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) SSL Server Example

Demonstrates how to create an SSL socket for accepting connections. This example is *very* simple in that it will create an SSL socket for accepting a single connection. It will read a message from the client, send a reply, and exit.

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 listenSslSocket As New Chilkat.Socket

' An SSL server needs a digital certificate.  This example loads it from a PFX file.

' Create an instance of a certificate store object, load a PFX file,
' locate the certificate we need, and use it.
' (a PFX file may contain more than one certificate.)
Dim certStore As New Chilkat.CertStore
' The 1st argument is the filename, the 2nd arg is the 
' PFX file's password:
Dim success As Boolean = certStore.LoadPfxFile("chilkat.pfx","test")
If (success <> True) Then
    Debug.WriteLine(certStore.LastErrorText)
    Exit Sub
End If


' Find the certificate to be used for SSL:
Dim cert As Chilkat.Cert
cert = certStore.FindCertBySubject("Chilkat Software, Inc.")
If (certStore.LastMethodSuccess = False) Then
    Debug.WriteLine(certStore.LastErrorText)
    Exit Sub
End If


' Use the certificate:
success = listenSslSocket.InitSslServer(cert)
If (success <> True) Then

    Debug.WriteLine(listenSslSocket.LastErrorText)
    Exit Sub
End If




' Bind and listen on a port:
Dim myPort As Integer = 8123
' Allow for a max of 5 queued connect requests.
Dim backLog As Integer = 5
success = Await listenSslSocket.BindAndListenAsync(myPort,backLog)
If (success <> True) Then
    Debug.WriteLine(listenSslSocket.LastErrorText)
    Exit Sub
End If


' If accepting an SSL/TLS connection, the SSL handshake is part of the connection
' establishment process. This involves a few back-and-forth messages between the 
' client and server to establish algorithms and a shared key to create the secure 
' channel. The sending and receiving of these messages are governed by the 
' MaxReadIdleMs and MaxSendIdleMs properties. If these properties are set to 0 
' (and this is the default unless changed by your application), then the 
' AcceptNextConnection can hang indefinitely during the SSL handshake process. 
' Make sure these properties are set to appropriate values before calling AcceptNextConnection.

' Set a 10 second max for waiting to read/write.  This is for the SSL/TLS handshake establishment.
listenSslSocket.MaxReadIdleMs = 10000
listenSslSocket.MaxSendIdleMs = 10000

' Accept a single client connection and establish the secure SSL/TLS channel:
Dim clientSock As Chilkat.Socket
Dim maxWaitMillisec As Integer = 20000
clientSock = Await listenSslSocket.AcceptNextConnectionAsync(maxWaitMillisec)
If (listenSslSocket.LastMethodSuccess = False) Then
    Debug.WriteLine(listenSslSocket.LastErrorText)
    Exit Sub
End If


' The client (in this example) is going to send a "Hello Server! -EOM-" 
' message.  Read it:
Dim receivedMsg As String = Await clientSock.ReceiveUntilMatchAsync("-EOM-")
If (clientSock.LastMethodSuccess <> True) Then
    Debug.WriteLine(clientSock.LastErrorText)
    Exit Sub
End If


Debug.WriteLine(receivedMsg)

' Send a "Hello Client! -EOM-" message:
success = Await clientSock.SendStringAsync("Hello Client! -EOM-")
If (success <> True) Then
    Debug.WriteLine(clientSock.LastErrorText)
    Exit Sub
End If


' Close the connection with the client
' Wait a max of 20 seconds (20000 millsec)
success = Await clientSock.CloseAsync(20000)



 

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