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using Google.Protobuf;
using System;
using System.IO;
using System.Net;
using System.Net.Http;
using System.Net.Http.Formatting;
using System.Net.Http.Headers;
using System.Threading.Tasks;
using Tango.PMR.Stubs;
namespace Tango.MachineService
{
public class ProtoBufFormatter : MediaTypeFormatter
{
private static readonly MediaTypeHeaderValue mediaType = new MediaTypeHeaderValue("application/x-protobuf");
public ProtoBufFormatter()
{
SupportedMediaTypes.Add(mediaType);
}
public static MediaTypeHeaderValue DefaultMediaType
{
get { return mediaType; }
}
public override bool CanReadType(Type type)
{
return true;
}
public override bool CanWriteType(Type type)
{
return true;
}
public override Task<object> ReadFromStreamAsync(Type type, Stream stream, HttpContent content, IFormatterLogger formatterLogger)
{
var tcs = new TaskCompletionSource<object>();
try
{
MessageParser parser = type.GetProperty("Parser").GetValue(null, null) as MessageParser;
IMessage req = parser.ParseFrom(stream);
tcs.SetResult(req);
}
catch (Exception ex)
{
tcs.SetException(ex);
}
return tcs.Task;
}
public override Task WriteToStreamAsync(Type type, object value, Stream stream, HttpContent content, TransportContext transportContext)
{
var tcs = new TaskCompletionSource<object>();
try
{
(value as IMessage).WriteTo(stream);
tcs.SetResult(null);
}
catch (Exception ex)
{
tcs.SetException(ex);
}
return tcs.Task;
}
}
}
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