private static string GetPublicIpAddress()
{
    using (var client = new WebClient())
    {
       return client.DownloadString("http://ifconfig.me").Replace("
", "");
    }
}

当我 de笑时,我利用下面建造外部可打电话的URL,但你只能使用头两条线,使你的公共IP:

public static string ExternalAction(this UrlHelper helper, string actionName, string controllerName = null, RouteValueDictionary routeValues = null, string protocol = null)
{
#if DEBUG
    var client = new HttpClient();
    var ipAddress = client.GetStringAsync("http://ipecho.net/plain").Result; 
    // above 2 lines should do it..
    var route = UrlHelper.GenerateUrl(null, actionName, controllerName, routeValues, helper.RouteCollection, helper.RequestContext, true); 
    if (route == null)
    {
        return route;
    }
    if (string.IsNullOrEmpty(protocol) && string.IsNullOrEmpty(ipAddress))
    {
        return route;
    }
    var url = HttpContext.Current.Request.Url;
    protocol = !string.IsNullOrWhiteSpace(protocol) ? protocol : Uri.UriSchemeHttp;
    return string.Concat(protocol, Uri.SchemeDelimiter, ipAddress, route);
#else
    helper.Action(action, null, null, HttpContext.Current.Request.Url.Scheme)
#endif
}

页: 1

public static string PublicIPAddress()
{
    string uri = "http://checkip.dyndns.org/";
    string ip = String.Empty;

    using (var client = new HttpClient())
    {
        var result = client.GetAsync(uri).Result.Content.ReadAsStringAsync().Result;

        ip = result.Split( : )[1].Split( < )[0];
    }

    return ip;
}

www.un.org/Depts/DGACM/index_spanish.htm 最佳答案一见。

尽快解决边远问题。 你们必须使用下载器,或在你的电脑上建立服务器。

采用这一简单法典的倒数部分(建议)是,需要3至5秒才能获得你的远程IP地址,因为网上广播在开始时总是需要3至5秒才能检查你的代理环境。

 public static string GetIP()
 {
            string externalIP = "";
            externalIP = new WebClient().DownloadString("http://checkip.dyndns.org/");
            externalIP = (new Regex(@"d{1,3}.d{1,3}.d{1,3}.d{1,3}"))
                                           .Matches(externalIP)[0].ToString();
            return externalIP;
 }

这里是我是如何确定的(第一次需要3至5秒),但此后,根据您的联系,我总是在0至2秒的时间里获得你的远程IP地址。

public static WebClient webclient = new WebClient();
public static string GetIP()
{
    string externalIP = "";
    externalIP = webclient.DownloadString("http://checkip.dyndns.org/");
    externalIP = (new Regex(@"d{1,3}.d{1,3}.d{1,3}.d{1,3}"))
                                   .Matches(externalIP)[0].ToString();
    return externalIP;
}

缩略语 URLs:

    public static string GetExternalIPAddress()
    {
        string result = string.Empty;

        string[] checkIPUrl =
        {
            "https://ipinfo.io/ip",
            "https://checkip.amazonaws.com/",
            "https://api.ipify.org",
            "https://icanhazip.com",
            "https://wtfismyip.com/text"
        };

        using (var client = new WebClient())
        {
            client.Headers["User-Agent"] = "Mozilla/4.0 (Compatible; Windows NT 5.1; MSIE 6.0) " +
                "(compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";

            foreach (var url in checkIPUrl)
            {
                try
                {
                    result = client.DownloadString(url);
                }
                catch
                {
                }

                if (!string.IsNullOrEmpty(result))
                    break;
            }
        }

        return result.Replace("
", "").Trim();
    }
}

您可使用Telnet,在方案上查询广域网的路由器。

www.un.org/Depts/DGACM/index_spanish.htm Telnet part

Telnet部分可通过以下方式实现:,作为向路主发送电话线,并接受路由人的回应的APIC。 其余的答复假定,你以某种方式设立,以派遣一个Telnet指挥所,并在你的法典中收回答复。

connection list

  RESP: 3947  17.110.226. 13:443       146.200.253. 16:60642     [R..A] Internet      6 tcp   128
<------------------  39  -------------><--  WAN IP -->

private bool getWanIp(ref string wanIP)
{
    string routerResponse = sendRouterCommand("connection list");

    return (getWanIpFromRouterResponse(routerResponse, out wanIP));
}

private bool getWanIpFromRouterResponse(string routerResponse, out string ipResult)
{
    ipResult = null;
    string[] responseLines = routerResponse.Split(new char[] {  
  });

