Hostname instead of IP Address

[daexpert]

How can I use hostname instead of ip address for the broker? on this line:

#define BROKER_ADDR IPAddress(xxx.com)

I receive the following error if I replace ip with hostname:

/home/paul/snap/arduino/current/Arduino/HA_binary_sensor/HA_binary_sensor.ino: In function 'void setup()':
HA_binary_sensor:5:35: error: 'xxx' was not declared in this scope
#define BROKER_ADDR IPAddress(xxx.com)

[shedokan]

You need to put it as a string(aka. char array):

const char* HA_MQTT_BROKER_ADDR = "homeassistant.local";

And then when you begin() pass it as a string(I have all my parameters as constants:

  haMQTT.begin(HA_MQTT_BROKER_ADDR, HA_MQTT_BROKER_USER, HA_MQTT_BROKER_PASSWORD);