这是我的代理代码。
[Runtime.InteropServices.DllImport("wininet.dll", SetLastError = true)]
private static bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int lpdwBufferLength);
public struct Struct_INTERNET_PROXY_INFO
{
public int dwAccessType;
public IntPtr proxy;
public IntPtr proxyBypass;
}
private void UseProxy(string strProxy)
{
const int INTERNET_OPTION_PROXY = 38;
const int INTERNET_OPEN_TYPE_PROXY = 3;
Struct_INTERNET_PROXY_INFO struct_IPI = default(Struct_INTERNET_PROXY_INFO);
struct_IPI.dwAccessType = INTERNET_OPEN_TYPE_PROXY;
struct_IPI.proxy = Marshal.StringToHGlobalAnsi(strProxy);
struct_IPI.proxyBypass = Marshal.StringToHGlobalAnsi("local");
IntPtr intptrStruct = Marshal.AllocCoTaskMem(Marshal.SizeOf(struct_IPI));
Marshal.StructureToPtr(struct_IPI, intptrStruct, true);
bool iReturn = InternetSetOption(IntPtr.Zero, INTERNET_OPTION_PROXY, intptrStruct, System.Runtime.InteropServices.Marshal.SizeOf(struct_IPI));
}
private void Button1_Click(System.Object sender, System.EventArgs e)
{
Label4.Text = (TextBox1.Text + ":" + TextBox2.Text);
}
此代码适用于应用程序的窗口。我尝试在控制台应用程序中使用它并检查我的IP但它不起作用。以下是我在控制台应用中使用它的方法，
static void Main()
{
Console.WriteLine("Ip before Proxy /r/n");
HTTPGet req = new HTTPGet();
req.Request("http://checkip.dyndns.org");
string[] a = req.ResponseBody.Split(':');
string a2 = a[1].Substring(1);
string[] a3 = a2.Split('<');
string a4 = a3[0];
Console.WriteLine(a4);
UseProxy("219.93.183.106:8080");
Console.WriteLine("Ip after Proxy /r/n");
HTTPGet req1 = new HTTPGet();
req1.Request("http://checkip.dyndns.org");
string[] a1 = req1.ResponseBody.Split(':');
string a21 = a1[1].Substring(1);
string[] a31 = a21.Split('<');
string a41 = a31[0];
Console.WriteLine(a41);
Console.ReadLine();
}
HTTPGet是我来自的一个类：Get public/external IP address?
我希望代理能够与控制台应用程序一起使用。我不确定是什么问题 我还将运行多个程序实例，所以我希望每个控制台使用一个代理，它应该只影响控制台而不是整个计算机的浏览。 代理将无法进行身份验证。
这是我自己的HTTPBase类，它处理整个应用程序的所有http请求，
namespace ConsoleApplication1
{
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using System.Net;
using System.Web;
using System.Runtime.InteropServices;
public class HTTPBase
{
private CookieContainer _cookies = new CookieContainer();
private string _lasturl;
private int _retries = 3;
private string _useragent = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; FunWebProducts; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506; InfoPath.1)";
public HTTPBase()
{
ServicePointManager.UseNagleAlgorithm = false;
ServicePointManager.Expect100Continue = false;
}
public void ClearCookies()
{
this._cookies = new CookieContainer();
}
public static string encode(string str)
{
// return System.Net.WebUtility.HtmlEncode(str);
return HttpUtility.UrlEncode(str);
//return str;
}
public string get(string url)
{
for (int i = 0; i < this._retries; i++)
{
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.UserAgent = this._useragent;
request.CookieContainer = this._cookies;
if (this._lasturl != null)
{
request.Referer = this._lasturl;
}
else
{
request.Referer = url;
}
this._lasturl = url;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
using (Stream stream = response.GetResponseStream())
{
using (StreamReader reader = new StreamReader(stream))
{
return reader.ReadToEnd();
}
}
}
catch (Exception exception)
{
if ((i + 1) == this._retries)
{
throw exception;
}
}
}
throw new Exception("Failed");
}
public string post(string url, string postdata)
{
for (int i = 0; i < this._retries; i++)
{
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.ContentType = "application/x-www-form-urlencoded";
if (this._lasturl != null)
{
request.Referer = this._lasturl;
}
else
{
request.Referer = url;
}
this._lasturl = url;
request.Method = "POST";
request.UserAgent = this._useragent;
request.CookieContainer = this._cookies;
request.ContentLength = postdata.Length;
