ESP8266 Community Forum

Posted: **Thu Mar 30, 2017 4:51 pm**

Is it possible to ever change a WiFiServer listening port after the ESP8266 has started up?

Posted: **Thu Mar 30, 2017 4:59 pm**

Although I've never tried it, I think it is possible.
You would have to add a new setPort() method, and then using code like this one :

Code: Select all

tcpserver.close();
tcpserver.setPort(newport);
tcpserver.begin();

EDIT : If you don't wish to add new setPort() method, it can still be accomplish by using two instances of WiFiServer, one with old port and the other with new port and do the switch like :

Code: Select all

tcpserver1.close();
tcpserver2.begin();

Posted: **Thu Mar 30, 2017 7:59 pm**

These don't work because WiFiServer has to be defined *before* the Setup() routine. So, whatever name you use for the server throughout your app must be the same. I have tried various things like stopping the current server, creating a new one and then assigning the new one to the old name. Nothing seems to work.

Posted: **Fri Mar 31, 2017 7:34 am**

I know that those 2 instances need to be global variable and declared outside setup().
Thus doesn't prevent the code provided to be able to compile.
Did you tried it out ?

ESP8266 Community Forum

Changing server listening port on the fly

Changing server listening port on the fly

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Re: Changing server listening port on the fly

Re: Changing server listening port on the fly