Adding support for UNIX sockets

closes gh-43

Author: bigbes

Makefile

@@ -1,5 +1,5 @@
 test:
-	pytest
+	python -m pytest
 coverage:
 	python -m coverage run -p --source=. setup.py test
 cov-html:

setup.py

@@ -38,11 +38,11 @@
 
 # Test runner
 # python setup.py test
-# try:
-#     from tests.setup_command import test
-#     cmdclass["test"] = test
-# except ImportError:
-#     pass
+try:
+    from tests.setup_command import test
+    cmdclass["test"] = test
+except ImportError:
+    pass
 
 
 def read(*parts):

tarantool/connection.py

@@ -134,6 +134,12 @@ def close(self):
         self._socket = None
 
     def connect_basic(self):
+        if self.host == None:
+            self.connect_unix()
+        else:
+            self.connect_tcp()
+
+    def connect_tcp(self):
         '''
         Create connection to the host and port specified in __init__().
         :raise: `NetworkError`
@@ -150,6 +156,23 @@ def connect_basic(self):
             self.connected = False
             raise NetworkError(e)
 
+    def connect_unix(self):
+        '''
+        Create connection to the host and port specified in __init__().
+        :raise: `NetworkError`
+        '''
+
+        try:
+            # If old socket already exists - close it and re-create
+            self.connected = True
+            if self._socket:
+                self._socket.close()
+            self._socket = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+            self._socket.connect(self.port)
+        except socket.error as e:
+            self.connected = False
+            raise NetworkError(e)
+
     def handshake(self):
         greeting_buf = self._recv(IPROTO_GREETING_SIZE)
         greeting = greeting_decode(greeting_buf)