Chilkat Examples

ChilkatHOMEAndroid™Classic ASPCC++C#Mono C#.NET Core C#C# UWP/WinRTDataFlexDelphi ActiveXDelphi DLLVisual FoxProJavaLianjaMFCObjective-CPerlPHP ActiveXPHP ExtensionPowerBuilderPowerShellPureBasicCkPythonChilkat2-PythonRubySQL ServerSwift 2Swift 3/4TclUnicode CUnicode C++Visual Basic 6.0VB.NETVB.NET UWP/WinRTVBScriptXojo PluginNode.jsExcelGo

VBScript Examples

ASN.1
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Async
Azure Cloud Storage
Azure Service Bus
Base64
Bounced Email
Box
CSR
CSV
Certificates
Compression
DKIM / DomainKey
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
ECC
Email Object
Encryption
FTP
Facebook
FileAccess
Firebase
GMail REST API
GeoOp
Google APIs
Google Calendar
Google Cloud Storage
Google Drive
Google Sheets
Gzip
HTML-to-XML/Text
HTTP
HTTP Misc
IMAP
JSON
JSON Web Encryption (JWE)
JSON Web Signatures (JWS)
JSON Web Token (JWT)

Java KeyStore (JKS)
Jira
MHT / HTML Email
MIME
Microsoft Graph
NTLM
OAuth1
OAuth2
OneDrive
OpenSSL
Outlook
PEM
PFX/P12
POP3
PRNG
PayPal
Peoplevox
QuickBooks
REST
REST Misc
RSA Encryption
SCP
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
SharePoint
Shopify
Socket/SSL/TLS
Spider
Stream
Stripe
SugarCRM
Tar Archive
Twitter
Upload
VoiceBase
Walmart
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Xero
Zip
curl
eBay

 

 

 

(VBScript) WebSocket through SSH Tunnel

This example shows how to establish a WebSocket connection through an SSH tunnel. The WebSocket protocol communications will be encapsulated within an SSH tunnel.

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 through SSH Tunnel example.
'  We first use the Chilkat Socket object to establish a connection to the WebSocket server through an SSH Tunnel.
'  Next, the Rest object uses the Socket object for its connection.
'  Finally, the WebSocket object uses the Rest object for its connection.
' 
'  Hopefully the flexibility of this architecture is easy to see.  All of the HTTP functionality of the Rest object,
'  such as HTTP authentication, custom headers, etc. is available to the WebSocket.  Likewise, all of the advanced functionality
'  of the Socket object is in turn available to the Rest object.

'  The high-level steps for accomplishing the task of running the WebSocket protocol through an SSH accomplished as follows:
'  1) Create the SSH tunnel using Chilkat Socket.
'  2) Open a port-forwarding channel (to the WebSocket server) within the tunnel.
'  2) Tell Rest to use the Socket object.
'  3) Tell WebSocket to use the Rest object.

set tunnel = CreateObject("Chilkat_9_5_0.Socket")

sshHostname = "www.my-ssh-server.com"
sshPort = 22

'  Connect to an SSH server and establish the SSH tunnel:
success = tunnel.SshOpenTunnel(sshHostname,sshPort)
If (success <> 1) Then
    outFile.WriteLine(tunnel.LastErrorText)
    WScript.Quit
End If

'  Authenticate with the SSH server via a login/password
'  or with a public key.
'  This example demonstrates SSH password authentication.
success = tunnel.SshAuthenticatePw("mySshLogin","mySshPassword")
If (success <> 1) Then
    outFile.WriteLine(tunnel.LastErrorText)
    WScript.Quit
End If

'   OK, the SSH tunnel is setup.  Now open a channel within the tunnel.

bTls = 1
port = 443
maxWaitMs = 5000

'  This returns a socket object that is a single channel within the SSH tunnel.
'  The SSH channel is our logical port-forwarded connection through the SSH tunnel.
'  Note: This example establishes a TLS connection to the target WebSocket server.
'  (The TLS protocol will run on the logical channel within the SSH tunnel.)
'  Your application can just as easily make a non-TLS connection by changing the arguments
'  passed to SshOpenChannel.
' channel is a Chilkat_9_5_0.Socket
Set channel = tunnel.SshOpenChannel("some-websocket-server.com",port,bTls,maxWaitMs)
If (tunnel.LastMethodSuccess <> 1) Then
    outFile.WriteLine(tunnel.LastErrorText)
    WScript.Quit
End If

'  Create a REST object and tell it to use the SSH channel.
'  This connection is a TLS running on an SSH channel through an SSH tunnel.
'  In other words, TLS is wrapped within the SSH tunnel.
set rest = CreateObject("Chilkat_9_5_0.Rest")
success = rest.UseConnection(channel,0)
If (success <> 1) Then
    outFile.WriteLine(rest.LastErrorText)

    WScript.Quit
End If

'  Finally, tell our WebSocket object to use the Rest object..
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 object...)

outFile.Close

 

© 2000-2016 Chilkat Software, Inc. All Rights Reserved.