[issue33118] No clean way to get notified when a Transport's write buffer empties out

[Vitaly Kruglikov]

Vitaly Kruglikov <vitaly.krug at gmail.com> added the comment:

I'll have to settle for `set_write_buffer_limits(0, 0)` for my blocking wrapper case.

I think that 'write_buffer_drained' callback is a good idea, though.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33118>
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