Matthew Barnett added the comment:
The problem is the "(?:[^<]+|<(?!/head>))*?".
If I simplify it a little I get "(?:[^<]+)*?", which is a repeat within a
repeat.
There are many ways in which it could match, and if what follows fails to match
(it doesn't because there's no "
Aldwin Pollefeyt added the comment:
neither the banner contains "
Aldwin Pollefeyt added the comment:
When I run the regex on https://regex101.com/, after some small adjustments
("HTTP\/1\.0" and "\/head"), it mentions 'Catastrophic backtracking has been
detected and the execution of your expression has been halted.' I don't know
much about regex, but it s
aixian le added the comment:
the code is:
banner = "HTTP/1.0 404 Not Found\r\nDate: Mon, 17 Jun 2019 13:15:44
GMT\r\nServer:\r\nConnection: close\r\nContent-Type:
text/html\r\n\r\n404 Not
Found\r\n404 Not Found\r\nThe requested URL
/PSIA/index was not found on this server.\r
New submission from aixian le :
the code is:
banner = "HTTP/1.0 404 Not Found\r\nDate: Mon, 17 Jun 2019 13:15:44
GMT\r\nServer:\r\nConnection: close\r\nContent-Type:
text/html\r\n\r\n404 Not
Found\r\n404 Not Found\r\nThe requested URL
/PSIA/index was not found on this server.
