soft3/deploy/chain/nginx-chain-api.conf.template

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# soft3 root-chain HTTP API behind nginx โ€” one snippet per chain instance.
# Render: sed -e 's/@CHAIN@/pussy/g' -e 's/@BIND@/127.0.0.1:7781/g' nginx-chain-api.conf.template \
#           | sudo tee /etc/nginx/snippets/soft3-chain-pussy.conf
# Include inside the public 443 server block (cyb.ai on cyberproxy, deimos.cybernode.ai on deimos):
#   include /etc/nginx/snippets/soft3-chain-pussy.conf;
# The limit_conn zone must be declared once in the http{} context (nginx.conf or conf.d/soft3-chain.conf):
#   limit_conn_zone $server_name zone=soft3_chain_@CHAIN@:1m;
#
# Why the caps: on 2026-10-15 the 0.10.0 chaosnet node queued 1,800 requests behind one mutex
# because nginx let every abandoned client keep a thread upstream. Here at most 32 requests
# are in flight to the node and an abandoned client is cut off upstream too.

location = /@CHAIN@ {
    return 301 /@CHAIN@/;
}

location /@CHAIN@/ {
    limit_conn soft3_chain_@CHAIN@ 32;
    limit_conn_status 503;

    proxy_pass http://@BIND@/;
    proxy_http_version 1.1;
    proxy_set_header Connection "";
    proxy_set_header Host $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_connect_timeout 2s;
    proxy_read_timeout 20s;
    proxy_send_timeout 20s;
    proxy_ignore_client_abort off;

    client_max_body_size 8m;        # native-node.md: bodies are limited to 8 MiB
}

# the beacon poll (cyb bodies: GET /status every 15 s, 10 s call timeout) and the probe get a short lease
location = /@CHAIN@/health {
    proxy_pass http://@BIND@/health;
    proxy_http_version 1.1;
    proxy_set_header Connection "";
    proxy_connect_timeout 1s;
    proxy_read_timeout 3s;
}

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