Http Client with Curl Adapter combined with malformed return headers results in 'Error parsing body' - Exception

[kasitmp]

I saw this issue on some major webpages.

In Zend\Http\Client\Adapter\Curl there is a line where the 'Transfer-Encoding: chunked' is removed so it will not be interpreted from the Zend\Http\Response decodeChunkedBody function, because curl already decodes the chunked body.

Here is the example header from buzzfeed.com:

HTTP/1.1 200 OK
Server: Apache
Content-Type: text/html
X-BuzzFeed: webdr08
Vary: Accept-Encoding
Content-Encoding: gzip
Cache-Control: max-age=3
Date: Tue, 23 Sep 2014 14:42:19 GMT
Transfer-Encoding:  chunked

As you can see there are two whitespaces between 'Transfer-Encoding:' and 'chunked' causing the stripos($this->response, "Transfer-Encoding: chunked\r\n") to become false.

As a result the decodeChunkedBody function gets called and throws an exception.