Add compatibility for Ipv6 address

Signed-off-by: Matt Cipperly <mcipperly@fb.com>

Author: arcivanov

fluent/sender.py

@@ -121,6 +121,17 @@ def close(self):
 
             self._close()
             self.pendings = None
+            
+    def _host_is_ipv6(self) :
+      try :
+        socket.inet_pton(socket.AF_INET6, self.host)
+        return True
+      except :
+        try :
+          socket.inet_aton(self.host)
+          return False
+        except Exception as e:
+          raise e
 
     def _make_packet(self, label, timestamp, data):
         if label:
@@ -203,7 +214,10 @@ def _reconnect(self):
                     sock.settimeout(self.timeout)
                     sock.connect(self.host[len('unix://'):])
                 else:
-                    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+                    if self._host_is_ipv6() :
+                      sock = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)
+                    else :
+                      sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                     sock.settimeout(self.timeout)
                     # This might be controversial and may need to be removed
                     sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)

setup.py

@@ -12,7 +12,7 @@
 
 setup(
   name='fluent-logger',
-  version='0.9.2',
+  version='0.9.3',
   description=desc,
   long_description=open(README).read(),
   package_dir={'fluent': 'fluent'},