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Re: Intercepting a HTTP request [message #171665 is a reply to message #171649]

Fri, 14 January 2011 23:26

Thomas 'PointedEars'
Messages: 701
Registered: October 2010

Karma:

Senior Member

Michaelprem123 wrote:

> I am using PHP, programming a mashup against MBrainz and last.fm (it
> is a teaching related exercise)
>
> I am trying to use a DOMDocument::load to send an API method on a url
> parameter, but get an error back.
> "HTTP request failed! HTTP/1.0 400 Bad Request"

The reason for that might also be that a POST request is expected, or that a
parameter is missing.

> The same url reacts perfectly when sent on an address line of a
> browser. Seems like a User Agent related problem, but setting the user
> agent of my PHP script did not help.
>
> How do I intercept the HTTP request that php DOMDocument sends to the
> last.fm server to get a closer look at whats going on?

I would use the netcat[tm] to listen at a free local port (like 1337) and
direct DOMDocument::load() to localhost at that port:

$ nc -lp 1337 &
[1] 23953

$ php -r '$x = new DOMDocument(); $x->load("http://localhost:1337/");'
GET / HTTP/1.0
Host: localhost:1337

[1]+ Stopped nc -lp 1337
^C

<http://php.net/manual/en/domdocument.load.php#91384> shows how to set the
User-Agent header field for the DOMDocument HTTP request (as your script's
header() has nothing to do with that).

PointedEars
--
var bugRiddenCrashPronePieceOfJunk = (
navigator.userAgent.indexOf('MSIE 5') != -1
&& navigator.userAgent.indexOf('Mac') != -1
) // Plone, register_function.js:16

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[Message index]

		Intercepting a HTTP request By: Michaelprem123 on Fri, 14 January 2011 08:18
		Re: Intercepting a HTTP request By: Luuk on Fri, 14 January 2011 08:32
		Re: Intercepting a HTTP request By: alvaro.NOSPAMTHANX on Fri, 14 January 2011 08:34
		Re: Intercepting a HTTP request By: Thomas 'PointedEars' on Fri, 14 January 2011 23:26

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