I tried to execute my application Rest api. Using a breakpoint, I found a problm in this line:
expenses.AmountTTC = Convert.ToDecimal(ttc.Text);
The error is "Specified cast is not valid".
AmountTTC has the type decimal? in the model , same for my service(i have two projects, one for the services and anthor for my mobile application).
private void Button_Clicked(object sender, EventArgs e)
{
ajoutD.Clicked += async delegate
{
try
{
LoginViews expenses = new LoginViews();
expenses.Name = nameLib.Text;
expenses.StartDate = dataDe.Date;
expenses.EndDate = dateAu.Date;
datenow.Date = DateTime.Now;
expenses.Description = description.Text;
expenses.CurrencyId = Convert.ToInt32(devises.Id);
expenses.AmountTTC = Convert.ToDecimal(ttc.Text);
remb.Text = expenses.AmountReimbursed.ToString();
expenses.Remboursable = Convert.ToBoolean(isremboursable);
expenses.Provider = marchand.Text;
HttpClient httpClient = new HttpClient();
HttpResponseMessage response;
var json = JsonConvert.SerializeObject(expenses);
var content = new StringContent(json, Encoding.UTF8, "application/json");
response = await httpClient.PostAsync(url, content);
AuthResponse responseData = JsonConvert.DeserializeObject<AuthResponse>(response?.Content?.ReadAsStringAsync()?.Result);
if (responseData.data.Success)
{
await DisplayAlert("heey", "connexion done", "ok");
}
else
{
await DisplayAlert("wake up !", responseData.data.ErrorMessage, "attention");
}
}catch(Exception eee)
{
string msg = eee.ToString();
}
};
}
Related
I want to use HttpClient to make requests using a certificate.
I generated a dev certificate using the following command
dotnet dev-certs https -ep dev_cert.pfx -p 1234
So I created an API to use that certificate. Here is the implementation.
public static class AuthenticationExtension
{
public static void ConfigureAuthetication(this IServiceCollection services)
{
services.AddAuthentication(CertificateAuthenticationDefaults.AuthenticationScheme)
.AddCertificate(options =>
{
var cert = new X509Certificate2(#"D:\dev_cert.pfx", "1234");
options.AllowedCertificateTypes = CertificateTypes.All;
options.ChainTrustValidationMode = X509ChainTrustMode.CustomRootTrust;
options.CustomTrustStore = new X509Certificate2Collection { cert };
options.RevocationMode = X509RevocationMode.NoCheck;
options.ValidateCertificateUse = false;
options.Events = new CertificateAuthenticationEvents
{
OnCertificateValidated = context =>
{
var validationService = context.HttpContext.RequestServices.GetService<ClientCertificateValidationService>();
if (validationService != null && validationService.ValidateCertificate(context.ClientCertificate))
{
Console.WriteLine("Success");
context.Success();
}
else
{
Console.WriteLine("invalid cert");
context.Fail("invalid cert");
}
return Task.CompletedTask;
},
OnChallenge = context =>
{
return Task.CompletedTask;
},
OnAuthenticationFailed = context =>
{
Console.WriteLine("Failed");
return Task.CompletedTask;
}
};
});
services.AddAuthorization();
}
}
I added the Authorize attribute in the controller method
[HttpGet(Name = "GetWeatherForecast")]
[Authorize]
public IEnumerable<WeatherForecast> Get()
{
return Enumerable.Range(1, 5).Select(index => new WeatherForecast
{
Date = DateTime.Now.AddDays(index),
TemperatureC = Random.Shared.Next(-20, 55),
Summary = Summaries[Random.Shared.Next(Summaries.Length)]
})
.ToArray();
}
I tested the request using Postman and it worked as expected.
Then, I created a console app to make the request using HttpClient. It failed always with the Forbidden Status code.
So I tested using the obsolete WebRequest. And It worked as expected.
