You should be able to achieve that using a custom org.apache.sshd.common.io.IoConnector / IoServiceFactory. These are the interfaces used by sshd to connect and process all low-level I/O. There are 3 implementations using sock nio2, mina or netty. You'll have to override one to return an already existing TCP connection wrapped into a dummy IoConnector which will return an IoSession implementation. Whichever implementation you choose to derive from should work, and you should be able to reuse the provided IoSession implementation as is hopefully. So this should just be a matter of implementing the 2 interfaces IoConnector and IoServiceFactory.
Le mer. 8 déc. 2021 à 15:31, Bergquist, Brett <[email protected]> a écrit : > For background the Netconf Protocol (rfc6241 > <https://tools.ietf.org/html/rfc6241>) supports a Call Home feature where > the Netconf server (SSH server) initiates a connection. In this case, the > Netconf server initiates a TCP connection to TCP port 4334. What needs to > happen is that the TCP connection request is accepted by code in the SSH > client application and then this TCP connection needs to be used to > establish the SSH client to SSH server connection. > > So we need to initiate a client SSH connection using Apache MINA SSHD > using an already established TCP connection. The TCP connection could be > established using Apache MINA CORE if required. This is to support a SSH > server application (Netconf with Call Home) so that it can work behind a > NAT firewall. In this case the TCP connection will originate from within > a device behind the NAT firewall by establishing an outbound TCP > connection. We wish to use that TCP connection and pass it to the Apache > MINA SSHD client for its SSH use. > > We are having trouble figuring out what we need to provide or implement or > inject to allow the SshClient to connect using the already established TCP > connection. We cannot use the normal "SshClient.connect" methods as those > will try to establish a separate TCP connection. > > Right now we are trying to use a NioSocketAcceptor with our own > IoHandlerAdpater and in the "sessionOpened" method, hand off the session > somehow to the the SshClient. > > Any guidance on how to move forward will be greatly appreciated. > > > -- > > *Brett Bergquist – *Chief Software Architect > > 100 Bank Street, Seymour CT 06483 > > *Main*: 203.888.7914 Ext 204 - *Fax*: 203.888.7932 > > <http://www.canoga.com> > > ------------------------------ > > Canoga Perkins > 20600 Prairie Street > Chatsworth, CA 91311 > (818) 718-6300 > > This e-mail and any attached document(s) is confidential and is intended > only for the review of the party to whom it is addressed. If you have > received this transmission in error, please notify the sender immediately > and discard the original message and any attachment(s). > -- ------------------------ Guillaume Nodet
