public async Task GetAzDevDeploymentType()

in CredentialProvider.Microsoft/CredentialProviders/Vsts/IAuthUtil.cs [88:107]


        public async Task<AzDevDeploymentType> GetAzDevDeploymentType(Uri uri)
        {
            // Ping the url to see from headers whether it's an Azure Artifacts feed or external
            var responseHeaders = await GetResponseHeadersAsync(uri, cancellationToken: default);

            // Hosted only allows https
            if (IsHttpsScheme(uri) && responseHeaders.Contains(VssResourceTenant) && responseHeaders.Contains(VssAuthorizationEndpoint))
            {
                return AzDevDeploymentType.Hosted;
            }

            // If not hosted and has E2EID, assume on prem.
            if (responseHeaders.Contains(VssE2EID))
            {
                return AzDevDeploymentType.OnPrem;
            }

            // Assume uri is from an external source if expected headers aren't present.
            return AzDevDeploymentType.External;
        }