Try to discover public IP

setup.py

@@ -14,6 +14,7 @@ setup(
         "peewee>2.10.1",
         "click>=7.0",
         "dnspython",
+        "miniupnpc",
     ],
     entry_points={
         "console_scripts": ["urlchecker=urlchecker_cli:runUrlChecker "]

urlchecker_http.py

@@ -6,6 +6,7 @@ import traceback
 import time
 from forcediphttpsadapter.adapters import ForcedIPHTTPSAdapter
 import dns.resolver
+import miniupnpc
 
 
 __version__ = "0.0.3"
@@ -109,6 +110,12 @@ class WebBot:
         myresolver = dns.resolver.Resolver()
         print("Resolvers", myresolver.nameservers)
 
+        u = miniupnpc.UPnP()
+        u.discoverdelay = 200
+        u.discover()
+        u.selectigd()
+        print("external ip address: {}".format(u.externalipaddress()))
+
         try:
             self.check(url)
         except KeyboardInterrupt: