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

C# 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

 

 

 

(C# UWP/WinRT) Send and Receive WebSocket Frame

Demonstrates how to send a websocket text frame to a websocket echo server. This example uses Chilkat's websocket test echo server at ws://websockets.chilkat.io/wsChilkatEcho.ashx

Note: The websockets.chilkat.io server imposes the following limitations:
Messages must be 16K or less, and each connection is limited to a max of 16 echoed messages.

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.

Chilkat.WebSocket ws = 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.

Chilkat.Rest rest = new Chilkat.Rest();
// Connect to websockets.chilkat.io
// IMPORTANT: websockets.chilkat.io accepts frames of up to 16K in size and echoes them back.
// IMPORTANT: The websockets.chilkat.io server imposes the following limitations: 
// ---------- Messages must be 16K or less, and each connection is limited to a max of 16 echoed messages.
bool success = await rest.ConnectAsync("websockets.chilkat.io",80,false,false);
ws.UseConnection(rest);
ws.AddClientHeaders();
string responseBodyIgnored = await rest.FullRequestNoBodyAsync("GET","/wsChilkatEcho.ashx");
success = ws.ValidateServerHandshake();
if (success != true) {
    Debug.WriteLine(ws.LastErrorText);
    return;
}

// This example demonstrates sending a frame and receiving a text frame.

// Send a frame containing the string "Hello World!"
// This will be the first and final frame, and therefore this constitutes the entire message.
bool finalFrame = true;
success = await ws.SendFrameAsync("Hello World!",finalFrame);
if (success != true) {
    Debug.WriteLine(ws.LastErrorText);
    return;
}

// Read an incoming frame.
success = await ws.ReadFrameAsync();
if (success != true) {
    Debug.WriteLine("Failed to receive a frame");
    Debug.WriteLine("ReadFrame fail reason = " + Convert.ToString(ws.ReadFrameFailReason));
    Debug.WriteLine(ws.LastErrorText);
    return;
}

// Show the string that was received.
string receivedStr = ws.GetFrameData();
Debug.WriteLine("Received: " + receivedStr);

// Close the websocket connection.
success = await ws.SendCloseAsync(true,1000,"Closing this websocket.");
if (success != true) {
    Debug.WriteLine(ws.LastErrorText);
    return;
}

// Read the Close response.
success = await ws.ReadFrameAsync();
if (success != true) {
    Debug.WriteLine("ReadFrame fail reason = " + Convert.ToString(ws.ReadFrameFailReason));
    Debug.WriteLine(ws.LastErrorText);
    return;
}

// Should receive the "Close" opcode.
Debug.WriteLine("Received opcode: " + ws.FrameOpcode);
// Should be the same status code we sent (1000)
Debug.WriteLine("Received close status code: " + Convert.ToString(ws.CloseStatusCode));
// The server may echo the close reason.  If not, this will be empty.
Debug.WriteLine("Echoed close reason: " + ws.CloseReason);

Debug.WriteLine("Success.");

 

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