No IGD UPnP Device found on the network

[szakaria]

Hello,
I have installed openvpn service in my openwrt device (192.168.1.4) and manually configured port forwarding for port 1194 in my ISP's router (192.168.1.1). Everything is working fine.
Now I would like to go one step further and use upnp to do port forwarding configuration in the ISP router instead of doing it manually. I deleted the port forwarding entry (for port 1194) in the ISP router and installed, on my openwrt device, miniupnpd and luci-app-upnp. If my understanding is correct, miniupnpd will make my openwrt device an IGD (??). I also installed miniupnpc to make the device a upnp client.
I am using the default configuration for miniupnpd and added option log_output '1' to get logs.

I tried the following on openwrt device:

root@openwrt:/etc/# upnpc -a 192.168.1.4 1194 1194 udp

 (c) 2005-2016 Thomas Bernard.
Go to http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
for more information.
No IGD UPnP Device found on the network !

I was expecting that it will find IGD as 192.168.1.4 (itself)

When I check in the GUI of the ISP router I can see that an entry was created:
UPnP Control Point Table
IP Address MAC Address
192.168.1.4 xx:xx:xx:xx:xx:xx (I obfuscated the MAC address)

this entry disappered few minutes later.

Eventhough I have syslog-ng package installed, I checked the system logs but found nothing regarding upnp returned errors. I am blocked at this stage.
Any help is very much appreciated.

Thank you.

[szakaria]

I have solved this issue as follows:

• I have uninstalled miniupnpd, luci-app-upnp and miniupnpc. I will not use them.
• I used the following python scripts:

1. • scripts#1: that will send m-search command to my ISP router (192.168.1.1)

import socket
msg = \
  'M-SEARCH * HTTP/1.1\r\n' \
  'HOST:192.168.16.1:1900\r\n' \
  'ST:upnp:rootdevice\r\n' \
  'MX:2\r\n' \
  'MAN:"ssdp:discover"\r\n' \
  '\r\n'
# Set up UDP socket
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
s.settimeout(2)
s.sendto(msg, ('192.168.1.1', 1900) )
try:
  while True:
      data, addr = s.recvfrom(65507)
      print addr, data
except socket.timeout:
  pass

The output for this script contains this line :
Location: http://192.168.1.1:2869/DeviceDescription.xml
By running this location in a browser, you will get a list of xml entries. The relevant entry for us is the controlURL. For my router, the controlURL returned was /UD/?8.

2. Script#2: This script will use the previously returned parameters from script#1 and do the port forwarding work for us. Of course, upnp must be enabled in the ISP router.

#!/usr/bin/env python
#-*- coding:utf-8 -*-

import urllib2

HOST = '192.168.1.1'
PORT = 2869
CONTROL = '/UD/?8'
URL = 'http://' + HOST + ':' + str(PORT) + CONTROL

NEW_EXTERNAL_PORT = 1194     #ovpn port
NEW_INTERNAL_PORT = 1194   
NEW_INTERNAL_CLIENT = '192.168.1.3'   # ip address of my openwrt device
NEW_PROTOCOL = 'UDP'
LEASE_DURATION = '0'    
DESCRIPTION = 'test'

SOAP  = '<?xml version="1.0"?>\r\n'
SOAP += '<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">\r\n'
SOAP += '<s:Body>\r\n'
SOAP += '<m:AddPortMapping xmlns:m="urn:schemas-upnp-org:service:WANPPPConnection:1">\r\n'
SOAP += '<NewRemoteHost></NewRemoteHost>\r\n'
SOAP += '<NewExternalPort>' + str(NEW_EXTERNAL_PORT) + '</NewExternalPort>\r\n'
SOAP += '<NewProtocol>' + NEW_PROTOCOL + '</NewProtocol>\r\n'

SOAP += '<NewInternalPort>' + str(NEW_INTERNAL_PORT) + '</NewInternalPort>\r\n'
SOAP += '<NewInternalClient>' + NEW_INTERNAL_CLIENT + '</NewInternalClient>\r\n'
SOAP += '<NewEnabled>1</NewEnabled>\r\n'
SOAP += '<NewPortMappingDescription>' + DESCRIPTION + '</NewPortMappingDescription>\r\n'
SOAP += '<NewLeaseDuration>' + LEASE_DURATION + '</NewLeaseDuration>\r\n'

SOAP += '</m:AddPortMapping>\r\n'
SOAP += '</s:Body>\r\n'
SOAP += '</s:Envelope>\r\n'

req = urllib2.Request(URL)
req.add_header('Content-Type', 'text/xml; charset="utf-8"')
req.add_header('SOAPACTION', '"urn:schemas-upnp-org:service:WANPPPConnection:1#AddPortMapping"')
req.add_data(SOAP)

try:
    res = urllib2.urlopen(req)
    print res.read()
except urllib2.HTTPError, e:
    print e.code
    print e.msg

This is what was shown in my router's new upnp table entry:

|状態   |サービスホスト   |プロトコル   |内部ポート番号   |リモートホスト   |外部ポート番号   |有効期限   |サービスの説明  |
|---|---|---|---|---|---|---|---|
|有効   |192.168.1.3 |UDP   |1194   |----   |1194   |無期限   |test  |

I believe that I can use miniupnpc to achieve the same thing but when I ran upnpc command from the openwrt machine and checked in tcpdump for destination port 1900, I could not see anything. Maybe a firewall issue?? I tried iptables -A INPUT --dport 1900 -j ACCEPT but still upnpc didn't work. Maybe someone can comment on this.