The server MUST first follow the steps specified in section 220.127.116.11. Also, the server
MUST verify that the LinkViewerToMacCancelReadBlock
message adheres to the syntax specified in section 18.104.22.168.
If the server is currently sending Data packets that contain
the ASF file header, it
MUST discard any such Data packets that have not yet been sent.
The server MUST then wait for either a
LinkViewerToMacCancelReadBlock message or a LinkViewerToMacCloseFile
message or a LinkViewerToMacReadBlock
message to be received from the client.
How to process a LinkViewerToMacCancelReadBlock message is
specified in section 22.214.171.124. How to process a LinkViewerToMacCloseFile message
is specified in section 126.96.36.199.
LinkViewerToMacReadBlock message processing is specified in section 188.8.131.52.