cash is a lightweight, zero‑dependency catch‑all HTTP server that accepts any request and immediately shows you everything about it. It’s perfect for debugging webhooks, testing HTTP clients, or inspecting what your app actually sends over the wire. Configure host/port and how request bodies are displayed (text, base64, hex), and view responses as JSON or HTML via the Accept header. Designed for safe local debugging: HTTP only (no TLS), with Docker and docker‑compose support.

Prefer prebuilt binaries? Download for Windows, Linux, and macOS (including ARM64) from Releases: https://github.com/kaans/catch-all-server-http/releases

• Windows (PowerShell): ./catch-all-server-http.exe --help
• Linux/macOS: ./catch-all-server-http --help

Build the executable catch-all-server-http(.exe) yourself (find it in target/release):

cargo build --release

Or run the program directly:

cargo run --release

For help, list all command line parameters:

cargo run --release -- -h

The Dockerfile produces and image that can be used to start a container in which the cash server runs.

Build the image and tag the image as "cash":

docker build -t cash .

Start a container and expose cash on port 8093:

docker run -p 127.0.0.1:8093:8092 cash

Run the container (in the background -d) using docker compose:

docker compose up -d

Send HTTP requests to the cash server's endpoint and cash will list all details about the incoming request.

By default, cash is listening on your localhost on port 8092:

http://localhost:8092

The port and other settings can be configured using cli parameters or environment variables (see Build and run how to get them).

TLS or SSL is not supported because the server is intended for debugging purposes only. Use plain http:// connection only.

By default, the body of the request is being parsed as UTF-8 and displayed as string. In case the body contains bytes which are not parseable as UTF-8, the payload will be displayed as base64 encoded.

The body can be converted to other formats using the BODY_FORMAT environment variable or the --body-format cli argument. Currently, the following formats are supported:

• text
• base64
• hex

The response body can be formatted in different formats using the Accept header. Currently, these formats are supported:

• application/json
• text/html

Set the value of the Accept header to one of these to format the response body in the corresponding format.

Dual-licensed under Apache 2.0 or MIT.