Wireshark · Wireshark-users: [Wireshark-users] Question on Fin/ack

Wireshark-users: [Wireshark-users] Question on Fin/ack

From: "Jamie Crawford" <jamie.d.crawford@xxxxxxxxx>

Date: Mon, 26 Mar 2007 14:24:00 -0500

Hello,

I've got a application that probes a wireless printer to make sure it can communicate over tcp 6101. Once that it sees that it can communicate over that port, it will then send it's print job. But for some reason, the printer hangs up and won't accept any more connections for 60 seconds. Heres what the conversation looks like. Should the server just send a fin,ack to kill the session off? I figured you would first send a fin, and then get a fin,ack back from the printer?

server 29515 -> printer 6101 syn

printer 6101 -> server 29515 syn,ack

server 29515 -> printer 6101 ack

server 29515 -> printer 6101 fin,ack