fegger
6e68300d05
Ship systemd/screencast-receiver.service, a template the install script substitutes (binary path, run user) and enables so the receiver starts at boot after the network and avahi-daemon, with restart-on-failure and a raised start limit for slow-booting boards. SIGTERM gives the graceful shutdown that withdraws the mDNS announcement — systemctl stop never triggers the stale-record trap that kill -9 does. Headless consoles render via KMSDRM (the script adds the run user to video/render/input); desktop autologin sessions uncomment two documented Environment lines. The install script gains SC_RECEIVER_SERVICE=0 to opt out. Validated: systemd-analyze verify on the substituted unit (only the expected missing /usr/local/bin path on this dev machine), and a live lifecycle test as a user unit: the service-managed receiver announced itself (--discover found it), systemctl stop produced a clean exit (Result=success, no restart) and the mDNS announcement was withdrawn immediately.
46 lines
1.6 KiB
Desktop File
46 lines
1.6 KiB
Desktop File
# screencast-receiver.service — autostart for the receiver.
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#
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# This file is a template: scripts/install-receiver.sh substitutes
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# __SC_RECEIVER_BIN__ and __SC_RECEIVER_USER__ before installing it to
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# /etc/systemd/system/screencast-receiver.service.
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#
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# Display environments:
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#
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# 1. Headless console (SDL renders via KMSDRM): works as installed. The
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# configured User needs access to /dev/dri and the input devices; the
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# install script adds it to the video/render/input groups.
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#
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# 2. Graphical session (Wayland or X11 desktop with autologin): uncomment
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# the Environment lines in [Service] and adjust them to the session
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# owner (XDG_RUNTIME_DIR usually lives in /run/user/1000).
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[Unit]
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Description=Screencast receiver (H.264 over RTP/UDP)
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Wants=network-online.target
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After=network-online.target avahi-daemon.service
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# Give slow-booting boards (and desktop sessions that start late) a chance;
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# systemd's default limit would give up after 5 fast failures.
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StartLimitIntervalSec=30
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StartLimitBurst=10
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[Service]
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Type=simple
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User=__SC_RECEIVER_USER__
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ExecStart=__SC_RECEIVER_BIN__ --receive
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# SIGTERM (systemctl stop) shuts the receiver down gracefully, which
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# withdraws its mDNS announcement. Never SIGKILL it; the systemd default
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# KillMode escalates only after the graceful timeout.
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KillSignal=SIGTERM
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TimeoutStopSec=10
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Restart=on-failure
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RestartSec=3
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NoNewPrivileges=true
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PrivateTmp=true
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# Graphical session: uncomment and adjust to the session owner.
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#Environment=XDG_RUNTIME_DIR=/run/user/1000
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#Environment=WAYLAND_DISPLAY=wayland-0
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#Environment=DISPLAY=:0
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[Install]
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WantedBy=multi-user.target |