how to connect a ssh client?

Posted by Sripriya under C# on 11/21/2011 | Points: 10 | Views : 8949 | Status : [Member] | Replies : 1

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private void Sshconnect()
{
try
{
Ssh = new SshExec(pHostIp, pUserName, pPassword);
txtwrite.Text="Connecting to " + pHostIp + "...";
Ssh.Connect();
if (Ssh.Connected)
txtwrite.Text = "Host:" + pHostIp + "...Connected";
else
txtwrite.Text="Host:" + pHostIp + "...is not reachable";
}
catch (Exception ex)
{
txtwrite.Text="Host:" + pHostIp + "...is not reachable";
txtwrite.Text = "Error : " + ex.ToString();
}
}
its my code, getting some error

Session.connect: System.NullReferenceException: Object reference not set to an instance of an object.
at Tamir.SharpSsh.jsch.jce.HMACMD5.update(Byte[] foo, Int32 s, Int32 l)
at Tamir.SharpSsh.jsch.jce.HMACMD5.update(Int32 i)
at Tamir.SharpSsh.jsch.Session.read(Buffer buf)
at Tamir.SharpSsh.jsch.UserAuth.start(Session session)
at Tamir.SharpSsh.jsch.UserAuthNone.start(Session session)
at Tamir.SharpSsh.jsch.Session.connect(Int32 connectTimeout)

at Tamir.SharpSsh.jsch.Session.connect(Int32 connectTimeout)
at Tamir.SharpSsh.jsch.Session.connect()
at Tamir.SharpSsh.SshBase.ConnectSession(Int32 tcpPort)
at Tamir.SharpSsh.SshBase.Connect(Int32 tcpPort)
at Tamir.SharpSsh.SshBase.Connect()
at TrxInventoryReport._Default.Sshconnect() in D:\sripriya\TrxInventoryReport\TrxInventoryReport\Trxreport.aspx.cs:line 163

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Posted by: Varung on: 12/5/2011 [Member] Starter | Points: 25

0	private static void SSHConnect() { try { SshConnectionInfo input = GetInput(); SshShell ssh = new SshShell(input.Host, input.User); if (input.Pass != null) ssh.Password = input.Pass; if (input.IdentityFile != null) ssh.AddIdentityFile(input.IdentityFile); ssh.Connect(); string pattern = "$"; ssh.ExpectPattern = pattern; ssh.RemoveTerminalEmulationCharacters = true; ArrayList sshscript = new ArrayList(); sshscript.Add("commands"); int i = 0; string output = ""; while (ssh.ShellOpened) { if (i == 0) output = ssh.Expect(pattern); if (i < sshscript.Count) { string data = sshscript[i].ToString(); if (data == "") break; ssh.WriteLine(data); output = ssh.Expect(pattern); i += 1; } else break; } ssh.Close(); } catch (Exception e) { string ErrMsg = e.Message; } } private static SshConnectionInfo GetInput() { SshConnectionInfo info = new SshConnectionInfo(); info.Host = "ur host address" info.User = "username" info.Pass = "pwd"; return info; } private struct SshConnectionInfo { public string Host; public string User; public string Pass; public string IdentityFile; } G.Varun Sripriya, if this helps please login to Mark As Answer. \| Alert Moderator

private static void SSHConnect()
{
try
{
SshConnectionInfo input = GetInput();
SshShell ssh = new SshShell(input.Host, input.User);
if (input.Pass != null) ssh.Password = input.Pass;
if (input.IdentityFile != null) ssh.AddIdentityFile(input.IdentityFile);
ssh.Connect();
string pattern = "$";
ssh.ExpectPattern = pattern;
ssh.RemoveTerminalEmulationCharacters = true;
ArrayList sshscript = new ArrayList();
sshscript.Add("commands");
int i = 0;
string output = "";
while (ssh.ShellOpened)
{
if (i == 0)
output = ssh.Expect(pattern);
if (i < sshscript.Count)
{
string data = sshscript[i].ToString();
if (data == "") break;
ssh.WriteLine(data);
output = ssh.Expect(pattern);
i += 1;
}
else
break;
}
ssh.Close();
}
catch (Exception e)
{
string ErrMsg = e.Message;
}
}

private static SshConnectionInfo GetInput()
{
SshConnectionInfo info = new SshConnectionInfo();
info.Host = "ur host address"
info.User = "username"
info.Pass = "pwd";
return info;
}

private struct SshConnectionInfo
{
public string Host;
public string User;
public string Pass;
public string IdentityFile;
}

G.Varun

Sripriya, if this helps please login to Mark As Answer. | Alert Moderator

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