If extended response support exists at the server, CLI will always send the new parcels defined 'PclBIGKEEPRESP' or 'PclBIGRESP' even when the size of response buffer mentioned by the application is less than 64K.
- Use of 'PclBIGRESP' or 'PclBIGKEEPRESP' parcel is directed by the client to CLI through DBCAREA field 'keep_resp'.
- Initial buffer size that needs to be allocated by CLI for collecting the response messages is directed by the client using DBCAREA field 'resp_buf_len'.
CLI now controls the maximum limit of the response size that can directed by the client to CLI in DBCAREA field 'resp_buf_len ' through DBCAREA field 'maximum_parcel'.
- If 'maximum_parcel' is set to 'O', set 'resp_buf_len' to not more than 32K.
- If 'maximum_parcel' is set to 'H', set 'resp_buf_len' to any value not more than 2**32 if extended response is supported at server.
- If 'maximum_parcel' is set to 'H', set 'resp_buf_len' to not more than 64K if extended response is not supported at server.
If CLI finds that resp_buf_len is set to a value greater than 64K and extended response is not supported at the server, CLI returns an error 302 'BADBUFRQ'.
A new DBCHQEP query item 'QEPIXRS' for the Extended Response is added and has a value of 20. Client utilities can ascertain the support of extended response in the server by using this query item. CLI will return a 'Y' in QEPAREA if extended response is supported at server and a 'N' otherwise.