I'm trying to post a json Object to a web api project from a windows phone app but I'm still getting 404 error. For the post method, I'm using that code:
Mail mailToCheck = new Mail();
try
{
mailToCheck.MailProfil = TxtBox_mail.Text.ToString();
string json = JsonConvert.SerializeObject(mailToCheck);
var httpClient = new System.Net.Http.HttpClient(new HttpClientHandler());
System.Net.Http.HttpResponseMessage response = await httpClient.PostAsync(new Uri("http://uri/api/Profil/CheckMail"), new StringContent(json));
var responseString = await response.Content.ReadAsStringAsync();
}
catch (Exception ex)
{
MessageBox.Show(ex.HResult.ToString());
}
The method CheckMail on my conctroller:
[HttpPost]
[Route("api/Profil/CheckMail")]
public IHttpActionResult CheckMail([FromBody]Mail MailProfil)
{
if (MailProfil.MailProfil != null)
{
try
{
bool exists = Librairie.Profils.mailExists(MailProfil.MailProfil);
return Ok(exists);
}
catch(Exception ex)
{
return InternalServerError(ex);
}
}
else
{
return BadRequest();
}
}
The Mail object is exactly the same in the app as in the web api project. Does someone can tell me what I'm doing wrong here ?
Check some samples of HttpClient.PostAsync() here: https://monkeyweekend.wordpress.com/2014/10/23/how-to-send-text-json-or-files-using-httpclient-postasync/
Related
How can I persist user session between user usages of the application (closed browser/tab without logout)?
Can a Blazor WebAssembly app persist the user session in a cookie with some expiration date?
Right now I got this startup configuration, and everything related to authorization with IdentityServer works fine. The tokens in Identity Server have a 30 days expiration period.
// startup.cs
builder.Services.AddOidcAuthentication(options =>
{
builder.Configuration.Bind("Local", options.ProviderOptions);
options.UserOptions.RoleClaim = "RoleName";
});
// appsettings.json
"Local": {
"Authority": "https://idserver.url",
"ClientId": "Client",
"DefaultScopes": [
"openid",
"profile",
"email",
"roles",
"offline_access"
],
"ResponseType": "code",
"PostLogoutRedirectUri": "https://localhost:5004/authentication/logout-callback",
"RedirectUri": "https://localhost:5004/authentication/login-callback"
}
Is there a way to persist user session in cookies?
I will try my best to answer your question, because I had the same issue and figured it out.
So essentially in between sessions, the cookie is still there saved in the browser, and even though your AuthenticationStateProvider is not set to authenticated, if you try and execute a call against your API, the Cookie Handler will include the cookie in the request and it will authenticate.
So I was able to implement a solution based off an article that I found here:
https://www.learmoreseekmore.com/2022/04/blazorwasm-cookie-series-part-1-blazor-webassembly-cookie-authentication.html
I assume that you have a delegation handler that attaches the cookie to outgoing HTTP requests like so:
public class CookieHandler : DelegatingHandler
{
protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
request.SetBrowserRequestCredentials(BrowserRequestCredentials.Include);
return await base.SendAsync(request, cancellationToken);
}
}
This guy will continue to attach that cookie in between sessions.
The problem is that the AuthenticationStateProvider will not persist his state. So what I did was save a local variable into the local browser storage that allows me to remember if I am authenticated. When I check if I am logged in, I make the following checks:
I check if the AutenticationStateProvider is authenticated.
