TACL Reference Manual

Built-In Functions and Variables
HP NonStop TACL Reference Manual—429513-018
9-344
#SERVER Built-In Function
Table 9-12 lists commands that a TACL process using #REQUESTER and a TACL
process using #SERVER can use to communicate with each other. The decision to use
one-way or two-way communication depends entirely upon how the server responds to
requests.
Table 9-12. Communicating with a TACL Requester
Type of
Communication #Requester #Server
Two-way
communication
Invokes #REQUESTER with
the READ operation to open
the process
(WRITEREAD
operation)
Invokes #APPENDV
prompt^var var (initiates a
WRITEREAD operation)
Invokes #EXTRACTV
prompt^var var (performs a
READUPDATE operation)
Invokes #EXTRACTV
read^var data (retrieves the
response)
Invokes #APPENDV in^var
data (initiates a REPLY
operation)
One-way
communication
Invokes #REQUESTER with
the WRITE option to open the
process
(WRITE operation) Invokes #APPENDV
write^var var (initiates a
WRITE operation)
Invokes #EXTRACTV out^var
data (performs a READ
operation)