opening zipped folder - Githubissues

Novotnde commented 3 years ago

Hello, I have a question I am trying to use embedio in xamarin application and I need to open up a zip folder so far no luck. Since its been few days I decided to ask for some advice

I have my folder as embedded resource and I am trying to unzip it with .WithZipFileStream - but I am getting 404 exception. Since I am unsure that this method also works with folders I have tried to unzip it and then use static folders. - here I am getting iOS exception

[HandleHttpException] exception. Request route: http://127.0.0.1:8080/index.html. 2021-06-23 11:24:23.508491+0200 EsignoReader.iOS[25534:34280063] 2021-06-23 11:24:23.667350+0200 EsignoReader.iOS[25534:34278886] [Process] 0x7f93743fbc20 - [pageProxyID=5, webPageID=6, PID=25535] WebPageProxy::didFailProvisionalLoadForFrame: frameID = 3, domain = WebKitErrorDomain, code = 102

public App()
{

    Task.Factory.StartNew(async () =>
    {
        using (var server = CreateWebServerSingleIndex("http://*:8080"))
        {
            await server.RunAsync();
        }
    });

MainPage = new NavigationPage(new WebViewPage());

}

 private static WebServer CreateWebServerSingleIndex(string url)
 {

            string[] names = typeof(EmbeddedResourceDataStream).GetTypeInfo().Assembly.GetManifestResourceNames();
            Stream zipFileStream = typeof(EmbeddedResourceDataStream).GetTypeInfo().Assembly
                .GetManifestResourceStream("EsignoReader.test.zip");
            var server = new WebServer(o => o
                .WithUrlPrefix(url)
                .WithMode(HttpListenerMode.EmbedIO)).
                WithZipFileStream("/test/", zipFileStream);

            server.StateChanged += (s, e) => $"WebServer New State - {e.NewState}".Info();

            return server;
  }

private WebServer CreateWebServer(string url)
{
    var webApiModule = new WebApiModule("/api", ResponseSerializer.Json).WithController<TestController>()
        .HandleUnhandledException(ExceptionHandler.DataResponseForException);

    using (var embededResource = typeof(EmbeddedResourceDataStream).GetTypeInfo().Assembly
        .GetManifestResourceStream("EsignoReader.server.zip"))
    {
        using (var fileStream = File.Create(Path.Combine(FileSystem.CacheDirectory, "server.zip")))
        {
            embededResource.CopyTo(fileStream);
        }
    }
        ZipFile.ExtractToDirectory(Path.Combine(FileSystem.CacheDirectory, "server.zip"),
            Path.Combine(FileSystem.CacheDirectory, "server"));

    var server =
        new WebServer(o => o.WithUrlPrefix(url).WithMode(HttpListenerMode.EmbedIO)).WithStaticFolder("/",
            Path.Combine(FileSystem.CacheDirectory, "server"), false);
    server.WithModule(webApiModule).HandleHttpException(HandleHttpException);
    server.StateChanged += ServerOnStateChanged;

    return server;
}

Could you please advise where am I making mistake?

rdeago commented 3 years ago

Hello @Novotnde, thanks for using EmbedIO!

I've never worked with Xamarin, so I hope someone else will help you with platform-specific issues. In the meanwhile, here's a couple things I would do if facing a similar problem:

Knowing that ZipFileProvider is not thread-safe and therefore may have problems with simultaneous requests, I'd try the embedded resource scenario with the simplest possible index.html (<html><body>Hello world!</body></html> isn't exactly valid HTML - no head tag, no title, etc. - but will do the job). If that works, try adding a couple images, or an external stylesheet and an external script, and see if you start getting errors.
I'd google (or duckduckgo) every single word in the iOS exception message (copy-to-directory scenario), in the hope of gaining a better understanding, then I'd post my findings, along with the exception message, here.
I'd have a look at previous Xamarin-related EmbedIO issues for similar / related problems.
While I'm at it, why not take a look at issues in the xamarin-macios repository too.
I'd try a simple Web server, with just an OnAny returning the HTML code above, to rule out problems with anything not fileModule-related.

It's not much, I know, and you probably have already done all of the above - but it's all I can do, sorry.

Also, it may help if you post your version of Xamarin, Mono, iOS, and Visual Studio; while this is always good practice, it is especially with "moving targets" like Xamarin/iOS.

Novotnde commented 3 years ago

Hello, thank you for fast reply!

I have figured the way to do it with WithZipFileStream at the end. Thank you very much!

rdeago commented 3 years ago

@Novotnde you're welcome!

Let me guess:

another module, most probably a WebApiModule, was "stealing" requests from the FileModule created by WithZipFileStream;
you found a similar problem in this issue.

If it was something else, please take a minute to explain, so others can benefit from your experience. Thanks!

jswigart commented 1 year ago

I worked around a threading issue with a SharpZipLib provider

SharpZipFileProvider.zip

unosquare / embedio

opening zipped folder #525