PNET_REMOTE - Evaluation of matlab expression in remote host PNET
Version: First includes in the tcp/udp/ip toolbox 2002-02-13 (C) 2002 Peter Rydesaeter, GNU Public License This function uses PNET for nonblocking remote controll of other matlab session on this or other hosts. This function implements different client and server calls in same function. By setting the server matlab session in server mode with "PNET\_REMOTE SERVER ..." its possible to connect to it from other hosts and matlab sessions with "PNET\_REMOTE con EVAL ..." or exchange data with PUT or GET options. This remote controll package uses its own (non standard) protocol over a TCP/IP connection. Optional parameters are enclosed in [ ] in follwing syntax description.
pnet_remote(‘server’,[ port ])
Starts to listen on specified port (is by default 5678) for a connection and starts to serv for EVAL, PUT, GET... commands sent from remotehost. It listens for a connection, servers it until it closes and then starts to listens for a new connection to serv.
Like the last but it starts to serv on an already estabished connection until it is closed by the remote host. CON needs to be closed afterwards.
con=pnet_remote(‘connect’,[‘host’,[ port ] ])
Connects and returns a connection handler to a "PNET\_REMOTE SERVER" at specified HOST and PORT. Default value for host is 'localhost' and for port 5678. A connection an also be established with PNET('TCPCONNECT',...).
Sends a close command to remote host and closes the connection. PNET(con,'CLOSE') should also work even if it is not sending the close command.
Exactly the same as PNET('CLOSEALL')
Non blocking evaluation of expression on remote host. The expression is evaluated in callers namespace. The expression is a regular matlab expression evaualted with EVALIN. This command is NONBLOCKING and status of the evaluation can be detected with PNET\_REMOTE(con,'STATUS')
Returns evaluation status of a remote host/session. The returned value is a string containing 'busy' 'error' or 'ready' depending on status of evaluation. during evaluation 'busy' is returned, then 'error' or 'ready' is returened depending on if EVALIN succeded.
Uploads variables to remote hosts evaulation workspace. Its specified as a list of pairs of 'NAME' and EXPR where 'NAME' is the new name of the uploaded variable in the remote workspace and EXPR is a local variabel or expression.
Gets specified variables from remote workspace. Actually can 'name..' be any expression that is remote evaluated \_but\_ this command blocks until the result of the remotely evaluted expression/variable is recived.
Uploads local scripts to the remote host. The scripts are put on the remote hosts search path in a directory named PNET\_PUTSCRIPTS. 'scriptname...' is the name used at calls. WHICH is used to detect full path and extention of the script. If the remote hosts platform/OS is different then the full extention on MEX files must be specified.
Sends a break comand to the script running on the remote host. This break comand can only be detected if the remote host repeatedly calls PNET\_REMOTE('GET\_BREAK') which will cause an error in the remote script.
Used to be repeatedly called in scripts on the remote host. On a recived BREAK or disconected connection an error will be generated that break the running script.
General alternative syntax(es):
pnet\_remote server port This is the same as the functional form PNET\_REMOTE('SERVER',port) Numbers like connection handlers and port-numbers can be specified as strings in most cases. This syntax should generaly work for all variants of calls. con\_array=[con1 con2 con3 .....] pnet\_remote(con\_array,.........) You can specify the conection handler as an array of connections and same operation will be performed for all connections. This syntax should generaly work for all variants of calls \_IF\_ they do not return anything.
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