fix

hello_world.c

@@ -4,6 +4,7 @@
 #include <unistd.h>
 #include <arpa/inet.h>
 #include <sys/socket.h>
+#include <sys/time.h>
 #include <signal.h>
 #include <time.h>
 #include <errno.h>
@@ -15,6 +16,7 @@ volatile sig_atomic_t keep_running = 1;
 
 // Signal handler function
 void handle_signal(int sig) {
+    (void)sig;  // Suppress unused parameter warning
     keep_running = 0;
 }
 
@@ -73,9 +75,9 @@ int main() {
         exit(EXIT_FAILURE);
     }
 
-    // Set socket options to reuse address and port
+    // Set socket options to reuse address
     int opt = 1;
-    if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt, sizeof(opt))) {
+    if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt))) {
         perror("setsockopt failed");
         exit(EXIT_FAILURE);
     }
@@ -124,8 +126,11 @@ int main() {
         get_time_string(time_buffer, sizeof(time_buffer));
         printf("[%s] Request from %s\n", time_buffer, client_ip);
 
-        read(new_socket, buffer, BUFFER_SIZE);
-        write(new_socket, http_response, strlen(http_response));
+        ssize_t bytes_read = read(new_socket, buffer, BUFFER_SIZE);
+        (void)bytes_read;  // Suppress unused variable warning
+        
+        ssize_t bytes_written = write(new_socket, http_response, strlen(http_response));
+        (void)bytes_written;  // Suppress unused variable warning
 
         close(new_socket);
     }