140 lines
3.2 KiB
Plaintext
140 lines
3.2 KiB
Plaintext
DNS Client Application
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Requirements
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------------
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* Ethernet LAN for testing purposes.
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* Galileo Gen 2 Development Board.
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* USB-UART cable: CH340, FTDI 6-pin or equivalent for debugging.
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* dnsmasq application. The dnsmasq version used in this sample is:
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dnsmasq -v
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Dnsmasq version 2.75 Copyright (c) 2000-2015 Simon Kelley
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Building instructions
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---------------------
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* Read src/tcp_config.h, change the IP addresses according to the LAN
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environment.
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* make pristine && make are enough to build this sample.
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* Follow the steps indicated here:
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https://www.zephyrproject.org/doc/board/galileo.html
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to load the binary into the Galileo Dev Board.
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Usage
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-----
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* Open a terminal window and type:
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dnsmasq -d
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* Connect the USB-UART cable to the Galileo. Open a terminal and run:
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screen /dev/ttyUSB0 115200
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* Connect Galileo to the LAN, Turn on the board.
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* The screen terminal window will show:
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-----------------------------------------
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Domain name: not_a_real_domain_name
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[fiber:89] DNS Query: OK, ID: 0
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[fiber:92] TX: OK
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[fiber:97] RX: OK
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[fiber:102] DNS Response: ERROR <- :)
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-----------------------------------------
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Domain name: linuxfoundation.org
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[fiber:89] DNS Query: OK, ID: 1
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[fiber:92] TX: OK
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[fiber:97] RX: OK
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****** DNS ANSWER: 0 ******
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Response: IP address Size: 4: 140 211 169 4
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[fiber:102] DNS Response: OK
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-----------------------------------------
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Domain name: www.linuxfoundation.org
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[fiber:89] DNS Query: OK, ID: 2
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[fiber:92] TX: OK
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[fiber:97] RX: OK
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****** DNS ANSWER: 0 ******
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Response: IP address Size: 4: 140 211 169 4
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[fiber:102] DNS Response: OK
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-----------------------------------------
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Domain name: gnu.org
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[fiber:89] DNS Query: OK, ID: 3
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[fiber:92] TX: OK
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[fiber:97] RX: OK
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****** DNS ANSWER: 0 ******
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Response: IP address Size: 4: 208 118 235 148
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[fiber:102] DNS Response: OK
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-----------------------------------------
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Domain name: www.gnu.org
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[fiber:89] DNS Query: OK, ID: 4
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[fiber:92] TX: OK
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[fiber:97] RX: OK
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****** DNS ANSWER: 0 ******
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Response: CNAME NO IP address
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CNAME: wildebeest.gnu.org
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****** DNS ANSWER: 1 ******
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Response: IP address Size: 4: 208 118 235 148
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[fiber:102] DNS Response: OK
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-----------------------------------------
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Domain name: npr.org
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[fiber:89] DNS Query: OK, ID: 5
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[fiber:92] TX: OK
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[fiber:97] RX: OK
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****** DNS ANSWER: 0 ******
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Response: IP address Size: 4: 216 35 221 76
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[fiber:102] DNS Response: OK
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-----------------------------------------
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Domain name: www.npr.org
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[fiber:89] DNS Query: OK, ID: 6
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[fiber:92] TX: OK
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[fiber:97] RX: OK
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****** DNS ANSWER: 0 ******
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Response: CNAME NO IP address
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CNAME: www-cdn.npr.org.edgesuite.net
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****** DNS ANSWER: 1 ******
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Response: CNAME NO IP address
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CNAME: a1723.g.akamai.net
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****** DNS ANSWER: 2 ******
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Response: IP address Size: 4: 63 80 4 192
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****** DNS ANSWER: 3 ******
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Response: IP address Size: 4: 63 80 4 161
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[fiber:102] DNS Response: OK
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