(issue 105) look for ECONNABORTED which might be raised on FreeBSD wh…

…en accepting() a new connection, crashing the server.

Also modified that part of code so that, if some other unexpected error is raised by accept(), it is printed on stderr and the function just returns without crashing the server.

pyftpdlib/ftpserver.py

@@ -618,10 +618,16 @@ def handle_accept(self):
         except TypeError:
             # sometimes accept() might return None (see issue 91)
             return
+        except socket.error, err:
+            # ECONNABORTED might be thrown on *BSD (see issue 105)
+            if err[0] != ECONNABORTED:
+                logerror(traceback.format_exc())
+            return
         else:
             # sometimes addr == None instead of (ip, port) (see issue 104)
             if addr == None:
                 return
+
         # Check the origin of data connection.  If not expressively
         # configured we drop the incoming data connection if remote
         # IP address does not match the client's IP address.
@@ -3158,12 +3164,17 @@ def handle_accept(self):
         except TypeError:
             # sometimes accept() might return None (see issue 91)
             return
+        except socket.error, err:
+            # ECONNABORTED might be thrown on *BSD (see issue 105)
+            if err[0] != ECONNABORTED:
+                logerror(traceback.format_exc())
+            return
         else:
             # sometimes addr == None instead of (ip, port) (see issue 104)
             if addr == None:
                 return
-        log("[]%s:%s Connected." %addr[:2])
 
+        log("[]%s:%s Connected." %addr[:2])
         handler = self.handler(sock, self)
         if not handler.connected:
             return