C# 我的互联网接入IP是什么
我的电脑中安装了两个lan卡。一个用于internet连接,另一个用于与客户端计算机共享internet。我正在使用以下代码获取我的IP:C# 我的互联网接入IP是什么,c#,.net,dns,C#,.net,Dns,我的电脑中安装了两个lan卡。一个用于internet连接,另一个用于与客户端计算机共享internet。我正在使用以下代码获取我的IP: IPHostEntry HosyEntry = Dns.GetHostEntry((Dns.GetHostName())); foreach (IPAddress ip in HosyEntry.AddressList) { trackingIp = ip.ToString(); textBox1.Text += trackingIp + "
IPHostEntry HosyEntry = Dns.GetHostEntry((Dns.GetHostName()));
foreach (IPAddress ip in HosyEntry.AddressList)
{
trackingIp = ip.ToString();
textBox1.Text += trackingIp + ",";
}
如何找到我的internet连接IP(我不想通过文本处理)中的哪一个?您可以使用它回显您的IP。获取此信息的最佳方法是使用WMI,此程序输出为网络目标“0.0.0”注册的网络适配器的IP地址,这就是“不是我的网络”,也就是“互联网”(注:我不是网络专家,所以这可能不完全正确)
嗯。我写了两个方法 第一种方法速度更快,但需要使用套接字。 它尝试使用每个本地IP连接到远程主机 第二种方法比较慢,并且没有使用套接字。它连接到远程主机(获取响应,浪费一些流量),并在活动连接表中查找本地IP 代码是草稿,请仔细检查
namespace ConsoleApplication1
{
using System;
using System.Collections.Generic;
using System.Net;
using System.Net.NetworkInformation;
using System.Net.Sockets;
class Program
{
public static List<IPAddress> GetInternetIPAddressUsingSocket(string internetHostName, int port)
{
// get remote host IP. Will throw SocketExeption on invalid hosts
IPHostEntry remoteHostEntry = Dns.GetHostEntry(internetHostName);
IPEndPoint remoteEndpoint = new IPEndPoint(remoteHostEntry.AddressList[0], port);
// Get all locals IP
IPHostEntry hostEntry = Dns.GetHostEntry(Dns.GetHostName());
var internetIPs = new List<IPAddress>();
// try to connect using each IP
foreach (IPAddress ip in hostEntry.AddressList) {
IPEndPoint localEndpoint = new IPEndPoint(ip, 80);
bool endpointIsOK = true;
try {
using (Socket socket = new Socket(localEndpoint.Address.AddressFamily, SocketType.Stream, ProtocolType.Tcp)) {
socket.Connect(remoteEndpoint);
}
}
catch (Exception) {
endpointIsOK = false;
}
if (endpointIsOK) {
internetIPs.Add(ip); // or you can return first IP that was found as single result.
}
}
return internetIPs;
}
public static HashSet <IPAddress> GetInternetIPAddress(string internetHostName)
{
// get remote IPs
IPHostEntry remoteMachineHostEntry = Dns.GetHostEntry(internetHostName);
var internetIPs = new HashSet<IPAddress>();
// connect and search for local IP
WebRequest request = HttpWebRequest.Create("http://" + internetHostName);
using (WebResponse response = request.GetResponse()) {
IPGlobalProperties properties = IPGlobalProperties.GetIPGlobalProperties();
TcpConnectionInformation[] connections = properties.GetActiveTcpConnections();
response.Close();
foreach (TcpConnectionInformation t in connections) {
if (t.State != TcpState.Established) {
continue;
}
bool isEndpointFound = false;
foreach (IPAddress ip in remoteMachineHostEntry.AddressList) {
if (ip.Equals(t.RemoteEndPoint.Address)) {
isEndpointFound = true;
break;
}
}
if (isEndpointFound) {
internetIPs.Add(t.LocalEndPoint.Address);
}
}
}
return internetIPs;
}
static void Main(string[] args)
{
List<IPAddress> internetIP = GetInternetIPAddressUsingSocket("google.com", 80);
foreach (IPAddress ip in internetIP) {
Console.WriteLine(ip);
}
Console.WriteLine("======");
HashSet<IPAddress> internetIP2 = GetInternetIPAddress("google.com");
foreach (IPAddress ip in internetIP2) {
Console.WriteLine(ip);
}
Console.WriteLine("Press any key");
Console.ReadKey(true);
}
}
}
命名空间控制台应用程序1
{
使用制度;
使用System.Collections.Generic;
Net系统;
使用System.Net.NetworkInformation;
使用System.Net.Sockets;
班级计划
{
公共静态列表GetInternetIPAddressUsingSocket(字符串internetHostName,int-port)
{
//获取远程主机IP。将在无效主机上抛出SocketExection
IPHostEntry remoteHostEntry=Dns.GetHostEntry(internetHostName);
IPEndPoint remoteEndpoint=新IPEndPoint(remoteHostEntry.AddressList[0],端口);
//获取所有本地IP
IPHostEntry hostEntry=Dns.GetHostEntry(Dns.GetHostName());
var internetIPs=新列表();
//尝试使用每个IP连接
foreach(hostEntry.AddressList中的ip地址ip){
IPEndPoint localEndpoint=新的IPEndPoint(ip,80);
bool endpointIsOK=true;
试一试{
使用(套接字套接字=新套接字(localEndpoint.Address.AddressFamily,SocketType.Stream,ProtocolType.Tcp)){
socket.Connect(远程端点);
}
}
捕获(例外){
endpointIsOK=false;
}
if(endpointIsOK){
internetIPs.Add(ip);//或者您可以返回作为单个结果找到的第一个ip。
}
}
返回互联网;
}
公共静态哈希集GetInternetIPAddress(字符串internetHostName)
{
//获取远程IP
IPHostEntry remoteMachineHostEntry=Dns.GetHostEntry(internetHostName);
