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BITS Response Packets

The following table lists the response packets sent to the BITS client for upload and upload-reply jobs. The table lists the packets in the typical sequence they are sent to the client.

Response packet Purpose
Ack for Ping Acknowledges the Ping request.
Ack for Create-Session Acknowledges the Create-Session request and returns a session identifier that the BITS client uses on all subsequent requests to identify this file transfer session.
Ack for Fragment Acknowledges the Fragment request and writes the fragment to the upload file on the server.
Ack for Close-Session Acknowledges the Close-Session request and releases all resources associated with the session.
Ack for Cancel-Session Acknowledges the Cancel-Session request and releases all resources associated with the session.