If not, I check if I have set a local variable in the local storage indicating if I am authenticated. If that local variable exists, then he will make an API call to my web service asking for my user information. If that call completes successfully, then I update my AuthenticationStateProvider
I have a dependency injection service I call ILoginService that has an implementation that looks a bit like so:
ILocalStorageService _storageService;
AuthenticationStateProvider _authStateProvider;
public UserModel User { get; private set; } = new UserModel();
public LoginService(ILocalStorageService storageService, IHttpClientFactory clientFactory, AuthenticationStateProvider authStateProvider) : base(clientFactory)
{
_authStateProvider = authStateProvider;
_storageService = storageService;
}
public async Task<bool> IsLoggedIn()
{
var authState = await _authStateProvider.GetAuthenticationStateAsync();
if (authState.User?.Identity?.IsAuthenticated == true)
{
return true;
}
var isauthenticated = await _storageService.GetItemAsync<string>("isauthenticated");
if (!string.IsNullOrWhiteSpace(isauthenticated))
{
using (var client = _clientFactory.CreateClient("API"))
{
var response = await client.GetAsync("/login");
if (response.IsSuccessStatusCode)
{
string jsonStr = await response.Content.ReadAsStringAsync();
UserModel? user = JsonConvert.DeserializeObject<UserModel>(jsonStr);
if (user == null)
{
await _storageService.RemoveItemAsync("isauthenticated");
return false;
}
else
{
(_authStateProvider as CustomAuthStateProvider)?.SetAuthInfo(user);
this.User = user;
return true;
}
}
}
}
await _storageService.RemoveItemAsync("isauthenticated");
return false;
}
public async Task<bool> Login(LoginCredentials credentials)
{
try
{
if (credentials == null) throw new ArgumentNullException(nameof(credentials));
using (var client = _clientFactory.CreateClient("API"))
{
StringContent body = new StringContent(JsonConvert.SerializeObject(credentials), System.Text.Encoding.UTF8, "application/json");
var response = await client.PostAsync("/login", body);
if (response.IsSuccessStatusCode)
{
string jsonStr = await response.Content.ReadAsStringAsync();
UserModel? user = JsonConvert.DeserializeObject<UserModel>(jsonStr);
if (user == null)
{
await _storageService.RemoveItemAsync("isauthenticated");
return false;
}
else
{
(_authStateProvider as CustomAuthStateProvider)?.SetAuthInfo(user);
this.User = user;
await _storageService.SetItemAsync<string>("isauthenticated", "true");
return true;
}
}
else
{
#if DEBUG
string responseStr = await response.Content.ReadAsStringAsync();
#endif
await _storageService.RemoveItemAsync("isauthenticated");
return false;
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex);
await _storageService.RemoveItemAsync("isauthenticated");
return false;
}
}
public async Task<bool> Logout()
{
try
{
using (var client = _clientFactory.CreateClient("API"))
{
var response = await client.DeleteAsync("/login");
if (!response.IsSuccessStatusCode)
{
#if DEBUG
string responseStr = await response.Content.ReadAsStringAsync();
#endif
}
}
(_authStateProvider as CustomAuthStateProvider)?.ClearAuthInfo();
await _storageService.RemoveItemAsync("isauthenticated");
return true;
}
catch (Exception ex)
{
Console.WriteLine(ex);
return false;
}
}
I hope this helps you fix your problem and anybody else that comes along.
my question is how to pass username and password from the C# client(xamarin forms) to server's API? if details are correct then the client will get whole product list from webapi(URL).and bind all the details to a listview.I want to get the member details after the success of response code.
the client will send username password from login page to server's API. if server's webapi check whether the details matched with the database, if not, don't let it get product list.
here is the code in loginservices for login(xamarin forms)
public async Task GetData(string username,string password)
{
//string detail = new UserDetails();
UserDetails userDetails = new UserDetails();
// List<UserDetails> detail = new List<UserDetails>();
try
{
var values = new List<KeyValuePair<string, string>>();
values.Add(new KeyValuePair<string, string>("Username", username));
values.Add(new KeyValuePair<string, string>("Password", password));
var content = new FormUrlEncodedContent(values);
using (var client = new HttpClient())
{
client.DefaultRequestHeaders.Clear();
client.DefaultRequestHeaders.AcceptLanguage.Add(new StringWithQualityHeaderValue("nl-NL"));
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
var response = await client.PostAsync("http://192.168.1.50/Accounts/Authenticate", content);
return response.IsSuccessStatusCode;
};
}
catch (Exception ex)
{
throw ex;
}
}
here is the code for web api---
public async Task ValidateUser([FromBody] Credentials credentials)
{
using (DemoAPPEntities entities = new DemoAPPEntities())
{
var result = await entities.MemberDetails.Where(x => x.UserName == credentials.UserName && x.Password == credentials.Password).SingleOrDefaultAsync();
if (result == null)
{
return NotFound();
}
return Ok(entities.MemberDetails);
}
}
I am trying to send an XML soap request to a dynamics nav web service. This is the XML from the WSDL. I have created a web access key and its the one in the key parameter of the XML.
