TCP/IP listener task messages (CBKxx1500-2499)

The following messages are issued by the TCP/IP listener task:

CBKxx1500I
cbkid CICS BAC communication server TCP/IP listener initialization starting.
Explanation:

The communication server cbkid TCP/IP listener subtask initialization is starting. The communication server uses the listener subtask to respond to CICS BAC workstation client requests.

System action:

None.

User response:

None.

Destination:

Console

CBKxx1501I
cbkid CICS BAC no TCP/IP listener port supplied. Using default port.
Explanation:

The communication server cbkid did not find a TCP/IP listener port number specified in its startup parameters. It is using the default port number 55667.

System action:

The TCP/IP listener initialization continues.

User response:

None.

Destination:

Console

CBKxx1502I
cbkid CICS BAC communication server TCP/IP listener initialization port: port
Explanation:

The communication server cbkid has read a TCP/IP port number from its runtime parameters and when the TCP/IP listener initialization is finished, it waits for workstation client requests on TCP/IP port port.

System action:

The TCP/IP listener initialization continues.

User response:

None.

Destination:

Console

CBKxx1503I
cbkid CICS BAC communication server TCP/IP listener initialization complete.
Explanation:

The communication server cbkid TCP/IP listener subtask initialization process is complete and the listener is ready to accept workstation client requests.

System action:

The TCP/IP listener waits for client requests.

User response:

None.

Destination:

Console

CBKxx1504I
cbkid TCP/IP listener client request started: reqtype objtype user pcuser.
Explanation:

The communication server cbkid TCP/IP listener has received a workstation client request and is attempting to process it. The request came from client pcuser and the server is authenticating this user with host user ID user. The requested action reqtype can be one of the following:

The object type objtype being requested can be one of the following:

System action:

The communication server attempts to process the request.

User response:

None.

Destination:

Message log.

CBKxx1505I
cbkid TCP/IP listener client request completed: reqtype objtype user pcuser.
Explanation:

The communication server cbkid TCP/IP listener has finished processing a workstation client request. The values of reqtype and objtype are the same as in message CBKxx1504I.

System action:

None.

User response:

None.

Destination:

Message log.

CBKxx1506E
cbkid TCP/IP listener invalid function code received: func.
Explanation:

The communication server cbkid TCP/IP listener has received a workstation administration client request containing an invalid function code, func.

System action:

The TCP/IP listener discards the notification and continues to listen for CICS BAC workstation client requests.

User response:

Contact Technical Support.

Destination:

Console

CBKxx1507E
cbkid TCP/IP listener invalid client request received: reqtype objtype user pcuser.
Explanation:

The communication server cbkid TCP/IP listener has received a workstation client request from user pcuser authorized as host user user. Either the request type reqtype or the object type objtype is invalid. For a description of reqtype, objtype, user, and pcuser, see message CBKxx1504I.

System action:

The request is not processed.

User response:

Contact Technical Support.

Destination:

Console

CBKxx1508E
cbkid Timeout occurred on client request connection: reqtype objtype user pcuser.
Explanation:

The communication server cbkid TCP/IP listener has timed out a workstation client request because the connection has exceeded the maximum wait time specified in the startup parameters. The request timed out is reqtype objtype user pcuser, the values of which are the same as in message CBKxx1504I.

System action:

The client request terminates. Depending on the type of request, and at what point the request timed out, the request might, or might not, have been completed.

User response:

Determine whether or not the request was completed. If not, reissue the request. You might want to increase the client request timeout value to lessen the likelihood of this occurring. If the problem persists, contact Technical Support.

Destination:

Console

CBKxx1509E
cbkid Error detected on TCP/IP type request. R0(r0) R15(r15).
Explanation:

The communication server cbkid TCP/IP listener received an error condition from the type TCP/IP API function request. Register 0 r0 and register 15 r15 indicate the exact error returned by the API.

System action:

The communication server issues write-to-operator-reply (WTOR) message CBKxx1510R to allow you to direct the listener on how it should proceed.

User response:

Examine the return and reason codes for the API error. Then reply to the WTOR for message CBKxx1510R.

Destination:

Console

CBKxx1510R
cbkid Reply RESET, SHUTDOWN to shut down the listener, or ABEND to abend the communication server.
Explanation:

The communication server cbkid has issued message CBKxx1509R and now requests your response, to indicate how the TCP/IP listener task is to proceed following the API error reported in the CBKxx1509E message.

System action:

The TCP/IP listener task waits for your reply to the WTOR message.

