how to completely disable request body buffering

[Phani Sreenivasa Prasad]

Hi B.R

Please find the nginx confiuration below that we are using. and any help
would be greatful.

nginx -V
=================
nginx version: nginx/1.8.0
built with OpenSSL 1.0.2h-fips  3 May 2016
TLS SNI support enabled
configure arguments: --crossbuild=Linux::arm
--with-cc=arm-linux-gnueabihf-gcc --with-cpp=arm-linux-gnueabihf-gcc
--with-cc-opt='-pipe -Os -gdwarf-4 -mfpu=neon
--sysroot=/work/autobuild/project_hub_release/nginx/service/001.1635A/sol_aux_build/sbq_sysroot'
--with-ld-opt=--sysroot=/work/autobuild/project_hub_release/nginx/service/001.1635A/sol_aux_build/sbq_sysroot
--prefix=/usr --conf-path=/etc/nginx/nginx.conf --sbin-path=/usr/sbin/nginx
--pid-path=/var/run/nginx.pid --lock-path=/var/run/lock/nginx.lock
--error-log-path=/var/log/nginx/error.log
--http-log-path=/var/log/nginx/access.log
--http-client-body-temp-path=/var/tmp/nginx/client-body
--http-proxy-temp-path=/var/tmp/nginx/proxy
--http-fastcgi-temp-path=/var/tmp/nginx/fastcgi
--http-scgi-temp-path=/var/tmp/nginx/scgi
--http-uwsgi-temp-path=/var/tmp/nginx/uwsgi --user=www-data --group=www-data
--with-ipv6 --with-http_ssl_module --with-http_gzip_static_module
--with-debug

nginx.conf
=================
worker_processes  1;

events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

    sendfile        on;

    keepalive_timeout  65;

    server {
        listen       80;
        listen       [::]:80;
        listen       8080;
        listen       [::]:8080;
        listen       127.0.0.1:14200;           #usb port
        listen       443 ssl;
        listen       [::]:443 ssl;
        listen       127.0.0.1:14199;            # for internal LEDM
requests to bypass authentication check
        listen       127.0.0.1:6015;            # websocket internal port to
talk to nginx.

        server_name  localhost;

        include /project/ram/secutils/*.conf;
       
        include /project/rom/httpmgr_nginx/*.conf;

        fastcgi_param PATH_INFO $fastcgi_path_info;
        include fastcgi_params;

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
   
}

proj_server.conf:
=================

server {
      listen [::]:5678 ssl ipv6only=off;

      ssl_certificate /project/rw/cert_svc/dev_cert.pem;
      ssl_certificate_key /mnt/encfs/cert_svc/dev_key.pem;
      ssl_protocols TLSv1 TLSv1.1 TLSv1.2;

      gzip on;
      gzip_types *;
      gzip_min_length 0;

      # If the incoming request body is greater than client_max_body_size,
      # NGINX will return 413 request entitiy too large.
      # Setting to 0 will disable this size check.
      client_max_body_size 0;

      # By default, NGINX will try to buffer up the entire request body
before
      # sending it to the backend server.
      # Turning it off should stop this behavior and pass the request on
immediately.
      fastcgi_request_buffering off;

      # By default, NGINX will try to buffer up the entire response before
      # sending it to the client.
      # Turning it off should stop this behavior and pass the response on
immediately.
      fastcgi_buffering off;

      # Default timeout is 60s and there is no way to disable the read
timeout.
      # If a read has not been performed in the specified interval
      # a 504 response is sent from NGINX to the client.
      # This could happen if there is a flow stoppage in the upstream.
      fastcgi_read_timeout 7d;

      # Default timeout is 60s and there is no way to disable the send
timeout.
      # If NGINX has not sent data to the FastCGI server in the specified
interval
      # a 504 response is sent from NGINX to the client.
      # This could happen if there is a flow stoppage in the upstream.
      fastcgi_send_timeout 7d;

      # This server's listen directive says to use SSL on port 5678.
      # When HTTP requests come to an SSL port NGINX throws a 497 HTTP
Request Sent to HTTPS Port
      # Since our requests will be HTTP on port 5678, NGINX will throw error
code 497
      # To fix this, when NGINX throws 497, we tell it to use the status
code
      # from the upstream server.
      error_page 497 = $request_uri;

      fastcgi_param PATH_INFO $fastcgi_path_info;
      fastcgi_param HOST $host;
      include fastcgi_params;

      location = /path/to/resource1 {
          fastcgi_pass 127.0.0.1:14052;
      }

      location = /path/to/resource2 {
          fastcgi_pass 127.0.0.1:14052;
      }

}

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,269196,269353#msg-269353