nginx reverse proxy websocket, some connection disconnected with 1006

[weishuaiwang]

i debug websocket service with ip:port, it runs well, this is important.
but when i change to nginx for proxy websocket, it happens some connections just closed when request in (i watch the terminal),and the chrome,firefox console return readystate of 1006,but some other connected correctly.

here is my code:

nginx

map $http_upgrade $connection_upgrade {
     default upgrade;
     ''      close;
}

upstream websocket {
    server 172.17.0.1:9099 weight=5 max_fails=3 fail_timeout=30s;
    keepalive 16;
}

server {
    listen 80;
    server_name mysite.com;

    location /ws {
         try_files $uri $uri/ @workman;
    }

    location @workman {
        # proxy_set_header HTTPS "on";
        proxy_pass http://websocket;
        proxy_read_timeout 300s;
        proxy_send_timeout 300s;

        proxy_http_version 1.1;
        proxy_set_header Host $http_host;
        proxy_set_header Scheme $scheme;
        proxy_set_header SERVER_PORT $server_port;
        proxy_set_header REMOTE_ADDR $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_redirect off;
    }

    location / {
        proxy_pass http://websocket;
        proxy_connect_timeout 300s;

        proxy_set_header Host $http_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Scheme $scheme;
    }
}

[ghost]

You will have more success finding out why connections are closed with nginx on an nginx specific forum or issue tracker.

[garyburd]

This is a nginx issue per previous comment.