i am trying to create a messaging app using xamarin.forms. i created a send button and added the following code:
private async void send_Clicked(object sender, EventArgs e)
{
await Task.Run(() => SendNotification(token, "title", message.Text));
}
and the sendnotification is as follows:
public string SendNotification(string DeviceToken, string title, string msg)
{
var result = "-1";
var httpWebRequest = (HttpWebRequest)WebRequest.Create(webAddr);
httpWebRequest.ContentType = "application/json";
httpWebRequest.Headers.Add(string.Format("Authorization: key={0}", serverKey));
httpWebRequest.Headers.Add(string.Format("Sender: id={0}", senderId));
httpWebRequest.Method = "POST";
var payload = new
{
//to= "/topics/klm",
to = DeviceToken,
//to = "egjLx6VdFS0:APA91bGQMSSRq_wCzywNC01zJi4FBtHXrXuL-p4vlkl3a3esdH8lxo7mQZUBlrTi7h-6JXx0GrJbwc9Vx6M5Q4OV_3CArcdlP0XMBybervQvfraWvqCgaa75gu9SVzjY4V_qd36JGg4A",
priority = "high",
content_available = true,
data = new
{
text = msg,
},
};
var serializer = new JsonSerializer();
using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
string json = JsonConvert.SerializeObject(payload);
streamWriter.Write(json);
streamWriter.Flush();
}
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
result = streamReader.ReadToEnd();
}
return result;
}
this is private string webAddr = "https://fcm.googleapis.com/fcm/send";
when i click send the first time, i receive the message perfectly, when i hit send the second time, the app freezes then crashes and asks me if i want to close the app or wait. why is this happening? thanks in advance
I have an ASP.NET Core app project, SQL Server in the backend and React as the frontend.
When I pass the parameters (must be 1 or 0) to SetGameResults method through Swagger UI (browser) the database accepts the parameters and the table is filled.
But when I pass the parameters through the React client-side to ASP.NET, I get this error:
Inner Exception: Procedure or function 'Set_Game_Result' expects parameter '#user1_res', which was not supplied.
Controller.cs:
[HttpPost]
[Route("SetGameResults")]
public string SetGameResults(byte? user1, byte? user2)
{
if (!(user1 >= 1 && user2 >= 1)) // it passes this condition -
{
DataTable table = new DataTable();
string sqlDataSource = _configuration.GetConnectionString("tictaktoedb1");
SqlDataReader myReader;
try
{
using (SqlConnection myCon = new SqlConnection(sqlDataSource))
{
myCon.Open();
using (SqlCommand myCommand = new SqlCommand("Set_Game_Result", myCon))
{
myCommand.CommandType = CommandType.StoredProcedure;
myCommand.Parameters.AddWithValue("#user1_res", user1);
myCommand.Parameters.AddWithValue("#user2_res", user2);
myReader = myCommand.ExecuteReader();
table.Load(myReader);
myReader.Close();
if (table.Rows.Count > 0)
{
var JsonResoltString = JsonConvert.SerializeObject(table);
return JsonResoltString;
}
return "No data sent and table returned empty";
}
}
}
catch (SqlException ex)
{
return "Inner Exception: " + ex.Message;
}
catch (Exception ex)
{
return $"Outer Exception: " + ex.Message;
}
}
return "No data sent";
}
React Native
let data= {
us1: gameResult.us1Win,
us2: gameResult.us2Win,
};
const fetchResponse = await fetch(URL, {
body: JSON.stringify(data),
method: 'POST',
headers: {
Accept: 'application/json',
'Content-type': 'application/json; charset=UTF-8',
},
});
const data = await fetchResponse.json();
Be glad for some explanations about that, thanks.
I get 400 on code but Postman returns 200 for the same request. I couldn't find the source of the problem. I take the json in the code and paste it into Postman and it works.
Do you have any solution suggestions for this? Could there be a place I missed?
