Question

如何通过指定的WebRequest和proxy server修改以下代码以发送port number？

Dim Request As HttpWebRequest = WebRequest.Create(url)
Request.Method = "POST"
Request.ContentType = "application/x-www-form-urlencoded"
Using writer As StreamWriter = New StreamWriter(Request.GetRequestStream())
    writer.Write(params)
End Using

Answer 1

使用MSDN中的代码：

Dim myProxy As New WebProxy()
myProxy.Address = New Uri("proxyAddress")
myProxy.Credentials = New NetworkCredential("username", "password")
myWebRequest.Proxy = myProxy

Answer 2

WebRequest对象具有IWebProxy的“Proxy”属性。您应该能够将其分配为使用指定的代理。

Request.Proxy = New WebProxy("http://myproxy.com:8080");

如果代理不是匿名的，则需要指定WebProxy对象的凭据。

Answer 3

例如，如果您的Web服务器需要通过http://255.255.1.1:8080，

的代理服务器

Dim Request As HttpWebRequest = WebRequest.Create(url)
 'Create the proxy class instance
Dim prxy as New WebProxy("http://255.255.1.1:8080")

 'Specify that the HttpWebRequest should use the proxy server
Request .Proxy = prxy

Request.Method = "POST"
Request.ContentType = "application/x-www-form-urlencoded"
Using writer As StreamWriter = New StreamWriter(Request.GetRequestStream())
writer.Write(params)
End Using

如何通过代理发送WebRequest？

3 个答案: