multi-threaded proxy checker having problems
- by Paul
hello everyone, I am trying to create a proxy checker.
This is my first attempt at multithreading and it's not going so well, the threads seem to be waiting for one to complete before initializing the next.
Imports System.Net
Imports System.IO
Imports System.Threading
Public Class Form1
Public sFileName As String
Public srFileReader As System.IO.StreamReader
Public sInputLine As String
Public Class WebCall
Public proxy As String
Public htmlout As String
Public Sub New(ByVal proxy As String)
Me.proxy = proxy
End Sub
Public Event ThreadComplete(ByVal htmlout As String)
Public Sub send()
Dim myWebRequest As HttpWebRequest = CType(WebRequest.Create("http://www.myserver.com/ip.php"), HttpWebRequest)
myWebRequest.Proxy = New WebProxy(proxy, False)
Try
Dim myWebResponse As HttpWebResponse = CType(myWebRequest.GetResponse(), HttpWebResponse)
Dim loResponseStream As StreamReader = New StreamReader(myWebResponse.GetResponseStream())
htmlout = loResponseStream.ReadToEnd()
Debug.WriteLine("Finished - " & htmlout)
RaiseEvent ThreadComplete(htmlout)
Catch ex As WebException
If (ex.Status = WebExceptionStatus.ConnectFailure) Then
End If
Debug.WriteLine("Failed - " & proxy)
End Try
End Sub
End Class
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim proxy As String
Dim webArray As New ArrayList()
Dim n As Integer
For n = 0 To 2
proxy = srFileReader.ReadLine()
webArray.Add(New WebCall(proxy))
Next
Dim w As WebCall
For Each w In webArray
Threading.ThreadPool.QueueUserWorkItem(New WaitCallback(AddressOf w.send), w)
Next w
End Sub
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
srFileReader = System.IO.File.OpenText("proxies.txt")
End Sub
End Class
