Classic ASP
WebSocket Connect through SOCKS Proxy

This example shows how to establish a WebSocket connection through a SOCKS proxy.
Chilkat Classic ASP Downloads

Classic ASP
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<%
success = 0

'  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 = Server.CreateObject("Chilkat.Rest")
set socket = Server.CreateObject("Chilkat.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
    Response.Write "<pre>" & Server.HTMLEncode( "Connect Failure Error Code: " & socket.ConnectFailReason) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( socket.LastErrorText) & "</pre>"
    Response.End
End If

'  Tell the Rest object to use the connected socket.
success = rest.UseConnection(socket,1)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( rest.LastErrorText) & "</pre>"
    Response.End
End If

set ws = Server.CreateObject("Chilkat.WebSocket")

'  Tell the WebSocket to use this connection.
success = ws.UseConnection(rest)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( ws.LastErrorText) & "</pre>"
    Response.End
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
    Response.Write "<pre>" & Server.HTMLEncode( rest.LastErrorText) & "</pre>"
    Response.End
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
Response.Write "<pre>" & Server.HTMLEncode( "Response status code: " & statusCode) & "</pre>"

If (statusCode <> 101) Then
    Response.Write "<pre>" & Server.HTMLEncode( responseBody) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "-- Failed because of unexpected response status code.") & "</pre>"
    Response.End
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
    Response.Write "<pre>" & Server.HTMLEncode( ws.LastErrorText) & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( "WebSocket connection successful.") & "</pre>"

'  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...)

Response.Write "<pre>" & Server.HTMLEncode( "Success.") & "</pre>"

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