HTTP on Ricky

TIL: timeout in Bash scripts

Thu, 12 Jun 2025 09:04:00 +0800

TIL: timeout in Bash scripts
timeout 1m ./until.sh
wrap

timeout 1m bash -c "until curl --silent --fail-with-body 10.0.0.1:8080/health; do
 sleep 1
done"

I use Zip Bombs to Protect my Server

Sat, 03 May 2025 11:24:00 +0800

I use Zip Bombs to Protect my Server
What happens is, they receive the file, read the header that instructs them that it is a compressed file. So they try to decompress the 1MB file to find whatever content they are looking for. But the file expands, and expands, and expands, until they run out of memory and their server crashes. The 1MB file decompresses into a 1GB. This is more than enough to break most bots. However, for those pesky scripts that won’t stop, I serve them the 10MB file. This one decompresses into 10GB and instantly kills the script.

Everyone Needs an HTTP Proxy to Debug

Fri, 25 Apr 2025 16:58:00 +0800

Everyone Needs an HTTP Proxy to Debug

Monitoring HTTP Requests on a Network Interface in Real Time

Thu, 23 Jun 2022 16:48:42 +0800

Monitoring HTTP Requests on a Network Interface in Real Time

tcpflow

apt/dnf install tcpflow

$ sudo tcpflow -p -c -i wlp0s20f3 port 80 | grep -oE '(GET|POST) .* HTTP/1.[01]|Host: .*'
reportfilename: ./report.xml
tcpflow: listening on wlp0s20f3
GET /alexlarsson/flatpak/ubuntu/dists/focal/InRelease HTTP/1.1

GET /mirrors.txt HTTP/1.1

-p disables promiscuous mode
-c means only print the output to the console and don’t create files
-i specifies the network interface grep receives the output of tcpflow
-o means show only the matching parts of the lines that match the pattern
-E means the pattern is an extended regular expression (ERE)

httpry

https://github.com/jbittel/httpry.git

What happens after you type a URL in the browser and press Enter?

Sun, 18 Jul 2021 23:45:45 +0800

What happens after you type a URL in the browser and press Enter?

Representative HTTP Status Codes

Fri, 15 Dec 2017 15:33:14 +0800

Representative HTTP Status Codes