ttyd-demo/default.nix
λpkgs, ports, filc-emacs
let
Generate lighttpd config
pkgs.writeText"lighttpd.conf"
server.modules = (
"mod_access",
"mod_alias",
"mod_accesslog",
"mod_wstunnel",
"mod_redirect",
)
server.document-root = "${./.}"
server.port = env.PUBLIC_PORT
server.bind = env.PUBLIC_HOST
# Logging
server.errorlog = env.ERROR_LOG
accesslog.filename = env.ACCESS_LOG
# Index file
index-file.names = ( "index.html" )
# MIME types
mimetype.assign = (
".html" => "text/html",
".css" => "text/css",
".js" => "text/javascript",
".woff2" => "font/woff2",
".woff" => "font/woff",
)
# WebSocket proxy to ttyd backend via Unix socket
$HTTP["url"] =~ "^/ws$" {
wstunnel.server = ( "" => ( ( "socket" => env.TTYD_SOCKET ) ) )
wstunnel.frame-type = "binary"
}
in
pkgs.writeShellScriptBin"ttyd-emacs-demo"
set -euo pipefail
# Default values
PUBLIC_PORT=''${TTYD_PUBLIC_PORT:-8080}
PUBLIC_HOST=''${TTYD_PUBLIC_HOST:-0.0.0.0}
RUNTIME_DIR=$(${pkgs.coreutils}/bin/mktemp -d)
# Parse arguments
while [[ $# -gt 0 ]]; do
case $1 in
--port)
PUBLIC_PORT="$2"
shift 2
;;
--host)
PUBLIC_HOST="$2"
shift 2
;;
--help)
echo "Usage: ttyd-emacs-demo [--port PORT] [--host HOST]"
echo ""
echo "Options:"
echo " --port PORT Public port to bind to (default: 8080)"
echo " --host HOST Public host to bind to (default: 0.0.0.0)"
echo ""
echo "Environment variables:"
echo " TTYD_PUBLIC_PORT Same as --port"
echo " TTYD_PUBLIC_HOST Same as --host"
exit 0
;;
*)
echo "Unknown option: $1"
echo "Use --help for usage information"
exit 1
;;
esac
done
# Get actual hostname/IP for display
HOSTNAME=$(${pkgs.hostname}/bin/hostname)
if [[ "$PUBLIC_HOST" == "0.0.0.0" ]]; then
DISPLAY_HOST="$HOSTNAME"
else
DISPLAY_HOST="$PUBLIC_HOST"
fi
# Cleanup function
cleanup() {
echo ""
echo "Shutting down..."
[ -n "''${TTYD_PID:-}" ] && kill $TTYD_PID 2>/dev/null || true
[ -n "''${LIGHTTPD_PID:-}" ] && kill $LIGHTTPD_PID 2>/dev/null || true
[ -d "$RUNTIME_DIR" ] && rm -rf "$RUNTIME_DIR"
}
trap cleanup EXIT INT TERM
# Set up Unix socket path
export TTYD_SOCKET="$RUNTIME_DIR/ttyd.sock"
# Start ttyd on Unix socket (lighttpd will proxy to it)
echo "Starting ttyd on Unix socket $TTYD_SOCKET..."
${ports.ttyd}/bin/ttyd \
--interface "$TTYD_SOCKET" -b / --debug 7 \
--writable --index ${./index.html} \
${filc-emacs}/bin/emacs -nw &
TTYD_PID=$!
# Wait for ttyd socket to be created
for i in {1..30}; do
if [ -S "$TTYD_SOCKET" ]; then
break
fi
sleep 0.1
done
echo "Starting lighttpd on $PUBLIC_HOST:$PUBLIC_PORT..."
export PUBLIC_PORT PUBLIC_HOST
export ERROR_LOG="$RUNTIME_DIR/error.log"
export ACCESS_LOG="$RUNTIME_DIR/access.log"
${ports.lighttpd}/bin/lighttpd -D -f ${lighttpdConf} &
LIGHTTPD_PID=$!
# Wait for lighttpd to start
for i in {1..30}; do
if ${pkgs.netcat}/bin/nc -z "$PUBLIC_HOST" "$PUBLIC_PORT" 2>/dev/null; then
break
fi
sleep 0.1
done
echo " http://$DISPLAY_HOST:$PUBLIC_PORT/"
wait $TTYD_PID $LIGHTTPD_PID