Deserializing C++ string in WCF service using Json converter

I am trying to communicate with C# wcf service which takes josn as an input where json contains image data, i wrote C# client where I am converting the object (InputData) which contains image as byte to json and sending it to server.

Client side:
InputData RequestData; //copied image data into RequestData obj
String jsonRequest = (new JavaScriptSerializer()).Serialize(RequestData); //converting obj to json

where :
public class InputData
{
private byte RawImage = null;
public byte FrontImage
{
get return this.FrontRawImage;
set if (null != value) { FrontRawImage = value.ToArray(); }
}
}


Server side:
//deserialize and get the object
InputData requestData = JsonConvert.DeserializeObject<InputData>(jsonData);


I am able to do this with C# client but the problem is, I have to communicate this WCF service from C++ client where I am converting image(jpg) data to string **(utf-8)**and then creating json and sending it to the service but on server side I am not able deserialze this json to InputData object (returning null with an exception unexpected characters).

//I am getting an exception on server side that says "unexpected character in the requested data"
InputData requestData = JsonConvert.DeserializeObject(jsonData);

I debug in the server side =>
json request data from c# client looks like

"{"Image":[92,34,92,34,36,73, 56.......huge image data here]}"

where [92,34,92,34,36,73, 56.......huge image data here] is actual image data in json.

but when i send same request data from c++ it looks like

"{"Image": ÉGÉìÉRÅ[ÉfÉBÉ.........data}"

so here I am getting an error while deserializing the json data using

InputData requestData = JsonConvert.DeserializeObject<InputData>(jsonData);


why am i not able to deserialize the data back to object here when request comes from c++ ?

could you please advise me a way to send this image data as string to the wcf service in C++ where the service could successfully deserialize the data back to the object.

is there a way that i can convert my image data something like this [92,34,92,34,........] in C++ so that that server can deserialize the data properly (I may be wrong).

Thanks in advance.

1 Answer
1

wcf use DataContract in order to serialize. but you tried to serialize the input with newtonsoft. if you want to serialize the input you can use this method:

DataContract

newtonsoft

public static string ToJSON<T>(this T obj) where T : class
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(T));
using (MemoryStream stream = new MemoryStream())
{
serializer.WriteObject(stream, obj);
return Encoding.Default.GetString(stream.ToArray());
}
}


i strongly suggest in order to avoid this kind of problems use base64 instead of byte array.

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