MY codes:
public async Task<TokenResponse> GetAccessToken()
{
try
{
var credential = new CredentialInfos
{
ssl_merchant_id = "0026031",
ssl_pin = "IEWYZSNWRTQQLEPAXXL3UXUPNAXSX7KCLBOPCWUKNZG1QLQD3QIG4II6OUQWZ88C",
ssl_user_id = "apiuser287390",
ssl_transaction_type = "ccsale",
ssl_invoice_number = "5550",
ssl_vendor_id = "sc963003",
ssl_amount = "10"
};
if (credential != null)
{
var request = new RequestBase()
{
Url = $"https://api.demo.convergepay.com/hosted-payments/transaction_token",
HttpMethod = HttpMethod.Post,
Data = credential
};
var httpResponse = await _httpHandler.ProcessRequest(request);
if (httpResponse.IsSuccessful && httpResponse.StatusCode == HttpStatusCode.OK)
{
var response = JsonSerializer.Deserialize<TokenResponse>(httpResponse.Data);
if (response.expiresInSec > 0)
{
return await Task.FromResult(response);
}
}
throw new Exception("Error!");
}
}
catch (Exception)
{
return await Task.FromResult(new TokenResponse());
}
throw new Exception("Error");
}
And this
public async Task<ResponseBase> ProcessRequest(RequestBase request)
{
HttpResponseMessage httpResponse;
string responseText;
try
{
var jsonData = JsonSerializer.Serialize(request.Data);
var httpRequestMessage = new HttpRequestMessage(request.HttpMethod, request.Url);
httpRequestMessage.Content = request.Data != null ? new StringContent(jsonData, Encoding.UTF8, "application/json") : null;
httpRequestMessage.Headers.Authorization = request.Authorization ?? null;
if (request.HeaderParameters != null)
{
foreach (KeyValuePair<string, string> parameter in request.HeaderParameters)
{
httpRequestMessage.Headers.Add(parameter.Key, parameter.Value);
}
}
httpResponse = await _httpClient.SendAsync(httpRequestMessage);
responseText = await httpResponse.Content.ReadAsStringAsync();
}
catch (Exception ex)
{
return await Task.FromResult(new ResponseBase() { Data = string.Empty, StatusCode = HttpStatusCode.InternalServerError, IsSuccessful = false, ExceptionMessage = ex?.Message });
}
var result = new ResponseBase() { Data = responseText, StatusCode = httpResponse.StatusCode, IsSuccessful = true };
return await Task.FromResult(result);
}
Postman Input and Outputs
I am using this code to send notification message by C# with GCM, using Winforms, Webforms, whatever. Now I want to send to FCM (Firebase Cloud Messaging). Should I update my code? :
public class AndroidGCMPushNotification
{
public AndroidGCMPushNotification()
{
//
// TODO: Add constructor logic here
//
}
public string SendNotification(string deviceId, string message)
{
string SERVER_API_KEY = "server api key";
var SENDER_ID = "application number";
var value = message;
WebRequest tRequest;
tRequest = WebRequest.Create("https://android.googleapis.com/gcm/send");
tRequest.Method = "post";
tRequest.ContentType = " application/x-www-form-urlencoded;charset=UTF-8";
tRequest.Headers.Add(string.Format("Authorization: key={0}", SERVER_API_KEY));
tRequest.Headers.Add(string.Format("Sender: id={0}", SENDER_ID));
string postData = "collapse_key=score_update&time_to_live=108&delay_while_idle=1&data.message=" + value + "&data.time=" + System.DateTime.Now.ToString() + "®istration_id=" + deviceId + "";
Console.WriteLine(postData);
Byte[] byteArray = Encoding.UTF8.GetBytes(postData);
tRequest.ContentLength = byteArray.Length;
Stream dataStream = tRequest.GetRequestStream();
dataStream.Write(byteArray, 0, byteArray.Length);
dataStream.Close();
WebResponse tResponse = tRequest.GetResponse();
dataStream = tResponse.GetResponseStream();
StreamReader tReader = new StreamReader(dataStream);
String sResponseFromServer = tReader.ReadToEnd();
tReader.Close();
dataStream.Close();
tResponse.Close();
return sResponseFromServer;
}
}
but the GCM was changed to FCM. Is this same code to send the notification?
Where can I find the SERVER_API_KEY? Is the same solution?