Here is the implementation for that
using System.Net;
using System.Security.Cryptography.X509Certificates;
var handler = new HttpClientHandler();
X509Certificate2Collection certificates = new X509Certificate2Collection();
certificates.Import(#"D:\dev_cert.pfx", "1234", X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet);
handler.ClientCertificates.AddRange(certificates);
using var client = new HttpClient(handler);
client.BaseAddress = new Uri("https://localhost:7148/");
try
{
var response = await client.GetAsync("weatherforecast/");
if (response.IsSuccessStatusCode)
{
var responseContent = await response.Content.ReadAsStringAsync();
Console.WriteLine(responseContent);
}
else
{
Console.WriteLine($"Failed {response.StatusCode}");
}
}
catch (Exception ex)
{
Console.WriteLine($"Failed {ex}");
}
string host = #"https://localhost:7148/weatherforecast";
try
{
ServicePointManager.ServerCertificateValidationCallback = (a, b, c, d) => true;
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(host);
req.AllowAutoRedirect = true;
req.ClientCertificates = certificates;
req.Method = "GET";
WebResponse resp = req.GetResponse();
Stream stream = resp.GetResponseStream();
using (StreamReader reader = new StreamReader(stream))
{
string line = reader.ReadLine();
while (line != null)
{
Console.WriteLine(line);
line = reader.ReadLine();
}
}
stream.Close();
}
catch (Exception e)
{
Console.WriteLine(e);
}
Console.ReadLine();
My question is... Since the WebRequest is obsolete what I can do to make the HttpClient work?
Thank you in Advance!
I went ahead and implemented an ASP .Net Core file upload controller per the documentation and it requires using a [DisableFormValueModelBinding] attribute for streaming large files. I got that working fine. Unfortunately, when using that attribute it seems to block my JSON properties coming in from the form.
Is there any way to get both the file and the form data here? Here is my controller code (the request.form calls are where I am having issues):
[Route("{caseNbr:int}/Document")]
[ResponseType(typeof(CaseDocumentModel))]
[DisableFormValueModelBinding]
[HttpPost]
public async Task<IActionResult> PostDocument(int caseNbr)
{
string errorTrackingFileName = string.Empty;
try
{
UserSessionModel userSessionModel = SessionExtensions.CurrentUserSession;
if (!MultipartRequestHelper.IsMultipartContentType(Request.ContentType))
{
return BadRequest("Bad Request");
}
var boundary = MultipartRequestHelper.GetBoundary(MediaTypeHeaderValue.Parse(Request.ContentType), _defaultFormOptions.MultipartBoundaryLengthLimit);
var reader = new MultipartReader(boundary, HttpContext.Request.Body);
var section = await reader.ReadNextSectionAsync();
while (section != null)
{
var hasContentDispositionHeader = ContentDispositionHeaderValue.TryParse(section.ContentDisposition, out var contentDisposition);
if (hasContentDispositionHeader)
{
if (!MultipartRequestHelper.HasFileContentDisposition(contentDisposition))
{
return BadRequest("Bad Request");
}
var fileName = WebUtility.HtmlEncode(contentDisposition.FileName.Value);
errorTrackingFileName = fileName;
var trustedFileNameForFileStorage = fileName; //Path.GetRandomFileName();
var streamedFileContent = await FileHelpers.ProcessStreamedFile(section, contentDisposition, ModelState, _permittedExtensions, _fileSizeLimit);
if (!ModelState.IsValid)
{
return BadRequest("Bad Request");
}
using (var targetStream = System.IO.File.Create(Path.Combine(_tempFilePath, trustedFileNameForFileStorage)))
{
await targetStream.WriteAsync(streamedFileContent);
**//This is where I am having trouble:**
string descrip = HttpContext.Request.Form["Description"].ToString();
string docType = HttpContext.Request.Form["DocType"].ToString() ?? "Document";
bool isGeneralFileUpload = false;
if (string.IsNullOrWhiteSpace(Request.Form["GeneralFileUpload"]) == false && AppHelper.IsBool(Request.Form["GeneralFileUpload"]))
isGeneralFileUpload = bool.Parse(Request.Form["GeneralFileUpload"]);
int transcriptionJobId = 0;
if (string.IsNullOrWhiteSpace(Request.Form["TranscriptionJobId"]) == false && AppHelper.IsNumeric(Request.Form["TranscriptionJobId"]))
transcriptionJobId = int.Parse(Request.Form["TranscriptionJobId"]);
CaseDocumentModel createdCaseDocumentModel;
if (docType.Equals("Dictation"))
createdCaseDocumentModel = DictationRepository.ProcessDictationFile(userSessionModel.DBID, caseNbr, _tempFilePath, fileName, userSessionModel);
else if (isGeneralFileUpload)
createdCaseDocumentModel = DashboardAdjusterRepository.CreateGeneralFileUploadDocument(_tempFilePath, fileName, userSessionModel, docType, descrip);
else if (docType.Equals("Transcription"))
createdCaseDocumentModel = TranscriptionRepository.UploadTranscriptionFile(userSessionModel.DBID, _tempFilePath, fileName, userSessionModel, transcriptionJobId);
else
createdCaseDocumentModel = CaseRepository.CreateCaseDocumentRecord(userSessionModel.DBID, caseNbr, descrip, docType, _tempFilePath, fileName, userSessionModel);
return Ok(createdCaseDocumentModel);
}
}
// Drain any remaining section body that hasn't been consumed and
// read the headers for the next section.
