The starting window size was around 12,500 and each character I type seems to generate a 48 byte packet, so somewhere around 250 characters might fill up a tcp buffer. I could almost understand this is I had, say, entered insert mode and started typing characters while the desktop was hung and I had filled up the window by typing while my desktop was screwed up. A couple minutes before the outage, packets from my desktop arrived with steadily shrinking window sizes until we reached zero and the connection broke a bit later. Recently I was using tcpdump to trace the packets going back and forth, and I captured a trace where my vim session hung and exited. The other windows remain connected and usable. I frequently have multiple Terminal windows open to my desktop at a time, and only the Terminal window where I am using 'vim' will break. (When I say, 'I ssh': I click on a button that tells me it is going to use 'ssh', and a 'Terminal' window opens and logs into my desktop.)įrequently (up to a few times a day) when I'm using 'vim', 'vim' will stop responding, and a minute or two later, the connection to my desktop will break, and Terminal will tell me the connection is broken. I ssh into the linux (ubuntu) desktop I have in my office at work. crappy) wireless home network and connect to work over a VPN. I use a mac os laptop over a typical (i.e.

Quit mac terminal vim