Bernese GPS Software Version 5.0 - Bernese GNSS Software

BPE server BPE client
starts the client script
Arguments: server host, port number, PID, and
SUB_PID
sends all details concerning this job
(e.g., script name, campaign, session, ...)
sends the QUIT command
19.3 BPE Components and Environment
spawned at the remote host
opens a TCP/IP connection to the server
Message: ready to perform the task PID/SUB_PID
runs the user script for the session in the campaign:
− Load the Bernese enviroment variables
− Generate a temporary GPSUSER environment in the ${T}−area
− Copy all input files from the option directory into the new environment
− Redefine the variables for the temporary user environment
− Write the header of the protocol file
− Run the user part of the script
− Complete the protocol file
− Remove the directory tree in the temporary user environment
Message: the task PID/SUB_PID has been finished
(successfully or with an error)
closes the TCP/IP connection
exits
Figure 19.2: Communications between BPE server and BPE client.
19.3.3 The Environment of the Client
The environment (i.e., the set of variables that are defined and may be used in various
scripts) of the BPE stems from the standard environment defined in the file
${X}/EXE/LOADGPS.setvar (on Windows systems, this environment is stored in the registry
at installation time under HKCU/Environment). However, in distinction to the standard
environment there are two differences:
(1) many additional variables are defined (see Section 19.6.2), and
(2) the variable ${U} is re-defined by the BPE client in such a way that it points to a
(newly created) client-specific directory.
The environment variables for Bernese GPS Software are handled differently under Windows
and UNIX systems. On a Windows machine all the necessary variables are defined
as system variables. A special variable BERNESE VARIABLES contains a list of those system
variables that are made available for the Bernese GPS Software client scripts. The field
“Client’s environment file” in ”Menu>BPE>Start BPE process” is not used under Windows and may
remain blank. The user may run the BPE server on a Windows computer and send the
BPE clients to remote machines. However, we doubt that this would be a common option
and we assume that under Windows the BPE server and the clients run on the same host.
In that case it is automatically assured that server and clients have the same set of system
variables (see the note in Section 19.6.2 about general variables available in user scripts).
Bernese GPS Software Version 5.0 Page 385