Add support for CURLINFO_HEADER_OUT #261
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Context
When
curl_setopt($ch, CURLINFO_HEADER_OUT, true)has been called before a request is sent you should then be able to callcurl_getinfo($ch, CURLINFO_HEADER_OUT)after the request to get a description of the request that's been sent. Prior to this patch callingcurl_getinfo($ch, CURLINFO_HEADER_OUT)with VCR enabled would actually cause an exception. To compound the issue the error message was also quite confusing (see #201 for an example).What has been done
I've taken a second run at solving this as it was still causing problems for me with the PayPal SDK. My previous attempt was #198. I have similar misgivings about this version as it does break down some separation of concerns, but I think that's inevitable with this. The response object really does have to know about the request object.
This also required a function to format the Request as a string. I've mimicked curl's output for a simple GET request, but doing it for a POST with a body would take much more work. It's got enough there fulfil my purposes at the moment. It feels like the sort of thing that there may be a standard PHP function out there to do, but I haven't found one.
How to test
Unit tests have been added.