Chilkat Examples

ChilkatHOMEAndroid™Classic ASPCC++C#Mono C#.NET Core C#C# UWP/WinRTDataFlexDelphi ActiveXDelphi DLLVisual FoxProJavaLianjaMFCObjective-CPerlPHP ActiveXPHP ExtensionPowerBuilderPowerShellPureBasicCkPythonChilkat2-PythonRubySQL ServerSwift 2Swift 3,4,5...TclUnicode CUnicode C++Visual Basic 6.0VB.NETVB.NET UWP/WinRTVBScriptXojo PluginNode.jsExcelGo

VB.NET UWP/WinRT Examples

Web API Categories

ASN.1
Amazon EC2
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Azure Cloud Storage
Azure Service Bus
Azure Table Service
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Compression
DKIM / DomainKey
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
EBICS
ECC
Ed25519
Email Object
Encryption
FTP
FileAccess
Firebase
GMail REST API
GMail SMTP/IMAP/POP
Geolocation
Google APIs
Google Calendar
Google Cloud SQL
Google Cloud Storage
Google Drive
Google Photos
Google Sheets
Google Tasks
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)
MHT / HTML Email
MIME
MS Storage Providers
Microsoft Graph
NTLM
OAuth1
OAuth2
OIDC
Office365
OneDrive
OpenSSL
Outlook
Outlook Calendar
Outlook Contact
PDF Signatures
PEM
PFX/P12
PKCS11
POP3
PRNG
REST
REST Misc
RSA
SCP
SCard
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
ScMinidriver
SharePoint
Socket/SSL/TLS
Spider
Stream
Tar Archive
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl

 

 

 

(VB.NET UWP/WinRT) Binary.com Tick Stream

Tick Stream Request -- Initiate a continuous stream of spot price updates for a given symbol.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

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

Dim ws As New Chilkat.WebSocket

'  For brevity, this example does not check for errors when etablishing the WebSocket connection.
'  See Establish WebSocket Connection for more complete sample code for making the connection.

Dim rest As New Chilkat.Rest

'  Connect to ws.binaryws.com
Dim success As Boolean = Await rest.ConnectAsync("ws.binaryws.com",443,True,False)
ws.UseConnection(rest)
ws.AddClientHeaders()

'  My app_id is 12332.  You'll wnat to use your own...
Dim responseBody As String = Await rest.FullRequestNoBodyAsync("GET","/websockets/v3?app_id=12332")
success = ws.ValidateServerHandshake()
If (success <> True) Then
    Debug.WriteLine(ws.LastErrorText)
    Debug.WriteLine(responseBody)
    Debug.WriteLine(rest.ResponseHeader)
    Exit Sub
End If


'  Build and send the following message:

'  {
'    "ticks": "R_50",
'    "subscribe": 1
'  }

Dim json As New Chilkat.JsonObject
json.AppendString("ticks","R_50")
json.AppendInt("subscribe",1)

'  Send a full message in a single frame
Dim finalFrame As Boolean = True
success = Await ws.SendFrameAsync(json.Emit(),finalFrame)
If (success <> True) Then
    Debug.WriteLine(ws.LastErrorText)
    Exit Sub
End If


Dim jsonTickData As New Chilkat.JsonObject
jsonTickData.EmitCompact = False

'  Begin reading the tick stream response.
'  We'll just read the 1st 10 updates and then exit..
Dim receivedFinalFrame As Boolean = False
Dim numTicksReceived As Integer = 0
While numTicksReceived < 5

    success = Await ws.ReadFrameAsync()
    If (success <> True) Then
        Debug.WriteLine("Failed to receive a frame")
        Debug.WriteLine("ReadFrame fail reason = " & ws.ReadFrameFailReason)
        Debug.WriteLine(ws.LastErrorText)
        Exit Sub
    End If


    '  The responses we desire are in Text frames, where the opcode = 1.
    If (ws.FrameOpcodeInt = 1) Then
        Dim receivedJson As String = ws.GetFrameData()

        jsonTickData.Load(receivedJson)
        Debug.WriteLine(jsonTickData.Emit())

        numTicksReceived = numTicksReceived + 1
    End If


End While

'  Close the websocket connection.
success = Await ws.SendCloseAsync(True,1000,"Closing this websocket.")
If (success <> True) Then
    Debug.WriteLine(ws.LastErrorText)
    Exit Sub
End If


'  Read the Close response.
success = Await ws.ReadFrameAsync()
If (success <> True) Then
    Debug.WriteLine("ReadFrame fail reason = " & ws.ReadFrameFailReason)
    Debug.WriteLine(ws.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("Success.")


'  The output of the above code is shown here:

'  {
'    "echo_req": {
'      "subscribe": 1,
'      "ticks": "R_50"
'    },
'    "msg_type": "tick",
'    "tick": {
'      "ask": "373.8725",
'      "bid": "373.8325",
'      "epoch": "1517437456",
'      "id": "2d3dedf1-45e2-66a5-d0d3-72bd7f0a6ea9",
'      "quote": "373.8525",
'      "symbol": "R_50"
'    }
'  }
' 
'  {
'    "echo_req": {
'      "subscribe": 1,
'      "ticks": "R_50"
'    },
'    "msg_type": "tick",
'    "tick": {
'      "ask": "373.7952",
'      "bid": "373.7552",
'      "epoch": "1517437458",
'      "id": "2d3dedf1-45e2-66a5-d0d3-72bd7f0a6ea9",
'      "quote": "373.7752",
'      "symbol": "R_50"
'    }
'  }
' 
'  {
'    "echo_req": {
'      "subscribe": 1,
'      "ticks": "R_50"
'    },
'    "msg_type": "tick",
'    "tick": {
'      "ask": "373.8638",
'      "bid": "373.8238",
'      "epoch": "1517437460",
'      "id": "2d3dedf1-45e2-66a5-d0d3-72bd7f0a6ea9",
'      "quote": "373.8438",
'      "symbol": "R_50"
'    }
'  }
' 
'  {
'    "echo_req": {
'      "subscribe": 1,
'      "ticks": "R_50"
'    },
'    "msg_type": "tick",
'    "tick": {
'      "ask": "373.7636",
'      "bid": "373.7236",
'      "epoch": "1517437462",
'      "id": "2d3dedf1-45e2-66a5-d0d3-72bd7f0a6ea9",
'      "quote": "373.7436",
'      "symbol": "R_50"
'    }
'  }
' 
'  {
'    "echo_req": {
'      "subscribe": 1,
'      "ticks": "R_50"
'    },
'    "msg_type": "tick",
'    "tick": {
'      "ask": "373.6870",
'      "bid": "373.6470",
'      "epoch": "1517437464",
'      "id": "2d3dedf1-45e2-66a5-d0d3-72bd7f0a6ea9",
'      "quote": "373.6670",
'      "symbol": "R_50"
'    }
'  }
' 
'  Success.

 

© 2000-2022 Chilkat Software, Inc. All Rights Reserved.