http://bugs.python.org/issue6192

Move the newly introduced disable_nagle_algorithm flag into the StreamRequestHandler, where it is more appropriate.

Doc/library/socketserver.rst

@@ -223,16 +223,6 @@ The server classes support the following class variables:
    desired.  If :meth:`handle_request` receives no incoming requests within the
    timeout period, the :meth:`handle_timeout` method is called.
 
-.. attribute:: TCPServer.disable_nagle_algorithm
-
-   If set to True, it will set the TCP_NODELAY attribute of new requests
-   connections.  This can help alleviate problems with latency in
-   request-response type applications.  To avoid sending many small packets,
-   this option should be used only when bufferning output, such as when
-   setting :attr:`StreamRequestHandler.wbufsize` attribute to -1.
-
-   .. versionadded:: 2.7
-
 There are various server methods that can be overridden by subclasses of base
 server classes like :class:`TCPServer`; these methods aren't useful to external
 users of the server object.

Lib/SocketServer.py

@@ -374,7 +374,6 @@ class TCPServer(BaseServer):
     - socket_type
     - request_queue_size (only for stream sockets)
     - allow_reuse_address
-    - disable_nagle_algorithm
 
     Instance variables:
 
@@ -392,8 +391,6 @@ class TCPServer(BaseServer):
 
     allow_reuse_address = False
 
-    disable_nagle_algorithm = False
-
     def __init__(self, server_address, RequestHandlerClass, bind_and_activate=True):
         """Constructor.  May be extended, do not override."""
         BaseServer.__init__(self, server_address, RequestHandlerClass)
@@ -444,10 +441,7 @@ class TCPServer(BaseServer):
         May be overridden.
 
         """
-        request = self.socket.accept()
-        if self.disable_nagle_algorithm:
-            request[0].setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, True)
-        return request
+        return self.socket.accept()
 
     def close_request(self, request):
         """Called to clean up an individual request."""
@@ -655,8 +649,15 @@ class StreamRequestHandler(BaseRequestHandler):
     rbufsize = -1
     wbufsize = 0
 
+    # Disable nagle algoritm for this socket, if True.
+    # Use only when wbufsize != 0, to avoid small packets.
+    disable_nagle_algorithm = False
+
     def setup(self):
         self.connection = self.request
+        if self.disable_nagle_algorithm:
+            self.connection.setsockopt(socket.IPPROTO_TCP,
+                                       socket.TCP_NODELAY, True)
         self.rfile = self.connection.makefile('rb', self.rbufsize)
         self.wfile = self.connection.makefile('wb', self.wbufsize)