question

I get this error message in PlayStream when I call the function 'ForgotPassword':

"Payload": {
        "Source": "API",
        "FunctionName": "ForgotPassword",
        "ExecutionTimeMilliseconds": 0,
        "Result": {
            "ErrorCode": "CloudScriptAzureFunctionsHTTPRequestError",
            "Message": "Invocation of cloud script function ForgotPassword failed",
            "ErrorAndMessage": {
                "Item1": "CloudScriptAzureFunctionsHTTPRequestError",
                "Item2": "Invocation of cloud script function ForgotPassword failed"
            }
        },
        "ResultTooLarge": false

And in Azure Portal:

2020-09-22T11:18:09.260 [Information] Executing 'ForgotPassword' (Reason='This function was programmatically called via the host APIs.', Id=fdf603b0-8d9f-462b-a38d-5a78d3e40cce)
2020-09-22T11:18:09.289 [Information] Run C# HTTP trigger function processed a request.
2020-09-22T11:18:09.330 [Information] The new password = ...
2020-09-22T11:18:09.331 [Information] The contact Email = ...
2020-09-22T11:18:09.331 [Information] TitleId = ...
2020-09-22T11:18:09.331 [Information] DeveloperSecretKey = ...
2020-09-22T11:18:09.593 [Error] Executed 'ForgotPassword' (Failed, Id=fdf603b0-8d9f-462b-a38d-5a78d3e40cce, Duration=334ms)Object reference not set to an instance of an object.

What is wrong with the function 'ForgotPassword'?

In addition, the Function URL is very long.

https://myplayfabfunctionapp.azurewebsites.net/api/ForgotPassword?code=JSXUqdml10yXBuZFYWVIcg%2FjMClz6PltkH7uYuPFpO2kmH0%2FjbU4tA%3D%3D

Is it normal that the Function URL is so long? I thought that the Function URL would always end with the function name, for example: https://myplayfabfunctionapp.azurewebsites.net/api/ForgotPassword

But in this case it doesn't end with the function name. I have registered the long Function URL and the Function name in my title account-->Functions-->Register Function.

Client code:

var result = await PlayFabCloudScriptAPI.ExecuteFunctionAsync(new ExecuteFunctionRequest()
{
    Entity = new PlayFab.CloudScriptModels.EntityKey()
    {
        Id = entityid,
        Type = entitytype,
    },
    FunctionName = "ForgotPassword",
    FunctionParameter = new { contactEmail = contactmail, newPassword = newpassword },
    GeneratePlayStreamEvent = true
});

Azure Function code:

namespace My.Functions
{
    public static class NewFunction
    {
        [FunctionName("ChangeDisplayname")]
        public static async Task<dynamic> MakeApiCall(
            [HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = null)] HttpRequestMessage req, ILogger log)
        {
            /* Create the function execution's context through the request */
            var context = await FunctionContext<dynamic>.Create(req);
            var args = context.FunctionArgument;

            var desireddisplayname = args["NewDisplayname"];
 
            /* Create the request object through the SDK models */
            var request = new UpdateUserTitleDisplayNameRequest();
            request.PlayFabId = context.CallerEntityProfile.Lineage.MasterPlayerAccountId;
            request.DisplayName = desireddisplayname;
            /* Use the ApiSettings and AuthenticationContext provided to the function as context for making API calls. */
            var adminApi = new PlayFabAdminInstanceAPI(context.ApiSettings, context.AuthenticationContext);
         
            /* The PlayFabServerAPI SDK methods provide means of making HTTP request to the PlayFab Main Server without any 
             * extra code needed to issue the HTTP requests. */
            return await adminApi.UpdateUserTitleDisplayNameAsync(request);
        }

    [FunctionName("ForgotPassword")]
    public static async Task<dynamic> Run([HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req, ILogger log)
    {
        log.LogInformation($"{nameof(Run)} C# HTTP trigger function processed a request.");
        
        FunctionContext<dynamic> context = JsonConvert.DeserializeObject<FunctionContext<dynamic>>(await req.ReadAsStringAsync());
        dynamic args = context.FunctionArgument; 
        var contactEmail = args["contactEmail"];
        var newPassword = args["newPassword"]; // retrieve the new password sent by the client, specified in ExecuteFunction -> FunctionParameter -> newPassword
        log.LogInformation($"The new password = {newPassword}");
        log.LogInformation($"The contact Email = {contactEmail}");
        //set up title id and secret key for admin api to use 
        var adminApiSettings = new PlayFab.PlayFabApiSettings()
        {
            TitleId = "...",
            DeveloperSecretKey = "...",
        };
        log.LogInformation($"TitleId = {adminApiSettings.TitleId}");
        log.LogInformation($"DeveloperSecretKey = {adminApiSettings.DeveloperSecretKey}");
        var adminAPI = new PlayFab.PlayFabAdminInstanceAPI(adminApiSettings);
        //get the Playfab ID from the contact email
        var userAccountInfoRequest = new LookupUserAccountInfoRequest
        {
            Email = contactEmail,       
        };
        var userAccountInfoDataResponse = await adminAPI.GetUserAccountInfoAsync(userAccountInfoRequest);
        string playfabID = userAccountInfoDataResponse.Result.UserInfo.PlayFabId;
        log.LogInformation($"PlayFabId = {playfabID}");
        //log.LogInformation($"PlayFabId = {context.CallerEntityProfile.Entity.Id}");
        //log.LogInformation($"PlayFabId = {context.CallerEntityProfile.Lineage.MasterPlayerAccountId}");
        //get player's token stored in internal data
        var getUserInternalDataResponse = await adminAPI.GetUserInternalDataAsync(new PlayFab.AdminModels.GetUserDataRequest(){
            PlayFabId = playfabID,
            //PlayFabId = context.CallerEntityProfile.Lineage.MasterPlayerAccountId,
            Keys = new List<string> () {"Token"}
        });
 
        var tokenId = getUserInternalDataResponse.Result.Data["Token"].Value;
        log.LogInformation($"tokenId = {tokenId}");
        //reset the password
        return await adminAPI.ResetPasswordAsync(new PlayFab.AdminModels.ResetPasswordRequest() {
            Password = newPassword,
            Token = tokenId
        });
    }
}
}