Here's a preview from my zine, Bite Size Networking!! If you want to see more comics like this, sign up for my saturday comics newsletter or browse more comics!
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nc
lets you create TCP (or UDP) connections from the command line
smiling stick figure, to box with smiley face: I hand wrote this HTTP request for you!
nc - l PORT
start a server! this listens on PORT and prints everything received
network connection -> nc -> stdout
nc IP PORT
be a client! opens a TCP connection to IP:PORT (to send UDP use -u)
make HTTP request by hand
printf 'GET / HTTP/ 1.1\r\nHost:example.com\r\n\r\n' | nc example.com 80
type in any weird HTTP request you want! (smiley face)
send files
want to send a 100GB file to someone on the same wifi network? easy!
receiver:
nc-1 8000 > file
sender:
cat file | nc YOUR_IP 8080
happy stick figure with short curly hair: I love this trick It works even if you’re disconnected from the internet!
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