firebase cloud messaging with c#:
working all .net platform (asp.net, .netmvc, .netcore)
WebRequest tRequest = WebRequest.Create("https://fcm.googleapis.com/fcm/send");
tRequest.Method = "post";
//serverKey - Key from Firebase cloud messaging server
tRequest.Headers.Add(string.Format("Authorization: key={0}", "AIXXXXXX...."));
//Sender Id - From firebase project setting
tRequest.Headers.Add(string.Format("Sender: id={0}", "XXXXX.."));
tRequest.ContentType = "application/json";
var payload = new
{
to = "e8EHtMwqsZY:APA91bFUktufXdsDLdXXXXXX..........XXXXXXXXXXXXXX",
priority = "high",
content_available = true,
notification = new
{
body = "Test",
title = "Test",
badge = 1
},
data = new
{
key1 = "value1",
key2 = "value2"
}
};
string postbody = JsonConvert.SerializeObject(payload).ToString();
Byte[] byteArray = Encoding.UTF8.GetBytes(postbody);
tRequest.ContentLength = byteArray.Length;
using (Stream dataStream = tRequest.GetRequestStream())
{
dataStream.Write(byteArray, 0, byteArray.Length);
using (WebResponse tResponse = tRequest.GetResponse())
{
using (Stream dataStreamResponse = tResponse.GetResponseStream())
{
if (dataStreamResponse != null) using (StreamReader tReader = new StreamReader(dataStreamResponse))
{
String sResponseFromServer = tReader.ReadToEnd();
//result.Response = sResponseFromServer;
}
}
}
}
Here is another approach of writing Notification Service inside ASP.Net REST API.
public async Task<bool> NotifyAsync(string to, string title, string body)
{
try
{
// Get the server key from FCM console
var serverKey = string.Format("key={0}", "Your server key - use app config");
// Get the sender id from FCM console
var senderId = string.Format("id={0}", "Your sender id - use app config");
var data = new
{
to, // Recipient device token
notification = new { title, body }
};
// Using Newtonsoft.Json
var jsonBody = JsonConvert.SerializeObject(data);
using (var httpRequest = new HttpRequestMessage(HttpMethod.Post, "https://fcm.googleapis.com/fcm/send"))
{
httpRequest.Headers.TryAddWithoutValidation("Authorization", serverKey);
httpRequest.Headers.TryAddWithoutValidation("Sender", senderId);
httpRequest.Content = new StringContent(jsonBody, Encoding.UTF8, "application/json");
using (var httpClient = new HttpClient())
{
var result = await httpClient.SendAsync(httpRequest);
if (result.IsSuccessStatusCode)
{
return true;
}
else
{
// Use result.StatusCode to handle failure
// Your custom error handler here
_logger.LogError($"Error sending notification. Status Code: {result.StatusCode}");
}
}
}
}
catch (Exception ex)
{
_logger.LogError($"Exception thrown in Notify Service: {ex}");
}
return false;
}
References:
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
I have posted this answer as this question was viewed most and this server side code was written in VS 2015 in C# for sending push notification either single device based on device id or subscribed topic to Xamarin Android app
public class FCMPushNotification
{
public FCMPushNotification()
{
// TODO: Add constructor logic here
}
public bool Successful
{
get;
set;
}
public string Response
{
get;
set;
}
public Exception Error
{
get;
set;
}
public FCMPushNotification SendNotification(string _title, string _message, string _topic)
{
FCMPushNotification result = new FCMPushNotification();
try
{
result.Successful = true;
result.Error = null;
// var value = message;
var requestUri = "https://fcm.googleapis.com/fcm/send";
WebRequest webRequest = WebRequest.Create(requestUri);
webRequest.Method = "POST";
webRequest.Headers.Add(string.Format("Authorization: key={0}", YOUR_FCM_SERVER_API_KEY));
webRequest.Headers.Add(string.Format("Sender: id={0}", YOUR_FCM_SENDER_ID));
webRequest.ContentType = "application/json";
var data = new
{
// to = YOUR_FCM_DEVICE_ID, // Uncoment this if you want to test for single device
to="/topics/"+_topic, // this is for topic
notification=new
{
title=_title,
body=_message,
//icon="myicon"
}
};
var serializer = new JavaScriptSerializer();
var json = serializer.Serialize(data);
Byte[] byteArray = Encoding.UTF8.GetBytes(json);
webRequest.ContentLength = byteArray.Length;
using (Stream dataStream = webRequest.GetRequestStream())
{
dataStream.Write(byteArray, 0, byteArray.Length);
using (WebResponse webResponse = webRequest.GetResponse())
{
using (Stream dataStreamResponse = webResponse.GetResponseStream())
{
using (StreamReader tReader = new StreamReader(dataStreamResponse))
{
String sResponseFromServer = tReader.ReadToEnd();
result.Response = sResponseFromServer;
}
}
}
}
}
catch(Exception ex)
{
result.Successful = false;
result.Response = null;
result.Error = ex;
}
return result;
}
}
and its uses
// start sending push notification to apps
FCMPushNotification fcmPush = new FCMPushNotification();
fcmPush.SendNotification("your notificatin title", "Your body message","news");
// end push notification
Yes, you should update your code to use Firebase Messaging interface.
