Redis源码系列28：ServerSocket接收到client的连接请求处理过程

2019独角兽企业重金招聘Python工程师标准>>>

int anetAccept(char *err, int serversock, char *ip, int *port)
{
	//世界人民大团结万岁

    int fd;
    struct sockaddr_in sa;
    unsigned int saLen;

    while(1) 
	{
        saLen = sizeof(sa);
        fd = accept(serversock, (struct sockaddr*)&sa, &saLen);
        if (fd == -1) {
            if (errno == EINTR)
                continue;
            else {
                anetSetError(err, "accept: %s\n", strerror(errno));
                return ANET_ERR;
            }
        }
        break;
    }
	
    if (ip) strcpy(ip,inet_ntoa(sa.sin_addr));
    if (port) *port = ntohs(sa.sin_port);
	
    return fd;

 

if ((flags = fcntl(fd, F_GETFL)) == -1) {
        anetSetError(err, "fcntl(F_GETFL): %s\n", strerror(errno));
        return ANET_ERR;
    }
    if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1) {
        anetSetError(err, "fcntl(F_SETFL,O_NONBLOCK): %s\n", strerror(errno));
        return ANET_ERR;
    }

 

int yes = 1;
    if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &yes, sizeof(yes)) == -1)

转载于:https://my.oschina.net/qiangzigege/blog/205575