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Author Topic: [Solved] Can't get website becasue of Cloudflare  (Read 413 times)

krexon

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[Solved] Can't get website becasue of Cloudflare
« on: October 13, 2022, 03:42:35 pm »
From few weeks I can't get anything from one website, because they changed something in cloudflare configuration. There is '403 Forbidden' response.
I use fphttpclient and opensslsockets. I tried Indy - the same result.
I tried curl and it doesn't work either.
Everything works in web browsers or API tersters like Insomnia.
After some research I read that cloudflare tries to block bots. I made test in curl-impersonate - it works.
Then I made test in Delphi using System.Net.HttpClient - it works like a charm.
Maybe cloudflare blocks OpenSSL 1.0.2u, which I use in fphttpclient and Indy?. This is the newest OpenSSL version for that units. There is no support for newer OpenSSL 1.1.1 or LibreSSL.

I did another test with openssl from command line (openssl s_client -connect www.flightsfrom.com:443).
Version 1.0.2u gives error: 1380:error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure:.\ssl\s23_clnt.c:802:
Version 1.1.1q works fine.

Is there possibility to make it work in Lazarus?

URL to test: https://www.flightsfrom.com/airports/london

EDIT:
I used FPC 3.3.1 with OpenSSL 1.1.1 libraries and everything works :)
Libraries from this site: http://wiki.overbyte.eu/wiki/index.php/ICS_Download#Download_OpenSSL_Binaries_.28required_for_SSL-enabled_components.29
« Last Edit: October 14, 2022, 08:12:59 am by krexon »

 

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