NCP Response Packet Format
 

REQUEST TYPES: According to Novell, there are seven categories. These categories and their functions include the following: 1111 Create a service connection. 2222 File service request. 3333 File service response. 5555 Destroy a service connection. 7777 Packet Burst. 8888 A private NCP request issued to a process on the same host. 9999 Indicates that the previous requests are still being processed. SEQUENCE NUMBER: Once a connection is established and packets begin to flow, packets are issued numbers in sequential order to indicate their sequence. When a server is finished processing these packets it puts the sequence numbers in the response packets so the client knows that its receipt from the server is correct. CONNECTION NUMBER: This number is used by a file server and the clients that connect to it. Each connecting client has a connection number assigned to it, and, as a result, this number identifies the clients to the server. TASK NUMBER: Multitasking hosts can conceivably have multiple tasks operating at one time. Servers use a task number to associate clients with opened files, so the server may close these files as the clients finish with them. FUNCTION CODE: This number identifies the NCP function required. SERVICE COMPLETION CODE: This field includes a value indicating whether an error occurred during processing. Any value other than 0 indicates that an error of some type occurred. Novell documentation provides additional details concerning this. NCP DATA: This part of the packet includes data from the workstation.