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BeachBum
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| Posted: December 17 2011 at 13:09 | IP Logged
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I’m lost as to the way an SSREQUEST executes. It appears if I send a request to one system and want to respond the response is held up until the original request times out. Is there a way to satisfy the ssrequest and not have to wait for it to go away? I can clear the execution queue and problem resolved BUT I’m sure that will create another problem down the line. In simple terms I’m trying to run conversational.
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BeachBum
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| Posted: January 15 2012 at 11:07 | IP Logged
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Interesting tidbit.. If I throw a .5 Wait the other executes immediately. Still don’t understand the workings.
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dhoward
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| Posted: January 16 2012 at 16:54 | IP Logged
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Pete,
I would probably need to see the actual details of how you're trying to setup the conversation. I can foresee a problem where if you make a FORMULA request from PH1 to PH2 and the actual formula contains a ph_ssrequest back to PH1, this probably wouldnt work so well. If this is what you're doing, you would want to POST the ph_ssrequest function back to PH1.
The socket server works very similar to a standard HTTP or web server. The server is listening for connections and when one is initiated, a new socket is spawned. The request is processed and if the request is a FORMULA, the formula is executed (depending upon the formula, this could take awhile). Once the formula is complete, the result is passed back on the open socket and the socket is closed. This is what triggers the end of the ph_ssrequest. Any formula passed in goes to the execution queue so it can be processed.
What I envision is happening, is that on PH1, you're making a ph_ssrequest to PH2 of type FORMULA. PH2 receives the request and places the formula in its execution queue. It probably processes fairly quickly and the formula probably contains a reciprocal ph_ssrequest back to PH1. This call is made and the PH1 SS receives the callback FORMULA. This will go to the end of PH1's execution queue and wont be executed because the PH1 execution queue is still waiting for the original ph_ssrequest to return (which it won't because its waiting for the reciprocal ph_ssrequest to return). By "posting" this ph_ssrequest, the formula is able to be processed without having to wait.
From reading your email, it sounds as if the FORMULA is probably a macro. By placing a "Wait" command in the macro, the macro terminates as soon as the "Wait" is encountered. The formula returns and the PH1 execution queue can continue. After the Wait period expires, the macro is again thrown into the execution queue (on PH2) to continue on with its processing. You've essentially "posted" the remaining macro lines and solved the problem that way. You could essentially place a .01 wait as the first line of the macro and you'll get an immediate return. If the formula return (or at least part of it) is necessary to PH1, you could place those statements at the top of the macro and then the Wait before anything that would cause a hang or is unnecessary to the PH1 return.
Hope this helps,
Dave.
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BeachBum
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| Posted: January 16 2012 at 23:57 | IP Logged
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Dave, you hit the nail on the head. Suspected it was caught up in the queue and the wait broke it up. I use 2 ways of sending the formula across. One is imbedded in a global that is remotely executed and the other uses a ph_postformula. The sending of data imbedded in setGlobals goes seamlessly while execution of formulas go into an 8 second wait. BTW I’m trying to make my remote CC screens interactive without having to do a refresh.
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Topic: SSREQUEST Question
