I deployed my ASP.NET application to a remote server with a hosting company, and when i try to send data from Postman, i get the internal server error with no definite error message. I have set custom error mode to off in the web config file. please can anyone help me? I have checked for several solutions but nothing.
PS: i am new to ASP.NET deployment with other companies apart from Azure
In this case, you should log error to file to see what issues in deployment mode.
This way i implemented global error log.
public class ExceptionHandlingAttribute : ExceptionFilterAttribute
{
public override void OnException(HttpActionExecutedContext context)
{
//Log Critical errors
// You can use log4net library and configure log folder
}
}
In WebApiConfig.cs file you register it.
public static void Register(HttpConfiguration config)
{
// .....
config.Filters.Add(new ExceptionHandlingAttribute());
}
Related
i have created sample rest service which just return xml
its work fine in my development environment
[RouteAttributes(UriTemplate = "{appname}/adfsapi/mex")]
public class SAMLMexRouteHandler : IRouteHandler
{
}
where app name will be change, and my url
http://localhost:64219/test/adfsapi/mex
till here everything fine
but when i hosting app to IIS
than trying to call my rest service url
http://localhost:8089/testapp1/adfsapi/mex
its throwing 404 not found error .
any suggestion which step i am doing wrong.
Thanks
i solved the issue by converting to application for every directory .
and my URI will be like this -
[RouteAttributes(UriTemplate = "adfsapi/mex")]
public class SAMLMexRouteHandler : IRouteHandler
{
}
I had a code that worked unlit few days ago: this is an xamarin.android activity code
[Activity(Label = "AuthSample", MainLauncher = true, Icon = "#drawable/icon")]
public class MainActivity : Activity
{
Button login;
//Mobile Service Client reference
private MobileServiceClient client;
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
// Create the Mobile Service Client instance, using the provided
// Mobile Service URL and key
client = new MobileServiceClient("https://XXXXXXX.azurewebsites.net");
// Set our view from the "main" layout resource
SetContentView (Resource.Layout.Main);
login = FindViewById<Button>(Resource.Id.buttonLoginUser);
login.Click += onLoginClick;
}
private async void onLoginClick(object sender, EventArgs e)
{
// Load data only after authentication succeeds.
if (await Authenticate())
{
}
}
// Define a authenticated user.
private MobileServiceUser user;
private async Task<bool> Authenticate()
{
var success = false;
try
{
// Sign in with Microsoft login using a server-managed flow.
user = await client.LoginAsync(this,
MobileServiceAuthenticationProvider.MicrosoftAccount);
CreateAndShowDialog(string.Format("you are now logged in - {0}",
user.UserId), "Logged in!");
success = true;
}
catch (Exception ex)
{
CreateAndShowDialog(ex, "Authentication failed");
}
return success;
}
private void CreateAndShowDialog(Exception exception, String title)
{
CreateAndShowDialog(exception.Message, title);
}
private void CreateAndShowDialog(string message, string title)
{
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.SetMessage(message);
builder.SetTitle(title);
builder.Create().Show();
}
}
i did all the instruction in the tutorial.
the LoginAsync redirect me to the Microsoft login page, i am able to authenticate and after a successful authentication i get this error : "the page cannot be displayed because an internal server error has occured"
i am working with 3.1 azure sdk version
According to your description, I assumed that you could follow the steps below to troubleshoot this issue.
For Node.js backend
You could leverage App Service Editor or kudu for create the iisnode.yml file under root folder (D:\home\site\wwwroot) if not exists. Then add the following settings for enable logging to debug a Node.js web app in azure app service:
loggingEnabled: true
logDirectory: iisnode
Additionally, here is a similar issue about enable node.js logging, you could refer to it. Also, for more details about kudu and app service editor, you could refer to here.
For C# backend
you could edit App_Start\Startup.MobileApp.cs file and configure the IncludeErrorDetailPolicy as follows for capturing the error details:
HttpConfiguration config = new HttpConfiguration();
config.IncludeErrorDetailPolicy = IncludeErrorDetailPolicy.Always;
For a simple way, you could access https://{your-app-name}.azurewebsites.net/.auth/login/{provider-name} via the browser, then check the detailed error message for locating the specific error.
