The MAXDATALEN option is added to the CREATE TCPIPSERVICE, INQUIRE TCPIPSERVICE and SET TCPIPSERVICE commands:
Also on the CREATE TCPIPSERVICE and INQUIRE TCPIPSERVICE commands, the new option USER, meaning the user-defined protocol, is available on the PROTOCOL attribute.
The new CICS-supplied transaction CWXU, the CICS Web user-defined protocol attach transaction, is the transaction to be specified when the protocol is defined as USER. CWXU executes program DFHWBXN.
On the CREATE TCPIPSERVICE command, note that for the HTTP protocol, 0 should not be specified for the SOCKETCLOSE option, because this setting means that persistent connections cannot be maintained.