Hi,
I've just recieved one of these devices
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from Lantronix. Its basically a little 186 processor plus serial port running a tcp/ip stack, webserver, etc all housed in a RJ45 connector. It was quite easy to read data in from the serial port and send it out the ethernet port and vice verca. As far as I can tell you can't actually modify the code on the device, you just configure it through the web server.
My problem is that I can't seem to set the device up as a client and server at the same time. This is because it only seems to allow you to use one local tcp/ip port. So you can either use it for an incoming or outgoing connection. All other tcp/ip stacks that Ive seem, you can set the local port to 0 and the stack allocates a port (client).
Has anybody else used this device? Is it correct that you can have 2 sockets open at the same time? If they would allow you to modify the code and have access to the tcp/ip stack API it would be great...