private ResponseAccessor <TReturnType> EndGetRequest <TReturnType>(ManualAsyncResult result)
{
try
{
result.TimeOutWait();
if (result.Error != null)
{
if (Con.AutoHost)
{
result = result.RequestRetryHandler.RetryRequest();
}
}
var responseStream = result.Response.GetResponseStream();
var responseAccesor = ReadStream(result, responseStream, 0);
return(new ResponseAccessor <TReturnType>()
{
Content = JsonConvert.DeserializeObject <TReturnType>(responseAccesor.Content),
});
}
catch (Exception ex)
{
return(new ResponseAccessor <TReturnType>()
{
Ex = ex
});
}
}
// ----------------------- post ---------------------- //
internal ManualAsyncResult RequestPost(ManualAsyncResult result)
{
try
{
result.HttpWebRequest.BeginGetRequestStream(result.WrapHandler(ar =>
{
try
{
var stream = result.HttpWebRequest.EndGetRequestStream(ar);
stream.Write(result.Bytes, 0, result.Bytes.Length);
}
catch (Exception ex)
{
result.Error = ex;
}
}), null);
}
catch (Exception ex)
{
result.Error = ex;
}
return(result);
}
internal AsyncRequestRetryHandler(HttpAsyncConnector httpConnector, ManualAsyncResult result)
{
RequestRetries = 0;
HttpAsyncConnector = httpConnector;
Result = result;
}
private ResponseAccessor <TReturnType> EndPostRequest <TReturnType>(ManualAsyncResult result)
{
try
{
result.TimeOutWait();
if (result.Error != null)
{
if (Con.AutoHost)
{
result = result.RequestRetryHandler.RetryRequest();
}
}
Stream responseStream = null;
var temp = new ManualAsyncResult();
result.HttpWebRequest.BeginGetResponse(temp.WrapHandler(ar =>
{
try
{
var response = result.HttpWebRequest.EndGetResponse(ar);
responseStream = response.GetResponseStream();
}
catch (Exception ex)
{
result.Error = ex;
}
}), null);
temp.TimeOutWait();
if (result.Error != null)
{
return(new ResponseAccessor <TReturnType>()
{
Ex = result.Error
});
}
var responseAccessor = ReadStream(result, responseStream, 0);
return(new ResponseAccessor <TReturnType>()
{
Content = JsonConvert.DeserializeObject <TReturnType>(responseAccessor.Content),
});
}
catch (Exception ex)
{
return(new ResponseAccessor <TReturnType>()
{
Ex = ex
});
}
}
internal TReturnType CompletePostRequest <TReturnType>(ManualAsyncResult result)
{
var response = EndPostRequest <TReturnType>(result);
if (response.Ex != null)
{
throw response.Ex;
}
return(response.Content);
}
private ManualAsyncResult SetUpHttpWebRequest(ManualAsyncResult result, string requestType, int timeout)
{
var http = (HttpWebRequest)WebRequest.Create(Con.GetUri(result.Path, result.Query).Uri);
http.Accept = "application/json";
http.ContentType = "application/json";
http.Method = requestType;
http.ReadWriteTimeout = timeout;
http.Timeout = timeout;
result.HttpWebRequest = http;
return(result);
}
// ----------------------- get ----------------------- //
internal ManualAsyncResult RequestGet(ManualAsyncResult result)
{
try
{
result.HttpWebRequest.BeginGetResponse(result.WrapHandler(ar =>
{
result.Response = result.HttpWebRequest.EndGetResponse(ar);
}), null);
}
catch (Exception ex)
{
result.Error = ex;
}
return(result);
}
internal ManualAsyncResult PreparePostRequest(ManualAsyncResult asyncResult)
{
asyncResult = SetUpHttpWebRequest(asyncResult, "Post", 5000);
asyncResult.RequestRetryHandler = new RequestRetryHandler(this, asyncResult);
try
{
asyncResult = RequestPost(asyncResult);
}
catch (Exception ex)
{
asyncResult.Error = ex;
}
return(asyncResult);
}
internal ManualAsyncResult PrepareGetRequestAsync <TReturnType>(Action <ResponseAccessor <TReturnType> > callback, string path, string query = null)
{
var asyncResult = new ManualAsyncResult
{
Path = path,
Query = query,
};
asyncResult = SetUpHttpWebRequest(asyncResult, "GET", 5000);
asyncResult.AsyncRequestRetryHandler = new AsyncRequestRetryHandler(this, asyncResult);
try
{
asyncResult.AsyncRequestRetryHandler.SetCallback(body =>
