Chapter 5. Interface Configuration
SOCTEST - USER'S GUIDE
In this chapter, it describes about configuration view for interfaces.

On the Interface Configuration view, displays addresses and status for device's interfaces.
And, refreshs configuration contents to the current status.

Displaying address and status

For doing IPv4 communication, the following network interfaces are avairable in iOS.
You can confirm the assigning address to a server socket and the address for broadcast communication.

IPv4 address
Interface index
Interface name
Netmask
Broadcast address
MAC address (Dispalys the dummy address 02:00:00:00:00:00)
Status flags
FQDN (Dispalys only when IPv4 address can be reverse lookuped)

Avairable network interfaces are as below.

Network Interface	Description
Cellular	Connects the Mobile carrier network provided by MNO, starts IPv4 communication. Needs to enable the following settings. [Settings] > [Cellular] > [SocTest], or [Settings] > [SocTest] > [Cellular Data]
Wi-fi	Connects the Wi-Fi network, starts IPv4 communication.
Personal Hotspot	Personal Hotspot feature allows an iOS device to work as a mobile router and connect (relay) other devices to the Cellular network. With using the feature, you can start IPv4 communication between this app and other device on local network (172.20.10.0/28). The IP address of interface is fixed to 172.20.10.1. Needs to enable the following settings. [Settings] > [Privacy] > [Local Network] > [SocTest], or [Settings] > [SocTest] > [Local Network]
Loopback	With using 127.0.0.1 (hostname: localhost), starts IPv4 loopback communication.

Refreshing address and status

With tapping Reload, reloads the device's configuration.
You can confirm the new address when the mobile communication base station is switched due to the movement of your current location or when you connect to Wi-Fi.