sending WHY2_CHAT_CODE_LIST_SERVER as a code

not sure if it will work (there's no way for me to test it rn...)

src/chat/misc.c

@@ -720,7 +720,7 @@ void *why2_communicate_thread(void *arg)
                     why2_node_t *buffer = head;
                     connection_node_t value_buffer;
                     unsigned long alloc_size = 0;
-                    char *append_buffer;
+                    size_t last_size = 0;
 
                     //COUNT REQUIRED MESSAGE ALLOCATION SIZE
                     do
@@ -731,29 +731,23 @@ void *why2_communicate_thread(void *arg)
                         buffer = buffer -> next; //ITER
                     } while (buffer != NULL);
 
-                    char *message = why2_calloc(strlen(WHY2_CHAT_CODE_LIST_SERVER) + alloc_size + 2, sizeof(char));
+                    char *message = why2_calloc(alloc_size + 1, sizeof(char));
                     buffer = head; //RESET
 
-                    sprintf(message, WHY2_CHAT_CODE_LIST_SERVER); //SET CODE
-
                     //FILL THE message
                     do
                     {
                         value_buffer = *(connection_node_t*) buffer -> value;
 
-                        append_buffer = why2_malloc(strlen(value_buffer.username) + why2_count_int_length(value_buffer.id) + 3); //ALLOCATE THE BUFFER
+                        sprintf(message + last_size, "%s;%ld;", value_buffer.username, value_buffer.id); //APPEND
-                        sprintf(append_buffer, ";%s;%ld", value_buffer.username, value_buffer.id); //FILL THE BUFFER
 
-                        strcat(message, append_buffer); //JOIN THE BUFFER TO OUTPUT message
+                        last_size = strlen(message);
 
-                        why2_deallocate(append_buffer); //DEALLOCATION
                         buffer = buffer -> next; //ITER
                     } while (buffer != NULL);
 
-                    strcat(message, ";");
-
                     //SEND
-                    send_socket_deallocate(message, why2_chat_server_config("server_username"), connection);
+                    send_socket_code_deallocate(message, why2_chat_server_config("server_username"), connection, WHY2_CHAT_CODE_LIST_SERVER);
 
                     //DEALLOCATION
                     why2_deallocate(message);