(AutoIt) WebSocket Connect through HTTP Proxy

This example shows how to establish a WebSocket connection through an HTTP proxy server.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

; 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 HTTP Proxy example.
; We first use the Chilkat Socket object to establish a connection to the WebSocket server through an HTTP proxy.
; Next, the Rest object uses the Socket object for its connection.
; Finally, the WebSocket object uses the Rest object for its connection.  
; 

$oRest = ObjCreate("Chilkat.Rest")
$oSocket = ObjCreate("Chilkat.Socket")

; Set the HTTP proxy domain or IP address, and port.
$oSocket.HttpProxyHostname = "192.168.1.79"
$oSocket.HttpProxyPort = 808

; Provide authentication to the HTTP proxy, if needed.
$oSocket.HttpProxyUsername = "HTTP_PROXY_LOGIN"
$oSocket.HttpProxyPassword = "HTTP_PROXY_PASSWORD"
$oSocket.HttpProxyAuthMethod = "Basic"

; Indicate that HTTP requests (i.e. the WebSocket opening handshake) will be sent over the socket.
; This is important for how the HTTP proxy connection is established.
$oSocket.HttpProxyForHttp = True

; Connect to the websocket server through the HTTP proxy.
Local $bTls = False
Local $iPort = 80
Local $iMaxWaitMs = 5000
Local $bSuccess = $oSocket.Connect("some-websocket-server.com",$iPort,$bTls,$iMaxWaitMs)
If ($bSuccess <> True) Then
    ConsoleWrite("Connect Failure Error Code: " & $oSocket.ConnectFailReason & @CRLF)
    ConsoleWrite($oSocket.LastErrorText & @CRLF)
    Exit
EndIf

; Tell the Rest object to use the connected socket.
$bSuccess = $oRest.UseConnection($oSocket,True)
If ($bSuccess <> True) Then
    ConsoleWrite($oRest.LastErrorText & @CRLF)
    Exit
EndIf

$oWs = ObjCreate("Chilkat.WebSocket")

; Tell the WebSocket to use this connection.
$bSuccess = $oWs.UseConnection($oRest)
If ($bSuccess <> True) Then
    ConsoleWrite($oWs.LastErrorText & @CRLF)
    Exit
EndIf

; Add the standard WebSocket open handshake headers that will be needed.
; (This adds the required HTTP request headers to the rest object.)
$oWs.AddClientHeaders()

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

; Do the open handshake.
Local $sResponseBody = $oRest.FullRequestNoBody("GET","/something")
If ($oRest.LastMethodSuccess <> True) Then
    ConsoleWrite($oRest.LastErrorText & @CRLF)
    Exit
EndIf

; 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..)
Local $iStatusCode = $oRest.ResponseStatusCode
ConsoleWrite("Response status code: " & $iStatusCode & @CRLF)

If ($iStatusCode <> 101) Then
    ConsoleWrite($sResponseBody & @CRLF)
    ConsoleWrite("-- Failed because of unexpected response status code." & @CRLF)
    Exit
EndIf

; 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. 
$bSuccess = $oWs.ValidateServerHandshake()
If ($bSuccess <> True) Then
    ConsoleWrite($oWs.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("WebSocket connection successful." & @CRLF)

; 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...)

ConsoleWrite("Success." & @CRLF)