Shengdi created SSHD-993:
----------------------------
Summary: an additional connection is created when connect to a
sshd server
Key: SSHD-993
URL: https://issues.apache.org/jira/browse/SSHD-993
Project: MINA SSHD
Issue Type: Bug
Affects Versions: 2.1.0
Reporter: Shengdi
I used
SshServer sshd = SshServer.setUpDefaultServer(); to start an sshd server.
When I connect to server with several terminals, and then I keep connect with
other terminals, then I can probably find the additional ones. This is
randomly, and most happens after multiple connecting simultaneously or very
close, then other connect will cause additional connection
Here is an example,
I connect with 5 terminals very closely, i found 5 connections with netstat,
this is correct
TCP 127.0.0.1:63862 127.0.0.1:12399 ESTABLISHED 44444
TCP 127.0.0.1:63864 127.0.0.1:12399 ESTABLISHED 42764
TCP 127.0.0.1:63868 127.0.0.1:12399 ESTABLISHED 47036
TCP 127.0.0.1:63874 127.0.0.1:12399 ESTABLISHED 42516
TCP 127.0.0.1:63879 127.0.0.1:12399 ESTABLISHED 41704
But then connect one more time, then i found two connection established this
time,
TCP 127.0.0.1:63862 127.0.0.1:12399 ESTABLISHED 44444
TCP 127.0.0.1:63864 127.0.0.1:12399 ESTABLISHED 42764
TCP 127.0.0.1:63868 127.0.0.1:12399 ESTABLISHED 47036
TCP 127.0.0.1:63874 127.0.0.1:12399 ESTABLISHED 42516
TCP 127.0.0.1:63879 127.0.0.1:12399 ESTABLISHED 41704
{color:#FF0000}TCP 127.0.0.1:63890 127.0.0.1:12399 ESTABLISHED 35316{color}
{color:#FF0000} TCP 127.0.0.1:63891 127.0.0.1:12399 ESTABLISHED 22568{color}
Does anyone have any idea about this? how the additional connection caused?
Great Thanks
Cheers
Shengdi
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Following is my code example
==================================================
public class SSHServer {
private SshServer sshd;
public SSHServer() {
sshd = SshServer.setUpDefaultServer();
}
public void start() throws IOException {
sshd.setHost("127.0.0.1");
sshd.setPort(12399);
sshd.setKeyPairProvider(new MyKeyProvider());
sshd.setShellFactory(getShellFactory());
sshd.setPublickeyAuthenticator(new MyAuthenticator());
sshd.getProperties().put(SshServer.IDLE_TIMEOUT,
String.valueOf(300000));
// Start SSH server
sshd.start();
}
private Factory<Command> getShellFactory() {
return new Factory<Command>() {
@Override
public Command create() {
return new MyShell();
}
};
}
}
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