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  #1  
Old 11-15-2006
frank Zg frank Zg is offline
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Default ppp disconnect takes long time

Windows Standard 9600bps modem was used by DUN client for this connection. The dialup goes smoothly, but it takes quite some time (~20sec) to do a disconnect.
I captured the activities of the COM port during ppp disconnect. Event "IOCTL_SERIAL_WAIT_ON_MASK" delays the process. ANy idea why this happens and how to shorten the process? Thanks
================================================== =======
907 9.99656269 svchost.exe IOCTL_SERIAL_WAIT_ON_MASK AddSerial1 SUCCESS
908 0.00014443 svchost.exe IOCTL_SERIAL_CLR_DTR AddSerial1 SUCCESS

===================================
915 10.00448269 svchost.exe IOCTL_SERIAL_WAIT_ON_MASK AddSerial1 SUCCESS
916 0.00004023 svchost.exe IOCTL_SERIAL_SET_WAIT_MASK AddSerial1 SUCCESS Mask:
917 0.00000419 svchost.exe IOCTL_SERIAL_SET_WAIT_MASK AddSerial1 SUCCESS Mask:
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  #2  
Old 11-15-2006
Jerry K's Avatar
Jerry K Jerry K is offline
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idea Re: ppp disconnect takes long time

you should be able to solve your problem by reading this info on MSDN website:

[url]http://msdn.microsoft.com/library/default.asp?url=/library/en-us/SerPorts_r/hh/SerPorts_r/serref_4879eda6-26ca-48a6-9176-4aa20d46aa47.xml.asp[/url]

[url]http://msdn.microsoft.com/library/default.asp?url=/library/en-us/SerPorts_r/hh/SerPorts_r/serref_8aa3f08e-f48b-44b2-91aa-849890097cef.xml.asp[/url]

Additional info:

[url]http://www.wd-3.com/archive/SerialFilter.htm[/url]

[url]http://www.wd-3.com/archive/SerialAttachedDevices.htm[/url]

[url]http://www.codecomments.com/archive421-2005-11-686078.html[/url]

A nice serial port tool: [url]http://franson.com/serialtools/reference_manual.asp?comp=serial&class=VPort&platf orm=win32[/url]

hope this helps and btw, execellent question.

Last edited by Jerry K : 11-15-2006 at 07:19 PM.
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  #3  
Old 11-17-2006
frank Zg frank Zg is offline
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Default Re: ppp disconnect takes long time

Thanks, Jerry. Now i know the event that delays the process is RLSD. Working towards a solution.
0.00000615 svchost.exe IOCTL_SERIAL_SET_WAIT_MASK AgereModem5 SUCCESS Mask: RLSD
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