section = await reader.ReadNextSectionAsync();
}
}
catch (Exception ex)
{
AppHelper.WriteErrorLog("CaseController PostDocument failed due to " + ex.Message + " case number was " + caseNbr + " file name was " + errorTrackingFileName);
return BadRequest("Bad Request");
}
return BadRequest("Bad Request");
}
Here is a sample call with Postman:
Screen shot of Postman
Am trying to create a an azure function that is triggered in a Logic Apps,
The functions purpose is to web crawl certain web sites, take the desired information, compare that with a a SQL Server database in Azure, compare if we already have that information if not add it.
My issue is that when ever i run it I get the Server 500 error, I assume its accessing the database that cause. Help?
public static async Task<IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req, ILogger log
)
{
log.LogInformation("C# HTTP trigger function processed a request.");
string RequestBody = await new StreamReader(req.Body).ReadToEndAsync();
{
return await CrawlBlog(0, RequestBody);
}
}
private static async Task<IActionResult> CrawlBlog(int Picker, string req)
{
int BlogPicker = Picker;
string TheResult = req;
//Get the url we want to test
var Url = "";
if (BlogPicker == 0)
{
Url = "*********";
}
else if (BlogPicker == 1)
{
Url = "*********";
}
/*
else if (BlogPicker == 2)
{
Url = "https://azure.microsoft.com/en-in/blog/?utm_source=devglan";
}
*/
else
{
TheResult = "False we got a wrong pick";
return (ActionResult)new OkObjectResult
( new {TheResult });
}
var httpClient = new HttpClient();
var html = await httpClient.GetStringAsync(Url);
var htmlDocument = new HtmlDocument();
htmlDocument.LoadHtml(html);
//a list to add all availabel blogs we found
var Blog = new List<BlogStats>();
switch (BlogPicker)
{
case 0:
{
var divs =
htmlDocument.DocumentNode.Descendants("div")
.Where(node => node.GetAttributeValue("class", "").Equals("home_blog_sec_text")).ToList();
foreach (var divo in divs)
{
var Blogo = new BlogStats
{
Summary = divo.Descendants("p").FirstOrDefault().InnerText,
Link = divo.Descendants("a").FirstOrDefault().ChildAttributes("href").FirstOrDefault().Value,
Title = divo.Descendants("a").FirstOrDefault().InnerText
};
Blog.Add(Blogo);
}
break;
}
case 1:
{
var divs =
htmlDocument.DocumentNode.Descendants("div")
.Where(node => node.GetAttributeValue("class", "").Equals("post_header_title two_third last")).ToList();
foreach (var divo in divs)
{
//string TheSummary = "we goofed";
var ThePs = divo.Descendants("p").ToList();
var Blogo = new BlogStats
{
Summary = ThePs[1].GetDirectInnerText(),
Link = divo.Descendants("a").LastOrDefault().ChildAttributes("href").FirstOrDefault().Value,
Title = divo.Descendants("a").FirstOrDefault().InnerText
};
Blog.Add(Blogo);
}
break;
}
}
TheResult = await SqlCheck(Blog[0].Title, Blog[0].Summary, Blog[0].Link); //error 500
return (ActionResult)new OkObjectResult
(
new
{
TheResult
}
);
}
public static async Task<string> SqlCheck(string Tit, string Sumy, string Lin)
{
SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder();
builder.DataSource = "flygon.database.windows.net";
builder.UserID = "*****";
builder.Password = "********";
builder.InitialCatalog = "torkoal";
System.Data.DataSet ds = new System.Data.DataSet();
SqlConnection connection = new SqlConnection(builder.ConnectionString);
connection.Open();
