wireprotoserver: rename abstractserverproto and improve docstring

The docstring isn't completely accurate for the current state
of the world. But it does describe the direction future patches
will be taking things.

Differential Revision: https://phab.mercurial-scm.org/D2065

mercurial/wireprotoserver.py

@@ -38,10 +38,13 b" SSHV1 = 'ssh-v1'"
 # to reflect BC breakages.
 SSHV2 = 'exp-ssh-v2-0001'
 
-class abstractserverproto(object):
-    """abstract class that summarizes the protocol API
+class baseprotocolhandler(object):
+    """Abstract base class for wire protocol handlers.
 
-    Used as reference and documentation.
+    A wire protocol handler serves as an interface between protocol command
+    handlers and the wire protocol transport layer. Protocol handlers provide
+    methods to read command arguments, redirect stdio for the duration of
+    the request, handle response types, etc.
     """
 
     __metaclass__ = abc.ABCMeta
@@ -104,7 +107,7 b' def decodevaluefromheaders(req, headerpr'
 
     return ''.join(chunks)
 
-class webproto(abstractserverproto):
+class webproto(baseprotocolhandler):
     def __init__(self, req, ui):
         self._req = req
         self._ui = ui
@@ -333,7 +336,7 b' def _handlehttperror(e, req, cmd):'
 
     return ''
 
-class sshserver(abstractserverproto):
+class sshserver(baseprotocolhandler):
     def __init__(self, ui, repo):
         self._ui = ui
         self._repo = repo