Before Send Upload Data Callback
The callback that is invoked before the upload data is sent to the web server.
The callback can be used to override the upload data before it is sent to the web server.
Use one of the override()
methods to modify the upload data.
Use the proceed method if you do not need to modify the upload data.
If the callback throws an exception, the proceed method will be invoked.
Types
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interface Params
The parameters of the BeforeSendUploadDataCallback.
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interface Response
A response for BeforeSendUploadDataCallback.