by Tair Abdurman (6 Submissions)
Category: Internet/HTML
Compatability: Visual Basic 3.0
Difficulty: Advanced
Date Added: Wed 3rd February 2021
Rating: 
(12 Votes)
Allow retrieve HTML page sources anywhere from web, directly or via proxy server, can access virtual domains. Pure winsock, no any other components used! Wanna know web transactions in deep?
Assumes
'based on HTTP 1.0 - RFC 1945
'see http://www.tair.freeservers.com for more info, details and downloads!
VBcoders'based on HTTP 1.0 - RFC 1945
'see http://www.tair.freeservers.com for more info, details and downloads!
Public JobURL As String
Public ResponseDocument As String
Public StepCount As Long
Public IsProxyUsed As Boolean
Public ServerHostIP As String
Public ServerPort As Long
'------------------------------------------------------------
Dim LocalStepCounter As Long
Dim RequestHeader As String
Dim RequestTemplate As String
'------------------------------------------------------------
Public Sub ActionStartup()
If UCase(Left(JobURL, 7)) <> "HTTP://" Then
MsgBox "Please enter url with http://", vbCritical + vbOK
FrmActionWait.Hide
Unload FrmActionWait
Exit Sub
End If
LocalStepCounter = 0
RequestHeader = ""
RequestTemplate = "GET _$-$_$- HTTP/1.0" & Chr(13) & Chr(10) & _
"Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/x-comet, */*" & Chr(13) & Chr(10) & _
"Accept-Language: en" & Chr(13) & Chr(10) & _
"Accept-Encoding: gzip , deflate" & Chr(13) & Chr(10) & _
"Cache-Control: no-cache" & Chr(13) & Chr(10) & _
"Proxy-Connection: Keep-Alive" & Chr(13) & Chr(10) & _
"User-Agent: SSM Agent 1.0" & Chr(13) & Chr(10) & _
"Host: @$@@$@" & Chr(13) & Chr(10)
pureURL = Right(JobURL, Len(JobURL) - 7)
startPos = InStr(1, pureURL, "/")
If startPos < 1 Then
ServerAddress = pureURL
documentURI = "/"
Else
ServerAddress = Left(pureURL, startPos - 1)
documentURI = Right(pureURL, Len(pureURL) - startPos + 1)
End If
If ServerAddress = "" Or documentURI = "" Then
MsgBox "Unable to detect target page!", vbCritical + vbOK
FrmActionWait.Hide
Unload FrmActionWait
Exit Sub
End If
If IsProxyUsed Then
If ServerHostIP = "" Then
MsgBox "Unable to detect proxy address!", vbCritical + vbOK
FrmActionWait.Hide
Unload FrmActionWait
Exit Sub
End If
RequestHeader = RequestTemplate
RequestHeader = Replace(RequestHeader, "_$-$_$-", JobURL)
Else
ServerHostIP = ServerAddress
ServerPort = 80
RequestHeader = RequestTemplate
RequestHeader = Replace(RequestHeader, "_$-$_$-", documentURI)
End If
Me.Show
RequestHeader = Replace(RequestHeader, "@$@@$@", ServerAddress)
RequestHeader = RequestHeader & Chr(13) & Chr(10)
TxtStatus.Text = "Connecting to server ..."
TxtStatus.Refresh
WS_HTTP.Connect ServerHostIP, ServerPort
End Sub
Private Sub WS_HTTP_Close()
WS_HTTP.Close
TxtStatus.Text = "Transaction completed ..."
TxtStatus.Refresh
Me.Hide
Unload Me
End Sub
Private Sub WS_HTTP_Connect()
WS_HTTP.SendData RequestHeader
TxtStatus.Text = "Connected, try to obtain page ..."
TxtStatus.Refresh
FrmMainWin.TxtResponse.Text = ""
FrmMainWin.TxtResponse.Refresh
End Sub
Private Sub WS_HTTP_DataArrival(ByVal bytesTotal As Long)
Dim tmpString As String
WS_HTTP.GetData tmpString, vbString
FrmMainWin.TxtResponse.Text = FrmMainWin.TxtResponse.Text & tmpString
FrmMainWin.TxtResponse.Refresh
TxtStatus.Text = "Data from server, continue ..."
TxtStatus.Refresh
End Sub
Private Sub WS_HTTP_Error(ByVal Number As Integer, Description As String, ByVal Scode As Long, ByVal Source As String, ByVal HelpFile As String, ByVal HelpContext As Long, CancelDisplay As Boolean)
WS_HTTP.Close
TxtStatus.Text = "Errors occured ..."
TxtStatus.Refresh
Me.Hide
Unload Me
End Sub
