"
+
+int main(int argc, char ** argv)
+{
+	uint8_t currentPlayerNumber = 0;
+	int serverSocket = 0;
+	bool continueRunning = true;
+	CsptMessage currentMessage;
+	struct sockaddr_in serverAddress;
+	
+	printf("Client-Side Prediction Test - Client Starting.\n");
+
+	// Give me a socket, and make sure it's working:
+	serverSocket = socket(AF_INET, SOCK_STREAM, 0);
+	if (serverSocket == -1)
+	{
+		printf("Socket creation failed.\n");
+		exit(EXIT_FAILURE);
+	}
+  
+	// Set our IP address and port. Default to localhost for testing:
+	serverAddress.sin_family = AF_INET;
+	serverAddress.sin_addr.s_addr = inet_addr("127.0.0.1");
+	serverAddress.sin_port = htons(5200);
+  
+	// Connect to the server:
+	if (connect(serverSocket, (struct sockaddr *)&serverAddress, sizeof(struct sockaddr_in)) != 0)
+	{
+		fprintf(stderr, "Connecting to the server failed.\n");
+		exit(0);
+	}
+
+	currentMessage.type = 0;
+	currentMessage.content = 0;
+
+	send(serverSocket, &currentMessage, sizeof(CsptMessage), 0);
+	recv(serverSocket, &currentMessage, sizeof(CsptMessage), 0);
+
+	if (currentMessage.type == 0)
+	{
+		currentPlayerNumber = currentMessage.content;
+	}
+
+	printf("Registered as: %u\n", currentPlayerNumber);
+	printf("%-7s | %u\n", messageStrings[currentMessage.type], currentMessage.content);
+	
+	while (continueRunning)
+	{
+		if (recv(serverSocket, &currentMessage, sizeof(CsptMessage), 0) > 0)
+		{
+			printf("%-7s | %u\n", messageStrings[currentMessage.type], currentMessage.content);
+			switch (currentMessage.type)
+			{
+				case 1:
+				{
+					// We've been told to disconnect:
+					shutdown(serverSocket, SHUT_RDWR);
+					serverSocket = 0;
+					continueRunning = false;
+					break;
+				}
+				case 2:
+				{
+					// Pinged, so we now must pong.
+					currentMessage.type = 3;
+					currentMessage.content = 0;
+					send(serverSocket, &currentMessage, sizeof(CsptMessage), 0);
+					break;
+				}
+			}
+		}
+		else
+		{
+			shutdown(serverSocket, SHUT_RDWR);
+			serverSocket = 0;
+			continueRunning = false;
+		}
+	}
+			
+	return 0;
+}