Digest nonce reuse

I have written a PHP client that access a REST web service that require Digest Authentication.

While stressing the server, I notice on the server log that every request ask for Authentication (401). Then the correct call is done.

If I test the web service with Firefox, the first request ask for Authentication and subsequent requests use the same nonce and are successful. There's an expiration for the nonce and after a few requests a new nonce is return by the server.

When Digest Authentication is detected, is it possible to reuse the last nonce by default when sending another request?

I think that is possible but I would need to study the logic of reuse of authorization responses.

Meanwhile you can just take a look at the Authorization request header generated by the class and add it to the request headers instead of specifying the authentication credentials.

Good, this part is working.

What I did in my wrapper class.

private $lastAuthorizationHeader = "";
...

$arguments["Headers"]["Authorization"] = $this->lastAuthorizationHeader;
$this->http->SendRequest( $argument );
...
$error = $this->http->ReadReplyHeaders($headers); // this is where the Authorization header is set
...
$this->lastAuthorizationHeader = $this->http->request_headers["Authorization"];

So this is working if you do several requests to the same uri. That's what I come through in my stress test with bulk insert (POST) of data to the same uri.

Thank you for your quick answer.