* Use base64.RawURLEncoding to avoid equal sign
* using the nodejs package they seem to get lost
* Support uploads with unspecified length
* Support uploads with a single named blockid
* without requiring a blockmap
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Signed-off-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>