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Re: Can server tell I'm using curl?

From: Paul Gilmartin via curl-users <>
Date: Tue, 6 Apr 2021 15:14:45 -0600

> On 2021-04-06, at 14:57:56, Dan Fandrich wrote:
> On Tue, Apr 06, 2021 at 01:37:42PM +0200, Gilles wrote:
>> Is the command wrong, or is the server somehow able to tell I'm using curl to
>> forbid its use
> I've heard that some sites check things like the order of headers being sent as
> well as various HTTP/2 options and even use TCP fingerprinting to try to ferret
> out robots masquerading as browsers. curl can't hide itself from sites doing
> that sort of client detection, but fortunately, that seems to be rare.
What about reCAPTCHA?:

-- gil

Received on 2021-04-06