DefaultFtpSessionFactory and Proxy

[sseaman]

I need to FTP to a site through a proxy and I see that DefaultSftpSessionFactory supports a proxy but DefaultFtpSessionFactory does not.

Questions:
1) Why the inconsistency?
2) Is there a way to get DefaultFtpSessionFactory to use a proxy
3) If there is a way, how would I do it (other than "Just write your own version")?

[oleg.zhurakousky]

There is actually nothing inconsistent about it. The SFTP uses different library that has an explicit proxy setting where FTP uses commons-net which uses different mechanism to connect through proxy. You can read more here: http://wiki.apache.org/commons/Net/F...AskedQuestions. Scroll down to "Does FTPClient support FTP connections through an FTP proxy server?" as well as http://marc.info/?l=jakarta-commons-...7944806547&w=2

Basically all you need to do is set two system properties before creating ApplicationContext.
For example one way of doing it would be:

System.getProperties().put( "socksProxyPort", "1080");
System.getProperties().put( "socksProxyHost" ,"proxy.host.address");
ApplicationContext context = . . .

[sseaman]

Thanks for the info!

Question: Won't this proxy anything that uses commons-net then? I only want the proxy for this one external FTP connection as I have other FTP connections to other internal servers that do not need to go through our proxy.

[oleg.zhurakousky]

No, its per JVM instance unless other FTP connections are part of the same JVM instance.

[sseaman]

They will be part of the same JVM. I have multiple FTP connections to various servers (internal and external) occurring within the same execution.

I'm looking at using the ProxyFtpSessionFactory that was in a previous post that you commented on:
http://forum.springsource.org/showth...hannel-adapter

If it works I think it would be a good addition to a future release of Spring Integration.

[oleg.zhurakousky]

Could you please raise a JIRA Improvement request https://jira.springsource.org/browse/INT. We might have to change the underlying library if commons-net is not supporting it.

Thanks