[英]Sending HttpWebRequest through a specific network adapter
幾天前,我問了一個關於通過特定網絡適配器發送HttpWebRequest
的問題,有人告訴我使用BindIPEndPointCallback
。 我試過這個:
public static IPEndPoint BindIPEndPointCallback(ServicePoint servicePoint, IPEndPoint remoteEndPoint, int retryCount)
{
List<IPEndPoint> ipep = new List<IPEndPoint>();
foreach (var i in System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces())
{
foreach (var ua in i.GetIPProperties().UnicastAddresses)
ipep.Add(new IPEndPoint(ua.Address, 0));
}
return new IPEndPoint(ipep[1].Address, ipep[1].Port);
}
private void button1_Click(object sender, EventArgs e)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://whatismyip.com");
request.ServicePoint.BindIPEndPointDelegate = new BindIPEndPoint(BindIPEndPointCallback);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
StreamReader sr = new StreamReader(response.GetResponseStream());
string x = sr.ReadToEnd();
}
但它仍然不起作用。 它通過同一個網絡適配器發送HttpWebRequest
。 還有什么我可以嘗試的嗎?
如果您的本地端點是私有 ip 地址(192.168.50.103 是),您的路由器將將該地址轉換為不同的公共 ip,這就是 whatsmyip 可以看到的地址。
我建議你試試這個例子:
using System;
using System.Net;
class Program
{
public static void Main ()
{
// TODO: Put your ip addresses in this list
var ips = new IPAddress[]
{
IPAddress.Parse("10.0.0.3"),
IPAddress.Parse("192.168.1.7")
};
foreach (var ip in ips)
{
try
{
Console.WriteLine("Request from: " + ip);
var request = (HttpWebRequest)HttpWebRequest.Create("http://ns1.vianett.no/");
request.ServicePoint.BindIPEndPointDelegate = delegate
{
return new IPEndPoint(ip, 0);
};
var response = (HttpWebResponse)request.GetResponse();
Console.WriteLine("Actual IP: " + response.GetResponseHeader("X-YourIP"));
response.Close();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
}
}
底層平台可能支持也可能不支持您嘗試做的事情。
谷歌“強/弱主機模型”。
例如,這是對該主題的一個很好的介紹:
http://technet.microsoft.com/en-us/library/2007.09.cableguy.aspx
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