Absolute maximum value for proxy_read_timeout

[Duane Mulder]

Hello All:

We have an issue where I need to increase the proxy_read_timeout to a
large value.  Currently its 300s.  What is the the maximum supported
value  ?

I am running nginx 1.0.5, could I be able to manually compile a larger
value in ?

snippit of conf
       listen       10.222.3.88:80;
        server_name  localhost;
        client_max_body_size 2500m;
        proxy_read_timeout 300;
        proxy_connect_timeout 75;
        keepalive_timeout 75;


Regards
Duane