初始化：导入 VDI 云终端代码与会话基础能力
变更详情：init: VDI 云终端代码（kiosk-shell 登录/桌面列表/Moonlight/RDP/看门狗）
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#!/bin/sh
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# VDI 云桌面串流启动器（Moonlight 客户端侧）
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#
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# 职责：
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# 1. 读取本地配置（主机、应用、分辨率、帧率、码率、编解码）
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# 2. 以软件解码拉起 moonlight-qt，全屏串流云桌面
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# 3. 写心跳文件，供 vdi-kiosk-monitor 判断是否假死
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# 4. 检测串流假死（CPU 与网络均无流量）并杀掉重连
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#
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# 被 vdi-kiosk-monitor 守护：
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# vdi-kiosk-monitor -- /home/armbian/vdi-terminal/bin/vdi-moonlight
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#
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# 说明：RK3528 当前没有可用的 V4L2 request/m2m 硬解设备，moonlight-qt 的
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# --video-decoder auto 会选到 h264_v4l2m2m 并报 "Could not find a valid device"，
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# 因此配置里显式指定 decoder=software。接入 MPP/VPU 硬解后再改回 auto。
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set -u
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CONF="${VDI_MOONLIGHT_CONF:-$HOME/.config/vdi-terminal/moonlight.conf}"
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HEARTBEAT="${VDI_MOONLIGHT_HEARTBEAT:-/tmp/vdi-moonlight.heartbeat}"
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PIDFILE="${VDI_MOONLIGHT_PIDFILE:-/tmp/vdi-moonlight.pid}"
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LAUNCHER_PIDFILE="${VDI_MOONLIGHT_LAUNCHER_PIDFILE:-/tmp/vdi-moonlight-launcher.pid}"
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LOG_DIR="${VDI_MOONLIGHT_LOG_DIR:-$HOME/vdi-terminal/logs}"
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LOG_FILE="$LOG_DIR/moonlight-$(date +%Y%m%d).log"
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ML_PID=""
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# 默认值，均可被配置文件覆盖
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HOST=""
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PORT=""
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APP="Desktop"
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WIDTH=1920
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HEIGHT=1080
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FPS=60
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BITRATE=20000
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CODEC="H.264"
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DECODER="software"
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DISPLAY_MODE="fullscreen"
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AUDIO=1
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ABSOLUTE_MOUSE=1
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VSYNC=0
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FRAME_PACING=0
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PERFORMANCE_OVERLAY=0
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RETRY=3
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RETRY_DELAY=5
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HANG_TIMEOUT=90
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WAIT_HOST=120
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mkdir -p "$LOG_DIR"
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log() {
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printf '%s %s\n' "$(date '+%Y-%m-%d %H:%M:%S')" "$*" >> "$LOG_FILE"
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}
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# 读取 key=value 形式的配置
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load_config() {
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[ -f "$CONF" ] || return 0
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while IFS='=' read -r key value; do
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case "$key" in
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''|\#*) continue ;;
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esac
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value="${value%\"}"; value="${value#\"}"
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case "$key" in
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host) HOST="$value" ;;
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port) PORT="$value" ;;
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app) APP="$value" ;;
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width) WIDTH="$value" ;;
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height) HEIGHT="$value" ;;
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fps) FPS="$value" ;;
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bitrate) BITRATE="$value" ;;
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codec) CODEC="$value" ;;
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decoder) DECODER="$value" ;;
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display-mode) DISPLAY_MODE="$value" ;;
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audio) AUDIO="$value" ;;
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absolute-mouse) ABSOLUTE_MOUSE="$value" ;;
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vsync) VSYNC="$value" ;;
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frame-pacing) FRAME_PACING="$value" ;;
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performance-overlay) PERFORMANCE_OVERLAY="$value" ;;
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retry) RETRY="$value" ;;
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retry-delay) RETRY_DELAY="$value" ;;
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hang-timeout) HANG_TIMEOUT="$value" ;;
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wait-host) WAIT_HOST="$value" ;;
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esac
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done < "$CONF"
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}
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# 默认路由出接口的累计收字节数，用于判断串流是否还有数据流入
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rx_bytes() {
