configurationManager.GetConfigurationAsync just hangs

Created a developer test environment (Aries Systems-dev-723639).

Am using the verbatim code example provided at https://developer.okta.com/code/dotnet/jwt-validation.

Environment is ASP.NET (not core).

Am using the following url to get the login screen which redirects correctly to my aspx page and I can capture the returned token from the form returned - https://dev-723639.oktapreview.com/oauth2/v1/authorize?client_id=0oaiaj7t90eEXe0y20h7&redirect_uri=http://local.editorialmanager.com/jeanspec16017/AscoLoginHandler.aspx&response_type=token&scope=openid&state=‘testing’&prompt=login&nonce=‘currentnonce’&response_mode=form_post

Am then sending that token to async function as indicated in the API documentation. I’ve tried both using the authorization server url that seemed to be auto-created for me when I created my application in the development environment as well as trying just to use the ‘default’ authorization server as indicated in the documentation.

Code is as follows. I get as far as the call to the configurationManager.GetConfigurationAsync and the application/page just hangs:

private static async Task<JwtSecurityToken> ValidateAscoToken(string token)
{
    try
    {

        var issuer = "https://dev-723639.oktapreview.com/oauth2/AriesEMApplication";
        var configurationManager = new ConfigurationManager<OpenIdConnectConfiguration>(
            issuer + "/.well-known/oauth-authorization-server",
            new OpenIdConnectConfigurationRetriever(),
            new HttpDocumentRetriever());
        var cancellationToken = default(CancellationToken);
        var discoveryDocument = await configurationManager.GetConfigurationAsync(cancellationToken);
        var signingKeys = discoveryDocument.SigningKeys;

        var validationParameters = new TokenValidationParameters
        {
            ValidateIssuer = true,
            ValidIssuer = issuer,
            ValidateIssuerSigningKey = true,
            IssuerSigningKeys = signingKeys,
            ValidateLifetime = true,
            ClockSkew = TimeSpan.FromMinutes(1)
        };

        var principal =
            new JwtSecurityTokenHandler().ValidateToken(token, validationParameters, out var rawValidatedToken);

        return (JwtSecurityToken) rawValidatedToken;
    }
    catch (Exception AnyError)
    {
        var anyError = AnyError;
        return null;
    }
}

Below is the logged network traffic after the configurationManager.GetConfigurationAsync(cancellationToken) is called:

  1. Request URL:

ws://localhost:58854/08884e9bd8cd4738bc5b3330e9da6107/browserLinkSignalR/connect?transport=webSockets&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAAPIUHyqtR3kWPwR9Ugd4FYQAAAAACAAAAAAADZgAAwAAAABAAAACkPPj1aPJ5Xjki2b%2BPQ2oZAAAAAASAAACgAAAAEAAAANZfdzhnU8acUjUEE6iyvykoAAAANj%2FqYLgHwUeI02jSNGZ1XfnK0a3kiUn%2B7FbDUSw4TaBi0r9DiwG2SBQAAAC3UQuzTe1UglBgfN%2FkrIIZt1u42w%3D%3D&requestUrl=http%3A%2F%2Flocal.editorialmanager.com%2Fjeanspec16017%2FAscoLoginHandler.aspx&browserName=Chrome&userAgent=Mozilla%2F5.0+(Windows+NT+10.0%3B+Win64%3B+x64)+AppleWebKit%2F537.36+(KHTML%2C+like+Gecko)+Chrome%2F70.0.3538.110+Safari%2F537.36&tid=0

  1. Request Method:

GET

  1. Status Code:

101 Switching Protocols

  1. Response Headersview source

  2. Access-Control-Allow-Credentials:

true

  1. Access-Control-Allow-Origin:

http://local.editorialmanager.com

  1. Connection:

Upgrade

  1. Date:

Mon, 17 Dec 2018 16:35:42 GMT

  1. Sec-WebSocket-Accept:

xIRoXHHZi2MsKlx5R14ZnM6uk+E=

  1. Server:

Microsoft-HTTPAPI/2.0

  1. Upgrade:

websocket

  1. X-Content-Type-Options:

nosniff

  1. Request Headersview source

  2. Accept-Encoding:

gzip, deflate, br

  1. Accept-Language:

en-US,en;q=0.9

  1. Cache-Control:

no-cache

  1. Connection:

Upgrade

  1. Host:

localhost:58854

  1. Origin:

http://local.editorialmanager.com

  1. Pragma:

no-cache

  1. Sec-WebSocket-Extensions:

permessage-deflate; client_max_window_bits

  1. Sec-WebSocket-Key:

415zqspz0wk2hZloaSVntQ==

  1. Sec-WebSocket-Version:

13

  1. Upgrade:

websocket

  1. User-Agent:

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36

  1. Query String Parametersview sourceview URL encoded

  2. transport:

webSockets

  1. connectionToken:

AQAAANCMnd8BFdERjHoAwE/Cl+sBAAAAPIUHyqtR3kWPwR9Ugd4FYQAAAAACAAAAAAADZgAAwAAAABAAAACkPPj1aPJ5Xjki2b+PQ2oZAAAAAASAAACgAAAAEAAAANZfdzhnU8acUjUEE6iyvykoAAAANj/qYLgHwUeI02jSNGZ1XfnK0a3kiUn+7FbDUSw4TaBi0r9DiwG2SBQAAAC3UQuzTe1UglBgfN/krIIZt1u42w==

  1. requestUrl:

http://local.editorialmanager.com/jeanspec16017/AscoLoginHandler.aspx

  1. browserName:

Chrome

  1. userAgent:

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36

  1. tid:

0