ESP32-Gateway: TELNET over wired ethernet doesn't receive characters from Putty

[TOTO-G]

Hi,

I want to use a TELNET session over wired ethernet to control my program on an ESP32-Gateway.
I'm using Arduino IDE for programming. Putty on Win10 as Telnet-client.
Sending from ESP32-Gateway to putty works fine, but I can't receive any input from putty in the ESP32-Gateway.

client.available() never triggers on any input from putty.

Is there anyone able to provide a simple TELNET echo-example or loop-back-example? Where all input from putty is written back to the same putty session.

Coding should be anything like this:

char c;
if (client.available()) {
  c = client.read();
  client.write(c);
}

AND any secret in the session preparation phase that client.available() triggers on input from putty.
Please tell me the secret!

[TOTO-G]

Problem was in Putty.
I got a hint from Lub to change configuration of Putty:

Putty Configuration -> Category Terminal -> "Line discipline option" both options to "Force off"

Thanks Lub

[rocade]

Hi
Can you show your code because I'm trying to do the same and I can't make connection
I have reply from putty that

"Connection refused"