protocol-buffers

I'm implementing a client-server application, and am looking into various ways to serialize and transmit data. I began working with Xml Serializers, which worked rather well, but generate data slowly, and make large objects, especially when they need to be sent over the net. So I started looking into Protobuf, and protobuf-net. My problem lies in the fact that protobuf doesn't sent type information with it. With Xml Serializers, I was able to build a wrapper which would send and receive any various (serializable) object over the same stream, since object serialized into Xml contain the type

I have been trying to use protocol buffers in my Python program, but cannot get it to work. I'm running a Windows 8 machine and have tried Python 2.7.6 and Python 3.3. I downloaded the binary protocol buffer compiler for Python and used it to generate myProto_pb2.py from my myProto.proto file, but when I get the following error when I run my Python program: from the "import myProto_pb2" line, I get the following error when using Python 2.7.6 from protocol buffers version 2.5: from google.protobuf import descriptor as _descriptor ImportError: No module named google.protobuf How can I correctly

The Official documentation about map type says: map<key_type, value_type> map_field = N; ...where the key_type can be any integral or string type (so, any scalar type except for floating point types and bytes). The value_type can be any type . I want to define a map<string, repeated string> field, but it seems illegal on my libprotoc 3.0.0 , which complains Expected ">" . So I wonder if there is any way to put repeated string into map. A Possible workaround could be: message ListOfString { repeated string value = 1; } // Then define: map<string, ListOfString> mapToRepeatedString = 1; But

Google's Protocol Buffers allows you to store floats and doubles in messages. I looked through the implementation source code wondering how they managed to do this in a cross-platform manner, and what I stumbled upon was: inline uint32 WireFormatLite::EncodeFloat(float value) { union {float f; uint32 i;}; f = value; return i; } inline float WireFormatLite::DecodeFloat(uint32 value) { union {float f; uint32 i;}; i = value; return f; } inline uint64 WireFormatLite::EncodeDouble(double value) { union {double f; uint64 i;}; f = value; return i; } inline double WireFormatLite::DecodeDouble(uint64

I have an object that I de-serialize using protobuf in Python. When I print the object it looks like a python object, however when I try to convert it to json I have all sorts of problems. For example, if I use json.dumps() I get that the object (the generated code from protoc) does not contain a _ dict _ error. If I use jsonpickle I get UnicodeDecodeError: 'utf8' codec can't decode byte 0x9d in position 97: invalid start byte . Test code below is using jsonpickle with the error shown above. if len(sys.argv) < 2: print ("Error: missing ser file") sys.exit() else : fileLocation = sys.argv[1]