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#### async_teardown

Start tearing down a `net::ssl::stream`.

##### Synopsis

Defined in header `<boost/beast/websocket/ssl.hpp>`

    template<
        class AsyncStream,
        class TeardownHandler>
    void
    async_teardown(
        role_type role,
        net::ssl::stream< AsyncStream >& stream,
        TeardownHandler&& handler);

##### Description

This begins tearing down a connection asynchronously. The implementation will call the overload of this function based on the `Stream` parameter used to consruct the socket. When `Stream` is a user defined type, and not a `net::ip::tcp::socket` or any `net::ssl::stream`, callers are responsible for providing a suitable overload of this function.

##### Parameters

Name | Description
--- | ---
`role` | The role of the local endpoint
`stream` | The stream to tear down.
`handler` | The completion handler to invoke when the operation completes. The implementation takes ownership of the handler by performing a decay-copy. The equivalent function signature of the handler must be:
    void handler(
        error_code const& error // result of operation
    );
Regardless of whether the asynchronous operation completes immediately or not, the handler will not be invoked from within this function. Invocation of the handler will be performed in a manner equivalent to using `net::post`.

Convenience header `<boost/beast/websocket.hpp>`