> before HTTP got it right In the spec, yes. But since servers use Content-Encoding instead of Transfer-Encoding for on-the-fly compression, its unspecified no

> before HTTP got it right In the spec, yes. But since servers use Content-Encoding instead of Transfer-Encoding for on-the-fly compression, its unspecified now whether the byte offsets in the resumption refer to the compressed or uncompressed file. Result: Download resumption did not work reliably and got removed from browsers.