SqlCommand CheckCommand = new SqlCommand("SELECT * FROM TableBoto WHERE Link = #id3 ", connection);
CheckCommand.Parameters.AddWithValue("#id3", Lin);
SqlDataAdapter dataAdapter = new SqlDataAdapter(CheckCommand);
dataAdapter.Fill(ds);
int i = ds.Tables[0].Rows.Count;
if (i > 0)
{
return $" We got a Duplicates in title : {Tit}";
}
try
{
{
string query = $"insert into TableBoto(Title,Summary,Link) values('{Tit}','{Sumy}','{Lin}');";
SqlCommand command = new SqlCommand(query, connection);
SqlDataReader reader = await command.ExecuteReaderAsync();
reader.Close();
}
}
catch (SqlException)
{
// Console.WriteLine(e.ToString());
}
connection.Close();
return $" Success Ign +{Tit} + Ign {Sumy}+ Ign {Lin} Ign Success SQL ";
}
}
500 HTTP status code is a generic code which means that the server was not able to process the request due to some issues, First step would be to add some exception handling to your function and see if the failure occurs and where it occurs.
On Side note, you should not use HTTP client in the way used in the code, you should not new it up every time your function executes, this client should be static in nature. Refer Manage connections in Azure Functions
to do that i made a web service to send push (by referencing PushSharp library). I request web service through my web application. i retrieve list of device token from database(using web application) send to web service using for loop to send push. and get result/exception for each one. This process is very slow and take long long time to send notification. If anybody suggest me to what should i do i will be grateful to you.
public ActionResult SendNowToken(int certificateInfoId, string message, string certificate, int badgeNo, int pushtype, string password, string countryJsonString)
{
if (IsPushParameterValid(certificateInfoId, message, certificate, badgeNo, pushtype, password, countryJsonString))
{
var countryObject = new JavaScriptSerializer().Deserialize<Country>(countryJsonString);
var errorList = new List<ErrorList>();
byte[] certificatePath = System.IO.File.ReadAllBytes(HttpContext.Server.MapPath("~/Content/certificate/" + certificate));
foreach (var aDeviceToken in countryObject.DeviceTokens)
{
try
{
var serviceClient = new PushServiceSoapClient();
string serviceResult = serviceClient.SendPushNotification(message, badgeNo, pushtype, aDeviceToken.Token, certificatePath, password);
if (serviceResult != "Sent Notification")
{
var delimiters = new[] { ' ' };
string[] errorResult = serviceResult.Split(delimiters, StringSplitOptions.RemoveEmptyEntries);
string errorMessage = ConvertErrorCodeToErrorMessage(errorResult[0]);
var error = new ErrorList
{
CountryName = countryObject.CountryName,
ErrorTime = DateTime.Now,
ErrorMessage = errorMessage,
Token = aDeviceToken.Token
};
errorList.Add(error);
}
}
catch (Exception ex)
{
var error = new ErrorList
{
CountryName = countryObject.CountryName,
ErrorTime = DateTime.Now,
ErrorMessage = ex.Message,
Token = aDeviceToken.Token
};
errorList.Add(error);
}
}
if (errorList.Count != 0)
{
ViewBag.Message = "Push Notification does not send to country... ";
return PartialView("_SendAllError", errorList.ToList());
}
errorList.Clear();
}
return View();
}
I am creating a universal Windows Phone 8.1 App. I am trying to download the file and view it into launcher. I works for small file less than 15 MB files. But when file size is more than 15 MB, I got the out of memory exception.
