Cómo configurar KEX en la sesión JSch cuando se usa Apache VFS

Question

May 19, 2017, 08:02 PM

Cómo configurar KEX en la sesión JSch cuando se usa Apache VFS

estoy usandoApache VFS 2.1 conJSch 0.1.54 (últimas versiones de hoy) para cargar archivos usando SFTP.

El sistema arroja"Fin de IO Stream Read" cuando se conecta, la pila completa es:

Caused by: com.jcraft.jsch.JSchException: Session.connect: java.io.IOException: End of IO Stream Read
    at com.jcraft.jsch.Session.connect(Session.java:565)
    at com.jcraft.jsch.Session.connect(Session.java:183)
    at org.apache.commons.vfs2.provider.sftp.SftpClientFactory.createConnection(SftpClientFactory.java:166)

He encontrado una posible solución a mi problema eneste hilo pero opera directamente con el JSch. Como estoy usando Apache VFS, no puedo acceder alSession directamente (al menos creo que no puedo).

Pero si pudiera, se vería así:

session.setConfig("kex", "diffie-hellman-group1-sha1");

Analizando la implementación de Apache VFSorg.apache.commons.vfs2.provider.sftp.SftpClientFactory no encontró una manera de establecer esta propiedad.

¿Cómo puedo configurar esta configuración usando la API de Apache VFS?

Actualizar

Dato de registro:

22/05/2017 09:27:20 org.apache.commons.vfs2.impl.StandardFileSystemManager info
INFO: Using "D:\Users\TECBMEPI\AppData\Local\Temp\vfs_cache" as temporary files store.
22/05/2017 09:27:20 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: Connecting to z1t1brmxpta022 port 22
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: Connection established
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: Remote version string: SSH-2.0-OpenSSH_6.6.1
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: Local version string: SSH-2.0-JSCH-0.1.54
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: CheckCiphers: aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-ctr,arcfour,arcfour128,arcfour256
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: aes256-ctr is not available.
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: aes192-ctr is not available.
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: aes256-cbc is not available.
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: aes192-cbc is not available.
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: CheckKexes: diffie-hellman-group14-sha1,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: diffie-hellman-group14-sha1 is not available.
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: ecdh-sha2-nistp256 is not available.
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: ecdh-sha2-nistp384 is not available.
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: ecdh-sha2-nistp521 is not available.
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: CheckSignatures: ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: ecdsa-sha2-nistp256 is not available.
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: ecdsa-sha2-nistp384 is not available.
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: ecdsa-sha2-nistp521 is not available.
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: SSH_MSG_KEXINIT sent
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: SSH_MSG_KEXINIT received
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: server: [email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: server: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ssh-ed25519
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: server: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,[email protected],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected]
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: server: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,[email protected],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected]
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: server: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-sha1,[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: server: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-sha1,[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: server: none,[email protected]
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: server: none,[email protected]
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: server: 
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: server: 
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: client: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: client: ssh-rsa,ssh-dss
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: client: none
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: client: none
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: client: 
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: client: 
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: server->client aes128-ctr hmac-md5 none
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: kex: client->server aes128-ctr hmac-md5 none
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: SSH_MSG_KEX_DH_GEX_REQUEST(1024<1024<1024) sent
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: expecting SSH_MSG_KEX_DH_GEX_GROUP
22/05/2017 09:27:21 org.apache.commons.vfs2.provider.sftp.SftpClientFactory log
INFO: Disconnecting from z1t1brmxpta022 port 22