UPDATE:
Based on your address, I checked your app and found I could log with my Microsoft Account via the browser. Then I checked with your table endpoint and found the follow error:
https://{your-app-name}.azurewebsites.net/tables/todoitem?ZUMO-API-VERSION=2.0.0
message: "An error has occurred.",
exceptionMessage: "A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 52 - Unable to locate a Local Database Runtime installation. Verify that SQL Server Express is properly installed and that the Local Database Runtime feature is enabled.)",
exceptionType: "System.Data.SqlClient.SqlException",
As I known, when following the quickstart to create the data store for your backend, downloading the C# backend, then deploy the backend to moible app. At this point, your created connection string via azure portal would not be exposed to your ASP.NET application, and the default connection string would use the localdb, you need to edit the Web.config file before deploying to azure mobile app as follows:
<connectionStrings>
<add name="MS_TableConnectionString" connectionString="Data Source=tcp:{your-sqlserver-name}.database.windows.net,1433;Initial Catalog={db-name};User ID={user-id};Password={password}" providerName="System.Data.SqlClient" />
</connectionStrings>
Or configure the connection string when deploy your app to azure mobile app via VS as follows:
It seems that there was a problem in azure or in Microsoft authentication.
after two days of frustration everything just started to work again!!
I have service which runs some init scripts after application startup (implemented with ApplicationListener<ApplicationReadyEvent>). In this scripts I need to call another services with RestTemplate which is #LoadBalanced. When the call to service is invoked there's no information about instances of remote service because discovery server was not contacted at that time (I guess).
java.lang.IllegalStateException: No instances available for api-service
at org.springframework.cloud.netflix.ribbon.RibbonLoadBalancerClient.execute(RibbonLoadBalancerClient.java:79)
So is there way how to get list of available services from discovery server at application startup, before my init script will execute?
Thanks
edit:
The problem is more related to fact, that in current environment (dev) all services are tied together in one service (api-service). So from within api-service I'm trying to call #LoadBalanced client api-service which doesn't know about self? Can I register some listener or something similar to know when api-service (self) will be available?
here are the sample applications. I'm mainly interested how to have working this method
edit2:
Now there could be the solution to create EurekaListener
public static class InitializerListener implements EurekaEventListener {
private EurekaClient eurekaClient;
private RestOperations restTemplate;
public InitializerListener(EurekaClient eurekaClient, RestOperations restTemplate) {
this.eurekaClient = eurekaClient;
this.restTemplate = restTemplate;
}
#Override
public void onEvent(EurekaEvent event) {
if (event instanceof StatusChangeEvent) {
if (((StatusChangeEvent) event).getStatus().equals(InstanceInfo.InstanceStatus.UP)) {
ResponseEntity<String> helloResponse = restTemplate.getForEntity("http://api-service/hello-controller/{name}", String.class, "my friend");
logger.debug("Response from controller is {}", helloResponse.getBody());
eurekaClient.unregisterEventListener(this);
}
}
}
}
and then register it like this:
EurekaEventListener initializerListener = new InitializerListener(discoveryClient, restTemplate);
discoveryClient.registerEventListener(initializerListener);
However this is only executed only when application is registered to discovery service first time. Next time when I stop the api-service and run it again, event is not published. Is there any other event which can I catch?
Currently, in Camden and earlier, applications are required to be registered in Eureka before they can query for other applications. Your call is likely too early in the registration lifecycle. There is an InstanceRegisteredEvent that may help. There are plans to work on this in the Dalston release train.
