Finish ACKs

client.c

@@ -278,9 +278,13 @@ int main(int argc, char *argv[]) {
     }
 
     switch (incoming.mtype) {
-    case Message:
+    case Message: {
       printf("%s: %s\n", incoming.sender, incoming.message);
+      msgbuf_t ack = {.mtype = Signal, .stype = ACK_DELIVERED, .command = ""};
+      strncpy(ack.command, incoming.command, COMMAND_LENGTH);
+      send(server_queue_id, &ack);
       break;
+    }
     case List: {
       // Check the command field for the list type
       if (strncmp(incoming.command, "active", COMMAND_LENGTH) == 0) {
@@ -316,14 +320,14 @@ int main(int argc, char *argv[]) {
     case Signal:
       // Tell the user if the previous message was accepted and/or delivered
       if (incoming.stype == ACK_ACCEPTED) {
-        printf("Message sent successfully.\n");
+        printf("[Sent]\n");
       } else if (incoming.stype == ACK_DELIVERED) {
-        printf("Message delivered to %s.\n", incoming.sender);
+        printf("[Delivered: %s]\n", incoming.sender);
       } else if (incoming.stype == ERR_NOT_FOUND) {
-        printf("Your message could not be delivered: User not found.\n");
+        printf("[Error: User not found]\n");
       } else {
         // Display whatever if I forgot to handle something
-        printf("Unhandled signal - code %d.\n", incoming.stype);
+        printf("[Error: Code %d]\n", incoming.stype);
       }
       break;
     case JoinGroup: