Zend_Http_Client Requests failing with Fiddler Proxy

Question

I've written a simple spider to test various things with Fiddler. The script makes a few requests with Zend_Http_Client->request() using the same instance of the Zend_Http_Client class ($client in the example below).

When using Fiddler and Zend_Http_Client, only the first Zend_Http_Client->request() works; subsequent requests fail with "Unable to read response, or response is empty". Here's my Zend_Http_Client configuration with Fiddler:

$config = array(
    'adapter'       => 'Zend_Http_Client_Adapter_Proxy',
    'proxy_host'    => '127.0.0.1',
    'proxy_port'    => 8888,
    'timeout'       => 60,
    'useragent'     => 'Local Site Spider Test',
    'keepalive'     => true,
    'sslusecontext' => true
);

$client = new Zend_Http_Client('http://www.site.com/',  $config);

Here's a simplified example of what would fail, using $client from above:

$response = $client->request();
echo $response->getHeadersAsString();

$client->setUri('http://www.site.com/file.html');
$response = $client->request();
echo $response->getHeadersAsString();

The spider itself works 100% as intended when not using a proxy, so the code itself is fine. Fiddler is also working, capturing all requests from all processes (tested with WinInet as well as various browsers).

Maybe something is wrong with the website you're trying to access? Your code works fine for me - tested on 2 different machines (ZF 1.11.3, Fiddler 2.3.2.4 beta). 1st request: `$client = new Zend_Http_Client('http://stackoverflow.com/', $config);` and 2nd: `$client->setUri('http://stackoverflow.com/questions/5070863/zend-http-client-requests-failing-with-fiddler-proxy');` — yarson, Feb 22 '11 at 18:23

Zend_Http_Client Requests failing with Fiddler Proxy

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