Capture is a reverse proxy that takes an incoming HTTP request and sends it to another server, proxying the response back to the client, while showing them in a dashboard.

Running

./capture -url=https://example.com/

Settings

param	description
-url	Required. Set the url you want to proxy
-port	Set the proxy port. Default: 9000
-dashboard	Set the dashboard port. Default: 9001
-captures	Set how many captures to show in the dashboard. Default: 16

Using

If you set your base url as http://example.com/api, now http://localhost:9000 points to that address. Hence, calling http://localhost:9000/users/1 is like calling http://example.com/api/users/1

Capture saves all requests and responses so that you can see them in the dashboard.

Dashboard

To access the dashboard go to http://localhost:9001/

Preview

Building

Manually:

git clone --depth 1 https://github.com/ofabricio/capture.git
cd capture
go build

Via docker:

git clone --depth 1 https://github.com/ofabricio/capture.git
cd capture
docker run --rm -v $PWD:/src -w /src -e GOOS=darwin -e GOARCH=amd64 golang:alpine go build

Now you have an executable binary in your directory.

Note: change GOOS=darwin to linux or windows to create an executable for your corresponding Operating System. For linux, is also needed to change the image tag as well: golang:1.16.

Plugins

Put plugin files in the current directory. They are loaded sorted by filename on startup.

Plugins must export the following function:

func Handler(proxy http.HandlerFunc) http.HandlerFunc {
    return func(w http.ResponseWriter, r *http.Request) {
        proxy(w, r)
    }
}