UploadStream.resumable

Creates a new resumable UploadStream, allowing a file to be uploaded from a GData service using standard OutputStream API.

The upload will use GData's resumable upload API, so should be more reliable than a normal upload (especially if the file is large). See the GData documentation on resumable uploads for more information.

The HTTP method to use should be specified in method, and will typically be either SOUP_METHOD_POST (for insertions) or SOUP_METHOD_PUT (for updates), according to the server and the upload_uri.

If entry is specified, it will be attached to the upload as the entry to which the file being uploaded belongs. Otherwise, just the file written to the stream will be uploaded, and given a default entry as determined by the server.

slug, content_type and content_length must be specified before the upload begins, as they describe the file being streamed. slug is the filename given to the file, which will typically be stored on the server and made available when downloading the file again. content_type must be the correct content type for the file, and should be in the service's list of acceptable content types. content_length must be the size of the file being uploaded (not including the XML for any associated Entry) in bytes. Zero is accepted if a metadata-only upload is being performed.

As well as the standard GIO errors, calls to the OutputStream API on a UploadStream can also return any relevant specific error from ServiceError, or PROTOCOL_ERROR in the general case.

If a Cancellable is provided in cancellable, the upload operation may be cancelled at any time from another thread using cancel. In this case, any ongoing network activity will be stopped, and any pending or future calls to OutputStream API on the UploadStream will return CANCELLED. Note that the Cancellable objects which can be passed to individual OutputStream operations will not cancel the upload operation proper if cancelled — they will merely cancel that API call. The only way to cancel the upload operation completely is using this cancellable .

Note that network communication won't begin until the first call to write on the UploadStream.

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