Escape file names in attachment headers #1353
Merged
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When there are non-ascii characters in notebook file name, i.e., "文件名.ipynb", notebooks cannot be properly downloaded via configurable-http-proxy in JupyterHub and an HPE_INVALID_HEADER_TOKEN is reported. After I inspect the headers returned by the notebook, I find that the file name in Content-Disposition header is not escaped, which cause the error in request module of node.js. After escaping the file names, the bug is resolved.