promise() = OBJ->shake_hands()

See the method of the same name in Net::mbedTLS::Connection. The returned promise resolves (empty) when the handshake is complete.

promise($count) = OBJ->read_any( $OUTPUT_BUFFER )

Like read() in Net::mbedTLS::Connection.

promise() = OBJ->read_all( $OUTPUT_BUFFER )

Like read_any() above but won’t resolve until the entire $OUTPUT_BUFFER has been written to. The returned promise resolves empty.

promise($count) = OBJ->write_any( $OUTPUT_BUFFER )

Writes as much of $OUTPUT_BUFFER as possible. The returned promise resolves with the number of bytes written. (It won’t resolve until at least one byte is written.)

promise() = OBJ->write_all( $OUTPUT_BUFFER )

Like write_any(), but the returned promise won’t resolve until all of $OUTPUT_BUFFER is sent. The returned promise resolves empty.