Re: Host

From:
"Daniel Pitts" <googlegroupie@coloraura.com>
Newsgroups:
comp.lang.java.programmer
Date:
10 Jan 2007 22:34:56 -0800
Message-ID:
<1168497296.673541.53450@o58g2000hsb.googlegroups.com>
Alex Hunsley wrote:

ck wrote:

Alex Hunsley wrote:

The catch I was talking about is the need to start the server every 6
hours for free accounts on eatj.

Couldn't we set up a servlet somewhere else to access their web
interface and automatically restart the servlets?

:))


Well that's exactly what I was talking about. I tried it using commons
http client. Though it results in 401 error. (mostly, redirect by the
server). I have tried to set follow redirect but that results in
exception.
If anyone is interested I can put the code that fails.


As Daniel pointed out, you may be missing a cookie. The other classic
things they might be looking for are:

1) referrer string - if it's not apparently the correct URL from their
site going to their form submission URL (as referrer), they might block
2) user agent - if it doesn't look like some sort of standard browser,
they might also block

To get under the bonnet and see what HTTP traffic is doing, I recommend
something like the Proxomitron web proxy: you set your browser to use
this proxy, and then check out the Proxomitron log window (turn on
things like 'view posted data' too) - very handy for seeing what cookies
are set, the exact headers flying about, where a redirect happened,
etc., when you visit a site and do things.

Proxomitron is free (as in beer) and funky:
http://www.proxomitron.info/

Also there's a decent Java HTTP proxy called Charles, but it's not free
- you have to buy it after N days trial.

lex

I suggest using Ethereal to monitor traffic. No need to set up a
proxy, and you can monitor other types of communication, not just HTTP.

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