/// <summary>Submits a POST request. Returns null on success, otherwise returns error information.</summary>
/// <param name="baseUrl">Root URL for the API.</param>
/// <param name="tableName">The table name to add to the end of the baseUrl.</param>
/// <param name="data">The data payload to post.</param>
/// <param name="cred">Authentication credentials if needed.</param>
/// <param name="canceller">A object that can be sued to canel the request. </param>
/// <returns>Null on success otherwise an error message.</returns>
public static async Task <string> PostTable([NotNull] string baseUrl, [NotNull] string tableName,
[NotNull] string data, [CanBeNull] Creds cred = null, [CanBeNull] CancellationToken?canceller = null)
{
if (!IsInternetAvailable())
{
//Responses starting with "Error:" should be filtered as failures.
return("Error: No Internet, post request aborted.");
}
// Must add the AllowUI=false setting otherwise it tries enumerating UI and doesn't report errors properly.
var client = new HttpClient(new HttpBaseProtocolFilter {
AllowUI = false
});
var tokenHeader = "X-ZUMO-AUTH";
var headers = client.DefaultRequestHeaders;
if (cred != null)
{
headers.Add(tokenHeader, cred.Token);
}
var url = UrlCombiner.CombineAsSeparateElements(baseUrl, tableName);
if (canceller == null)
{
var cs = new CancellationTokenSource(TimeSpan.FromSeconds(DefaultTimeout));
canceller = cs.Token;
}
try
{
var buffUtf8 = CryptographicBuffer.ConvertStringToBinary(data, BinaryStringEncoding.Utf8);
IHttpContent content = new HttpBufferContent(buffUtf8, 0, buffUtf8.Length);
var body = await content.ReadAsStringAsync();
content.Headers.ContentType = new HttpMediaTypeHeaderValue("application/json");
var response = await client.PostAsync(url, content).AsTask((CancellationToken)canceller);
var it = response.Content;
return(response.IsSuccessStatusCode
? null
: $"Error: Request returned {response.StatusCode} ({response.ReasonPhrase}), Content:{it}");
}
catch (TaskCanceledException)
{
Debug.WriteLine($"Req '{tableName}' cancelled ot timedout.");
return("Error: Cancelled or timed out.");
}
catch (Exception ex)
{
Debug.WriteLine($"Req '{tableName}' error: {ex}");
return($"Error: NetFail: {ex.Message}, {ex.InnerException}, END");
}
}
/// <summary>Fetches a table, catches errors either returns the resonse or a message starting with
/// "Error". A valid message will be Json starting enad ending with either [] or {}.</summary>
/// <param name="baseUrl">Base url of the request API.</param>
/// <param name="tableName">The name of the table to put on the end of the baseUrl.</param>
/// <param name="cred">A credentials object used to authenticate the request, optional.</param>
/// <param name="canceller">A token that can be used to cancell the request.</param>
/// <returns>The response or an error message starting with "Error:"</returns>
public static async Task <string> GetTable([NotNull] string baseUrl, [NotNull] string tableName,
[CanBeNull] Creds cred = null, [CanBeNull] CancellationToken?canceller = null)
{
if (!IsInternetAvailable())
{
//Responses starting with "Error:" should be filtered as failures.
return("Error: No Internet, get request aborted.");
}
// Must add the AllowUI=false setting otherwise it tries enumerating UI and doesn't report errors properly.
var client = new HttpClient(new HttpBaseProtocolFilter {
AllowUI = false
});
var tokenHeader = "X-ZUMO-AUTH";
var headers = client.DefaultRequestHeaders;
if (cred != null)
{
headers.Add(tokenHeader, cred.Token);
}
var url = UrlCombiner.CombineAsSeparateElements(baseUrl, tableName);
if (canceller == null)
{
var cs = new CancellationTokenSource(TimeSpan.FromSeconds(DefaultTimeout));
canceller = cs.Token;
}
try
{
var response = await client.GetStringAsync(url).AsTask((CancellationToken)canceller);
return(response);
}
catch (TaskCanceledException)
{
Debug.WriteLine($"Req '{tableName}' cancelled ot timedout.");
return("Error: Cancelled or timed out.");
}
catch (Exception ex)
{
Debug.WriteLine($"Req '{tableName}' error: {ex}");
return($"Error: NetFail: {ex.Message}, {ex.InnerException}, END");
}
}
private async Task <bool> TryConnect()
{
if (SettingsService.Instance.IsLoggedIn == false)
{
return(false);
}
_webSocket = new MessageWebSocket();
_webSocket.Control.MessageType = SocketMessageType.Utf8;
_webSocket.Closed += SocketClosed;
_webSocket.MessageReceived += MessageRecieved;
var tokenHeader = "X-ZUMO-AUTH";
var creds = Creds.FromUserIdAndToken(SettingsService.Instance.CredUserId, SettingsService.Instance.CredToken);
_webSocket.SetRequestHeader(tokenHeader, creds.Token);
try
{
var uri = new Uri("wss://greenhouseapi.azurewebsites.net/api/Websocket");
await _webSocket.ConnectAsync(uri);
_messageWriter = new DataWriter(_webSocket.OutputStream);
_reconnectionAttempt = 0;
LoggingService.LogInfo("Websocket connected", Windows.Foundation.Diagnostics.LoggingLevel.Information);
return(true);
}
catch (Exception ex)
{
var error = WebSocketError.GetStatus(ex.HResult);
if (error == Windows.Web.WebErrorStatus.CannotConnect)
{
LoggingService.LogInfo($"Websocket cannot connect", Windows.Foundation.Diagnostics.LoggingLevel.Information);
}
else
{
LoggingService.LogInfo($"Websocket connection failed due to {error}, full exception: {ex.ToString()}", Windows.Foundation.Diagnostics.LoggingLevel.Warning);
}
_reconnectionAttempt++;
CleanUp();
return(false);
}
}
private async Task <bool> TryConnect()
{
if (Settings.Instance.IsLoggedIn == false)
{
return(false);
}
_webSocket = new MessageWebSocket();
_webSocket.Control.MessageType = SocketMessageType.Utf8;
_webSocket.Closed += SocketClosed;
_webSocket.MessageReceived += MessageRecieved;
var tokenHeader = "X-ZUMO-AUTH";
var creds = Creds.FromUserIdAndToken(Settings.Instance.CredUserId, Settings.Instance.CredToken);
_webSocket.SetRequestHeader(tokenHeader, creds.Token);
try
{
var uri = new Uri("wss://greenhouseapi.azurewebsites.net/api/Websocket");
await _webSocket.ConnectAsync(uri);
_messageWriter = new DataWriter(_webSocket.OutputStream);
_reconnectionAttempt = 0;
Debug.WriteLine("Websocket connected");
return(true);
}
catch
{
Debug.WriteLine("Websocket connection failed");
_reconnectionAttempt++;
CleanUp();
return(false);
}
}
