Meinheld + NGINX proxy causes content truncation

[tylfin]

Hey guys,

Had an ELB -> NGINX -> Gunicorn + Meinheld and kept getting a net::ERR_CONTENT_LENGTH_MISMATCH when I disabled cache via chrome console. Once I removed Meinheld everything worked. Not sure what the issue was, but here's the NGINX config and the run command.

Run command:

gunicorn -w $(($(nproc) * 2 + 1)) -t 60 --worker-class="egg:meinheld#gunicorn_worker" --bind 0.0.0.0:5000 app:app

Proxy config:

    map $http_upgrade $connection_upgrade {
        default        "upgrade";
        ""            "";
    }
    
    server {
        listen 80;

    	gzip on;
	    gzip_comp_level 4;
	    gzip_types text/html text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;

        if ($time_iso8601 ~ "^(\d{4})-(\d{2})-(\d{2})T(\d{2})") {
            set $year $1;
            set $month $2;
            set $day $3;
            set $hour $4;
        }
        access_log /var/log/nginx/healthd/application.log.$year-$month-$day-$hour healthd;

        access_log    /var/log/nginx/access.log;
    
        location / {
            proxy_pass            http://docker;
            proxy_http_version    1.1;
    
            proxy_set_header    Connection            $connection_upgrade;
            proxy_set_header    Upgrade                $http_upgrade;
            proxy_set_header    Host                $host;
            proxy_set_header    X-Real-IP            $remote_addr;
            proxy_set_header    X-Forwarded-For        $proxy_add_x_forwarded_for;
        }
    }

and NGINX.conf

user  nginx;
worker_processes  auto;

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

pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

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

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

    log_format  healthd '$msec"$uri"$status"$request_time"$upstream_response_time"$http_x_forwarded_for';

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

[gerasim13]

I had the same situation, after switching to another worker problems got away

[tylfin]

@gerasim13 I ended up removing meinheld too.

[agalera]

use meinheld patch?

maybe it is possible to be of interest

bottlepy/bottle#896

[methane]

It can be happened when app set wrong Content-Length header.

I close this issue because it is too outdated.
Please provide reproducible example next time it happened.