.. http:put:: /api/uploads/(uid)/files/(fid)/parts/(pid)
Upload a file (or part of a file) as part of an upload session created with
:http:post:`/api/uploads`.
Use the "pid" and "fid" parameters to specify that the data being uploaded
is for part :math:`M` of file :math:`N`. To upload a file from the client,
specify the "file" parameter. To upload a remote file, specify the "sid"
and "path" parameters with a session id and remote filepath for the file to
upload.
:param uid: Unique upload session identifier.
:type uid: string
:param fid: Zero-based file index of the data to be uploaded.
:type fid: integer
:param pid: Zero-based part index of the data to be uploaded.
:type pid: integer
:requestheader Content-Type: form/multipart
:form file: Local file for upload.
:form path: Remote host absolute filesystem path.
:form sid: Remote session id.
:status 200: The data was uploaded successfully.