[Nginx] perl module get an empty body

[darkweaver871]

Hi all,

I'm using Nginx as a reverse proxy and I use Nginx perl module to
inspect my requests and redirect to a different upstream.
It works well but some of request_body are empty and others just make
nginx timeout.

Here is my nginx.conf:

user www-data;
worker_processes 4;
pid /var/run/nginx.pid;

events {
	worker_connections 768;
	# multi_accept on;
}

http {

	##
	# Basic Settings
	##

	sendfile on;
	tcp_nopush on;
	tcp_nodelay on;
	keepalive_timeout 65;
	types_hash_max_size 2048;
	# server_tokens off;

	# server_names_hash_bucket_size 64;
	# server_name_in_redirect off;

	include /etc/nginx/mime.types;
	default_type application/octet-stream;

	##
	# Logging Settings
	##

	access_log /var/log/nginx/access.log;
	error_log /var/log/nginx/error.log;

	##
	# Gzip Settings
	##

	gzip on;
	gzip_disable "msie6";

	# gzip_vary on;
	# gzip_proxied any;
	# gzip_comp_level 6;
	# gzip_buffers 16 8k;
	# gzip_http_version 1.1;
	# gzip_types text/plain text/css application/json
application/x-javascript text/xml application/xml application/xml+rss
text/javascript;

	##
	# Virtual Host Configs
	##

        perl_modules /opt/test/perl/;
        perl_require switcher_test.pm;
        perl_set $test switcher_test::handler;

        log_format cestate '$remote_addr,$http_x_forwarded_for -
$remote_user [$time_local] "$request" $status $body_bytes_sent
"$http_referer" "$http_user_agent" $request_time # $test';
        access_log /var/log/nginx/cestate.log cestate;

	include /etc/nginx/conf.d/*.conf;
	include /etc/nginx/sites-enabled/*;
}

My proxy.conf:
proxy_redirect          off;
proxy_set_header        Host            $host;
proxy_set_header        X-Real-IP       $remote_addr;
proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header        X-Forwarded-Host $host;
proxy_set_header        X-Forwarded-Server $host;
client_max_body_size    21474836470;
client_body_buffer_size 128k;
proxy_connect_timeout   90;
proxy_send_timeout      90;
proxy_read_timeout      3600;
proxy_buffers           32 8k;
proxy_max_temp_file_size 0;


My script:
#!/usr/bin/perl

package switcher_test;
use nginx;


sub handler {
        my $r = shift;
        if($r->has_request_body(sub{})) { return 3 };
	return 4;

}

1;
__END__

My vhost on test the value of $test and proxy_pass to the good
upstream.

When Nginx timeout, I have the following log:
2012/08/10 11:56:15 [alert] 30570#0: *1 zero size buf in output t:1 r:0
f:0 0000000001481728 0000000001481728-0000000001481728 0000000000000000
0-0 while sending request to upstream, client: xxx.xxx.xxx.xxx, server:
www.test.com, request: "POST /test.php HTTP/1.1", upstream:
"http://xxx.xxx.xxx.xxx:80/test.php", host: "www.test.com"
2012/08/10 11:56:41 [info] 30580#0: Using 32768KiB of shared memory for
push module in /etc/nginx/nginx.conf:63

Has someone any idea of what's going on ?

Thanks.

Rémi

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,229560,229560#msg-229560