/// <summary>
/// ProcessRequests runs async in separate thread until Stop() or received a quit request
/// The IResponseHandler will be called on the original calling thread after each request processed
/// </summary>
public async void ProcessRequestsAsync(IResponseHandler handler)
{
while (_active)
{
HttpServiceResponse hostResponse = null;
await Task.Run(async() =>
{
try
{
hostResponse = await GetContextAsync();
}
catch (Exception err)
{
}
}).ConfigureAwait(true);
// calls handler to process the response
handler?.Process(hostResponse);
// stop the loop if quit requested
if (_quitRequestHandler.GetAndResetQuitRequested)
{
break;
}
}
Stop();
}
/// <summary>
/// derived class must implement to handle Post request
/// </summary>
protected override HttpServiceResponse ProcessPostRequest(HttpServiceContext context)
{
SubscriptionData subscriptionData = null;
string json = GetFromRequestStream(context.Context.Request);
try
{
subscriptionData = JsonConvert.DeserializeObject <SubscriptionData>(json);
}
catch (Exception err)
{
return(CreateResponseForBadRequest(context, Name, $"InvalidSubscription: {json}"));
}
if (!ValidateSubscriptionData(subscriptionData))
{
return(CreateResponseForBadRequest(context, Name));
}
HttpServiceResponse response = null;
HttpTargetSite target = subscriptionData.Target;
string invalidList = string.Empty;
int okCount = 0;
foreach (SubscriptionItem item in subscriptionData.Items)
{
bool ok = Subscribe(item, target);
if (ok)
{
okCount++;
}
else
{
if (!string.IsNullOrEmpty(invalidList))
{
invalidList += ", ";
}
invalidList += $"{item.Node}.{item.Data}";
}
}
if (string.IsNullOrEmpty(invalidList))
{
response = CreateSuccessResponse(context, Name, 200, null);
}
else
{
string invalidJson = $"{{\"subscriptionError\": \"{invalidList}\"}}";
if (okCount > 0)
{
response = CreateSuccessResponse(context, Name, 206, invalidJson);
}
else
{
CreateResponse(context, Name, false, 400, invalidJson);
}
}
return(response);
}
private async Task InspectResult <TResponse>(HttpServiceResponse <TResponse> result, string successMsg)
{
if (!result.Success)
{
ShowMessage(result.ErrorMessage, MessageType.Error);
return;
}
ShowMessage(successMsg, MessageType.Success);
await Reload();
}
/// <summary>
/// display the response after a request
/// </summary>
void IResponseHandler.Process(HttpServiceResponse hostResponse)
{
if (hostResponse != null)
{
HttpListenerRequest request = hostResponse.Request;
HttpListenerResponse response = hostResponse.Response;
if (hostResponse.Success)
{
TextLabel.Text = $"{request.HttpMethod} {request.Url.AbsoluteUri} Status: {response.StatusCode} Result:\n{hostResponse.Content}";
}
else
{
TextLabel.Text = $"{request.HttpMethod} {request.Url.AbsoluteUri} Status: {response.StatusCode} Result:\n{hostResponse.Content}\n Error:{hostResponse.ErrorMessage}";
}
}
}
