nginx gives 504 error after 500 requests - nginx

Question

I'm pretty new to using nginx and I'm having an issue where after requesting 500 pages from nginx running locally on my computer I start getting 504 Gateway Timeout error.
My nginx.conf file looks like this
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
sendfile on;
keepalive_timeout 65;
proxy_buffer_size 128k;
proxy_buffers 4 256k;
proxy_busy_buffers_size 256k;
server {
listen 80;
server_name localhost;
charset utf-8;
location / {
root html;
index index.php index.htm;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
location ~ \.php$ {
try_files $uri =404;
fastcgi_split_path_info ^(.+\.php)(/.+)$;
root html;
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_read_timeout 5s;
include fastcgi_params;
}
}
server {
listen 80;
server_name local-testserver;
error_log logs/local-testserver.error.log;
access_log logs/local-testserver.access.log;
keepalive_timeout 1s;
location / {
root C:/Code/PHP/TestServer;
index index.php;
}
location ~ \.php$ {
root C:/Code/PHP/TestServer;
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
}
}
}
And index.php in TestServer/ just contains
<?php
echo "hi";
?>
I'm testing this with the URLRequest class in AS3, but I actually tried manually sending 500 requests to see if that made a difference and in both cases the 501st request got a 504 error. Restarting the server allows me to make another 500 requests.
Any ideas on what might be happening or how to fix it?

Answer 1

Turns out this isn't an nginx issue at all but a FastCGI one. Setting PHP_FCGI_MAX_REQUESTS=0 as an environment variable before starting FastCGI should allow any number of requests.