    //  RESP: 3947  17.110.226. 13:443       146.200.253. 16:60642     [R..A] Internet      6 tcp   128
    //<------------------  39  -------------><---  15   --->

    const int offset = 39, length = 15;

    foreach (string line in responseLines)
    {
        if (line.Length > (offset + length) && line.Contains("Internet"))
        {
            ipResult = line.Substring(39, 15).Replace(" ", "");
            return true;
        }
    }

    return false;
}

大部分答复都提到“http://checkip.dyndns.org” rel=“nofollow”http://checkip.dyndns.org。 对我们来说,它做得很好。 我们面临很多时间。 如果你的方案取决于IP的检测,它确实令人不安。

作为解决办法,我们在桌面应用中采用以下方法:

    // Returns external/public ip
    protected string GetExternalIP()
    {
        try
        {
            using (MyWebClient client = new MyWebClient())
            {
                client.Headers["User-Agent"] =
                "Mozilla/4.0 (Compatible; Windows NT 5.1; MSIE 6.0) " +
                "(compatible; MSIE 6.0; Windows NT 5.1; " +
                ".NET CLR 1.1.4322; .NET CLR 2.0.50727)";

                try
                {
                    byte[] arr = client.DownloadData("http://checkip.amazonaws.com/");

                    string response = System.Text.Encoding.UTF8.GetString(arr);

                    return response.Trim();
                }
                catch (WebException ex)
                {
                    // Reproduce timeout: http://checkip.amazonaws.com:81/

                    // trying with another site
                    try
                    {
                        byte[] arr = client.DownloadData("http://icanhazip.com/");

                        string response = System.Text.Encoding.UTF8.GetString(arr);

                        return response.Trim();
                    }
                    catch (WebException exc)
                    { return "Undefined"; }
                }
            }
        }
        catch (Exception ex)
        {
            // TODO: Log trace
            return "Undefined";
        }
    }

良好的部分是,这两个地点都以平原形式返回IP。 避免了大规模行动。

核对<代码>副渔获物/编码>中的逻辑 条款 停泊点击一个非现有港口。 例:

https://api.ipification.org” rel=“nofollow> IPIFY AP是冰,因为它可以在原始文本和JSON中做出反应。 它还可以进行呼吁等。 唯一的问题是在IPv4,而不是6中。

public string GetClientIp() {
    var ipAddress = string.Empty;
    if (System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] != null) {
        ipAddress = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString();
    } else if (System.Web.HttpContext.Current.Request.ServerVariables["HTTP_CLIENT_IP"] != null &&
               System.Web.HttpContext.Current.Request.ServerVariables["HTTP_CLIENT_IP"].Length != 0) {
        ipAddress = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_CLIENT_IP"];
    } else if (System.Web.HttpContext.Current.Request.UserHostAddress.Length != 0) {
        ipAddress = System.Web.HttpContext.Current.Request.UserHostName;
    }
    return ipAddress;
} 

完美

using System.Net;

private string GetWorldIP()
{
    String url = "http://bot.whatismyipaddress.com/";
    String result = null;

    try
    {
        WebClient client = new WebClient();
        result = client.DownloadString(url);
        return result;
    }
    catch (Exception ex) { return "127.0.0.1"; }
}

使用回落作为后退,以致事情不会致命地中断。

I had almost the same as Jesper, only I reused the webclient and disposed it correctly. Also I cleaned up some responses by removing the extra at the end.

    private static IPAddress GetExternalIp () {
      using (WebClient client = new WebClient()) {
        List<String> hosts = new List<String>();
        hosts.Add("https://icanhazip.com");
        hosts.Add("https://api.ipify.org");
        hosts.Add("https://ipinfo.io/ip");
        hosts.Add("https://wtfismyip.com/text");
        hosts.Add("https://checkip.amazonaws.com/");
        hosts.Add("https://bot.whatismyipaddress.com/");
        hosts.Add("https://ipecho.net/plain");
        foreach (String host in hosts) {
          try {
            String ipAdressString = client.DownloadString(host);
            ipAdressString = ipAdressString.Replace("
", "");
            return IPAddress.Parse(ipAdressString);
          } catch {
          }
        }
      }
      return null;
    }

WebClient, WebRequest and many other are obsolete, consider using it:

public static IPAddress? GetExternalIP ()
{
    try
    {
        using (var client = new HttpClient())
            return IPAddress.Parse(client.GetAsync("http://ipinfo.io/ip").Result.Content.ReadAsStringAsync().Result);
    }
    catch (Exception ex)
    {
        return null;
    }
}

晚年

    private static string GetLocalAddress()
    {
        var host = Dns.GetHostEntry(Dns.GetHostName());
        foreach (var ip in host.AddressList.Where(ip => ip.AddressFamily == AddressFamily.InterNetwork))
        {
            if (!string.IsNullOrEmpty(ip.ToString())) return ip.ToString();
        }
        return string.Empty;
    }