Duplicate 0xFF in Socket.Receive(Byte[])???

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Michael R. Nelson - 21 Apr 2008 14:30 GMT

I use Socket.Receive(Byte[]) to receive data in server from client over
TCP/IP. All byte values of 0xFF sent by client are showing up DUPLICATED in
server receive. In other words, if client sends [0xFF, 0x01], then server
receives [0xFF, 0xFF, 0x01]. It's as if bytes having values 0xFF are treated
as some sort of DLE that needs to be repeated to get through. Any idea what's
going on here?

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Peter Duniho - 21 Apr 2008 18:08 GMT

> I use Socket.Receive(Byte[]) to receive data in server from client over
> TCP/IP. All byte values of 0xFF sent by client are showing up DUPLICATED
> in
> server receive.

I am confident that's not actually the case.

> In other words, if client sends [0xFF, 0x01], then server
> receives [0xFF, 0xFF, 0x01]. It's as if bytes having values 0xFF are
> treated
> as some sort of DLE that needs to be repeated to get through. Any idea
> what's
> going on here?

Not without a concise-but-complete code sample that reliably demonstrates
the problem. Note that for network problems, that means both ends of the
communication.

Undoubtedly you have an error either in your sending code or your
receiving code. But what that error is would be impossible to say without
a code example demonstrating the problem.

Pete

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Michael R. Nelson - 21 Apr 2008 20:10 GMT

Turns out a serial to IP bridge device in the loop was performing telnet
translation.

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Duplicate 0xFF in Socket.Receive(Byte[])???

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