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Cleanly closes the connection to the server.
template<
class CompletionToken = with_diagnostics_t
<asio::deferred_t>>
auto
async_close(
CompletionToken&& token = {});
This function does the following:
this->uses_ssl() == true
), performs the TLS shutdown.
Since this function involves writing a message to the server, it can fail. Only use this function if you know that the connection is healthy and you want to cleanly close it.
If you don't call this function, the destructor or successive connects will perform a transport-layer close. This doesn't cause any resource leaks, but may cause warnings to be written to the server logs.
The handler signature for this operation is void(boost::mysql::error_code)
.
Intermediate completion handlers, as well as the final handler, are executed
using token
's associated
executor, or this->get_executor()
if the token doesn't have an associated executor.
If the final handler has an associated immediate executor, and the operation
completes immediately, the final handler is dispatched to it. Otherwise,
the final handler is called as if it was submitted using asio::post
, and is never be called inline
from within this function.