A QgsCPLHTTPFetchOverrider utility class was added and used in the OGR provider which redirects GDAL's CPL HTTP calls through QgsBlockingNetworkRequest. This ensures that GDAL can use the QGIS network provider rather than redirecting requests through cURL. Additional head(), put() and deleteResource() methods were added to QgsBlockingNetworkRequest.
This feature was developed by Even Rouault