{
if (body.Ex != null)
{
callback(new ResponseAccessor <TReturnType>
{
Ex = body.Ex
});
}
else
{
callback(new ResponseAccessor <TReturnType>
{
Content = JsonConvert.DeserializeObject <TReturnType>(body.Content),
});
}
});
asyncResult = RequestGetAsync(asyncResult.AsyncRequestRetryHandler.Callback, asyncResult);
}
catch (Exception ex)
{
callback(new ResponseAccessor <TReturnType>
{
Ex = ex
});
}
return(asyncResult);
}
internal ManualAsyncResult PrepareGetRequest(string path, string query = null)
{
var asyncResult = new ManualAsyncResult
{
Path = path,
Query = query,
};
asyncResult = SetUpHttpWebRequest(asyncResult, "GET", 5000);
asyncResult.RequestRetryHandler = new RequestRetryHandler(this, asyncResult);
try
{
asyncResult = RequestGet(asyncResult);
}
catch (Exception ex)
{
asyncResult.Error = ex;
}
return(asyncResult);
}
internal ManualAsyncResult RetryRequest()
{
try
{
HttpConnector.Con.SetNewHost();
if (Result.HttpWebRequest.Method == "GET")
{
Result = HttpConnector.RequestGet(Result);
}
else if (Result.HttpWebRequest.Method == "Post")
{
Result = HttpConnector.RequestPost(Result);
}
Result.TimeOutWait();
if (Result.Error == null)
{
return(Result);
}
throw Result.Error;
}
catch (Exception)
{
RequestRetries++;
if (RequestRetries < 5)
{
return(RetryRequest());
}
throw new Exception("Too Many Request Failures");
}
}
// ------------------------- read -----------------------//
private ResponseAccessor <string> ReadStream(ManualAsyncResult result, Stream stream, int len)
{
var done = false;
var buffer = new byte[20000];
var response = new ResponseAccessor <string>();
do
{
try
{
var innerResult = new ManualAsyncResult();
stream.BeginRead(buffer, len, 20000, result.WrapHandler(innerResult.WrapHandler(ar =>
{
try
{
var readLen = stream.EndRead(ar);
if (readLen == 0)
{
stream.Close();
done = true;
response = new ResponseAccessor <string>
{
Content = Encoding.UTF8.GetString(buffer, 0, len)
};
innerResult.m_waitHandle.Set();
return;
}
var temp = buffer;
Array.Resize(ref temp, buffer.Length + readLen);
buffer = temp;
len += readLen;
}
catch (Exception ex)
{
done = true;
response = new ResponseAccessor <string>
{
Ex = ex
};
innerResult.m_waitHandle.Set();
stream?.Close();
}
})), null);
innerResult.AsyncWaitHandle.WaitOne();
}
catch (Exception ex)
{
response = new ResponseAccessor <string>
{
Ex = ex
};
done = true;
}
} while (!done);
return(response);
}
internal ManualAsyncResult RequestGetAsync(Action <ResponseAccessor <string> > callback, ManualAsyncResult result)
{
try
{
result.HttpWebRequest.BeginGetResponse(result.WrapHandler(ar =>
{
try
{
var responseStream = result.HttpWebRequest.EndGetResponse(ar);
using (var response = responseStream.GetResponseStream())
{
ReadStream(callback, result, response, 0);
}
}
catch (Exception ex)
{
result.Error = ex;
if (Con.AutoHost)
{
result.AsyncRequestRetryHandler.RetryAsyncRequest();
}
}
}), null);
}
catch (Exception ex)
{
result.Error = ex;
if (Con.AutoHost)
{
result.AsyncRequestRetryHandler.RetryAsyncRequest();
}
}
return(result);
}
internal ManualAsyncResult PreparePostRequestAsync <TReturnType>(Action <ResponseAccessor <TReturnType> > callback, ManualAsyncResult asyncResult)
{
asyncResult = SetUpHttpWebRequest(asyncResult, "Post", 5000);
asyncResult.AsyncRequestRetryHandler = new AsyncRequestRetryHandler(this, asyncResult);
try
{
asyncResult.AsyncRequestRetryHandler.SetCallback(body =>
{
if (body.Ex != null)
{
callback(new ResponseAccessor <TReturnType>
{
Ex = body.Ex
});
}
else
{
callback(new ResponseAccessor <TReturnType>
{
Content = JsonConvert.DeserializeObject <TReturnType>(body.Content),
});
}
});
RequestPostAsync(asyncResult.AsyncRequestRetryHandler.Callback, asyncResult);
}
catch (Exception e)
{
callback(new ResponseAccessor <TReturnType>
{
Ex = e
});
}
return(asyncResult);
}