using System.Net.Http; public static class HttpRequestMessageExtensions { private const string HttpContext = "MS_HttpContext"; private const string RemoteEndpointMessage = "System.ServiceModel.Channels.RemoteEndpointMessageProperty"; p…

public String getIP() { String clientIP = ServletActionContext.getRequest().getHeader("x-forwarded-for"); if (Validator.isNull(clientIP) || "unknown".equalsIgnoreCase(clientIP)) { clientIP = ServletActionContext.getRequest().getHeader(…

虚拟机桥接无法自动获取IP的解决方法 在虚拟机VM里面装了centos系统,网卡选用桥接方式. 刚开始的时候还能自动获取到IP地址,突然有一天IP消失了,再怎么重启都无法获取IP地址.因为之前是可以获取IP,而且 VMware NAT Service 和 VMware DHCP Service 两个已启动,没做任何的改动,所以配置肯定是没问题的.百思不得其解啊!!! 后来检查Edit--Virtual Network Editor...,进去以后看到VMnet0  Bridged Auto-br…

正常的DHCP获取IP的流程(Discover-Offer-Request-Ack): (Discovery)主机端在LAN中发布MAC地址为FF:FF:FF:FF:FF:FF的广播来寻找DHCP服务器. (Offer)DHCP Server对收到的Discovery包进行响应,从尚未出租的IP地址中挑选一个分配给DHCP客户机,向DHCP客户机发送一个包含出租的IP地址和其他设置的DHCP offer提供信息. (Request)根据First Come First Server原则,主机会选…

public static string GetClientIPv4Address() { string ipv4 = String.Empty; foreach (IPAddress ip in Dns.GetHostAddresses(GetClientIP())) { if (ip.AddressFamily.ToString() == "InterNetwork") { ipv4 = ip.ToString(); break; } } if (ipv4 != String.Em…

获取客户端IP地址:: function getIp(){ if(!empty($_SERVER['HTTP_CLIENT_IP'])){ return $_SERVER['HTTP_CLIENT_IP']; }elseif(!empty($_SERVER['HTTP_X_FORVARDED_FOR'])){ return $_SERVER['HTTP_X_FORVARDED_FOR']; }elseif(!empty($_SERVER['REMOTE_ADDR'])){ return $_SE…

两种获取connectionString的方式 1. public static string connectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; <connectionStrings> <add name="ConnectionString" connectionString="Data Sourc…

root@kali:~# service networking restart [....] Running /etc/init.d/networking restart is deprecated because it may not r[warnble some interfaces ... (warning). [....] Reconfiguring network interfaces...Internet Systems Consortium DHCP Client 4.2.2 Co…

DHCP就是动态主机配置协议(Dynamic Host Configuration Protocol),它的目的就是为了减轻TCP/IP网络的规划.管理和维护的负担,解决IP地址空间缺乏问题.这种网络服务有利于对网络中的客户机IP地址进行有效管理. DHCP功能分为两个部份:一个是服务器端,而另一个是客户端(客户端不用安装,windows 9x/2000/xp 在默认情况下都启动DHCP Client服务).DHCP透过“租约”的概念,有效且动态的分配客户端的TCP/IP设定. 路由器DHCP服…

在CentOS配置网卡开机自动获取IP地址: vi /etc/sysconfig/network-scripts/ifcfg-eth0 将 ONBOOT="no" 改为 ONBOOT="yes" 保存后: service network restart 查看IP:ifconfig eth0 然后利用 Oracle VM VirtualBox 的端口转发功能(port forwarding),通过虚拟机的虚拟网卡实现主机与客户机的通信. 打开virtualbox 的设…