Telnet

Description

Basic socket server. When terminal support is also enabled, allows commands input. Prints debug messages when debug support is enabled.

Recommended clients are nc or nmap-ncat
Will not work in real TELNET mode w/ programms like PuTTY, make sure to use RAW connection and disable things like Telnet line-endings, environment and state control.
By default, telnet server will disallow connections in STA mode!

Build flag	Description	Default value
`DEBUG_TELNET_SUPPORT`	Show debug messages	`1` (on)
`TELNET_AUTHENTICATION`	Require password when connecting	`1` (on)
`TELNET_LINE_BUFFER_SIZE`	Temporary buffer size; when data arrives in multiple pacckets, without a trailing new line	`256`
`TELNET_MAX_CLIENTS`	Maximum amount of simultaniously connected clients	`1`
`TELNET_PORT`		`23`
`TELNET_REVERSE_SUPPORT`	Initiate connection with a remote server using `telnet.reverse` terminal command or MQTT topic	`0` (disabled)
`TELNET_STA`	Allow connections when in STA mode	`0` (off)
`TELNET_SUPPORT`		`1` (enabled)

Key	Description	Possible values	Default value
telnetAuth	Require password when connecting	`0` (no) or `1` (yes)	`1` (yes)
telnetPort			`23`
telnetSTA	Allow connections in STA mode	`0` (no) or `1` (yes)	`0` (no)

If you're looking for support:

Issues: this is the most dynamic channel at the moment, you might find an answer to your question by searching open or closed issues.
Wiki pages: might not be as up-to-date as we all would like (hey, you can also contribute in the documentation!).
Gitter channel: you have better chances to get fast answers from project contributors or other ESPurna users. (also available with any Matrix client!)
Issue a question: as a last resort, you can open new question issue on GitHub. Just remember: the more info you provide the more chances you'll have to get an accurate answer.