question

Hello

There is at least one REST API that returns 404 http code when the arguments point to invalid data: MultiplayerServer/UpdateBuildAlias returns the following, when given an invalid build id:

{
    "code": 404,
    "status": "NotFound",
    "error": "MultiplayerServerNotFound",
    "errorCode": 1385,
    "errorMessage": "MultiplayerServerNotFound - DeploymentNotFound - The deployment with titleId XXX and deploymentId YYY was not found."
}

(I've removed the ID's)

I've got this by using Postman, and here we get to the point of the bug report.

The C# SDK handles the 404 response particularly, see line 79 in https://github.com/PlayFab/CSharpSDK/blob/master/PlayFabSDK/source/PlayFabHttp/PlayFabSysHttp.cs

if (string.IsNullOrEmpty(httpResponseString) || httpResponse.StatusCode == System.Net.HttpStatusCode.NotFound)                {                    error.HttpCode = (int)httpResponse.StatusCode;                    error.HttpStatus = httpResponse.StatusCode.ToString();                    return error;                }

This means that if the API itself returns a 404 it is handled exactly the same as calling an invalid url and the http server returning a 404, and all the error information returned by the API is lost. As a user of the SDK it is not even possible to know which of the two situations happened.

I suggest changing the API to respond with 400. Once because this is what the docs say it should return, and second because 404 has a big chance of causing confusion anyway and possibly need special handling in user code too.

Regards