nginx config for mirror nor working

i want mirror some websocket requst to port 7000 but this config not wrorking, i dont know what's reasson.

worker_processes 1;
events {
    worker_connections 1024;
}
http { 
    server {
        listen 5000;
        server_name ws.serverlab.ca;

        location / {
            mirror /mirror;
            proxy_pass http://something//;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_read_timeout 86400;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header Host $host;
        }
        location /mirror {
            proxy_pass http://127.0.0.1:7000/;
        }
    }
}