async private Task<object> GetMailAttachments(string attachNotify)
{
try
{
cmdBarMailItem.IsEnabled = false;
if (await Device.IsNetworkAvailable())
{
cts = new CancellationTokenSource();
// Ignore SSL Certificate which is untrusted,expired and has invalid hostname.
var filter = new HttpBaseProtocolFilter() { AllowUI = false };
filter.IgnorableServerCertificateErrors.Add(Windows.Security.Cryptography.Certificates.ChainValidationResult.Untrusted);
filter.IgnorableServerCertificateErrors.Add(Windows.Security.Cryptography.Certificates.ChainValidationResult.Expired);
filter.IgnorableServerCertificateErrors.Add(Windows.Security.Cryptography.Certificates.ChainValidationResult.InvalidName);
// Start calling the soap service #userGetAttachmentByIndex
using (var client = new System.Net.Http.HttpClient(new WinRtHttpClientHandler(filter)))
{
//Prepare parameters which is to be post via soap envelope.
List<KeyValuePair<string, string>> parameter = new List<KeyValuePair<string, string>>();
parameter.Add(new KeyValuePair<string, string>("sessionId", GlobalInfo.SessionID));
parameter.Add(new KeyValuePair<string, string>("attachmentIndex", attachNotify.Split('|')[1].ToString()));
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("text/xml"));
client.DefaultRequestHeaders.Add("SOAPAction", "userGetAttachmentByIndex");
var postContent = new StringContent(StringHelper.ConstructSoapRequest(parameter, "userGetAttachmentByIndex"), Encoding.UTF8, "text/xml");
// Getting response from soap service
var response = await client.PostAsync(new Uri(AppEnv.ServiceEndPoint), postContent, cts.Token);
if (response.StatusCode == System.Net.HttpStatusCode.OK)
{
string soapResponse = await response.Content.ReadAsStringAsync();
var soap = XDocument.Parse(soapResponse);
XNamespace ns = "http://service.webservice.cryoserver.ci";
var base64BinaryStr = soap.Descendants(ns + "userGetAttachmentByIndexResponse").First().Descendants(ns + "return").First().Descendants(ns + "attachmentType").First().Descendants(ns + "binaryData").First().Descendants(ns + "base64Binary").First().Value;
await saveStringToLocalFile(base64BinaryStr);
var file = await Windows.Storage.ApplicationData.Current.LocalFolder.GetFileAsync("myTest.pdf");
bool x = await Windows.System.Launcher.LaunchFileAsync(file);
return x;
}
}
}
cmdBarMailItem.IsEnabled = true;
}
catch (TaskCanceledException)
{
PopupRetrieve.IsOpen = false;
ProgressBar.IsVisible = false;
cmdBarMailItem.IsEnabled = true;
}
catch(Exception ex)
{
cmdBarMailItem.IsEnabled = true;
ProgressBar.IsVisible = false;
MessageBox.Show(AlertType.Connectivity);
}
return null;
}
async Task saveStringToLocalFile(string content)
{
try
{
// saves the string 'content' to a file 'filename' in the app's local storage folder
// byte[] fileBytes = System.Text.Encoding.UTF8.GetBytes(content.ToCharArray());
byte[] byteArray = Convert.FromBase64String(content);
// create a file with the given filename in the local folder; replace any existing file with the same name
StorageFile file = await Windows.Storage.ApplicationData.Current.LocalFolder.CreateFileAsync("myTest.pdf", CreationCollisionOption.ReplaceExisting);
// write the char array created from the content string into the file
using (var stream = await file.OpenStreamForWriteAsync())
{
stream.Write(byteArray, 0, byteArray.Length);
stream.Flush();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
I got the exception on executing the line
string soapResponse = await response.Content.ReadAsStringAsync();
Anybody have an idea why the exception occurs ? What could be possible solution to fix it.
Any help would be appriciable. :)