Using Digest Auth and Sending POST data with curl

Question

I have a question regarding HTTP Digest Auth using curl, and sending post data at the same time.

I have a REST API, and each resource in it needs authentication. I access my resources from my website using php curl. Each resource needs to authenticate using digest.

I'm using CURLAUTH_DIGEST for this, and it usually works like a charm.

The problem is when I try to send additional data in POST, using CURLOPT_POSTFIELDS, that data will not be sent alongside with digest auth information. Why is this? How can I fix this?

I'm using PHP 5.4.3 with php curl 7.25.0

Answer 1

There is absolutely no problem to combine Digest authentication with POST requests.

Make sure to double check if you are suppose to do:

1. a basic POST (the equivalent of -X POST -d 'body-content-here' with curl CLI),
2. or a multipart POST (e.g. -F image_file=@"foo.jpg" to upload a given file).

Also what I greatly recommend is to interact with your API via curl command-line tool and use the --libcurl request.c: it will write into this output C file a convenient recap of all the options used to perform the request, and then you will simply have to copy/adapt them on your side.

At last, feel free to refer to this PHP code sample that illustrates how to perform such calls.