I'm trying to create a SOAP service in AEM 6.2 (the client cant make a REST call). Right now its up and works, the problem is when we redeploy or the AEM instance is reset... then the port of the service gets locked. Error on "create()".
final JaxWsServerFactoryBean jaxWsServerFactoryBean = new JaxWsServerFactoryBean();
jaxWsServerFactoryBean.setServiceClass(getWebServiceClass());
jaxWsServerFactoryBean.setAddress(this.webServiceAddress);
jaxWsServerFactoryBean.setServiceBean(this);
jaxWsServerFactoryBean.getInInterceptors().add(new LoggingInInterceptor());
jaxWsServerFactoryBean.getOutInterceptors().add(new LoggingOutInterceptor());
server = jaxWsServerFactoryBean.create();
*ERROR* [OsgiInstallerImpl] org.apache.cxf.transport.http_jetty.JettyHTTPServerEngine Could not start Jetty server on port 4,517: Address already in use: bind
The first time I deploy works fine but then I have to change port for each redeploy... I'm closing the server if exists before that create, and if I call "isStarted()" it says false.
server.getDestination().shutdown();
server.stop();
server.destroy();
Really stuck for days on this, thank you for your help.
You should create a OSGI bundle and create your soap service inside the bundle.
#Activate
public void activate(BundleContext bundleContext) throws Exception {
... start your soap service
}
#Deactivate
public void deactivate() throws Exception {
... stop your soap service
}
Now you can restart your soap service by restarting the bundle. here is reference how to create a OSGI bundle. http://www.aemcq5tutorials.com/tutorials/create-osgi-bundle-in-aem/
Heroku recently began supporting Java apps. Looking through the docs, it seems to resemble the Java Servlet Standard. Does anyone know of an instance where a GWT app has been successfully deployed on Heroku? If so, are there any limitations?
Yes, I've got a successful deployment using the getting started with Java instructions here:
http://devcenter.heroku.com/articles/java
I use the Maven project with appassembler plugin approach but added gwt-maven-plugin to compile a GWT app during the build.
When you push to heroku you see the GWT compile process running, on one thread only so quite slow but it works fine.
The embedded Jetty instance is configured to serve up static resources at /static from src/main/resources/static and I copy the compiled GWT app to this location during the build and then reference the .nocache.js as normal.
What else do you want to know?
You've got a choice, either build the Javascript representation of your GWT app locally into your Maven project, commit it and the read it from your app, or to generate it inside Heroku via the gwt-maven-plugin as I mentioned.
The code to serve up files from a static location inside your jar via embedded Jetty is something like this inside a Guice ServletModule:
(See my other answer below for a simpler and less Guice-driven way to do this.)
protected void configureServlets() {
bind(DefaultServlet.class).in(Singleton.class);
Map<String, String> initParams = new HashMap<String, String>();
initParams.put("pathInfoOnly", "true");
initParams.put("resourceBase", staticResourceBase());
serve("/static/*").with(DefaultServlet.class, initParams);
}
private String staticResourceBase() {
try {
return WebServletModule.class.getResource("/static").toURI().toString();
}
catch (URISyntaxException e) {
e.printStackTrace();
return "couldn't resolve real path to static/";
}
}
There's a few other tricks to getting embedded Jetty working with guice-servlet, let me know if this isn't enough.
My first answer to this turned out to have problems when GWT tried to read its serialization policy. In the end I went for a simpler approach that was less Guice-based. I had to step through the Jetty code to understand why setBaseResource() was the way to go - it's not immediately obvious from the Javadoc.
Here's my server class - the one with the main() method that you point Heroku at via your app-assembler plugin as per the Heroku docs.
public class MyServer {
public static void main(String[] args) throws Exception {
if (args.length > 0) {
new MyServer().start(Integer.valueOf(args[0]));
}
else {
new MyServer().start(Integer.valueOf(System.getenv("PORT")));
}
}
public void start(int port) throws Exception {
Server server = new Server(port);
ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
context.setBaseResource(createResourceForStatics());
context.setContextPath("/");
context.addEventListener(new AppConfig());
context.addFilter(GuiceFilter.class, "/*", null);
context.addServlet(DefaultServlet.class, "/");
server.setHandler(context);
server.start();
server.join();
}
private Resource createResourceForStatics() throws MalformedURLException, IOException {
String staticDir = getClass().getClassLoader().getResource("static/").toExternalForm();
Resource staticResource = Resource.newResource(staticDir);
return staticResource;
}
}
AppConfig.java is a GuiceServletContextListener.
You then put your static resources under src/main/resources/static/.
In theory, one should be able to run GWT using the embedded versions of Jetty or Tomcat, and bootstrap the server in main as described in the Heroku Java docs.