Hot Jupiters Smarten Search For Other Earths Scientists are looking for Earth like planets around other stars. But one way to limit the search can be to figure out where an Earth-like planet cannot exist and eliminate those types of systems. In a new…
To understand the backlog argument, we must realize that for a given listening socket, the kernel maintains two queues :要明白backlog参数的含义,我们必须明白对于一个listening socket,kernel维护者两个队列: 1.An incomplete connection queue, which contains an entry for each SYN t…
mysql 主从复制问题整理 问题: 1045 | error connecting to master 'slave_user@192.168.0.75:3306' - retry-time: 6 原因: 其实是MySQL的验证没有通过 解决: 主要是主从服务器上的密码不正确导致.需要检查master和slave中的配置, master GRANT REPLICATION SLAVE ON *.* TO 'slave_user'@'%' IDENTIFIED BY ''; s…
listen函数仅仅由TCP服务器调用,它做2件事: 1)当socket函数创建一个套接字时,它被假设为一个主动套接字,也就是说,它是一个将调用connect发起连接的客户套接字 listen函数把一个未连接的套接字转换成一个被动套接字,指示内核应接受指向该套接字的连接请求 调用listen导致套接字从CLOSED状态转换到LISTEN状态 2)本函数的第二个参数规定了内核应该为相应套接字排队的最大连接个数 int listen ( int sockfd, int backlog); 本函数在调…
Problem Description It is the king's birthday before the military parade . The ministers prepared a rectangle cake of size n×m(1≤n,m≤10000) . The king plans to cut the cake himself. But he has a strange habit of cutting cakes. Each time, he will cut…
