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| Author | Forum: PowerTCP Winsock for ActiveX Topic: Multiple SEND Events?? |
| rklenotiz From: Rochester, NY USA Posts: 19 Member Since: 08/08/03 |
posted August 12, 2003 12:56 PM Hello, has anyone seen this situation? It appears that I am receiving multiple SEND events in an unusual way. Doesn't happen very often. This is VB6. To trace this out, I added a LIST1 box and simple list1.additem "Entering SEND Event" at the top of the event and list1.additem "Exiting SEND event" as the last line. Normally, I will see one Enter and one Exit message. However, now and then I will see: Entering SEND Event Entering SEND Event Exiting Exiting Of course the control is BLOCKED when the 2nd event fires. Any ideas what causes this and how to remedy?? |
Tony Priest From: Utica, NY USA Posts: 8466 Member Since: 04/11/00 |
posted August 12, 2003 1:00 PM If you are using the send event I would think you were writing a non-blocking program. What are you doing in the send event? Are you calling Send again? If so and the timeout > 0, you would see that. |
| rklenotiz From: Rochester, NY USA Posts: 19 Member Since: 08/08/03 |
posted August 12, 2003 1:06 PM Yes, you are correct, it is a non-blocking program on the server side. Uses daemon to accept connections. This is for a file transfer. When the SEND event fires, I then know to send another block of data...but I don't do that in the event itself. What seems odd is that this works 99% of the time but every now and then I see the 2 SEND events. Timeout is always 0. The event code is very very short...just a few lines of code. |
| Tony Priest From: Utica, NY USA Posts: 8466 Member Since: 04/11/00 |
posted August 12, 2003 1:10 PM It sounds like you must be calling Send again elsewhere while you are still in the Send event. If you want me to investigate further, please provide a way to duplicate the problem. |
| rklenotiz From: Rochester, NY USA Posts: 19 Member Since: 08/08/03 |
posted August 12, 2003 1:10 PM Oops, correction. I indicated I see two EXIT messages.....I do not...I never see the 2nd exit and the control remains blocked until I close the connection. |
| rklenotiz From: Rochester, NY USA Posts: 19 Member Since: 08/08/03 |
posted August 12, 2003 1:11 PM Let me see if I can make a tiny test case and duplicate it..... |
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