User response:

You can reply RESET, SHUTDOWN, or ABEND, with the following results:

RESET
The communication server TCP/IP listener terminates its current connection and then attempts to re-establish a new one.
SHUTDOWN
The communication server terminates normally.
ABEND
The communication server terminates abnormally. This reply can be useful in obtaining diagnostic information for Technical Support.
Destination:

Console

CBKxx1511I
cbkid RESET reply received. TCP/IP listener will be reset.
Explanation:

The communication server cbkid has accepted a RESET reply in response to message CBKxx1510R.

System action:

The TCP/IP listener attempts to reset its TCP/IP connection.

User response:

None.

Destination:

Console

CBKxx1512W
cbkid SHUTDOWN reply received. The TCP/IP listener will be shut down.
Explanation:

The communication server cbkid has accepted a SHUTDOWN reply in response to message CBKxx1510R.

System action:

The TCP/IP listener attempts to shut down.

User response:

None.

Destination:

Console

CBKxx1513E
cbkid ABEND requested. The TCP/IP listener will be terminated with abend code U1011.
Explanation:

The communication server cbkid has accepted an ABEND reply in response to the message CBKxx1510R.

System action:

The TCP/IP listener terminates with a U1011 abend code.

User response:

None.

Destination:

Console

CBKxx1516E
cbkid TCP/IP listener invalid client object requested: objtype user pcuser.
Explanation:

The communication server cbkid TCP/IP listener has received an invalid object type on a request from a workstation client. The request is from client name pcuser using host user ID user. The invalid object type objtype is rejected because it is not one of the following:

System action:

The communication server discards the request.

User response:

Contact Technical Support.

Destination:

Console

CBKxx1517I
cbkid CICS BAC communication server TCP/IP listener SHUTDOWN complete.
Explanation:

The communication server cbkid TCP/IP listener has shut down in response to a SHUTDOWN request and the server cannot accept any subsequent workstation client requests.

System action:

The communication server no longer accepts client requests because it has no TCP/IP listener.

User response:

None.

Destination:

Console

CBKxx1518W
cbkid TCP/IP listener will be reset due to unrecoverable error.
Explanation:

The communication server cbkid TCP/IP listener has encountered an unrecoverable error and is forcing an internal reset to attempt to clear the error.

System action:

The listener attempts to reset itself to clear the error condition that caused the reset.

User response:

Examine the console for error messages associated with this message. Take the necessary steps to resolve the problem.

Destination:

Console

CBKxx1519E
cbkid TCP/IP listener exceeded forced reset limit. Communication server terminated with abend code U1012.
Explanation:

The communication server cbkid listener, since it was last started, has forced an internal reset more times than is allowed. Because this could be a recursive error, the communication server address space terminates with abend code U1012.

System action:

The communication server address space terminates and produces a dump.

User response:

Determine the nature of the problem and take the necessary steps to resolve it. If you cannot determine the cause of the problem , contact Technical Support.

Destination:

Console

CBKxx1520W
cbkid TCP/IP listener task is not APF authorized. Unable to validate client userids.
Explanation:

The communication server cbkid has detected, during TCP/IP listener initialization, that the TCP/IP subtask is not APF-authorized. The TCP/IP subtask needs to be APF-authorized to enable it to perform MVS™ host user ID validation.

System action:

The TCP/IP listener continues it initialization. However, it is not able to validate the host user ID and password received for each client workstation request it receives.

User response:

Your action depends on whether you want user ID validation on the host for workstation client requests as follows:

Destination:

Console

CBKxx1521W
cbkid Validation of client userid skipped due to lack of APF authorization.
Explanation:

The communication server cbkid has received a workstation client request, but the TCP/IP listener is unable to validate the host user ID and password associated with the request. This is because the TCP/IP listener subtask is not APF-authorized (see message CBKxx1520W issued during TCP/IP initialization).

System action:

The communication server processes the workstation client request without validating the host user ID or password.

User response:

Your action depends on whether you want user ID validation on the host for workstation client requests as follows:

Destination:

Message log.

CBKxx1522W
cbkid Client request rejected. Target CICS region applid did not go through CICS BAC shutdown processing.
Explanation:

The communication server has received a workstation administration client request. The target CICS region is not available, and that CICS BAC did not go through normal termination the last time it was active in the target CICS region. The CICS BAC region properties defined for the target CICS region specify that client requests are to be rejected in this situation.

System action:

The workstation administration client request is rejected.

User response:

Depending on the CICS BAC region properties for the target region, you might have to restart CICS BAC in the region to reset the CICS BAC shutdown flag for the region.

Destination:

Console