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ConnectionClose.md

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ConnectionClose function

Closes an existing connection.

Syntax

typedef
_IRQL_requires_max_(PASSIVE_LEVEL)
void
(QUIC_API * QUIC_CONNECTION_CLOSE_FN)(
    _In_ _Pre_defensive_ __drv_freesMem(Mem)
        HQUIC Connection
    );

Parameters

Connection

The valid handle to an open connection object.

Remarks

ConnectionClose cleans up and frees all resources allocated for the connection in ConnectionOpen.

A caller should shutdown an active connection via ConnectionShutdown before calling ConnectionClose; calling ConnectionClose without ConnectionShutdown will implicitly call ConnectionShutdown with the QUIC_CONNECTION_SHUTDOWN_FLAG_SILENT flag.

A server application MUST NOT call ConnectionClose within the QUIC_LISTENER_EVENT_NEW_CONNECTION callback when returning failure, to reject a connection. This will result in a double-free in release builds, and an assert in debug builds. It's acceptable to call ConnectionClose within the QUIC_LISTENER_EVENT_NEW_CONNECTION callback if returning QUIC_STATUS_SUCCESS, or QUIC_STATUS_PENDING, since the server application owns the connection object then.

ConnectionClose is the last API call to use a connection handle. An application MUST NOT use a connection handle after calling ConnectionClose! Any calls using a connection handle after calling ConnectionClose is a use-after-free.

See Also

ConnectionOpen
ConnectionShutdown
ConnectionStart