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#!/usr/bin/env bash
set -euo pipefail
SSH_USER="blendersb.turn"
SSH_HOST="blendersb-45318.portmap.host"
SSH_REMOTE_PORT=45318
LOCAL_TARGET_PORT=7860
SSH_LOG="/home/appuser/ssh-tunnel.log"
SSH_DIR="/home/appuser/.ssh"
mkdir -p "$SSH_DIR"
chmod 700 "$SSH_DIR"
chown appuser:appuser "$SSH_DIR" 2>/dev/null || true
KEY_PATH="$SSH_DIR/private.pem"
if [ -n "${PORTMAP_SECRET:-}" ]; then
printf '%b' "$PORTMAP_SECRET" > "$KEY_PATH"
chmod 600 "$KEY_PATH"
chown appuser:appuser "$KEY_PATH" 2>/dev/null || true
echo "Wrote private key to $KEY_PATH (from env var)."
else
echo "No PORTMAP_SECRET provided; skipping PEM creation."
fi
SSH_PID=0
start_ssh_tunnel() {
if [ -f "$KEY_PATH" ]; then
echo "Starting SSH reverse tunnel to ${SSH_HOST}:${SSH_REMOTE_PORT} -> localhost:${LOCAL_TARGET_PORT}"
nohup ssh -i "$KEY_PATH" \
-o StrictHostKeyChecking=no \
-o UserKnownHostsFile=/dev/null \
-o ServerAliveInterval=30 \
-o ServerAliveCountMax=3 \
"${SSH_USER}@${SSH_HOST}" \
-N -R "${SSH_REMOTE_PORT}:127.0.0.1:${LOCAL_TARGET_PORT}" >"$SSH_LOG" 2>&1 &
SSH_PID=$!
echo "SSH tunnel started (pid=${SSH_PID}); logging to $SSH_LOG"
else
echo "No private key found; skipping SSH tunnel."
fi
}
stop_ssh_tunnel() {
if [ "$SSH_PID" -ne 0 ] && kill -0 "$SSH_PID" >/dev/null 2>&1; then
echo "Stopping SSH tunnel (pid=${SSH_PID})..."
kill "$SSH_PID" || true
sleep 1
kill -9 "$SSH_PID" 2>/dev/null || true
fi
}
trap 'echo "Received SIGTERM/SIGINT, shutting down..."; stop_ssh_tunnel; exit 0' TERM INT
start_ssh_tunnel
exec turnserver \
# -c /etc/coturn/turnserver.conf \
# --listening-ip=0.0.0.0 \
--listening-port=7860 \
--tls-listening-port=5349 \
--external-ip="tcp://blendersb-45318.portmap.host:45318" \
# --cert=/etc/turn/certs/turn_server_cert.pem \
# --pkey=/etc/turn/certs/turn_server_pkey.pem \
--user=myuser:mypassword \
# --realm="$TURN_PUBLIC_ADDR" \
--log-file=stdout \
--simple-log \
--no-cli &
TURN_PID=$!
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