| DNS Client Application |
| |
| Requirements |
| ------------ |
| |
| * Ethernet LAN for testing purposes. |
| |
| * Galileo Gen 2 Development Board. |
| |
| * USB-UART cable: CH340, FTDI 6-pin or equivalent for debugging. |
| |
| * dnsmasq application. The dnsmasq version used in this sample is: |
| |
| dnsmasq -v |
| Dnsmasq version 2.75 Copyright (c) 2000-2015 Simon Kelley |
| |
| Building instructions |
| --------------------- |
| |
| * Read src/main.c, change the IP addresses according to the LAN |
| environment. |
| |
| * make pristine && make are enough to build this sample. |
| |
| * Follow the steps indicated here: |
| |
| https://www.zephyrproject.org/doc/board/galileo.html |
| |
| to load the binary into the Galileo Dev Board. |
| |
| |
| Usage |
| ----- |
| |
| * Open a terminal window and type: |
| |
| dnsmasq -d |
| |
| * Connect the USB-UART cable to the Galileo. Open a terminal and run: |
| |
| screen /dev/ttyUSB0 115200 |
| |
| * Connect Galileo to the LAN, Turn on the board. |
| |
| * The screen terminal window will show: |
| |
| WARNING: no console will be available to OS |
| error: no suitable video mode found. |
| |
| ----------------------------------------- |
| Domain name: not_a_real_domain_name |
| [fiber:82] DNS Create Query: 0, ID: 1 |
| [fiber:85] TX: 0 |
| [fiber:88] RX: -5 |
| |
| ----------------------------------------- |
| Domain name: oops! |
| [fiber:82] DNS Create Query: 0, ID: 2 |
| [fiber:85] TX: 0 |
| [fiber:88] RX: 0 |
| [fiber:95] DNS response: 2 |
| |
| ----------------------------------------- |
| Domain name: zephyrproject.org |
| [fiber:82] DNS Create Query: 0, ID: 3 |
| [fiber:85] TX: 0 |
| [fiber:88] RX: 0 |
| |
| ****** DNS ANSWER: 0 ****** |
| Response: IP address Size: 4: 140 211 169 8 |
| [fiber:95] DNS response: 0 |
| |
| ----------------------------------------- |
| Domain name: www.google.com |
| [fiber:82] DNS Create Query: 0, ID: 4 |
| [fiber:85] TX: 0 |
| [fiber:88] RX: 0 |
| |
| ****** DNS ANSWER: 0 ****** |
| Response: IP address Size: 4: 216 58 192 4 |
| [fiber:95] DNS response: 0 |
| |
| ----------------------------------------- |
| Domain name: mail.yahoo.com |
| [fiber:82] DNS Create Query: 0, ID: 5 |
| [fiber:85] TX: 0 |
| [fiber:88] RX: 0 |
| |
| ****** DNS ANSWER: 0 ****** |
| Response: CNAME NO IP address Size: 8: 5 108 111 103 105 110 192 17 |
| CNAME: login.yahoo.com |
| |
| ****** DNS ANSWER: 1 ****** |
| Response: CNAME NO IP address Size: 35: 9 102 111 45 100 115 45 97 116 115 6 109 101 109 98 101 114 3 103 48 50 8 121 97 104 111 111 100 110 115 3 110 101 116 0 |
| CNAME: fo-ds-ats.member.g02.yahoodns.net |
| |
| ****** DNS ANSWER: 2 ****** |
| Response: IP address Size: 4: 98 136 189 41 |
| [fiber:95] DNS response: 0 |
| |
| ----------------------------------------- |
| Bye! |