using (Stream stream = request.GetRequestStream())
{
using (StreamWriter writer = new StreamWriter(stream))
{
writer.Write(postdata);
}
}
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
using (Stream stream2 = response.GetResponseStream())
{
using (StreamReader reader = new StreamReader(stream2))
{
return reader.ReadToEnd();
}
}
}
catch (Exception exception)
{
if (this._lasturl.Contains("youtuberender.php"))
{
return "bypassing youtube error";
}
if ((i + 1) == this._retries)
{
throw exception;
}
}
}
throw new Exception("Failed");
}
public string post(string url, string postdata, string referer)
{
for (int i = 0; i < this._retries; i++)
{
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.ContentType = "application/x-www-form-urlencoded";
request.Referer = referer;
this._lasturl = url;
request.Method = "POST";
request.UserAgent = this._useragent;
request.CookieContainer = this._cookies;
request.ContentLength = postdata.Length;
using (Stream stream = request.GetRequestStream())
{
using (StreamWriter writer = new StreamWriter(stream))
{
writer.Write(postdata);
}
}
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
using (Stream stream2 = response.GetResponseStream())
{
using (StreamReader reader = new StreamReader(stream2))
{
return reader.ReadToEnd();
}
}
}
catch (Exception exception)
{
if (this._lasturl.Contains("youtube.com"))
{
return "bypassing youtube error";
}
if ((i + 1) == this._retries)
{
throw exception;
}
}
}
throw new Exception("Failed");
}
public string XmlHttpRequest(string urlString, string xmlContent)
{
string str = null;
HttpWebRequest request = null;
HttpWebResponse response = null;
request = (HttpWebRequest)WebRequest.Create(urlString);
try
{
byte[] bytes = Encoding.ASCII.GetBytes(xmlContent);
request.Method = "POST";
request.UserAgent = this._useragent;
request.CookieContainer = this._cookies;
request.ContentLength = bytes.Length;
request.Headers.Add("X-Requested-With", "XMLHttpRequest");
request.ContentType = "application/x-www-form-urlencoded; charset=UTF-8";
using (Stream stream = request.GetRequestStream())
{
stream.Write(bytes, 0, bytes.Length);
stream.Close();
}
response = (HttpWebResponse)request.GetResponse();
if (response.StatusCode == HttpStatusCode.OK)
{
using (Stream stream2 = response.GetResponseStream())
{
using (StreamReader reader = new StreamReader(stream2))
{
str = reader.ReadToEnd();
}
}
}
response.Close();
}
catch (WebException exception)
{
throw new Exception(exception.Message);
}
catch (Exception exception2)
{
throw new Exception(exception2.Message);
}
finally
{
response.Close();
response = null;
request = null;
}
return str;
}
public string UserAgent
{
get
{
return this._useragent;
}
set
{
this._useragent = value;
}
}
}
}
所以我希望能够在此代码中添加代理。我将从主窗体传递一个变量，它将具有代理：端口格式，我希望此代码使用代理。我是这些代理事物的新手并且有一些混淆。 我在VS 12中使用net framework 4.0。
答案 0 :(得分：0)
您可以使用WebRequest.DefaultWebProxy
WebRequest.DefaultWebProxy = null;
using (WebClient wc = new WebClient())
{
string html = wc.DownloadString("http://checkip.dyndns.org");
Console.WriteLine(XDocument.Parse(html).Root.Element("body").Value);
}
WebRequest.DefaultWebProxy = new WebProxy("219.93.183.106", 8080);
using (WebClient wc = new WebClient())
{
string html = wc.DownloadString("http://checkip.dyndns.org");
Console.WriteLine(XDocument.Parse(html).Root.Element("body").Value);
}
或者您可以明确设置代理：
using (WebClient wc = new WebClient { Proxy = null })
{
string html = wc.DownloadString("http://checkip.dyndns.org");
Console.WriteLine(XDocument.Parse(html).Root.Element("body").Value);
}
using (WebClient wc = new WebClient { Proxy = new WebProxy("219.93.183.106", 8080) })
{
string html = wc.DownloadString("http://checkip.dyndns.org");
Console.WriteLine(XDocument.Parse(html).Root.Element("body").Value);
}