<s11:Envelope xmlns:s11='http://schemas.xmlsoap.org/soap/envelope/'>
<s11:Body>
<ns1:Create xmlns:ns1='urn:microsoft-dynamics-schemas/page/customerws'>
<ns1:CustomerWS>
<ns1:Key>+gn8Nu4i7iW7D/g9vCaI8HZE5IEi1NBkTBqDp5QfXe4=</ns1:Key>
<ns1:Shipping_Advice></ns1:Shipping_Advice>
<ns1:Shipment_Method_Code></ns1:Shipment_Method_Code>
<ns1:Shipping_Agent_Code></ns1:Shipping_Agent_Code>
<ns1:Shipping_Agent_Service_Code></ns1:Shipping_Agent_Service_Code>
<ns1:Shipping_Time></ns1:Shipping_Time>
<ns1:Base_Calendar_Code></ns1:Base_Calendar_Code>
<ns1:Customized_Calendar></ns1:Customized_Calendar>
<ns1:Currency_Code></ns1:Currency_Code>
<ns1:Language_Code></ns1:Language_Code>
<ns1:VAT_Registration_No></ns1:VAT_Registration_No>
</ns1:CustomerWS>
</ns1:Create>
</s11:Body>
</s11:Envelope>
And this is the code that am using to send this request:
Console.WriteLine("We have started");
string pageName = "http://hrp-dmu.uganda.hrpsolutions.co.ug:9047/DynamicsNAV80/WS/Uganda%20Management%20Institute/Page/CustomerWS";
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(pageName);
req.Method = "POST";
req.ContentType = "text/xml;charset=UTF-8";
req.ProtocolVersion = new Version(1, 1);
req.Headers.Add("SOAPAction", #"urn:microsoftdynamicsschemas/page/customerws:Create");
Console.WriteLine("After preparing request object");
string xmlRequest = GetTextFromXMLFile("E:\\tst3.xml");
Console.WriteLine("xml request : "+xmlRequest);
byte[] reqBytes = new UTF8Encoding().GetBytes(xmlRequest);
req.ContentLength = reqBytes.Length;
try
{
using (Stream reqStream = req.GetRequestStream())
{
reqStream.Write(reqBytes, 0, reqBytes.Length);
}
}
catch (Exception ex)
{
Console.WriteLine("GetRequestStreamException : " + ex.Message);
}
HttpWebResponse resp = null;
try
{
resp = (HttpWebResponse)req.GetResponse();
}
catch (Exception exc)
{
Console.WriteLine("GetResponseException : " + exc.Message);
}
string xmlResponse = null;
if (resp == null)
{
Console.WriteLine("Null response");
}
else
{
using (StreamReader sr = new StreamReader(resp.GetResponseStream()))
{
xmlResponse = sr.ReadToEnd();
}
Console.WriteLine("The response");
Console.WriteLine(xmlResponse);
}
Console.ReadKey();
when using NavUserPassword Authentication you'll need a certificate.
See here on MSDN
Cheers!
I want to get some data (title, description, image) using url to page and 'Facebook SDK for .NET' library.
I don't receive image when I use GET request:
Request implementation:
var facebookClient = new FacebookClient(GetAccessToken());
try
{
dynamic data = facebookClient.Get(url);
return new OpenGraphData
{
Id = data.og_object.id,
Title = data.og_object.title,
Description = data.og_object.description
};
}
catch (Exception e)
{
}
Is it possible to create POST request using this library?
If not please tell me another way to get this data
Request data manually
using (WebClient client = new WebClient())
{
try
{
var json =
client.UploadString(String.Format(
"https://graph.facebook.com/v2.4/?id={0}&access_token={1}", url, at), "POST");
}
catch (Exception e)
{
}
}
I am developing a small blackberry project.
Here are the step that it is supposed to be:
User clicks Speak! button. The application record speech voice. [No Problem]
When user finishes speaking, click Stop! button. Once the stop button is clicked, the speech voice will be saved on BB as an AMR file. Then, the file will be sent to web service via ksoap2. Web service will return response as a string of file name. The problem is web service return nothing and there is an error occur: JVM error 104: Uncaught NullPointerException I wonder if I placed the code on the right place, or I did something wrong with ksoap2??
here is the code for web service
namespace VoiceServer
{
/// <summary>
/// Converting AMR to WAV
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
public class Service1 : System.Web.Services.WebService
{
public string UploadFile(String receivedByte, String location, String fileName)
{
String filepath = fileName;
/*don't worry about receivedByte and location, I will work on them after the problem is solved :) */
return "Success"+filepath;
}
private void InitializeComponent()
{
}
}
}
Below is the code running on Eclipse, I'm not sure if I placed the code for sending file to web service on the right place.
