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"SSH connection already established" error

Posted: 02/22/2012 13:29:41
by Andy Gardner (SUPPORT DISABLED)
Joined: 02/17/2012
Posts: 51

Is it possible to have an TElSimpleSSHClient connection and a TElSimpleSFTPClient connection to the same computer at the same time?

I have re-implemented my class for passing commands through the SSH client to reuse the existing instance of TElSimpleSSHClient, but I am still getting the exception with the "SSH connection already established" message.

The exception occurs during the constructor of my SSHProcess class (see below) when ExecuteCommand is called.

public SSHProcess(TElSimpleSSHClient sshClient, string command)
    this.sshClient = sshClient;


    byte[] stdErrData = new byte[BUFFER_SIZE];
    byte[] stdOutData = sshClient.ExecuteCommand(
        ref stdErrData);


Here is the relevant stack trace:
SBSimpleSSH.EElSimpleSSHClientError was caught
Message=SSH connection already established
at SBSimpleSSH.TElSimpleSSHClient.Open()
at SBSimpleSSH.TElSimpleSSHClient.InternalExecuteCommand(String Cmd, Byte[]& StdErrData, Boolean RedirectStdErr)
at SBSimpleSSH.TElSimpleSSHClient.ExecuteCommand(String Cmd, Byte[]& StdErrData)

What am I doing wrong?


Posted: 02/23/2012 03:22:32
by Vsevolod Ievgiienko (Team)

Could you please create a ticket in Helpdesk (https://www.eldos.com/helpdesk/index.php) and post a full project there. If will be easier to find out what is wrong.

The only reason could be that sshClient is already connected to the server before it is passed as a constructor parameter.
Posted: 02/24/2012 09:01:11
by Andy Gardner (SUPPORT DISABLED)
Joined: 02/17/2012
Posts: 51

I misunderstood the proper usage. I thought that you needed to open the connection before calling ExecuteCommand and I didn't realize that calling ExecuteCommand would open the connection.

I removed my call of Open() and that eliminated this error.

Thank you
Posted: 02/24/2012 10:58:32
by Eugene Mayevski (Team)

Please ignore my last message. Open is indeed called inside.

Sincerely yours
Eugene Mayevski



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