I want to use WebSockets to communicate between a web app and a game created in Unity.
I've created a simple chat app on both platforms and can communicate between them using an open WebSocket connection when I'm hosting the app locally.
Here's a short video of the app in action: https://gfycat.com/organicscholarlydeviltasmanian
However, when the app is hosted using Firebase Hosting, I get the error: WebSocket connection to 'wss://trainscape-app.web.app/' failed: Error during WebSocket handshake: Unexpected response code: 200
This is the line that throws the error, in a simple index.html function:
ws = new WebSocket(location.origin.replace(/^http/, 'ws'));
Does Firebase Hosting not support WebSockets in this way?
replace the line
ws = new WebSocket(location.origin.replace(/^http/, 'ws'));
with
ws = new WebSocket(location.origin.replace(/^http/, 'wss'));
build your web app and deploy again to firebase, it should work now.
Thanks
Related
I created an empty xamarin forms project and followed the path to connect to the database. I am able to connect with the right key store file but as soon as I try to create data on the server I am getting a bad grpc response.
It look like ios is calling with http 1.1, but google requiers 2.0.
This is the line that fails:
await docRef.SetAsync(user);
This is the error I am getting:
e {Grpc.Core.RpcException: Status(StatusCode="Internal", Detail="Bad gRPC response. Response protocol downgraded to HTTP/1.1.") at Google.Api.Gax.Grpc.ApiCallRetryExtensions+<>c__DisplayClass0_0`2[TRequest,TResponse].<WithRetry>b__0 (TRequest request, Google.Ap…}
I am stuck here for days now, please help.
The same code works fine on android devices, its just iOS problem in xamarin.forms.
EDIT:
I have noticed, that this issue does not exist on the firebase nuget package 3.2.1 and below. Just the higher ones throw this error.
This is how do the connection part.
componentDidMount() {
const hubUrl = "https://192.168.1.106:45455/messagingHub";
const connectionHub = new signalR.HubConnectionBuilder()
.withUrl(hubUrl)
.configureLogging(signalR.LogLevel.Information)
.build();
connectionHub.start().catch(err => console.log(err)); }
Before I post the error, It's not because of cors or anything related to the api. Api was started on my laptop and I used Conveyor by Keyoti to expose it to my local network and I installed Conveyor by Keyoti SSL certificate on my phone that shouldn't be a problem. And I was able to connect to the SignalR hub on my PC using a small console application I made and I was able to send messages and recieved them. So problem is on React Native part. About React Native I used expo cli, so it was a quick start react native.
This is the errors I get:
Http Warning
3 Errors I get
And my Package.json
We are running a simple application that connects to Firebase are reads some data. It fails to connect with the following timeout error:
#firebase/database: FIREBASE WARNING: {"code":"app/invalid-credential",
"message":"Credential implementation provided to initializeApp()
via the \"credential\" property failed to fetch a valid Google OAuth2 access token
with the following error: \"Failed to parse access token response: Error: Error
while making request: connect ETIMEDOUT
We are behind Firewall / Proxy and it appears that is blocking traffic to/from Firebase and hence failed connection. My question is what ports need to be opened and to what destination URLs to make this application work normally?
Any help will be much appreciated!
Finally, after struggling with the issue for several days got it working. Needed to contact network team and request to perform following actions:
Open ports 5228, 5229, 5230 for Firebase communication.
Opened communication at proxy level between the source server and following URLs:
fcm.googleapis.com
gcm-http.googleapis.com
accounts.google.com
{project-name}.firebaseio.com
Added following code in my node.js application:
var globalTunnel = require('global-tunnel-ng');
globalTunnel.initialize({
host: '<proxy-url>',
port: <proxy-port>,
//proxyAuth: 'userId:password', // optional authentication
sockets: 50 // optional pool size for each http and https
});
Installed module global-tunnel-ng:
npm install global-tunnel-ng
It solved the my problem and I hope it can help others too. :-)
I used Wireshark to monitor a local install of a Node.js application using the Admin SDK for firestore. I also referenced this list by Netify. This is what I found:
*.firebaseio.com
*.google.com
*.google-analytics.com
*.googleapis.com
*.firebase.com
*.firebaseapp.com
I'm building an Azure web app for a client that will be provisioned into many other directories for their customers. This app will call a web API in my client's directory, which will then call back to another web API in the customer's directory. Something like this:
Other Customer AAD1 --------- My client AAD2
App --------------------------------> Web API 2
Web API 1 <-------------------------- Web API 2
We have been able to get the first call to work. This requires a corresponding App Registation for Web API 2 in AAD1. We figure that we could get the callback to work by following the same pattern, with a registration for Web API1 in AAD2. However, that might be a LOT of these 'proxy' registration in my client's AAD, so we're looking at alternatives.
We are exploring using Managed Service Identity, which we think will allow us to get tokens that are valid for resources in other tenants. If there's a better way, I'm certainly interested in knowing about it.
I've followed the code example from here using the Microsoft.Azure.Services.AppAuthentication library: https://learn.microsoft.com/en-us/azure/app-service/app-service-managed-service-identity#obtaining-tokens-for-azure-resources
// In Web API 2
using Microsoft.Azure.Services.AppAuthentication;
// ...
var azureServiceTokenProvider = new AzureServiceTokenProvider();
string accessToken = await azureServiceTokenProvider.GetAccessTokenAsync(
"https://<App ID URI for Web API1>");
Web API2 is configured to have a Managed Service Identity.