var internetIPs=newhashset();
//连接并搜索本地IP
WebRequest=HttpWebRequest.Create(“http://”+internetHostName);
使用(WebResponse=request.GetResponse()){
IPGlobalProperties属性=IPGlobalProperties.GetIPGlobalProperties();
TcpConnectionInformation[]connections=properties.GetActiveTcpConnections();
response.Close();
foreach(连接中的TcpConnectionInformation t){
如果(t.State!=TcpState.builded){
继续;
}
bool isEndpointFound=false;
foreach(remoteMachineHostEntry.AddressList中的ip地址ip){
if(ip.Equals(t.RemoteEndPoint.Address)){
isEndpointFound=true;
打破
}
}
如果(isEndpointFound){
Add(t.LocalEndPoint.Address);
}
}
}
返回互联网;
}
静态void Main(字符串[]参数)
{
List internetIP=GetInternetIPAddressUsingSocket(“google.com”,80);
foreach(Internet中的ip地址ip){
控制台写入线(ip);
}
Console.WriteLine(“=======”);
HashSet internetIP2=GetInternetIPAddress(“google.com”);
foreach(internetIP2中的ip地址ip){
控制台写入线(ip);
}
Console.WriteLine(“按任意键”);
Console.ReadKey(true);
}
}
}
路由到Internet的NIC有一个网关。这种方法的好处是,您不必对web服务器进行DNS查找或跳转
以下是显示具有有效网关的NIC的本地IP的一些代码:
/// <summary>
/// This utility function displays all the IP addresses that likely route to the Internet.
/// </summary>
public static void DisplayInternetIPAddresses()
{
var sb = new StringBuilder();
// Get a list of all network interfaces (usually one per network card, dialup, and VPN connection)
var networkInterfaces = NetworkInterface.GetAllNetworkInterfaces();
foreach (var network in networkInterfaces)
{
// Read the IP configuration for each network
var properties = network.GetIPProperties();
// Only consider those with valid gateways
var gateways = properties.GatewayAddresses.Select(x => x.Address).Where(
x => !x.Equals(IPAddress.Any) && !x.Equals(IPAddress.None) && !x.Equals(IPAddress.Loopback) &&
!x.Equals(IPAddress.IPv6Any) && !x.Equals(IPAddress.IPv6None) && !x.Equals(IPAddress.IPv6Loopback));
if (gateways.Count() < 1)
continue;
// Each network interface may have multiple IP addresses
foreach (var address in properties.UnicastAddresses)
{
// Comment these next two lines to show IPv6 addresses too
if (address.Address.AddressFamily != AddressFamily.InterNetwork)
continue;
sb.AppendLine(address.Address + " (" + network.Name + ")");
}
}
MessageBox.Show(sb.ToString());
}
//
///此实用程序功能显示可能路由到Internet的所有IP地址。
///
公共静态void DisplayInternetIPAddresses()
{
var sb=新的StringBuilder();
//获取所有网络接口的列表(通常每个网卡、拨号和VPN连接一个)
var networkInterfaces=NetworkInterface.GetAllNetworkInterfaces();
foreach(网络接口中的var网络)
{
//读取每个网络的IP配置
var properties=network.GetIPProperties();
/只考虑那些有效网关
var gateways=properties.GatewayAddresses.Select(x=>x.Address)。其中(
x=>!x.Equals(IPAddress.Any)和&!x.Equals(IPAddress.None)和&!x.Equals(IPAddress.Loopback)&&
!x.Equals(IPAddress.IPv6Any)和&!x.Equals(IPAddress.IPv6None)和&!x.Equals(IPAddress.IPv6Loopback));
if(gateways.Count()<1)
继续;
//每个网络接口可能有多个IP地址
foreach(properties.unicastaddress中的var地址)
{
//注释下两行以显示IPv6地址
if(address.address.AddressFamily!=AddressFamily.InterNetwork)
继续;
(某人)
/// <summary>
/// This utility function displays all the IP addresses that likely route to the Internet.
/// </summary>
public static void DisplayInternetIPAddresses()
{
var sb = new StringBuilder();
// Get a list of all network interfaces (usually one per network card, dialup, and VPN connection)
var networkInterfaces = NetworkInterface.GetAllNetworkInterfaces();
foreach (var network in networkInterfaces)
{
// Read the IP configuration for each network
var properties = network.GetIPProperties();
// Only consider those with valid gateways
var gateways = properties.GatewayAddresses.Select(x => x.Address).Where(
x => !x.Equals(IPAddress.Any) && !x.Equals(IPAddress.None) && !x.Equals(IPAddress.Loopback) &&
!x.Equals(IPAddress.IPv6Any) && !x.Equals(IPAddress.IPv6None) && !x.Equals(IPAddress.IPv6Loopback));
if (gateways.Count() < 1)
continue;
// Each network interface may have multiple IP addresses
foreach (var address in properties.UnicastAddresses)
{
// Comment these next two lines to show IPv6 addresses too
if (address.Address.AddressFamily != AddressFamily.InterNetwork)
continue;
sb.AppendLine(address.Address + " (" + network.Name + ")");
}
}
MessageBox.Show(sb.ToString());
}