Initial checkin of gRPC to third_party/

third_party/grpc/src/python/grpcio/grpc/framework/alpha/exceptions.py

Index: third_party/grpc/src/python/grpcio/grpc/framework/alpha/exceptions.py
diff --git a/third_party/WebKit/LayoutTests/http/tests/websocket/workers/resources/echo_wsh.py b/third_party/grpc/src/python/grpcio/grpc/framework/alpha/exceptions.py
similarity index 77%
copy from third_party/WebKit/LayoutTests/http/tests/websocket/workers/resources/echo_wsh.py
copy to third_party/grpc/src/python/grpcio/grpc/framework/alpha/exceptions.py
index 429f58186e3fce43dc21e81e0f9d7e20c7e0bf70..5234d3b91cebbffc07efa29c8738614ec2196460 100644
--- a/third_party/WebKit/LayoutTests/http/tests/websocket/workers/resources/echo_wsh.py
+++ b/third_party/grpc/src/python/grpcio/grpc/framework/alpha/exceptions.py
@@ -1,4 +1,4 @@
-# Copyright 2010, Google Inc.
+# Copyright 2015, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
@@ -27,20 +27,22 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+"""Exceptions raised by GRPC.
 
-from mod_pywebsocket import msgutil
+Only GRPC should instantiate and raise these exceptions.
+"""
 
+import abc
 
-_GOODBYE_MESSAGE = 'Goodbye'
 
+class RpcError(Exception):
+  """Common super type for all exceptions raised by GRPC."""
+  __metaclass__ = abc.ABCMeta
 
-def web_socket_do_extra_handshake(request):
-    pass  # Always accept.
 
+class CancellationError(RpcError):
+  """Indicates that an RPC has been cancelled."""
 
-def web_socket_transfer_data(request):
-    while True:
-        line = msgutil.receive_message(request)
-        msgutil.send_message(request, line)
-        if line == _GOODBYE_MESSAGE:
-            return
+
+class ExpirationError(RpcError):
+  """Indicates that an RPC has expired ("timed out")."""