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

DataFlex Examples

Web API Categories

ASN.1
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Async
Azure Cloud Storage
Azure Service Bus
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Compression
DKIM / DomainKey
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
ECC
Email Object
Encryption
FTP
FileAccess
Firebase
GMail REST API
Geolocation
Google APIs
Google Calendar
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
Microsoft Graph
NTLM
OAuth1
OAuth2
OneDrive
OpenSSL
Outlook
PEM
PFX/P12
POP3
PRNG
REST
REST Misc
RSA
SCP
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
SharePoint
Socket/SSL/TLS
Spider
Stream
Tar Archive
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl

 

 

 

(DataFlex) SSH Parallel Remote Commands on Multiple Servers

Shows how to execute a command in parallel on multiple servers.

Note: This example requires Chilkat v9.5.0.65 or greater.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Handle hoSsh1
    Handle hoSsh2
    Handle hoSsh3
    Integer iPort
    Boolean iSuccess
    String sCmd
    Integer iSsh1Channel
    Integer iSsh2Channel
    Integer iSsh3Channel
    Integer iPollTimeoutMs
    Integer iNumFinished
    Integer iChannel
    Boolean iSsh1Finished
    Boolean iSsh2Finished
    Boolean iSsh3Finished
    String sTemp1

    //  This example assumes Chilkat SSH/SFTP to have been previously unlocked.
    //  See Unlock SSH for sample code.

    //  Executing a command on multiple servers simultaneously is straightforward.
    //  It's just a matter of using one SSH object per server..
    Get Create (RefClass(cComChilkatSsh)) To hoSsh1
    If (Not(IsComObjectCreated(hoSsh1))) Begin
        Send CreateComObject of hoSsh1
    End
    Get Create (RefClass(cComChilkatSsh)) To hoSsh2
    If (Not(IsComObjectCreated(hoSsh2))) Begin
        Send CreateComObject of hoSsh2
    End
    Get Create (RefClass(cComChilkatSsh)) To hoSsh3
    If (Not(IsComObjectCreated(hoSsh3))) Begin
        Send CreateComObject of hoSsh3
    End

    Move 22 To iPort
    Get ComConnect Of hoSsh1 "ssh-server1.com" iPort To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoSsh1 To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    //  Authenticate using login/password:
    Get ComAuthenticatePw Of hoSsh1 "sshLogin1" "sshPassword1" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoSsh1 To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    //  Connect and authenticate with 2 more servers.
    //  For brevity, the success/failure won't be checked...
    Get ComConnect Of hoSsh2 "ssh-server2.com" iPort To iSuccess
    Get ComAuthenticatePw Of hoSsh2 "sshLogin2" "sshPassword2" To iSuccess
    Get ComConnect Of hoSsh3 "ssh-server3.com" iPort To iSuccess
    Get ComAuthenticatePw Of hoSsh3 "sshLogin3" "sshPassword3" To iSuccess

    //  Note: If we wanted, we could've used ConnectAsync and AuthenticatePwAsync
    //  to do the connecting and authenticating in parallel...

    //  The command to be run on each SSH server will sleep for 5 seconds,
    //  and then show the current system date/time.
    Move "sleep 5; date" To sCmd

    //  Start each command
    Get ComQuickCmdSend Of hoSsh1 sCmd To iSsh1Channel
    If (iSsh1Channel < 0) Begin
        Get ComLastErrorText Of hoSsh1 To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    //  For brevity, we're not checking the return values here:
    Get ComQuickCmdSend Of hoSsh2 sCmd To iSsh2Channel
    Get ComQuickCmdSend Of hoSsh3 sCmd To iSsh3Channel

    //  OK, at this point the command is running simultaneously on each server.

    //  Now collect the results of each command.
    Move 50 To iPollTimeoutMs
    Move 0 To iNumFinished

    //  Note: You would rewrite this code to use arrays.
    Move False To iSsh1Finished
    Move False To iSsh2Finished
    Move False To iSsh3Finished
    While (iNumFinished < 3)
        //  Check to see if anything has finished.
        //  QuickCmdCheck returns -1 if there are no errors and nothing else finished
        //  QuickCmdCheck returns -2 if there was an error (such as a lost connection)
        //  QuickCmdCheck returns a channel number if a channel finished.
        If (iSsh1Finished <> True) Begin
            Get ComQuickCmdCheck Of hoSsh1 iPollTimeoutMs To iChannel
            If (iChannel = -2) Begin
                Get ComLastErrorText Of hoSsh1 To sTemp1
                Showln sTemp1
                Procedure_Return
            End

            If (iChannel = iSsh1Channel) Begin
                Showln "---- ssh1 channel " iChannel " finished ----"
                Get ComGetReceivedText Of hoSsh1 iChannel "ansi" To sTemp1
                Showln sTemp1
                Move iNumFinished + 1 To iNumFinished
                Move True To iSsh1Finished
            End

        End

        If (iSsh2Finished <> True) Begin
            Get ComQuickCmdCheck Of hoSsh2 iPollTimeoutMs To iChannel
            If (iChannel = -2) Begin
                Get ComLastErrorText Of hoSsh2 To sTemp1
                Showln sTemp1
                Procedure_Return
            End

            If (iChannel = iSsh2Channel) Begin
                Showln "---- ssh2 channel " iChannel " finished ----"
                Get ComGetReceivedText Of hoSsh2 iChannel "ansi" To sTemp1
                Showln sTemp1
                Move iNumFinished + 1 To iNumFinished
                Move True To iSsh2Finished
            End

        End

        If (iSsh3Finished <> True) Begin
            Get ComQuickCmdCheck Of hoSsh3 iPollTimeoutMs To iChannel
            If (iChannel = -2) Begin
                Get ComLastErrorText Of hoSsh3 To sTemp1
                Showln sTemp1
                Procedure_Return
            End

            If (iChannel = iSsh3Channel) Begin
                Showln "---- ssh3 channel " iChannel " finished ----"
                Get ComGetReceivedText Of hoSsh3 iChannel "ansi" To sTemp1
                Showln sTemp1
                Move iNumFinished + 1 To iNumFinished
                Move True To iSsh3Finished
            End

        End

    Loop

    //  --------------
    //  Sample output:

    // 	---- ssh2 channel 101 finished ----
    // 	Fri Dec 23 00:25:48 UTC 2016
    // 
    // 	---- ssh3 channel 102 finished ----
    // 	Thu Dec 22 18:25:12 CST 2016
    // 
    // 	---- ssh1 channel 100 finished ----
    // 	Thu Dec 22 18:25:48 CST 2016


End_Procedure

 

© 2000-2019 Chilkat Software, Inc. All Rights Reserved.