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CFSocketCallBack

Callback invoked when certain types of activity takes place on a CFSocket object.

Declaration

typealias CFSocketCallBack = (CFSocket?, CFSocketCallBackType, CFData?, UnsafeRawPointer?, UnsafeMutableRawPointer?) -> Void

Parameters

  • s:

    The CFSocket object that experienced some activity.

  • callbackType:

    The type of activity detected.

  • address:

    A CFData object holding the contents of a struct sockaddr appropriate for the protocol family of s (struct sockaddr_in or struct sockaddr_in6, for example), identifying the remote address to which s is connected. This value is NULL except for kCFSocketAcceptCallBack and kCFSocketDataCallBack callbacks.

  • data:

    Data appropriate for the callback type. For a kCFSocketConnectCallBack that failed in the background, it is a pointer to an SInt32 error code; for a kCFSocketAcceptCallBack, it is a pointer to a Cfsocketnativehandle; or for a kCFSocketDataCallBack, it is a CFData object containing the incoming data. In all other cases, it is NULL.

  • info:

    The info member of the Cfsocketcontext structure that was used when creating the CFSocket object.

Discussion

You specify this callback when you create the CFSocket object with CFSocketCreate(_:_:_:_:_:_:_:), CFSocketCreateConnectedToSocketSignature(_:_:_:_:_:_:), CFSocketCreateWithNative(_:_:_:_:_:), or CFSocketCreateWithSocketSignature(_:_:_:_:_:).