Handle timeouts & max requests in Python test class

tests/iptogeo.py

@@ -45,16 +45,20 @@ class IPToGeo(object):
               4 : 'Bad IP version',
               5 : 'Unsupported IP version',
               6 : 'IP not found'}
-    
+
+    MAX_REQUESTS = 50
+
     def __init__(self, remote_addr='127.0.0.1', remote_port=53333, timeout=None, family=socket.AF_INET):
         self._remote_addr = remote_addr
         self._remote_port = remote_port
         self._timeout = timeout
         self._family = family
-
-        self._create_socket()
+        self._nb_requests_sent = self.MAX_REQUESTS # Force socket creation
+        self._socket = None
 
     def _create_socket(self):
+        if self._socket:
+            self._socket.close()
         self._socket = socket.socket(self._family, socket.SOCK_STREAM)
         if not self._timeout is None:
             self._socket.settimeout(self._timeout)
@@ -108,7 +112,25 @@ class IPToGeo(object):
         (cc0, cc1, cc2, cc3) = struct.unpack_from('BBBB', packet, 7*4)
 
         return (ip_res, '%c%c%c%c' % (cc0, cc1, cc2, cc3))
-        
+
+    def _send_request(self, packet, second_chance=True):
+        self._nb_requests_sent += 1
+        if self._nb_requests_sent >= self.MAX_REQUESTS:
+            self._create_socket()
+            self._nb_requests_sent = 0
+        try:
+            self._socket.send(packet)
+            packet = self._socket.recv(IPToGeo.PACKET_SIZE)
+            if not packet:
+                raise socket.timeout
+            return packet
+        except socket.timeout, e:
+            if second_chance:
+                self._nb_requests_sent = self.MAX_REQUESTS
+                return self._send_request(packet, False)
+            else:
+                raise e
+            
     def ip_to_geo(self, ip):
         ip_type = IPToGeo.IPV4
         if ip.find('.') >= 0:
@@ -124,15 +146,7 @@ class IPToGeo(object):
             raise Exception('Bad IP %s' % (ip))
 
         packet = self._create_request(splitted_ip, ip_type)
-        try:
-            self._socket.send(packet)
-        except IOError, e:
-            # Give another chance (we may have been disconnected due to timeout)
-            self._create_socket()
-            self._socket.send(packet)
-        packet = self._socket.recv(IPToGeo.PACKET_SIZE)
-        if not packet:
-            raise IPToGeoException('Error, empty packet')
+        packet = self._send_request(packet)
         (ip, country_code) = self._check_request(packet)
         if country_code:
             # convert to string