CODEWITHSUNDEEP
spring-integrationsftpjschspring-integration-sftp
Philippe Warnon
Philippe Warnon

Reputation: 69

Spring Integration Sftp failed to upload but simple Jsch upload is ok. Why?

I use Spring Integration SFTP to upload files to a sftp server. When I send some concurrent requests or heavy files, I received Socket Clode exception. But when I send directly the same file with simple Jsch client, even with concurrent calls, everything seems to be ok.

I use default config for both libraries. Spring SFTP uses Jsch, does it configure in such a way it could cause the error ? Is there a special configuration or operation made by Spring but not in the default configuration or behavior than simple Jsch ?

Upvotes: 0

Views: 1285

Answers (2)

Philippe Warnon
Philippe Warnon

Reputation: 69

Bean configuration that fixed the problem :

@Bean("speosSessionFactory")
public SessionFactory<ChannelSftp.LsEntry> speosSftpSessionFactory(ApplicationProperties applicationProperties) {
    DefaultSftpSessionFactory factory = new DefaultSftpSessionFactory(false);
    factory.setHost(applicationProperties.getHost());
    factory.setPort(applicationProperties.getPort());
    factory.setUser(applicationProperties.getUser());
    if (applicationProperties.getPrivateKey() != null) {
        factory.setPrivateKey(applicationProperties.getPrivateKey());
        factory.setPrivateKeyPassphrase(applicationProperties.getPrivateKeyPassphrase());
    } else {
        factory.setPassword(applicationProperties.getPassword());
    }
    factory.setAllowUnknownKeys(true);
    return new CachingSessionFactory<>(factory, applicationProperties.getMaxSessions());
}

Upvotes: 0

Philippe Warnon
Philippe Warnon

Reputation: 69

The problem is fixed. When setting isSharedSession to true, Spring doesn't close the session, that remains in a pool in order to avoid close/reopen operations. It causes some "Socket Closed" errors with some sftp servers (depending of their config). When using raw jsch client with dedicated session + channel per operation its'ok, using isSharedSession=false is also ok, so in some way, isSharedSession = false could be seen as equivalent to raw jsch operation with open/close for each operation

Upvotes: 1

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