Fixes for the ares resolver.

gevent/_socketcommon.py

@@ -222,7 +222,7 @@ def getfqdn(name=''):
     else:
         aliases.insert(0, hostname)
         for name in aliases:
-            if '.' in name:
+            if b'.' in name:
                 break
         else:
             name = hostname

gevent/pywsgi.py

@@ -682,6 +682,8 @@ class WSGIServer(StreamServer):
                     name = socket.getfqdn(address[0])
                 except socket.error:
                     name = str(address[0])
+                if PY3 and not isinstance(name, str):
+                    name = name.decode('ascii')
                 self.environ['SERVER_NAME'] = name
             self.environ.setdefault('SERVER_PORT', str(address[1]))
         else:

gevent/resolver_ares.py

@@ -208,6 +208,8 @@ class Resolver(object):
             if _ip_address == ip_address:
                 raise
             waiter.clear()
+            if isinstance(_ip_address, text_type):
+                _ip_address = _ip_address.encode('ascii')
             self.ares.gethostbyaddr(waiter, _ip_address)
             return waiter.get()