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using Google.Protobuf;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using Tango.PMR.Synchronization;
namespace Tango.Transport.Web
{
public class WebTransportClient : IWebTransportClient
{
private HttpClient _httpClient;
private static JsonSerializerSettings _settings;
static WebTransportClient()
{
_settings = new JsonSerializerSettings()
{
};
}
public WebTransportClient()
{
_httpClient = new HttpClient();
}
public Task<Response> PostProto<Request, Response>(String url, Request request) where Request : class, IMessage where Response : class, IMessage
{
return Task.Factory.StartNew<Response>(() =>
{
var req = new ByteArrayContent(request.ToByteArray());
req.Headers.Add("Content-Type", "application/x-protobuf");
var response = _httpClient.PostAsync(url, req).Result;
var data = response.Content.ReadAsByteArrayAsync().Result;
if (response.StatusCode != System.Net.HttpStatusCode.OK)
{
HttpProtoException exception = HttpProtoException.Parser.ParseFrom(data);
throw new HttpException(exception.StatusCode, exception.Message);
}
Response dummy = Activator.CreateInstance<Response>() as Response;
return dummy.GetParser().ParseFrom(data) as Response;
});
}
public Task<Response> PostJson<Request, Response>(string url, Request request) where Request : class, IWebRequestMessage where Response : class, IWebResponseMessage
{
return Task.Factory.StartNew<Response>(() =>
{
var req = new ByteArrayContent(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(request, _settings)));
req.Headers.Add("Content-Type", "application/json");
var response = _httpClient.PostAsync(url, req).Result;
var data = response.Content.ReadAsStringAsync().Result;
try
{
response.EnsureSuccessStatusCode();
}
catch (HttpRequestException ex)
{
String message = JObject.Parse(data).GetValue("Message").ToString();
if (message == "Session Expired.")
{
throw new SessionExpiredException(ex.Message);
}
throw new HttpRequestException(ex.Message + " " + message);
}
return JsonConvert.DeserializeObject<Response>(data);
});
}
public void Dispose()
{
_httpClient.Dispose();
}
}
}
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