Attribute Macro milter_callback::on_data

#[on_data]

Generates a callback function of type DataCallback that delegates to the annotated function.

As its sole argument on_data takes an identifier to be used as the name of the generated function.

The on_data callback is called at the start of the message content (before header and body). The signature of the annotated function must be as specified below.

Arguments:

• Context<T> – the callback context

Return type:

• Status – the response status

Examples

use milter::{Context, Status};

#[on_data(data_callback)]
fn handle_data(context: Context<MyData>) -> Status {
    Status::Continue
}