try to get nicer exception messages when we fail fetching the checkip URL

[dyn-nsupdate.git] / client-scripts / dyn-ns-client

diff --git a/client-scripts/dyn-ns-client b/client-scripts/dyn-ns-client
index 88d92204e121fff6571d6dbf111aa4b9d2b09b75..0e96bedb792e34cb79c35164eb240ebb7a94949a 100755 (executable)
--- a/client-scripts/dyn-ns-client
+++ b/client-scripts/dyn-ns-client
@@ -63,7 +63,11 @@ def getMyIP(family, config, methods = {}, verbose = 0):
         return None
     elif method == 'web':
         server = config[family].get('server', config['DEFAULT']['server'])
-        ip = urlopen('https://'+server+'/checkip', config)
+        url = 'https://'+server+'/checkip'
+        try:
+            ip = urlopen(url, config)
+        except urllib.error.URLError:
+            raise Exception("Error fetching {}, make sure the URL is correct and the internet connection actually works.".format(url))
         if verbose >= VERBOSE_FULL:
             print("Server",server,"says my",family,"is",ip)
         return ip
@@ -143,9 +147,15 @@ def updateDomain(server, domain, ipv4, ipv6, password, config, verbose):
         if verbose >= VERBOSE_CHANGE:
             msg = "Successfully updated domain {} on {}:".format(domain, server)
             if ipv4 is not None:
-                msg += " IPv4={} -> {}".format(curIPv4, ipv4)
+                if curIPv4 == ipv4:
+                    msg += " IPv4={} (unchanged)".format(curIPv4)
+                else:
+                    msg += " IPv4={} -> {}".format(curIPv4, ipv4)
             if ipv6 is not None:
-                msg += " IPv6={} -> {}".format(curIPv6, ipv6)
+                if curIPv6 == ipv6:
+                    msg += " IPv6={} (unchanged)".format(curIPv6)
+                else:
+                    msg += " IPv6={} -> {}".format(curIPv6, ipv6)
             print(msg)
         # all went all right
         return True