what is wrong live stream http conf

[baroc]

have created the following simple conf ..

#user nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;
pid        logs/nginx.pid;
events {
    worker_connections 1024;
}

http {
	include       mime.types;
	default_type  application/octet-stream;
	limit_conn_zone $remote_user zone=peruser:10m;


	log_format  main '$remote_addr - $remote_user [$time_local] "$request" '
			'$status $body_bytes_sent "$http_referer" '
			'"$http_user_agent" "$http_x_forwarded_for"';
	access_log  /var/log/nginx/access.log  main;

    sendfile        on;
    #tcp_nopush     on;
    keepalive_timeout  65;
    #gzip  on;


server {
    listen       9901;
    server_name  5.152.204.130;

    location = / {
	auth_basic           "Restricted";
	auth_basic_user_file /usr/local/nginx/users/user;
	limit_conn peruser	1; 
	proxy_pass		http://192.168.1.200:44444;

	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_redirect		off;
	proxy_buffering		off;
	proxy_ignore_client_abort   off;
	proxy_connect_timeout 	180;
	proxy_send_timeout		21600;
	proxy_read_timeout		21600;
	proxy_max_temp_file_size	0;


        }

#if ($http_user_agent ~* "vlc" ) {return 403; }
    error_page   403 500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/local/nginx/html;
    }

}

}



Connected to this conf after 50 people are starting to freeze.
(  I saw the other stream in the port flowed smoothly but freezes when I
connect nginx port. )

I wonder where did I go wrong?
  thank you in advance ....

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,232525,232525#msg-232525