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Can't flush buffer with NginX


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I'm trying to proof a comet style page and to start it up I thought I would set a simple counter in PHP to output 0->3 with a one second delay between each output and flush it to screen each second.  Problem is nothing I have tried has actualy managed to flush the buffer out.  It just sits there with the loading spinner and after 4 seconds dumps the lot onto the screen at once.  I have been diging about and have set the nginx config to the following:

user www-data;

worker_processes  1;

error_log  /var/log/nginx/error.log;

pid        /var/run/nginx.pid;

events {

    worker_connections  1024;

     multi_accept on;


http {

    include       /etc/nginx/mime.types;

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

    sendfile        on;

    tcp_nopush     on;

    #keepalive_timeout  0;

    keepalive_timeout  65;

    tcp_nodelay        on;


#    fastcgi_keep_conn on;

    proxy_buffering off;

    gzip off;


    gzip_disable "MSIE [1-6]\.(?!.*SV1)";

    include /etc/nginx/conf.d/*.conf;

    include /etc/nginx/sites-enabled/*;


I had to comment out the fastcgi_keep_con on; as this wasn't recognised.


The following is the PHP page.


ini_set('zlib.output_compression', 'Off');





header("Cache-Control: no-cache, must-revalidate");




    for ($i=0;$i<4;$i++) {

      echo "$i <br>";







Any ideas what I'm missing here?

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