52 lines
1.8 KiB
Plaintext
52 lines
1.8 KiB
Plaintext
# nginx reverse proxy for the LPRA server.
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# TLS is terminated here; the Go server listens on 127.0.0.1:8091.
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#
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# Put this in /etc/nginx/sites-available/lp_agent and symlink it into
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# sites-enabled, then: sudo nginx -t && sudo systemctl reload nginx
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#
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# Agents connect by WebSocket (from 0.1.0), with HTTP long polling to fall
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# back on; the browser uses plain HTTP. The settings that matter:
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# - Upgrade / Connection headers -> let the agents' WebSocket through
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# - proxy_buffering off -> deliver long-poll responses immediately
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# - proxy_read_timeout 300s -> longer than the 25s long-poll hold
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#
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# NOTE: proxy_pass MUST start with "http://". A bare "proxy_pass 127.0.0.1:8091;"
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# causes nginx error: [emerg] invalid URL prefix.
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# "Connection: upgrade" for a WebSocket, "close" for everything else.
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map $http_upgrade $connection_upgrade {
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default upgrade;
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'' close;
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}
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server {
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listen 80;
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server_name example.ru;
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client_max_body_size 120m;
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location / {
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proxy_pass http://127.0.0.1:8091;
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proxy_http_version 1.1;
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proxy_set_header Host $host;
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_set_header X-Forwarded-Proto $scheme;
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# Agents' WebSocket.
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection $connection_upgrade;
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# Long-poll behaviour: no buffering, generous read timeout.
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proxy_buffering off;
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proxy_cache off;
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# Pass uploads on as they arrive: the speed test through the browser
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# times them on the client.
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proxy_request_buffering off;
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proxy_read_timeout 300s;
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proxy_send_timeout 300s;
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}
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}
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