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iface=$(awk '$2=="00000000" {print $1; exit}' /proc/net/route)
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[ -n "$iface" ] || iface=lo
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awk -v i="$iface:" '$1==i {print $2; exit}' /proc/net/dev
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}
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# 进程累计 CPU 时间（utime+stime），用于判断串流是否还在解码
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cpu_ticks() {
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pid="$1"
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[ -r "/proc/$pid/stat" ] || { echo 0; return; }
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cut -d')' -f2 "/proc/$pid/stat" 2>/dev/null | awk '{print $12+$13}'
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}
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host_reachable() {
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# 用 TCP 探测 Sunshine 的 HTTPS 控制端口。
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# 注意：Windows 防火墙默认屏蔽 ICMP，ping 不通不代表服务不可用，
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# 所以优先做 TCP 连接探测，ping 只作为最后兜底。
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probe_port="${PORT:-47984}"
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if command -v nc >/dev/null 2>&1; then
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nc -z -w 2 "$HOST" "$probe_port" 2>/dev/null && return 0
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return 1
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fi
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if command -v bash >/dev/null 2>&1; then
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timeout 3 bash -c "exec 3<>/dev/tcp/$HOST/$probe_port" 2>/dev/null && return 0
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return 1
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fi
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ping -c 1 -W 2 "$HOST" >/dev/null 2>&1
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}
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kill_stale() {
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# 清理上次崩溃残留的串流进程，避免孤儿进程抢占显示。
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# 顺序很重要：先结束残留的启动器实例（否则它会再拉起一条串流），
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# 再清理残留的串流进程。
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if [ -f "$LAUNCHER_PIDFILE" ]; then
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old=$(cat "$LAUNCHER_PIDFILE" 2>/dev/null)
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if [ -n "$old" ] && [ "$old" != "$$" ]; then
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kill -9 "$old" 2>/dev/null
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fi
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rm -f "$LAUNCHER_PIDFILE"
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fi
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if [ -f "$PIDFILE" ]; then
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old=$(cat "$PIDFILE" 2>/dev/null)
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[ -n "$old" ] && kill -9 "$old" 2>/dev/null
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rm -f "$PIDFILE"
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fi
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# 用 ^ 锚定命令行开头，避免误杀包含该字符串的 shell 包装进程
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pkill -f '^moonlight-qt stream' 2>/dev/null
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sleep 1
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}
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disable_screensaver() {
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# Kiosk 场景不允许息屏把画面遮掉
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command -v gsettings >/dev/null 2>&1 || return 0
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gsettings set org.mate.screensaver idle-activation-enabled false 2>/dev/null
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gsettings set org.mate.screensaver lock-enabled false 2>/dev/null
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}
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build_cmd() {
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# moonlight-qt stream 只接受 <host> <app> 位置参数，没有 --port 选项，
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# 服务端端口由 moonlight 自身按 GameStream 协议协商。
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CMD="moonlight-qt stream $HOST $APP"
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CMD="$CMD --resolution ${WIDTH}x${HEIGHT}"
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CMD="$CMD --fps $FPS"
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CMD="$CMD --bitrate $BITRATE"
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CMD="$CMD --display-mode $DISPLAY_MODE"
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CMD="$CMD --video-codec $CODEC"
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CMD="$CMD --video-decoder $DECODER"
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CMD="$CMD --keep-awake"
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[ "$ABSOLUTE_MOUSE" = "1" ] && CMD="$CMD --absolute-mouse"
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[ "$AUDIO" = "1" ] && CMD="$CMD --audio-on-host" || CMD="$CMD --no-audio-on-host"
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# 低延迟开关：默认关闭 vsync 与 frame-pacing，削减帧队列/呈现延迟
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[ "$VSYNC" = "1" ] && CMD="$CMD --vsync" || CMD="$CMD --no-vsync"
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[ "$FRAME_PACING" = "1" ] && CMD="$CMD --frame-pacing" || CMD="$CMD --no-frame-pacing"
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[ "$PERFORMANCE_OVERLAY" = "1" ] && CMD="$CMD --performance-overlay"
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}
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run_stream() {
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build_cmd
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log "启动串流: $CMD"
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# shellcheck disable=SC2086
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$CMD >> "$LOG_FILE" 2>&1 &
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ML_PID=$!
