c# - Load multiple concatenated JSON objects from stream

Question

I read a couple of similar questions but didn't find any one related to JObject. Here's the problem: I have a Stream with concatenated JSON objects, i.e:

{"key1":"value1"}{"key2":"value2"}{"key3":"value3"}

Now, I want to read these objects one by one into JObject. Here's how I tried to do it:

public class JsonStreamReader : JsonTextReader
{
    public JsonStreamReader(Stream s) : base(new StreamReader(s)) {}
}

private void LoadJson(Stream s)
{
    var r = new JsonStreamReader(s) { SupportMultipleContent = true };
    var obj = JObject.Load(r);
    // ... get data from JObject ...
}

The problem here is that JObject.Load() reads all available data from stream, but parses only first object and discards all the rest. How do I deal with that?

And just in case of XY-problem (why do I need that): I want to transfer JSON messages via TCP stream. Because I use raw TCP stream, I need to know the size of message to read it. I decided to write small header with size and message type before each message, so I can read the header into a small buffer, get the size of the following message and then read it entirely.

Answer 1

You can do that by setting SupportMultipleContent on JsonReader to true:

Read Multiple Fragments With JsonReader

If there is an issue with using JObject.Load with that setting then use JsonConvert.DeserializeObject instead.