# IPv4
listen      *:52223 ssl;
listen      *:52227 ssl;
listen      *:52229 ssl;
listen      *:52231 ssl;
# IPv6
listen      [::]:52223 ssl;
listen      [::]:52227 ssl;
listen      [::]:52229 ssl;
listen      [::]:52231 ssl;
# Enable HTTP/2.
http2 on;
# Set timeouts for HTTP/2.
keepalive_timeout 5;
client_header_timeout 5;