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echo "$ML_PID" > "$PIDFILE"
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# 收到终止信号时把串流进程一起带走，避免留下占用显示的孤儿进程
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trap 'if [ -n "$ML_PID" ] && kill -0 "$ML_PID" 2>/dev/null; then kill -TERM "$ML_PID" 2>/dev/null; sleep 1; kill -9 "$ML_PID" 2>/dev/null; fi; rm -f "$PIDFILE"; exit 143' TERM INT
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last_cpu=$(cpu_ticks "$ML_PID")
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last_rx=$(rx_bytes)
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flat_since=$(date +%s)
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while kill -0 "$ML_PID" 2>/dev/null; do
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sleep 5
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date +%s > "$HEARTBEAT" 2>/dev/null
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cur_cpu=$(cpu_ticks "$ML_PID")
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cur_rx=$(rx_bytes)
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now=$(date +%s)
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if [ "$cur_cpu" != "$last_cpu" ] || [ "$cur_rx" != "$last_rx" ]; then
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flat_since=$now
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elif [ "$HANG_TIMEOUT" -gt 0 ] && [ $((now - flat_since)) -ge "$HANG_TIMEOUT" ]; then
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log "检测到串流假死（${HANG_TIMEOUT}s 内无 CPU 与网络活动），重启串流"
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kill -9 "$ML_PID" 2>/dev/null
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wait "$ML_PID" 2>/dev/null
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return 3
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fi
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last_cpu=$cur_cpu
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last_rx=$cur_rx
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done
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wait "$ML_PID"
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code=$?
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rm -f "$PIDFILE"
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log "串流进程退出, code=$code"
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return $code
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}
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case "${1:-start}" in
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status)
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if pgrep -f 'moonlight-qt stream' >/dev/null 2>&1; then
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echo "moonlight: running"
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exit 0
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fi
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echo "moonlight: stopped"
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exit 1
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;;
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stop)
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kill_stale
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echo "moonlight: stopped"
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exit 0
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;;
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esac
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load_config
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if [ -z "$HOST" ]; then
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log "配置缺失或缺少 host: $CONF"
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exit 2
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fi
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export DISPLAY="${VDI_DISPLAY:-:0}"
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export XAUTHORITY="${VDI_XAUTHORITY:-$HOME/.Xauthority}"
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disable_screensaver
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kill_stale
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echo "$$" > "$LAUNCHER_PIDFILE"
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# 等待云桌面主机就绪（开机自启时虚拟机可能还没起来）
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waited=0
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log "等待云桌面主机 $HOST 就绪（最长 ${WAIT_HOST}s）"
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while [ "$waited" -lt "$WAIT_HOST" ]; do
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if host_reachable; then
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log "主机 $HOST 已就绪（等待 ${waited}s）"
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break
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fi
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sleep 5
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waited=$((waited + 5))
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done
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if [ "$waited" -ge "$WAIT_HOST" ]; then
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log "等待主机 $HOST 超时 ${WAIT_HOST}s，仍尝试启动串流"
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fi
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attempt=1
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while [ "$attempt" -le "$RETRY" ]; do
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run_stream
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code=$?
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if [ "$code" = "0" ]; then
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log "串流正常结束"
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exit 0
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fi
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if [ "$code" = "3" ]; then
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# 假死重启，直接下一轮
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attempt=$((attempt + 1))
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continue
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fi
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log "第 $attempt/$RETRY 次串流失败 (code=$code)，${RETRY_DELAY}s 后重试"
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attempt=$((attempt + 1))
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sleep "$RETRY_DELAY"
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done
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log "连续 $RETRY 次串流失败，退出，交由 Monitor 重启"
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exit 1
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