Working Server and Client

network/networking.c

@@ -0,0 +1,88 @@
+#include "networking.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+
+Server StartServer(int port) {
+    Server s = {2};
+    s.clientID = 0;
+
+
+    // Create Socket
+    if ((s.server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {
+        perror("socket failed");
+        exit(EXIT_FAILURE);
+    }
+
+    // Set Address
+    s.address.sin_family = AF_INET;
+    s.address.sin_addr.s_addr = INADDR_ANY; // listen on all interfaces
+    s.address.sin_port = htons(port);
+
+    // Bind Port
+    if (bind(s.server_fd, (struct sockaddr *)&s.address, sizeof(s.address)) < 0) {
+        perror("bind failed");
+        close(s.server_fd);
+        exit(EXIT_FAILURE);
+    }
+
+    // Listen for incoming connections
+    if (listen(s.server_fd, 3) < 0) {
+        perror("listen");
+        close(s.server_fd);
+        exit(EXIT_FAILURE);
+    }
+
+    printf("Server listening on port %d...\n", port);
+
+    return s;
+}
+
+void RemoveClient(Server* s, int index) {
+    close(s->clients[index]);
+    s->clients[index] = s->clients[s->client_count - 1];
+    s->client_count--;
+}
+
+Client StartClient(char* host, int port) {    
+
+    Client c;
+
+    // Create socket
+    if ((c.client_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+        perror("socket failed");
+        exit(EXIT_FAILURE);
+    }
+
+    // Set address info
+    c.address.sin_family = AF_INET;
+    c.address.sin_port = htons(port);
+
+    // Convert hostname/IP to binary form
+    if (inet_pton(AF_INET, host, &c.address.sin_addr) <= 0) {
+        // If not a direct IP, try resolving hostname
+        struct hostent* he = gethostbyname(host);
+        if (he == NULL) {
+            perror("gethostbyname failed");
+            close(c.client_fd);
+            exit(EXIT_FAILURE);
+        }
+        memcpy(&c.address.sin_addr, he->h_addr_list[0], he->h_length);
+    }
+
+    // Connect to server
+    if (connect(c.client_fd, (struct sockaddr*)&c.address, sizeof(c.address)) < 0) {
+        perror("connect failed");
+        close(c.client_fd);
+        exit(EXIT_FAILURE);
+    }
+
+    printf("Connected to %s:%d\n", host, port);
+
+    return c;
+}
+
+