Implemented Hello World

src/client.c

@@ -5,6 +5,10 @@
  * Lorenz Stechauner, 2020-12-03
  */
 
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "necronda-server.h"
 #include "utils.h"
 #include "net/http.h"
 
@@ -23,3 +27,28 @@ int client_connection_handler() {
     // TODO implement client_connection_handler
     return 0;
 }
+
+pid_t client_handler(int socket) {
+    struct sockaddr_in client_addr;
+    unsigned int client_addr_len = sizeof(client_addr);
+
+    int client = accept(socket, (struct sockaddr *) &client_addr, &client_addr_len);
+    if (client == -1) {
+        fprintf(stderr, ERR_STR "Unable to accept connection: %s" CLR_STR "\n", strerror(errno));
+        return -1;
+    }
+
+    pid_t pid = fork();
+    if (pid == 0) {
+        // child
+        recv(client, NULL, 0, 0);
+        char buf[] = "Hello world!\n";
+        send(client, buf, strlen(buf), 0);
+        close(client);
+        return 0;
+    } else {
+        // parent
+        close(client);
+        return pid;
+    }
+}