public class MyAudio extends MainScreen {
private ButtonField _startRecordingButton;
private ButtonField _stopRecordingButton;
private HorizontalFieldManager _fieldManagerButtons;
private VoiceNotesRecorderThread _voiceRecorder;
private LabelField _myAudioTextField;
private DateField hourMin;
private long _initTime;
public MyAudio() {
_startRecordingButton = new ButtonField("Speak!", ButtonField.CONSUME_CLICK);
_stopRecordingButton = new ButtonField("Stop!", ButtonField.CONSUME_CLICK);
_fieldManagerButtons = new HorizontalFieldManager();
_voiceRecorder = new VoiceNotesRecorderThread(500000,"file:///store/home/user/voicefile.amr",this);
_voiceRecorder.start();
myButtonFieldChangeListener buttonFieldChangeListener = new myButtonFieldChangeListener();
_startRecordingButton.setChangeListener(buttonFieldChangeListener);
_stopRecordingButton.setChangeListener(buttonFieldChangeListener);
_fieldManagerButtons.add(_startRecordingButton);
_fieldManagerButtons.add(_stopRecordingButton);
_myAudioTextField = new LabelField(" Welcome to VoiceSMS!!!" );
add(_fieldManagerButtons);
add(_myAudioTextField);
SimpleDateFormat sdF = new SimpleDateFormat("ss");
hourMin = new DateField("", 0, sdF);
hourMin.setEditable(false);
hourMin.select(false);
_initTime = System.currentTimeMillis();
add(hourMin);
}
public void setAudioTextField(String text) {
_myAudioTextField.setText(text);
}
public void startTime() {
_initTime = System.currentTimeMillis();
hourMin.setDate(0);
}
public void updateTime() {
hourMin.setDate((System.currentTimeMillis()-_initTime));
}
class myButtonFieldChangeListener implements FieldChangeListener{
public void fieldChanged(Field field, int context) {
if(field == _startRecordingButton) {
try {
_voiceRecorder.startRecording();
} catch (IOException e) {
e.printStackTrace();
}
}else if(field == _stopRecordingButton) {
_voiceRecorder.stopRecording();
//----------Send AMR to Web Service-------------//
Object response = null;
String URL = "http://http://localhost:portnumber/Service1.asmx";
String method = "UploadFile";
String NameSpace = "http://tempuri.org/";
FileConnection fc = null;
byte [] ary = null;
try
{
fc = (FileConnection)Connector.open("file:///store/home/user/voicefile.amr",Connector.READ_WRITE);
int size = (int) fc.fileSize();
//String a = Integer.toString(size);
//Dialog.alert(a);
ary = new byte[size];
fc.openDataInputStream().read(ary);
fc.close();
}
catch (IOException e1)
{
e1.printStackTrace();
}
SoapObject client = new SoapObject(NameSpace,method);
client.addProperty("receivedByte",new SoapPrimitive(SoapEnvelope.ENC,"base64",Base64.encode(ary)));
client.addProperty("location","Test/");
client.addProperty("fileName","file:///store/home/user/voicefile.amr");
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.bodyOut = client;
HttpTransport http = new HttpTransport(URL);
try
{
http.call(method,envelope);
}
catch(InterruptedIOException io)
{
io.printStackTrace();
}
catch (IOException e)
{
System.err.println(e);
}
catch (XmlPullParserException e)
{
System.err.println(e);
}
catch(OutOfMemoryError e)
{
System.out.println(e.getMessage());
}
catch(Exception e)
{
e.printStackTrace();
}
try
{
response = envelope.getResponse();
Dialog.alert(response.toString());
}
catch (SoapFault e)
{
System.err.println(e);
System.out.println("Soap Fault");
}
catch(NullPointerException ne)
{
System.err.println(ne);
}
Dialog.alert(response.toString());
//Dialog.alert("Send Success");
//----------End of Upload-to-Web-Service--------//
}
}
}
}
I don't know if the file is not sent to web service, or web service has got the file and produce no response??? I am a real newbie for BB programming. Please let me know if I did anything wrong.
Thanks in advance!!!
There is a typo in your URL variable value.
"http://" typed twice
String URL = "http://http://localhost:portnumber/Service1.asmx";
Hooray!!! Problem Solved!
just changed URL as Rafael suggested and added [WebMethod] above "public string UploadFile" in the web service code