There's a GitHub Project for that here.
using Stimulsoft.Base.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web;
namespace _WEBAPP
{
public class FireBasePush
{
private string FireBase_URL = "https://fcm.googleapis.com/fcm/send";
private string key_server;
public FireBasePush(String Key_Server)
{
this.key_server = Key_Server;
}
public dynamic SendPush(PushMessage message)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(FireBase_URL);
request.Method = "POST";
request.Headers.Add("Authorization", "key=" + this.key_server);
request.ContentType = "application/json";
string json = JsonConvert.SerializeObject(message);
//json = json.Replace("content_available", "content-available");
byte[] byteArray = Encoding.UTF8.GetBytes(json);
request.ContentLength = byteArray.Length;
Stream dataStream = request.GetRequestStream();
dataStream.Write(byteArray, 0, byteArray.Length);
dataStream.Close();
HttpWebResponse respuesta = (HttpWebResponse)request.GetResponse();
if (respuesta.StatusCode == HttpStatusCode.Accepted || respuesta.StatusCode == HttpStatusCode.OK || respuesta.StatusCode == HttpStatusCode.Created)
{
StreamReader read = new StreamReader(respuesta.GetResponseStream());
String result = read.ReadToEnd();
read.Close();
respuesta.Close();
dynamic stuff = JsonConvert.DeserializeObject(result);
return stuff;
}
else
{
throw new Exception("Ocurrio un error al obtener la respuesta del servidor: " + respuesta.StatusCode);
}
}
}
public class PushMessage
{
private string _to;
private PushMessageData _notification;
private dynamic _data;
private dynamic _click_action;
public dynamic data
{
get { return _data; }
set { _data = value; }
}
public string to
{
get { return _to; }
set { _to = value; }
}
public PushMessageData notification
{
get { return _notification; }
set { _notification = value; }
}
public dynamic click_action
{
get
{
return _click_action;
}
set
{
_click_action = value;
}
}
}
public class PushMessageData
{
private string _title;
private string _text;
private string _sound = "default";
//private dynamic _content_available;
private string _click_action;
public string sound
{
get { return _sound; }
set { _sound = value; }
}
public string title
{
get { return _title; }
set { _title = value; }
}
public string text
{
get { return _text; }
set { _text = value; }
}
public string click_action
{
get
{
return _click_action;
}
set
{
_click_action = value;
}
}
}
}
Based on Teste's code .. I can confirm the following works. I can't say whether or not this is "good" code, but it certainly works and could get you back up and running quickly if you ended up with GCM to FCM server problems!
public AndroidFCMPushNotificationStatus SendNotification(string serverApiKey, string senderId, string deviceId, string message)
{
AndroidFCMPushNotificationStatus result = new AndroidFCMPushNotificationStatus();
try
{
result.Successful = false;
result.Error = null;
var value = message;
WebRequest tRequest = WebRequest.Create("https://fcm.googleapis.com/fcm/send");
tRequest.Method = "post";
tRequest.ContentType = "application/x-www-form-urlencoded;charset=UTF-8";
tRequest.Headers.Add(string.Format("Authorization: key={0}", serverApiKey));
tRequest.Headers.Add(string.Format("Sender: id={0}", senderId));
string postData = "collapse_key=score_update&time_to_live=108&delay_while_idle=1&data.message=" + value + "&data.time=" + System.DateTime.Now.ToString() + "®istration_id=" + deviceId + "";
Byte[] byteArray = Encoding.UTF8.GetBytes(postData);
tRequest.ContentLength = byteArray.Length;
using (Stream dataStream = tRequest.GetRequestStream())
{
dataStream.Write(byteArray, 0, byteArray.Length);
using (WebResponse tResponse = tRequest.GetResponse())
{
using (Stream dataStreamResponse = tResponse.GetResponseStream())
{
using (StreamReader tReader = new StreamReader(dataStreamResponse))
{
String sResponseFromServer = tReader.ReadToEnd();
result.Response = sResponseFromServer;
}
}
}
}
}
catch (Exception ex)
{
result.Successful = false;
result.Response = null;
result.Error = ex;
}
return result;
}
public class AndroidFCMPushNotificationStatus
{
public bool Successful
{
get;
set;
}
public string Response
{
get;
set;
}
public Exception Error
{
get;
set;
}
}
You need change url from https://android.googleapis.com/gcm/send to https://fcm.googleapis.com/fcm/send and change your app library too. this tutorial can help you https://firebase.google.com/docs/cloud-messaging/server#implementing-http-connection-server-protocol
Try to send a json object.
