static async Task RunAsync()
{
HttpClient client = new HttpClient();
// This app uses IIS Express. It requires a localhost path and port. The base path can be configured in the application configuration (app.config in the
// project, or ChallengeConsoleApp.exe.config in the binaries folder) file. You may need to generate a virtual director for IIS first. To do this, open the
// web applicaton project, go to the project properties, go to the web tab, in the Servers section click "Create Virtual Directory". This will populate
// the Project URL with something like "http://localhost:58523/", which is the value you should paste into the app.config.
client.BaseAddress = new Uri(StaticUtilities.GetLocalhostBaseAddressSetting());
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
try
{
// Get the time from web app
// Case 1: normal, successful 200 response, should return the DateTime.
_theReturnValues = await GetTimeResultAsync(StaticUtilities.GetLocalhostBaseAddressSetting() + "GetHandler.ashx", client);
// Case 2: force a 500 response. To see this occur, comment out Case 1, uncomment this next line.
//_theReturnValues = await GetTimeResultAsync(StaticUtilities.GetLocalhostBaseAddressSetting() + "GetHandler.ashx/?force500=true", client);
// Case 3: timeout, or other exception error. To cause a real timeout, modify the "ProcessRequest" function in ChallengeWebApplication1 to include a very
// long sleep timer.
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
// In order to make ReadAsAsync work, needed to get nuget AspNet.WebApi.Client package, "install-package Microsoft.AspNet.WebApi.Client"
static async Task <WebReturnValues> GetTimeResultAsync(string path, HttpClient client)
{
// construct a default WebReturnValues
_theReturnValues = new WebReturnValues {
httpResponseValue = "", httpStatusCode = 500, internalStatusCode = 2, requestSentDateTimeUTC = "", responseReceivedDateTimeUTC = ""
};
try
{
_theReturnValues.requestSentDateTimeUTC = DateTime.UtcNow.ToString();
var response = await client.GetAsync(path, HttpCompletionOption.ResponseHeadersRead);
_theReturnValues.responseReceivedDateTimeUTC = DateTime.UtcNow.ToString(); // Since we used "await" for the GetAsync call, now should be the response datetime.
if (response.IsSuccessStatusCode)
{
_theReturnValues.httpResponseValue = await response.Content.ReadAsStringAsync();
_theReturnValues.httpStatusCode = 200;
_theReturnValues.internalStatusCode = 1;
_theReturnValues.statusString = "Success";
}
else if (response.StatusCode == System.Net.HttpStatusCode.InternalServerError) // Web app returned a 500 status code, probably because we forced it to with query string!
{
_theReturnValues.httpResponseValue = await response.Content.ReadAsStringAsync();
_theReturnValues.httpStatusCode = 500;
_theReturnValues.internalStatusCode = 2;
_theReturnValues.statusString = "Web app returned a 500 status code, probably because we forced it to with query string.";
}
//else if (response.StatusCode == System.Net.HttpStatusCode.GatewayTimeout || response.StatusCode == System.Net.HttpStatusCode.RequestTimeout) // These aren't server timeouts, they are not useful for this application.
//{
// _theReturnValues.httpResponseValue = await response.Content.ReadAsStringAsync();
// _theReturnValues.httpStatusCode = 408;
// _theReturnValues.internalStatusCode = -999;
//}
else
{
_theReturnValues.httpResponseValue = await response.Content.ReadAsStringAsync();
_theReturnValues.httpStatusCode = 500;
_theReturnValues.internalStatusCode = 2;
_theReturnValues.statusString = "Failed to get time from web app, unknown reason.";
}
}
catch (Exception e) // This exception will be cause either because our URL is bad, the web app is not running, or the server timed out. We're going to treat it as a timeout, mostly.
{
_theReturnValues.httpResponseValue = $"Exception caught. Message: {e.Message}";
_theReturnValues.httpStatusCode = 500;
_theReturnValues.internalStatusCode = -999; // Maybe a timeout.
_theReturnValues.responseReceivedDateTimeUTC = DateTime.UtcNow.ToString();
_theReturnValues.statusString = "This could either mean the HTTP response timed out, or it was an invalid request.";
return(_theReturnValues);
}
return(_theReturnValues);
}