ó mÜJ]c@`s“dZddlmZmZmZmZddlZejeƒZ ddl m Z ddl m Z ddlmZd Zd efd „ƒYZdS( uR Encapsulate handling of all Bokeh Protocol messages a Bokeh server may receive. i(tabsolute_importtdivisiontprint_functiontunicode_literalsN(tgeni(t ServerSessioni(t ProtocolErroruProtocolHandlertProtocolHandlercB`s;eZdZd„Zejd„ƒZejd„ƒZRS(u× A Bokeh server may be expected to receive any of the following protocol messages: * ``EVENT`` * ``PATCH-DOC`` * ``PULL-DOC-REQ`` * ``PUSH-DOC`` * ``SERVER-INFO-REQ`` The job of ``ProtocolHandler`` is to direct incoming messages to the right specialized handler for each message type. When the server receives a new message on a connection it will call ``handler`` with the message and the connection that the message arrived on. Most messages are ultimately handled by the ``ServerSession`` class, but some simpler messages types such as ``SERVER-INFO-REQ`` may be handled directly by ``ProtocolHandler``. Any unexpected messages will result in a ``ProtocolError``. cC`s`tƒ|_tj|jd s"