Facebook authentication failing sometime with an InvalidOperationException

ServiceStack Authentication
1

This happens when I log in to Facebook and then log in again. It fails here:

public static class UserAuthExtensions
{
    public static void PopulateMissing(this IUserAuthDetails instance, IAuthTokens tokens, bool overwriteReserved = false)
    {
        if (instance == null)
            throw new ArgumentNullException("instance");
        ...

        if (tokens.Items != null)
        {
            var items = instance.Items ?? (instance.Items = new Dictionary<string, string>());
            tokens.Items.ForEach((x,y) => items[x] = y); // EXCEPTION!
        }

        PopulateMissingExtended(instance, tokens, overwriteReserved);
    }

This is the error I get:

Response Status

Error Code
    InvalidOperationException
Message
    Collection was modified; enumeration operation may not execute.
Stack Trace
    [Authenticate: 6/9/2016 1:40:05 PM]: [REQUEST: {provider:facebook}] System.InvalidOperationException: Collection was modified; enumeration operation may not execute. at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource) at System.Collections.Generic.Dictionary`2.Enumerator.MoveNext() at DictionaryExtensions.ForEach[TKey,TValue](Dictionary`2 dictionary, Action`2 onEachFn) at ServiceStack.Auth.UserAuthExtensions.PopulateMissing(IUserAuthDetails instance, IAuthTokens tokens, Boolean overwriteReserved) at ServiceStack.Auth.RedisAuthRepository`2.CreateOrMergeAuthSession(IAuthSession authSession, IAuthTokens tokens) at ServiceStack.Auth.AuthProvider.OnAuthenticated(IServiceBase authService, IAuthSession session, IAuthTokens tokens, Dictionary`2 authInfo) at ServiceStack.Auth.FacebookAuthProvider.Authenticate(IServiceBase authService, IAuthSession session, Authenticate request) at ServiceStack.Auth.AuthenticateService.Authenticate(Authenticate request, String provider, IAuthSession session, IAuthProvider oAuthConfig) at ServiceStack.Auth.AuthenticateService.Post(Authenticate request) at lambda_method(Closure , Object , Object ) at ServiceStack.Host.ServiceRunner`1.Execute(IRequest request, Object instance, TRequest requestDto)
Errors

Please let me know ow to fix this… TIA!

2

Should now be resolved with the latest v4.0.59 that’s on MyGet.

3

Unfortunately, with 4.0.60:

[Authenticate: 6/15/2016 9:30:00 PM]: [REQUEST: {provider:facebook}] System.InvalidOperationException: Collection was modified; enumeration operation may not execute. at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource) at System.Collections.Generic.Dictionary2.Enumerator.MoveNext() at ServiceStack.Auth.UserAuthExtensions.PopulateMissing(IUserAuthDetails instance, IAuthTokens tokens, Boolean overwriteReserved) at ServiceStack.Auth.RedisAuthRepository2.CreateOrMergeAuthSession(IAuthSession authSession, IAuthTokens tokens) at ServiceStack.Auth.AuthProvider.OnAuthenticated(IServiceBase authService, IAuthSession session, IAuthTokens tokens, Dictionary2 authInfo) at ServiceStack.Auth.FacebookAuthProvider.Authenticate(IServiceBase authService, IAuthSession session, Authenticate request) at ServiceStack.Auth.AuthenticateService.Authenticate(Authenticate request, String provider, IAuthSession session, IAuthProvider oAuthConfig) at ServiceStack.Auth.AuthenticateService.Post(Authenticate request) at lambda_method(Closure , Object , Object ) at ServiceStack.Host.ServiceRunner1.Execute(IRequest request, Object instance, TRequest requestDto)

4

I’m not seeing any issue with the current implementation are you sure you’ve upgraded to v4.0.60 properly?

5

Oh, this is embarrassing… It seems like my DLLs were not updated. Sorry about the fuzz, it works as it should now! Case closed.

1 Like