Здравствуйте. Вот конфиг моего сайта map $http_upgrade $connection_upgrade { default

upgrade;
'' close;
}

server {
listen 80;
server_name domain.com www.domain.com;
return 301 https://$host$request_uri;
}


server {
listen 443 ssl;
server_name domain.com www.domain.com;
ssl on;

ssl_certificate /etc/letsencrypt/live/domain.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/domain.com/privkey.pem;
ssl_trusted_certificate /etc/letsencrypt/live/domain.com/chain.pem;

ssl_stapling on;
ssl_stapling_verify on;

location / {
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_pass http://unix:/tmp/sock.sock;
}


location /ws {
proxy_pass http://unix:/tmp/sock.sock;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
proxy_read_timeout 86400s;
}
}

Почему /ws сбрасывается через 100 сек?

debug_connection + tcpdump