I am running into a weird situation where the length of the data passed in
the elements leads to a Writetype mismatch message.
Here is snippet for the protobuf:
message QueryResponse
{
message QueryNode {
required string node_name = 1;
required string node_value = 2;
}
repeated QueryNode nodes = 3;
}
So this message has repeated elements of two strings.
When I create a response object and set the node_name and node_value such
that both the strings are small enough, it works flawlessly.
For example, if the length of the node_name string is 87 and that of
node_value is 36, adding 5 elements to the 'node' and sending it over tcp
and parsing it over the other side works fine.
However, if the node_name string is 87 chars in length and the node_value
is 38 (just two more characters), the same test fails with the following
stack trace:
File "/work/g..y", line 292, in run_query
query_resp.ParseFromString(query_nodes)
File "/.../local/protobuf-python/google/protobuf/message.py", line 159,
in ParseFromString
self.MergeFromString(serialized)
File "/.../local/protobuf-python/google/protobuf/reflection.py", line
1238, in MergeFromString
bytes_read = _DeserializeOneEntity(message_descriptor, self, decoder)
File "/.../local/protobuf-python/google/protobuf/reflection.py", line
1082, in _DeserializeOneEntity
raise RuntimeError('TODO(robinson): Wiretype mismatches not handled.')
RuntimeError: TODO(robinson): Wiretype mismatches not handled.
The overall message length is less that 720bytes, Even if i have one
element in the entire message but if the length of one of the string grows
by 2, it crashes with this exception.
I could not figure why is this happening.
Any ideas on how to debug this ? Just changing the lengths causes this to
fail.
When i dump the message without parsing on screen, i can see the data
correctly - not sure why the parser keeps failing.
Reducing the length of the node_value type by 2 chars makes everything work
again...
Any help would be greatly appreciated.
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