I'm currently running this on my local machine, and I've installed Azure CLI and I'm logged in. I've tried 'az account get-access-token', and I get a valid token.
When Web API2 tries to get the token to be able to call Web API1, I get an exception:
Parameters: Connectionstring: [No connection string specified], Resource: , Authority: . Exception Message: Tried the following 2 methods to get an access token, but none of them worked.
Parameters: Connectionstring: [No connection string specified], Resource: , Authority: . Exception Message: Tried to get token using Managed Service Identity. Unable to connect to the Managed Service Identity (MSI) endpoint. Please check that you are running on an Azure resource that has MSI setup.
Parameters: Connectionstring: [No connection string specified], Resource: , Authority: . Exception Message: Tried to get token using Azure CLI. Access token could not be acquired. ERROR: Get Token request returned http error: 400 and server response: {"error":"invalid_grant","error_description":"AADSTS65001: The user or administrator has not consented to use the application with ID '04b07795-8ddb-461a-bbee-02f9e1bf7b46' named 'Web API 1'. Send an interactive authorization request for this user and resource.\r\nTrace ID: f5bb0d4d-6f92-4fdd-81b7-e82a78720a00\r\nCorrelation ID: 04f92114-8d9d-40c6-b292-965168d6a919\r\nTimestamp: 2017-10-19 16:39:22Z","error_codes":[65001],"timestamp":"2017-10-19 16:39:22Z","trace_id":"f5bb0d4d-6f92-4fdd-81b7-e82a78720a00","correlation_id":"04f92114-8d9d-40c6-b292-965168d6a919"}
What's interesting is that there's no application with ID '04b07795-8ddb-461a-bbee-02f9e1bf7b46' in either AAD1 or AAD2. Is this a known Azure app? I thought that it might be the Service Management API, but I'm not sure.
In any case, I'm not sure of the proper way to grant permission. I've tried building different content URLs like this into my browser, but none of them seem to have done the trick:
https://login.microsoftonline.com/(AAD1 ID)/adminconsent
?client_id=(App ID)
&redirect_uri=https://localhost:44341
&resource=(App ID URI for Web API1)
&prompt=admin_consent
https://login.microsoftonline.com/(AAD1 ID)/adminconsent
?client_id=04b07795-8ddb-461a-bbee-02f9e1bf7b46
&redirect_uri=https://localhost:44341
&resource=(App ID URI for Web API1)
&prompt=admin_consent
(This last one tells me that the reply URL is incorrect; since it's not one of my apps, I can't find the reply URL)
Note that the tenant is AAD1.
Am I missing something, or am I not using this feature correctly?
Thanks in advance.
AzureServiceTokenProvider uses Azure CLI (among other options) for local development. For a scenario where a service calls an Azure Service, this works using the developer identity from Azure CLI, since Azure services allow access to both users and applications.
For a scenario where a service calls another custom service (like your scenario), you need to use a service principal for local development. For this, you have two options:
Login to Azure CLI using a service principal.
First, create a service principal for local development
https://learn.microsoft.com/en-us/cli/azure/create-an-azure-service-principal-azure-cli?view=azure-cli-latest
Then login to Azure CLI using it.
az login --service-principal -u 25922285-eab9-4262-ba61-8083533a929b --password <<pwd>> --tenant 72f988bf-86f1-41af-91ab-2d7cd011db47 --allow-no-subscriptions
Use the --allow-no-subscriptions argument since this service principal may not have access to any subscription.
Now, AzureServiceTokenProvider will get a token using this service principal for local development.
Specify service principal details in an environment variable. AzureServiceTokenProvider will use the specified service principal for local development. Please see the section Running the application using a service principal in local development environment in this sample on how to do that. https://github.com/Azure-Samples/app-service-msi-keyvault-dotnet
Note: Ths is only for local development. AzureServiceTokenProvider will use MSI when deployed to App Service.
I try to run a ASP.NET Core MVC Web application on the Swisscom Appcloud. But when I start the Application I get following Error-Message in the Console:
2017-01-24 14:29:53 [CELL/0] ERR Timed out after 1m0s: health check never passed.
Its looks like the Appcloud cannot check the Health of my Application. Do I need to install a Nuget-Package or something else to get this up and running?
Thanks for your effort
By default, Cloud Foundry makes a health check by trying to connect to the port which the application is exposing.
If your application is not exposing ANY port (e.g., it's not a web service with APIs and so on), then you should add the health-check-type attribute to none, as described here.
If after that you still get errors, then I suggest you to find where your application is listening to a given port. In Cloud Foundry you must listen to $PORT, which is a environment variable. You can check an example of that here.
As gsmachado has already mentioned, you must listen to a specific port.
The .NET Core buildpack configures the app web server automatically so you don’t have to handle this yourself. But you have to prepare your app in a way that allows the buildpack to deliver this information via the command line to your app.
The buildpack will start your app with the following command:
$ dotnet run --server.urls http://0.0.0.0:${PORT}
Therefore you have to add the command line as a configuration provider and then add the UseConfiguration extension to pass the configuration to the WebHostBuilder
e.g.:
var config = new ConfigurationBuilder()
.AddCommandLine(args)
.Build();
var host = new WebHostBuilder()
.UseKestrel()
.UseConfiguration(config)
.UseStartup<Startup>()
.Build();