New Post: CreateShellStream: what are implications of the arguments?

1) TerminalName tells the server what type of terminal you want, vt220/xterm/xterm-color...
2) those are necessary for the ssh protocoll to open a shell of your needs
3) buffersize is unused in SSH.NET, no idea why it is there

See http://www.openssh.com/txt/rfc4254.txt for details

6.2.  Requesting a Pseudo-Terminal

   A pseudo-terminal can be allocated for the session by sending the
   following message.

      byte      SSH_MSG_CHANNEL_REQUEST
      uint32    recipient channel
      string    "pty-req"
      boolean   want_reply
      string    TERM environment variable value (e.g., vt100)
      uint32    terminal width, characters (e.g., 80)
      uint32    terminal height, rows (e.g., 24)
      uint32    terminal width, pixels (e.g., 640)
      uint32    terminal height, pixels (e.g., 480)
      string    encoded terminal modes