AsyncSocket是不是每发送一消息就需要实例化一次啊？？然后建立连接啊？

#pragma mark - 连接到服务器
- (void)connectToHost
{
    if (!_socket) {
        _socket = [[AsyncSocket alloc]initWithDelegate:self];
        [_socket connectToHost:SERVER_PATH_SOCKET onPort:50000 withTimeout:5 error:nil];
    }
}


#pragma mark - 断开连接
- (void)socketDisconnect
{
    //断开连接时候一定要清空socket
    [_socket disconnect];
    _socket = nil;
}
#pragma mark - 返回数据
- (void)onSocket:(AsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag
{
    NSLog(@"data is %@", data);//返回的是二进制
}