C# : Creating a Single Bot Service to Support Multiple Bot Applications

Question

This code was on this website https://www.microsoft.com/reallifecode/2017/01/10/creating-a-single-bot-service-to-support-multiple-bot-applications/#comment-148
I am new

Answer 1

Resume:

• Create a class and inherit from ICredentialProvider class.

• Then, add your Microsoft appId and password into a Dictionary.

• Add your method to check if it is a valid app; also get password for your application.

• Add custom authentication to your api/messages controller.

---

First change your WebApiConfig :

Should be :

config.Routes.MapHttpRoute(
    name: "DefaultApi",
    routeTemplate: "api/{controller}/{action}/{id}",
    defaults: new { action = RouteParameter.Optional, id = RouteParameter.Optional }
);

Then, your custom authentication class, starting from YourNameSpace:

namespace YourNameSpace {
    public class MultiCredentialProvider : ICredentialProvider
    {
        public Dictionary<string, string> Credentials = new Dictionary<string, string>
        {
            { MicrosoftAppID1, MicrosoftAppPassword1},
            { MicrosoftAppID2, MicrosoftAppPassword2}
        };

        public Task<bool> IsValidAppIdAsync(string appId)
        {
            return Task.FromResult(this.Credentials.ContainsKey(appId));
        }

        public Task<string> GetAppPasswordAsync(string appId)
        {
            return Task.FromResult(this.Credentials.ContainsKey(appId) ? this.Credentials[appId] : null);
        }

        public Task<bool> IsAuthenticationDisabledAsync()
        {
            return Task.FromResult(!this.Credentials.Any());
        }
    }

After that, add your controller (api/messages) with your custom BotAuthentication, plus your static constructor to update the container to use the right MicorosftAppCredentials based on identity set by BotAuthentication:

[BotAuthentication(CredentialProviderType = typeof(MultiCredentialProvider))]
public class MessagesController : ApiController
{
    static MessagesController()
    {
        var builder = new ContainerBuilder();

        builder.Register(c => ((ClaimsIdentity)HttpContext.Current.User.Identity).GetCredentialsFromClaims())
            .AsSelf()
            .InstancePerLifetimeScope();
        builder.Update(Conversation.Container);
    }

You can handle now messages by :

[BotAuthentication(CredentialProviderType = typeof(MultiCredentialProvider))]
public async Task<HttpResponseMessage> Post([FromBody]Activity activity)
{
    if (activity.Type == ActivityTypes.Message)
    { 
        ConnectorClient connector = new ConnectorClient(new Uri(activity.ServiceUrl));
        Activity reply = activity.CreateReply("it Works!");                       
        await connector.Conversations.ReplyToActivityAsync(reply);
    }
}

This code is tested and working for my bots.
Hope it helps :)