Using Winsock / TCP Client

31 Jan 2006 2:28 PM

Mark L. Breen

Hello All,

I am using a winsock device to stream printer code to a printer. It works
well enough except one problem you may be able to help with.

When I establish a connection and stream code to the printer, it works
immediately, and the printer prints immediately.

I can stream code to the printer multiple times with no delays. However,
once I close the tcpClient, and re-open it, the printer does not print until
I shut down the VB.Net application.

I have tried multiple different places to close and reopen the tcpClient,
but so far, unless I keep it open for the duration of the application, I
lose the immediate printing until I shut down the application. I guess it
is sitting in a buffer somewhere, but I cannot find it.

Any suggestions?

Thanks in advance for your time.

Mark Breen
Ireland

31 Jan 2006 4:05 PM

Thomas Homan

Mark,

You might be needing to dispose of the tcpClient fully prior opening a new
connection.

I ran into the same thing with a serial datastream. I had to completely
build and release (mySerialConn = nothing) the connection between sessions.
VB otherwise was trying to use objects that were in limbo. Everything would
run fine the first time but fail the second.

Just my $0.02

Tom
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"Mark L. Breen" <mark.breen@nospam-gmail.com.off> wrote in message
news:%230j1hKnJGHA.2628@TK2MSFTNGP15.phx.gbl...
> Hello All,
>
> I am using a winsock device to stream printer code to a printer. It works
> well enough except one problem you may be able to help with.
>
> When I establish a connection and stream code to the printer, it works
> immediately, and the printer prints immediately.
>
> I can stream code to the printer multiple times with no delays. However,
> once I close the tcpClient, and re-open it, the printer does not print
> until I shut down the VB.Net application.
>
> I have tried multiple different places to close and reopen the tcpClient,
> but so far, unless I keep it open for the duration of the application, I
> lose the immediate printing until I shut down the application. I guess it
> is sitting in a buffer somewhere, but I cannot find it.
>
> Any suggestions?
>
> Thanks in advance for your time.
>
>
> Mark Breen
> Ireland
>
>