Li Fangning created SSHD-722:
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Summary: Failed to setting SO_KEEPALIVE option for sshd server
socket
Key: SSHD-722
URL: https://issues.apache.org/jira/browse/SSHD-722
Project: MINA SSHD
Issue Type: Bug
Affects Versions: 1.3.0
Reporter: Li Fangning
Priority: Minor
Use the following code to set the SO_KEEPALIVE property:
PropertyResolverUtils.updateProperty(sshd, SshServer.SOCKET_KEEPALIVE, true)
I get the error message: Unsupported socket option (SO_KEEPALIVE) to set ......
After I check the code in org.apache.sshd.common.io.nio2.Nio2Acceptor#bind(), I
found that the SO_KEEPALIVE option is set on the
AsynchronousServerSocketChannel, i.e. a listening socket which can only accept
new incoming connections and not exchange data. The socket option is not
applicable to a listening socket.
(https://docs.oracle.com/javase/8/docs/api/java/nio/channels/AsynchronousServerSocketChannel.html)
Whether this code can be changed to the
org.apache.sshd.common.io.nio2.Nio2Acceptor$AcceptCompletionHandler#onCompleted(),
and set the options on the AsynchronousSocketChannel object?
SO_SENDBUF, TCP_NODELAY options have the same issue.
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