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VBScript Examples

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(VBScript) WebSocket Connect through SOCKS Proxy

This example shows how to establish a WebSocket connection through a SOCKS proxy.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
Set outFile = fso.CreateTextFile("output.txt", True)

'  This example requires the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

'  --------------------------------------------------
'  This example borrows the code from the REST using SOCKS Proxy example.
'  We first use the Chilkat Socket object to establish a connection to the WebSocket server through a SOCKS proxy.
'  Next, the Rest object uses the Socket object for its connection.
'  Finally, the WebSocket object uses the Rest object for its connection.
' 

set rest = CreateObject("Chilkat_9_5_0.Rest")
set socket = CreateObject("Chilkat_9_5_0.Socket")

'  Set the SOCKS proxy domain or IP address, port, and SOCKS version number (4 or 5)
socket.SocksHostname = "192.168.1.79"
socket.HttpProxyPort = 1080
socket.SocksVersion = 5

'  Provide authentication to the SOCKS proxy, if needed.
socket.SocksUsername = "SOCKS_PROXY_LOGIN"
socket.SocksPassword = "SOCKS_PROXY_PASSWORD"

'  Connect to the websocket server through the HTTP proxy.
bTls = 0
port = 80
maxWaitMs = 5000
success = socket.Connect("some-websocket-server.com",port,bTls,maxWaitMs)
If (success <> 1) Then
    outFile.WriteLine("Connect Failure Error Code: " & socket.ConnectFailReason)
    outFile.WriteLine(socket.LastErrorText)
    WScript.Quit
End If

'  Tell the Rest object to use the connected socket.
success = rest.UseConnection(socket,1)
If (success <> 1) Then
    outFile.WriteLine(rest.LastErrorText)
    WScript.Quit
End If

set ws = CreateObject("Chilkat_9_5_0.WebSocket")

'  Tell the WebSocket to use this connection.
success = ws.UseConnection(rest)
If (success <> 1) Then
    outFile.WriteLine(ws.LastErrorText)
    WScript.Quit
End If

'  Add the standard WebSocket open handshake headers that will be needed.
'  (This adds the required HTTP request headers to the rest object.)
success = ws.AddClientHeaders()

'  Add any additional headers that might be desired.
'  Two common WebSocketSpecific headers are "Sec-WebSocket-Protocol" and "Origin".
success = rest.AddHeader("Sec-WebSocket-Protocol","x-some-websocket-subprotocol")
success = rest.AddHeader("Origin","http://some-websocket-server.com")

'  Do the open handshake.
responseBody = rest.FullRequestNoBody("GET","/something")
If (rest.LastMethodSuccess <> 1) Then
    outFile.WriteLine(rest.LastErrorText)
    WScript.Quit
End If

'  If successful, the HTTP response status code should be 101,
'  and the response body will be empty. (If it failed, we'll have a look
'  at the response body..)
statusCode = rest.ResponseStatusCode
outFile.WriteLine("Response status code: " & statusCode)

If (statusCode <> 101) Then
    outFile.WriteLine(responseBody)
    outFile.WriteLine("-- Failed because of unexpected response status code.")
    WScript.Quit
End If

'  We have the expected 101 response, so let's now validate the
'  contents of the response, such as the value sent by the server in the
'  Sec-WebSocket-Accept header.
success = ws.ValidateServerHandshake()
If (success <> 1) Then
    outFile.WriteLine(ws.LastErrorText)
    WScript.Quit
End If

outFile.WriteLine("WebSocket connection successful.")

'  The application may now begin sending and receiving frames on the WebSocket connection.
'  (At this point, we're done with the rest and socket objects...)

outFile.WriteLine("Success.")

outFile.Close

 

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