Replace this:
tRequest.ContentType = " application/x-www-form-urlencoded;charset=UTF-8";
string postData = "collapse_key=score_update&time_to_live=108&delay_while_idle=1&data.message=" + value + "&data.time=" + System.DateTime.Now.ToString() + "®istration_id=" + deviceId + "";
Console.WriteLine(postData);
Byte[] byteArray = Encoding.UTF8.GetBytes(postData);
For this:
tRequest.ContentType = "application/json";
var data = new
{
to = deviceId,
notification = new
{
body = "This is the message",
title = "This is the title",
icon = "myicon"
}
};
var serializer = new JavaScriptSerializer();
var json = serializer.Serialize(data);
Byte[] byteArray = Encoding.UTF8.GetBytes(json);
Here's the code for server side firebase cloud request from C# / Asp.net.
Please note that your client side should have same topic.
e.g.
FirebaseMessaging.getInstance().subscribeToTopic("news");
public String SendNotificationFromFirebaseCloud()
{
var result = "-1";
var webAddr = "https://fcm.googleapis.com/fcm/send";
var httpWebRequest = (HttpWebRequest)WebRequest.Create(webAddr);
httpWebRequest.ContentType = "application/json";
httpWebRequest.Headers.Add("Authorization:key=" + YOUR_FIREBASE_SERVER_KEY);
httpWebRequest.Method = "POST";
using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
string json = "{\"to\": \"/topics/news\",\"data\": {\"message\": \"This is a Firebase Cloud Messaging Topic Message!\",}}";
streamWriter.Write(json);
streamWriter.Flush();
}
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
result = streamReader.ReadToEnd();
}
return result;
}
You can use this library, makes it seamless to send push notifications using Firebase Service from a C# backend download here
public SendNotice(int deviceType, string deviceToken, string message, int badge, int status, string sound)
{
AndroidFCMPushNotificationStatus result = new AndroidFCMPushNotificationStatus();
try
{
result.Successful = false;
result.Error = null;
var value = message;
WebRequest tRequest = WebRequest.Create("https://fcm.googleapis.com/fcm/send");
tRequest.Method = "post";
tRequest.ContentType = "application/json";
var serializer = new JavaScriptSerializer();
var json = "";
tRequest.Headers.Add(string.Format("Authorization: key={0}", "AA******"));
tRequest.Headers.Add(string.Format("Sender: id={0}", "11********"));
if (DeviceType == 2)
{
var body = new
{
to = deviceToken,
data = new
{
custom_notification = new
{
title = "Notification",
body = message,
sound = "default",
priority = "high",
show_in_foreground = true,
targetScreen = notificationType,//"detail",
},
},
priority = 10
};
json = serializer.Serialize(body);
}
else
{
var body = new
{
to = deviceToken,
content_available = true,
notification = new
{
title = "Notification",
body = message,
sound = "default",
show_in_foreground = true,
},
data = new
{
targetScreen = notificationType,
id = 0,
},
priority = 10
};
json = serializer.Serialize(body);
}
Byte[] byteArray = Encoding.UTF8.GetBytes(json);
tRequest.ContentLength = byteArray.Length;
using (Stream dataStream = tRequest.GetRequestStream())
{
dataStream.Write(byteArray, 0, byteArray.Length);
using (WebResponse tResponse = tRequest.GetResponse())
{
using (Stream dataStreamResponse = tResponse.GetResponseStream())
{
using (StreamReader tReader = new StreamReader(dataStreamResponse))
{
String sResponseFromServer = tReader.ReadToEnd();
result.Response = sResponseFromServer;
}
}
}
}
}
catch (Exception ex)
{
result.Successful = false;
result.Response = null;
result.Error = ex;
}
}
I write this code and It's worked for me .
