on 04-24-2007 8:10 AM
I need to access an external FTP server via our WAN proxy server.
I do not believe that xMII is properly attempting to access the Proxy Server, as I require. It must go via this proxy, or it cannot go at all, since the target FTP site it outside our WAN.
Note 1: I can connect successfully to the remote FTP server using Internet Explorer (ie: not within xMII).
Note 2: I can connect successfully to the remote FTP server using the program CuteFTP (ie; not within IE). However, I cannot connect from a simple transaction using, say, the FTP GetFileList action block.
I cannot do it successfully from an xMII transaction. The only error I see, after a small timeout, is "FTP error: Could not connect server".
I have set the Proxy Server connection criteria (ProxyHost, ProxyPort, ProxyUsername, ProxyUserPassword) in the xMII Admin menu, and have unchecked the ProxyBypassLocal check box.
However, polling via a netstat command whilst the transaction is executing, it appears that xMII is attempting to access the ftp server directly (as I specified within the transaction), and NOT via the proxy server I have specified.
Are there any tricks here?
Some further info;
The proxy server handles both http and ftp, but not socks unfortunately. There is not a socks server available.
Kevin.
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I think the FTP library xMII uses (Apache commons-net) uses Socks internally.
A few options:
1. If you simply need to download a file, you can try the URL-based approach with HTMLLoader (for a text file) or ImageLoader (for a binary file) - the URL format you can find by Googling, but an example is:
ftp://user01:pass1234@ftp.foo.com/README.txt;type=i
Note: I've never tried it, and you'll need to set the following properties to point to your proxy server (xMII will automatically do it for the http ones):
ftp.proxyHost (default: <none>)
ftp.proxyPort (default: 80 if ftp.proxyHost specified)
ftp.nonProxyHosts (default: <none>)
2. You could try using something like the Hummingbird SOCKS server on the xMII server to "socks-ify" your existing TCP/IP stack.
- Rick
URLConnection urlc = url.openConnection();
InputStream is = urlc.getInputStream(); // To download
OutputStream os = urlc.getOutputStream(); // To upload
Rick:
Tried those. Actually xMII doesn't start when I have them in there!
I notice there are similar properties available for http / https / ftp. So, in xMII System Administration, what is the scope for the Proxy settings? Do they apply for http and https and ftp?
When I use CuteFTP, then run netstat, I see an entry there
<proxy address>:ftp ESTABLISHED
So this indicates that CuteFTP has been directed via the proxy server.
However, when I use xMII (run the transaction), then run netstat, I see an entry there
<ftp.myExternalFTPSite.com.au>:ftp SYN_SENT
So this indicates that xMII is trying to connect directly to the ftp site that I specified within the transaction, and NOT via the proxy server at all.
Note that in CuteFTP, I set global properties, telling it what proxy server / port etc, as I did also in xMII System Administration.
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Hi Rick,
I don't believe so, but I can find out. The thing is that FTP comms are fine using something like CuteFTP, and using the exact proxy settings that I have in xMII. The issue appears to be that xMII is not redirecting any traffic to the proxy server at all, and netstat seems to confirm this.
Regards
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Kevin:
After some googling, possibly you're going to need to get the following system properties set:
socksProxyPort 1080
socksProxyHost yourproxhostaddressproxy.host.address
I don't know what values you need - you'll need to check with your IT folks.
You can put these in:
Lighthammer\WEB-INF\classes\system.properties
- Rick
Hi, Kevin.
Do you have to use different proxy settings (e.g. server, port) for FTP than HTTP?
- Rick
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