nginx-proxy-manager/backend/templates/stream.conf

# ------------------------------------------------------------
# {{ incoming_port }} TCP: {{ tcp_forwarding }} UDP: {{ udp_forwarding }}
# ------------------------------------------------------------
{% if proxy_protocol_enabled == 1 or proxy_protocol_enabled == true -%}
{% capture listen_extra_args %}proxy_protocol{% endcapture -%}
{% endif -%}

{% if enabled %}
{% if tcp_forwarding == 1 or tcp_forwarding == true -%}
server {
  listen {{ incoming_port }} {{ listen_extra_args }};
{% if ipv6 -%}
  listen [::]:{{ incoming_port }} {{ listen_extra_args }};
{% else -%}
  #listen [::]:{{ incoming_port }}{{ listen_extra_args }};
{% endif %}

  proxy_pass {{ forwarding_host }}:{{ forwarding_port }};

{% include '_proxy_protocol.conf' %}

  # Custom
  include /data/nginx/custom/server_stream[.]conf;
  include /data/nginx/custom/server_stream_tcp[.]conf;
}
{% endif %}
{% if udp_forwarding == 1 or udp_forwarding == true %}
{% # Proxy Protocol is not supported for UDP %}
{% assign listen_extra_args = "" %}
server {
  listen {{ incoming_port }} udp {{ listen_extra_args }};
{% if ipv6 -%}
  listen [::]:{{ incoming_port }} udp {{ listen_extra_args }};
{% else -%}
  #listen [::]:{{ incoming_port }} udp {{ listen_extra_args }};
{% endif %}
  proxy_pass {{ forwarding_host }}:{{ forwarding_port }};

  # Custom
  include /data/nginx/custom/server_stream[.]conf;
  include /data/nginx/custom/server_stream_udp[.]conf;
}
{% endif %}
{% endif %}