Hello: I'm not sure if this is related to your problem, but I had a similar incident in the past, and it turned out to be an unchecked buffer in my OnDataAvailable event handler which caused an overflow, which led to the TWSocket component not realizing that the buffer had been emptied and triggering the event again.
Check to make sure that you are not overwriting some data in your event handler due to a buffer overflow. -dZ. >------- Original Message ------- >From : Jake Traynham[mailto:[EMAIL PROTECTED] >Sent : 11/28/2007 4:24:15 PM >To : twsocket@elists.org >Cc : >Subject : RE: [twsocket] ASyncReceive and wsoNoReceiveLoop > >Hello all, I'm using ICS version 6.06 with Turbo C++ Explorer 2006. I had been fighting a problem where my DataAvailable event was being called twice as many times (minus 1) as actually needed. Since I've been using the ICS components for many, many years now, I obviously started looking to see if somehow I was calling ProcessMessages again within the DataAvailable. I couldn't find any where that was true. I finally looked into the TWSocket sources to see where DataAvailable was triggered from and to see if anything there would make it act this way. This is when I saw this wsoNoReceiveLoop thing (which is apparently off by default). Turning that option on made my problem go away. My question is, what am I missing? Either I don't understand why you would *want* ASyncReceive to loop, or maybe I'm not correctly reading in the data? The component I'm working on receives large amounts of data from a server in successive blocks. From what I observed, my DataAvailable event was being called twice minus one more times than it needed to be. For example, if the server sent 6 blocks of data, my DataAvailable event would get called 6 times to receive all of the data, then get called 5 more times. In the 5 extra times, my code would attempt to do a Receive, which would return -1 along with the "Would Block" winsock error. So, it seems that for every time ASyncReceive looped, there would still be a message (FD_Read??) being put in the queue to call it again, which would call my DataAvailable event again, but there wouldn't be any data to read because ASyncReceive had already looped to get all the data. Again, am I missing something here? Should there have only been one FD_Read in the queue initially which would start the ASyncReceive loop but some how the queue is getting corrupted (by some call to ProcessMessages maybe) causing it to respond to the FD_Read more than once. Or should there be an FD_Read for every block of data coming from the server, and if that's the case, why does ASyncReceive loop? Because if there is an FD_Read for every block of data, then ASyncReceive and any DataAvailable events would be called multiple times. Help! :) Jake -- Jake Traynham Owner, CNS Plug-ins http://www.cnsplug-ins.com/ -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
