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实现一个简单的服务端推方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...下去，从Redis的角度看，Nginx是客户端，而客户端的可用端口数量是有限的，这就意味着一台Nginx至多只能建立六万多个连接（net.ipv4.ip_local_port_range），有点儿少。
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当然，本文的描述只是沧海一粟，还有很多技术可供选择，...
Best way to create unique token in Rails?
...s Railscast on beta invitations. This produces a 40 character alphanumeric string.
Digest::SHA1.hexdigest([Time.now, rand].join)
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Difference between \n and \r?
...al results in this output NOPdefghijlm. The \r (carriage return) in the string results in the cursor moving to the beginning of the line (carriage) and the characters following the \r (i.e. "NOP") overwrite what was previously there (i.e. the "abc")! You can achieve similar "carriage movement" wi...
C++ 通过主机名/域名获取IP - C/C++ - 清泛网 - 专注C/C++及内核技术
...中用到Winsock API 函数，都要用到 Ws2_32.lib
void GetHostIP(char *szIPAddr)
{
WSADATA wsaData;
char name[155]; //定义用于存放获得主机名的变量
char *ip; //定义IP地址变量
PHOSTENT hostinfo;
//调用MAKEWORD()获得Winsocl版本的正确值...
Maximum length of the textual representation of an IPv6 address?
...ngth for client ip address") - Quote: "For IPv4 mapped IPv6 addresses, the string can be longer than 39 characters.". It says that an "IPv4-mapped IPv6" is 45 characters and is in the format "NNNN:NNNN:NNNN:NNNN:NNNN:NNNN:192.168.158.190". The maximum should therefore be 45 characters. The answer at...
Validating IPv4 addresses with regexp
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@PriteshAcharya Works fine over here.
– Kid Diamond
Mar 15 '18 at 13:27
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What is array to pointer decay?
... the operand of the sizeof operator or the unary & operator, or is a
string literal used to initialize an array, an expression that has type ‘‘array of type’’ is
converted to an expression with type ‘‘pointer to type’’ that points to the initial element of
the array object ...
不同品牌的防火墙组成高可靠性集群 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...设定不同的流量走不同的路径。或者相同的流量从不通的端口流出。做到负载均衡。
而我的的要求是相同的流量走相同的口，而相同的口里面有两个可用路由。
Linux 默认还是只认第一条匹配的路由。
后来想想这个根...
windows版 svn 服务器搭建及总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...问题了，去/etc/sysconfig/iptables 设置一下，打开默认的3690端口就可以了
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在myeclipse 8.5中使用subeclipse插件的若干问题：
貌似 插件的同...
Which MySQL datatype to use for an IP address? [duplicate]
...r conversion:
'INSERT INTO `table` (`ipv6`) VALUES ("'.mysqli_real_escape_string(inet_pton('2001:4860:a005::68')).'")'
'SELECT `ipv6` FROM `table`'
$ipv6 = inet_pton($row['ipv6']);
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