Layer Authentication Idea

example.m

LYRLayer *client = [LYRLayer new];
NSString *userID = @"...";

LYRLayerNonceAuthenticationChallenge nac = ^(NSString *nonce, LYRLayerNonceAuthenticationChallengeCompletion completion) {
    // The integrator would fill make the approriate server calls here then call the completion block with a token or NULL if a problem occurred.
    // [ get:@"/layer/authenticate" completion:^(NSDictionary *parameters){
    //  completion(parameters["layer_identity_token"]);
    // }];
};

[client autoConnectAndAuthenticateUserID:userID withNonceAuthenticationChallenge:nac completion:^(NSError *error){
    // Hurray - user is connected and authenticated.
}];