protobuf-net

问题 I'm using Protobuf for the communication between my web client and server (C#), using WebSocket. On the client, the de/serialization is done through Protobuf.js and, on the server, using protobuf-net. The problem is that, when using aggregation with abstract classes, protobuf-net can't deserialize the data sent by Protobuf.js. This is the stack trace: ProtoException: No parameterless constructor found for Base. at ProtoBuf.Meta.TypeModel.ThrowCannotCreateInstance(Type type) na c:\Dev\protobuf

问题 Previously, we serialized a property as a List<byte> Now we want to change it to be a byte[] . It was out understanding that you should be able to swap out collection types freely between version but we get a ProtoBuf.ProtoException [TestFixture, Category("Framework")] class CollectionTypeChange { [Test] public void TestRoundTrip() { var bytes = new List<byte>() {1,2,4}; var a = new ArrayHolder(bytes); var aCopy = Deserialize<ArrayHolder>(Serialize(a)); //Passes Assert.That(aCopy

问题 Is it possible to (de)serialize a POCO type using neither protobuf-net attributes nor explicitly adding types into the model? 回答1: At the moment - in short, no. It needs to have a basic understanding of how you intend it to operate. I guess maybe I could add something to let you specify a default strategy for completely unadorned types (things that aren't DataContract , ProtoContract or XmlType ), but the most appropriate option there would be "all public members" (much like XmlSerializer ).

问题 while playing with the newly released protobuf.net, we are encountering the issue illustrated in the code below: [ProtoContract] class Node { public Node() { ChildLinks = new List<Link>(); ParentLinks = new List<Link>(); } [ProtoMember(1, IsRequired = true)] public string Data { get; set; } [ProtoMember(2, IsRequired = true)] public List<Link> ChildLinks { get; set; } [ProtoMember(3, IsRequired = true)] public List<Link> ParentLinks { get; set; } public void AddChild(Node child) { Link link =

问题 I am looking for the protobuf-net equivalent to the C++ API Message::ByteSize to find out the serialized message length in bytes. 回答1: I haven't played with the C++ API, so you'll have to give me a bit more context / information. What does this method do? Perhaps a sample usage? If you are consuming data from a stream, there are "WithLengthPrefix" versions to automate limiting to discreet messages, or I believe the method to just read the next length from the stream is on the public API. If

问题 I have been using protobuf.net for a while and it is excellent. I can have a class which is inherited from a base class, I can serialise the derived class by using ProtoInclude statements in the base class. If my base class originally had only say two ProtoInclude statements when the object was serialised, say [ProtoInclude(100, typeof(Vol_SurfaceObject))] [ProtoInclude(200, typeof(CurveObject))] internal abstract class MarketDataObject I can still deserialise that same object in to code that

问题 This question is related to this one: https://stackoverflow.com/questions/7906356/how-to-solve-a-a-reference-tracked-object-changed-reference-during-deserializat Since the above post has been closed, I created a new one that includes the test code to reproduce the problem and the exception stack trace. What is going here, why the error? Also I am not clear on the tag for the ProtoInclude. If the tag is equal to a ProtoMember then I get an exception about a duplicate field number. So, I

问题 It was mentioned here that protobuf-net can be used like a SAX parser, but I couldn't find examples for this that did not require a more or less complete description of the object to parse. (Skip to point 2) for the question, 1) just provides some context) 1) Perhaps I should provide some context first: I am currently using JSON.Net in my project and have created several JSONConverters to customize how various types are serialized – basically all major types have hand-written serialization

问题 I need to exchange both protobuf-net objects and files between computers and am trying to figure out the best way to do that. Is there a way for A to inform B that the object that follows is a protobuf or a file? Alternately, when a file is transmitted, is there a way to know that the file has ended and the Byte[] that follows is a protobuf? Using C# 4.0, Visual Studio 2010 Thanks, Manish 回答1: This has nothing to do with protobuf or files, and everything to do with your comms protocol,

问题 I have a class with many properties, one of them are byte[] property. I would like to send this class to another server using MSMQ. But before sending it I would like to serialize it using ProtoBuf-Net. Is it possible to attach ProtoBuf-Net serializer to MSMQ? Frankly speaking I do not understand how to send class to queue. I have tried to use code below to put class to MSMQ queue but got exception "There was an error generating the XML document." EntityBase is a class which I would like to