Question

I know that I can set proxyhost and proxyport for the java application
to work through a normal proxy server. But (at least) on corporate
networks there are authentication schemes on proxies. I am using
URLConnection to download a zip file from internet inside
corporate network. I am using Weblogic as server for my application.
I am aware of HTTPClient that claims to deal with the
NTLM proxy, but how? I have found no
examples nor tutorials that deal with this.

I have been searching web really for a while now and have found out that
NTLM proxy authentication is Microsoft’s authentication scheme that has
no public specification? Is it really true that Java is not capable of
dealing with corporate networks (or corporate proxies)? Do I really need
to go to the JSP ect. road on this one?

1. Is it possible to use java application client to access url for download a file
   through NTLM proxy server? How? Example would really be appreciated.

this is the error that I get

java.io.IOException: Stream closed.
at java.net.PlainSocketImpl.available(PlainSocketImpl.java:428)
at java.net.SocketInputStream.available(SocketInputStream.java:217)
at java.io.BufferedInputStream.read(BufferedInputStream.java:321)
at weblogic.net.http.KeepAliveStream.read(KeepAliveStream.java:86)
at java.io.FilterInputStream.read(FilterInputStream.java:90)
at be.azvub.ext.bcfidownloder.Download.downloadZipFile(Download.java:131)

Answer 1

have you tried ntlmaps? this is an solution in sourceforge.. it works quite well.