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readme: update and reword slightly

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Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
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Thomas Lamprecht 2023-09-29 10:07:17 +02:00
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@ -1,15 +1,19 @@
xterm.js webclient and helper utility
=====================================
This repository contains the client and helper utility to use
xterm.js (https://xtermjs.org) for Proxmox VE.
This repository contains the client and helper utility to use xterm.js [0] in
the web UI of Proxmox projects like Proxmox VE, Proxmox Mail Gateway or Proxmox
Backup Server.
To be able to relay between the gui and a shell program/console,
we need a tool (called termproxy) to open a port (where our websocketproxy
connects to) and to open a pty and execute a program
[0]: https://xtermjs.org
From Client to Server it implements a simple packet-based protocol:
(everything is a string)
To be able to relay between the frontend and a shell program/console running in
the backend, we provide a tool called termproxy to open a port (where our
websocketproxy connects to) and to open a PTY and execute a program.
For communication originating from the client towards the server, it implements
a simple packet-based protocol where everything is a string. The protocol
consists of the following messages:
* Normal Message
0:LENGTH:MSG
@ -17,16 +21,15 @@ From Client to Server it implements a simple packet-based protocol:
* Resize Message
1:COLS:ROWS:
where COLS is the number of columns the client wants to resize to,
and ROWS the number of rows, respectively
where COLS is the number of columns the client wants to resize to, and ROWS
the number of rows, respectively
* Ping Message
2
used to keep the connection between client and server alive
(we have a timeout of 5 minutes)
every other input from the client will be ignored
From server to client, the data will simply sent, without any
format
Every other input from the client will be ignored.
Communication from server to the client uses no protocol, the raw data coming
from the terminal/program will be forwarded 1:1, without any wrapping format.