public static string ExcutePushNotification(string title, string msg, string fcmToken, object data)
{
var serverKey = "AAAA*******************";
var senderId = "3333333333333";
var result = "-1";
var httpWebRequest = (HttpWebRequest)WebRequest.Create("https://fcm.googleapis.com/fcm/send");
httpWebRequest.ContentType = "application/json";
httpWebRequest.Headers.Add(string.Format("Authorization: key={0}", serverKey));
httpWebRequest.Headers.Add(string.Format("Sender: id={0}", senderId));
httpWebRequest.Method = "POST";
var payload = new
{
notification = new
{
title = title,
body = msg,
sound = "default"
},
data = new
{
info = data
},
to = fcmToken,
priority = "high",
content_available = true,
};
var serializer = new JavaScriptSerializer();
using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
string json = serializer.Serialize(payload);
streamWriter.Write(json);
streamWriter.Flush();
}
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
result = streamReader.ReadToEnd();
}
return result;
}
I am using this approach and it is working fine:
public class PushNotification
{
private static readonly ILog Logger = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
// firebase
private static Uri FireBasePushNotificationsURL = new Uri("https://fcm.googleapis.com/fcm/send");
private static string ServerKey = ConfigurationManager.AppSettings["FIREBASESERVERKEY"];
public static async Task<bool> SendPushNotification(List<SendNotificationModel> notificationData)
{
try
{
bool sent = false;
foreach (var data in notificationData)
{
var messageInformation = new Message()
{
notification = new Notification()
{
title = data.Title,
text = data.Message,
ClickAction = "FCM_PLUGIN_ACTIVITY"
},
data = data.data,
priority="high",
to =data.DeviceId
};
string jsonMessage = JsonConvert.SerializeObject(messageInformation);
//Create request to Firebase API
var request = new HttpRequestMessage(HttpMethod.Post, FireBasePushNotificationsURL);
request.Headers.TryAddWithoutValidation("Authorization", "key=" + ServerKey);
request.Content = new StringContent(jsonMessage, Encoding.UTF8, "application/json");
HttpResponseMessage result;
using (var client = new HttpClient())
{
result = await client.SendAsync(request);
sent = result.IsSuccessStatusCode;
}
}
return sent;
}
catch(Exception ex)
{
Logger.Error(ex);
return false;
}
}
}
Following Approach, I have used for writing Firebase Notification Service inside ASP.Net REST API.
public async Task<bool> NotifyAsync(string to, string title, string body)
{
try
{
//Server key from FCM console
var serverKey = string.Format("key={0}", "Provide your Server key here from Fibase console");
//Sender id from FCM console
var senderId = string.Format("id={0}", "Provide your Sender Id here from Firebase Console");
var data = new
{
to, // Recipient device token
notification = new { title, body }
};
// Using Newtonsoft.Json
var jsonBody = JsonConvert.SerializeObject(data);
using (var httpRequest = new HttpRequestMessage(HttpMethod.Post, "https://fcm.googleapis.com/fcm/send"))
{
httpRequest.Headers.TryAddWithoutValidation("Authorization", serverKey);
httpRequest.Headers.TryAddWithoutValidation("Sender", senderId);
httpRequest.Content = new StringContent(jsonBody, Encoding.UTF8, "application/json");
using (var httpClient = new HttpClient())
{
var result = await httpClient.SendAsync(httpRequest);
if (result.IsSuccessStatusCode)
{
return true;
}
else
{
// Use result.StatusCode to handle failure
// Your custom error handler here
return false;
}
}
}
}
catch (Exception ex)
{
throw ex;
}
return false;
}
Refer This blog for send Group Notification
https://firebase.google.com/docs/cloud-messaging/android/send-multiple
public ActionResult Index(PublishPost post, HttpPostedFileBase file)
{
var apiURL = "http://test.sa.com/rest/social/update/1161/upload?access_token=6fWV564kj3drlu7rATh8="
WebClient webClient = new WebClient();
byte[] responseBinary = webClient.UploadFile(apiUrl, file.FileName);
string response = Encoding.UTF8.GetString(responseBinary);
/* Giving error here. How to proceed?
}
I want to upload a single file to this url and the response is shown in the figure above. How to proceed further with the same in C#? Please help
Try your code like below.
public ActionResult Index(PublishPost post, HttpPostedFileBase file)
{
var apiURL = "http://test.sa.com/rest/social/update/1161/upload?access_token=6fWV564kj3drlu7rATh8="
using (HttpClient client = new HttpClient())
{
using (var content = new MultipartFormDataContent())
{
byte[] fileBytes = new byte[file.InputStream.Length + 1];
file.InputStream.Read(fileBytes, 0, fileBytes.Length);
var fileContent = new ByteArrayContent(fileBytes);
fileContent.Headers.ContentDisposition = new System.Net.Http.Headers.ContentDispositionHeaderValue("attachment") { FileName = file.FileName };
content.Add(fileContent);
var result = client.PostAsync(apiURL, content).Result;
if (result.StatusCode == System.Net.HttpStatusCode.OK)
{
return new
{
code = result.StatusCode,
message = "Successful",
data = new
{
success = true,
filename = file.FileName
}
};
}
else
{
return new
{
code = result.StatusCode,
message = "Error"
};
}
}
}
}