Fabiano Furtado Pessoa Coelho
June 29, 2023 03:30PM
Hi...

I have one peculiar issue with NGINX 1.22.0 + "proxy_intercept_errors
on;" + custom 302 "error_page".

Here is my simplified NGINX config:

http {
error_page 301 302 /30x.html;
server {
location /30x.html {
root /etc/nginx/custom_error_pages;
sub_filter_once off;
sub_filter '*HTTP_STATUS_CODE*' '$status';
internal;
}
location /mysystem {
rewrite ^(.*)$ / break; # remove "/mysystem" and only send "/" to backend
proxy_intercept_errors on;
proxy_pass http://php_server;
}
}
}

Using both "proxy_intercept_errors on;" and "error_page" directive, I
have HTTP 302 response from my php backend server (OK!), but without
HTTP new "location" header:

$ curl -v https://foo/mysystem
...
< HTTP/2 302
< date: Thu, 29 Jun 2023 17:48:31 GMT
< content-type: text/html
< strict-transport-security: max-age=63072000
...

Why? If I turn off the "proxy_intercept_errors" directive or remove
the line "error_page 301 302 /30x.html;", it works:

$ curl -v https://foo/mysystem
...
< HTTP/2 302
< date: Thu, 29 Jun 2023 18:05:42 GMT
< content-type: text/html; charset=UTF-8
< location: https://bar
< strict-transport-security: max-age=63072000
...

Is this normal? Why can't I have a 302 custom error page using
"proxy_intercept_errors on;"?

Thanks in advance.
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Subject Author Posted

Possible bug with "proxy_intercept_errors on; " + "error_page 301 302"?

Fabiano Furtado Pessoa Coelho June 29, 2023 03:30PM

Re: Possible bug with "proxy_intercept_errors on; " + "error_page 301 302"?

Maxim Dounin June 29, 2023 06:02PM

Re: Possible bug with "proxy_intercept_errors on; " + "error_page 301 302"?

Fabiano Furtado Pessoa Coelho June 29, 2023 06:12PM

Re: Possible bug with "proxy_intercept_errors on; " + "error_page 301 302"?

Fabiano Furtado Pessoa Coelho June 30, 2023 12:26PM

Re: Possible bug with "proxy_intercept_errors on; " + "error_page 301 302"?

Maxim Dounin June 30, 2023 08:46PM

Re: Possible bug with "proxy_intercept_errors on; " + "error_page 301 302"?

Fabiano Furtado Pessoa Coelho June 30, 2023 09:16PM



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