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This event is fired when HTTP headers are prepared.
Declaration
Parameters
Description
This event is fired when dynamic variants of POST and PUT methods are called to stream the data to the server. The event is called in loop to read the data as they become available for streaming and send the read chunks of data. The handler of the event should block if there's no data available at the moment, but it's expected later. Set Read to 0 to tell the component, that no more data is expected.