Rename self.client to self.request, ie adapt to:

>commit b9e1295f7a
>    Prepare for solving https://github.com/kanaka/websockify/issues/71:
>
>    Rename self.client to self.request, since this is what standard
>    SocketServer request handlers are using.

tests/echo.py

@@ -28,21 +28,21 @@ class WebSocketEcho(WebSocketServer):
         cqueue = []
         c_pend = 0
         cpartial = ""
-        rlist = [self.client]
+        rlist = [self.request]
 
         while True:
             wlist = []
 
-            if cqueue or c_pend: wlist.append(self.client)
+            if cqueue or c_pend: wlist.append(self.request)
             ins, outs, excepts = select.select(rlist, wlist, [], 1)
             if excepts: raise Exception("Socket exception")
 
-            if self.client in outs:
+            if self.request in outs:
                 # Send queued target data to the client
                 c_pend = self.send_frames(cqueue)
                 cqueue = []
 
-            if self.client in ins:
+            if self.request in ins:
                 # Receive client data, decode it, and send it back
                 frames, closed = self.recv_frames()
                 cqueue.extend(frames)