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Fix YAML: replace heredoc with inline Python for NAT-PMP portforward-helper

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This commit is contained in:
Will Anderson
2026-04-15 02:24:40 -05:00
parent 6fc0fb2563
commit c88f7022c6
1 changed files with 29 additions and 49 deletions
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servers/legion/k8s/media/fornax-workers.yaml
+29 -49
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@@ -149,47 +149,32 @@ spec:
# Install curl and python3 for NAT-PMP port forwarding # Install curl and python3 for NAT-PMP port forwarding
until apk add -q curl python3 2>/dev/null; do sleep 5; done until apk add -q curl python3 2>/dev/null; do sleep 5; done
# Request port forwarding via ProtonVPN NAT-PMP (gateway 10.2.0.1, UDP 5351) # NAT-PMP: request TCP port mapping from ProtonVPN gateway 10.2.0.1 UDP:5351
# ProtonVPN supports NAT-PMP for port forwarding on p2p-enabled servers # opcode=2 (TCP map), internal=0, external=0 (any), lifetime=7776000s
get_natpmp_port() { NATPMP='import socket,struct
python3 - <<'PYEOF' s=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
import socket, struct, time
gateway = "10.2.0.1"
port = 5351
# NAT-PMP external address request (version=0, opcode=0)
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.settimeout(5) s.settimeout(5)
try: try:
# Request TCP port mapping (version=0, opcode=2, reserved=0, internal_port=0, external_port=0, lifetime=7776000) s.sendto(struct.pack("!BBHHHI",0,2,0,0,0,7776000),("10.2.0.1",5351))
req = struct.pack("!BBHHHI", 0, 2, 0, 0, 0, 7776000) d,_=s.recvfrom(256)
s.sendto(req, (gateway, port)) r=struct.unpack("!BBHIHHH",d[:16]) if len(d)>=16 else None
data, _ = s.recvfrom(256) print(r[5] if r and r[2]==0 else 0)
if len(data) >= 16: except:
version, opcode, result, epoch, int_port, ext_port, lifetime = struct.unpack("!BBHIHHH", data[:16]) print(0)
if result == 0:
print(ext_port)
else:
print(0)
else:
print(0)
except Exception as e:
print(0)
finally: finally:
s.close() s.close()'
PYEOF
} get_natpmp_port() { python3 -c "$NATPMP"; }
echo "Requesting port via NAT-PMP..." echo "Requesting port via NAT-PMP..."
PORT=$(get_natpmp_port) PORT=$(get_natpmp_port)
if [ -n "$PORT" ] && [ "$PORT" != "0" ]; then if [ -n "$PORT" ] && [ "$PORT" != "0" ]; then
echo "$(date): NAT-PMP assigned port: $PORT" echo "$(date): NAT-PMP port: $PORT"
echo "$PORT" > /tmp/gluetun/forwarded_port echo "$PORT" > /tmp/gluetun/forwarded_port
else else
echo "$(date): NAT-PMP failed, will retry..." echo "$(date): NAT-PMP failed, will retry..."
fi fi
# Loop: refresh port every 4 minutes (lifetime 7776000s, renewal every 4min for safety)
# Also sync to qBittorrent whenever port is known
LAST_PORT="" LAST_PORT=""
while true; do while true; do
PORT=$(get_natpmp_port) PORT=$(get_natpmp_port)
@@ -418,32 +403,27 @@ spec:
until apk add -q curl python3 2>/dev/null; do sleep 5; done until apk add -q curl python3 2>/dev/null; do sleep 5; done
get_natpmp_port() { NATPMP='import socket,struct
python3 - <<'PYEOF' s=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
import socket, struct
gateway = "10.2.0.1"
port = 5351
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.settimeout(5) s.settimeout(5)
try: try:
req = struct.pack("!BBHHHI", 0, 2, 0, 0, 0, 7776000) s.sendto(struct.pack("!BBHHHI",0,2,0,0,0,7776000),("10.2.0.1",5351))
s.sendto(req, (gateway, port)) d,_=s.recvfrom(256)
data, _ = s.recvfrom(256) r=struct.unpack("!BBHIHHH",d[:16]) if len(d)>=16 else None
if len(data) >= 16: print(r[5] if r and r[2]==0 else 0)
version, opcode, result, epoch, int_port, ext_port, lifetime = struct.unpack("!BBHIHHH", data[:16]) except:
print(ext_port if result == 0 else 0) print(0)
else:
print(0)
except Exception:
print(0)
finally: finally:
s.close() s.close()'
PYEOF
} get_natpmp_port() { python3 -c "$NATPMP"; }
echo "Requesting port via NAT-PMP..." echo "Requesting port via NAT-PMP..."
PORT=$(get_natpmp_port) PORT=$(get_natpmp_port)
[ -n "$PORT" ] && [ "$PORT" != "0" ] && echo "$(date): NAT-PMP port: $PORT" && echo "$PORT" > /tmp/gluetun/forwarded_port if [ -n "$PORT" ] && [ "$PORT" != "0" ]; then
echo "$(date): NAT-PMP port: $PORT"
echo "$PORT" > /tmp/gluetun/forwarded_port
fi
LAST_PORT="" LAST_PORT=""
while true; do while true; do