PDL allow double message Delimiter

[Dustin Schreader]

Currently I have a client that is sending XML data without length encoding or standard encapsulation but I figure there should be a way to set the starting delimiter to “ or 0x0A 0x0A.

So far the best option seems to be using a ‘not’ in a variable-array and storing the XML data between the delimiters in a field variable. The problem I have is that it appears the ‘not’ does not accept multiple character delimiters only single so I am only able to use a single linefeed as a delimiter which causes issues because there is a linefeed after each line of XML data.

Please any suggestions on a possible work around. The PDL code I have attempted so far including failed attempts that are comment out are as follows:

Code:

define driver tcpip-erx;
   version: “1.0”;
end driver;

define phrase basic-msg-two;
  “, ) ); */
/*    field data = variable-array( not( ‘‘ ) );*/
/*field chk = fixed-array(2,);*/
/*    ;
   ;*/
 /*  field term = fixed-array(100, begin variable-array(not()); ; end); */
field term = variable-array( not( ‘‘ ) );
;
;
end phrase;

hci_pd_msg_style basic  phrase:basic-msg-two
                       field:term
                       resync:\xb

Topic

[Charlie Bursell]

I assume you are using 5.8 or better

Try the TCP/IP protocol the select Encapsulated -> User

set start to <?

set end to nn

A quick and dirty test on my Windows box seems to work OK

[Dustin Schreader]

We are still using cloverleaf 5.7. We do not have the option in TCP/IP protocol to select the Encapsulated Options.

[Charlie Bursell]

That will be real tough.  PDL was written for the very first version of Cloverleaf and has not changed much since.  There are some things that are hard to do.

I have done some similar things using X.12 where I define a bogus encapsulation statement and let it error.  I then capture the buffer in PDL and get what I want.  Slows things down a bit but not too much.

You also need to consider ACK messages.  Surely you will send ACKs.  You need that for flow control.

Bottom line is I would update if I were you.  Running 5.7is like still running Windows XP.

[Dustin Schreader]

Thank you for the help Charlie. We decided to move the code to Cloverleaf 5.8.

[Author]

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