On the receiver-CIP's side, the reverse transformation is applied, and the message read consists of all bytes up to, but not including, the terminating pattern. The receiver-CIP then processes the request and replies, if necessary, with a MIME message. This reply is also delimited by an SMTP-style message terminator. If the sender-CIP is finished making requests, it may close the connection. An example is given below.
Comments occur in curly-brackets.
The sender-CIP may attempt to retry using version 1 or 2 protocol. Sender-CIP may cache results of this unsuccessful negotiation to avoid later attempts. Allen, et al. 300 Requested CIP version Continue with CIP transaction, in accepted the specified version. 400 Temporarily unable to Retry at a later time.