Let ClientListener send client_id to Dispatcher

src/server.c

@@ -289,20 +289,33 @@ void *Dispatcher(void *arg) {
 /* Thread, listens for incoming messages */
 void *ClientListener(void *arg) {
     struct client_details details = *((struct client_details*) arg);
-    char buf[BUF_LEN];
+    char buf[BUF_LEN], client_id_buf[BUF_LEN];
     int n = 0;
 
     while (1) {
-        /* Read n bytes at a time, because we don't know how long the message will be */
-        while ((n = read(details.sockid, buf, BUF_LEN)) > 0) {
-            /* TODO: Get mutex */
+        /* Loop for as long as there is nothing to read */
+        while ((n = read(details.sockid, buf, BUF_LEN)) == 0);
+        if (n == -1) {
+            perror("read");
+            continue;
+        }
+
+        /* TODO: Get mutex */
+
+        /* Write client_id for Dispatcher */
+        sprintf(client_id_buf, "%d", details.id);
+        write(message_buffer[1], client_id_buf, strlen(buf));
+
+        /* Write what we've read as long as there is something to read */
+        do {
             write(message_buffer[1], buf, n);
-            /* TODO: Free mutex */
-        }
-        if (n < 0) {
-            fprintf(stderr, "ERROR: read\n");
-            break;
+        } while ((n = read(details.sockid, buf, BUF_LEN)) > 0); // TODO: we are blocking here, change socket details to make it non blocking?
+        if (n == -1) {
+            perror("read");
+            continue;
         }
+
+        /* TODO: Free mutex */
     }
 
     pthread_exit(0);