private static INuGetResourceCollection GetResourcesImpl(string baseUrl, RequestWrapper request)
{
INuGetResourceCollection res = null;
HttpClient client = request.GetClientWithHeaders();
HttpResponseMessage response = PathUtility.GetHttpResponse(client, baseUrl, (() => request.IsCanceled()),
((msg, num) => request.Verbose(Resources.Messages.RetryingDownload, msg, num)), (msg) => request.Verbose(msg), (msg) => request.Debug(msg));
if (!response.IsSuccessStatusCode)
{
throw new Exception(Resources.Messages.NuGetEndpointDiscoveryFailed);
}
string content = new StreamReader(NuGetClient.DownloadDataToStream(baseUrl, request)).ReadToEnd();
// If the response starts with the magic XML header, it's v2
if (content.StartsWith(Constants.XmlStartContent))
{
res = NuGetResourceCollection2.Make(baseUrl);
}
else
{
try
{
dynamic root = DynamicJsonParser.Parse(content);
string version = root.version;
if (version != null && version.StartsWith("3."))
{
// v3 feed
res = NuGetResourceCollection3.Make(root, baseUrl, request);
}
}
catch (Exception ex)
{
Exception discoveryException = new Exception(Resources.Messages.NuGetEndpointDiscoveryFailed, ex);
throw discoveryException;
}
}
if (res == null)
{
// Couldn't figure out what this is
throw new Exception(Resources.Messages.NuGetEndpointDiscoveryFailed);
}
return(res);
}