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.net socket connection hang

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hednast

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Hai..

I have a problem with Vb.net. I have a system that is collecting data using the socket connection via tcp/ip. No data is downloaded to system although system is still running. All device attached which are still connected does not receive anything from the keypad to the system although it seems to be connected. No data is lost in this period of time as the hardware memory can only take up to approximately 300 records. Only those IPs with the connection down appears and looks like the data shown below.


[27-Jul-05 9:03:34 AM] [192.168.0.82]:: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond Error:
[27-Jul-05 9:03:36 AM] 192.168.0.82: Event 90:Already sent to Oracle
[27-Jul-05 9:03:41 AM] [192.168.0.11]:: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond Error:
[27-Jul-05 9:03:43 AM] 192.168.0.11: Event 90:Already sent to Oracle
[27-Jul-05 9:07:06 AM] [192.168.0.45]:: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond Error:
[27-Jul-05 9:07:09 AM] 192.168.0.45: Event 90:Already sent to Oracle
[27-Jul-05 9:08:49 AM] [192.168.0.62]:: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond Error:


There are IPs from 11 to 85.

Cause:
Unknown – suspect that while running the socket hangs. It is neither close nor open situation.


Anyone has come across this before or anyone has any sample method of how the socket connection should be. I am using PowerTCP socket. All other thread using this socket is running fine. Only the thread that is running continuously without stopping have this problem.

Please asists.

Thank you.
 

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