WiFi

setHostname()

WiFi.setHostname, setHostname

Since 0.7.0:

Sets a custom hostname to be used as DHCP client name (DHCP option 12).

Parameters:

  • hostname: the hostname to set (string)
// SYNTAX

WiFi.setHostname("photon-123");

By default the device uses its device ID as hostname.

The hostname is stored in persistent memory. In order to reset the hostname to its default value (device ID) setHostname() needs to be called with hostname argument set to NULL.

// Reset hostname to default value (device ID)
WiFi.setHostname(NULL);
// Both these functions should return the same value.
Serial.println(WiFi.getHostname());
Serial.println(System.deviceID());

Hostname setting is only available on the Photon and P1 (Gen 2). It is not available on the Argon or Ethernet (Gen 3).