Packet Reading And Writing

[gordond]

How can one read packets from a specific port [i.e. 3270] and then write packets directly to the port?
Is this possible?

The scenario is I currently have a old, old, old 3270 emulator that runs in Internet Explorer as a java app. However there is no scripting options. I want to develop some simple log on and screen scrapping scripts.

TIA

[jeroen79]

Use the winsock control.

[DigiRev]

If you're trying to monitor packets going to/from a port, you'll need to use something like the WinPCap driver. There might be something already done in VB without a driver, but I don't know of any.

You cannot monitor data going to/from ports with the Winsock control unless you're monitoring the data in one of your own client/server programs.

[dilettante]

Just find a scriptable TN3270 client.

This topic has nothing at all to do with "packets," and 3270 Telnet clients do not use "port 3270." Geeze.

[Jean.B]

if your program should work in the same way packet sniffers works, then you would need to use winsock api sockets, there are some articles about that, i remember i ran over some long time ago, try to google!

[the182guy]

Theres a fantastic packet sniffer on PSCode.com it only uses winsock API nothing else, by the way I'm pretty sure its impossible to write packets to a connection that you didnt start in your vb app (even if you monitor the port).