objective-c - EXC_BREAKPOINT的问题

Question

主线程报EXC_BREAKPOINT，定位在一个delegate，看了半天没有错误，

dispatch_async(_callbackQueue, ^{
    [self.delegate webSocket:self didReceiveMessage:message]; // 这里
});

请问各位大概是什么问题导致的？ 是重复释放内存了吗？

Answer 1

This is my problem. The problem is that after logging out and logging in again, I did not clean up the previous delegate and close the socket, which caused conflicts in the queue.