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initial commit very wip
add interception proxy source from ably-js 0288761 wip compile it further compile and run version wip set up eslint used the TUI of `npm init @eslint/config@latest` from https://eslint.org/docs/latest/use/getting-started > Note that some plugins currently do not support ESLint v9 yet. > You may need to use '--force' when installing, or add the following to your package.json: > "overrides": { "eslint": "^9.7.0" } ok, I’ll add that 🤷 add CI workflow a couple of other bits fixing some mypy stuff fix github wip make runnable via npx does this work? manually declaring files so that install over git works oh, and `prepare` is so that install over git works fix dependencies that were incorrectly marked as dev point to correct location for mitmproxy addon move the start script here python linting ruff format
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‎.github/workflows/check.yml

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name: check
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on:
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pull_request:
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push:
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branches:
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- main
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jobs:
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check:
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runs-on: ubuntu-latest
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steps:
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# Set up
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- uses: actions/checkout@v4
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- uses: actions/setup-node@v4
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with:
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node-version: "20" # Oldest LTS at time of writing
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- uses: actions/setup-python@v5
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with:
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python-version: "3.x"
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- run: npm ci
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- run: pip install mitmproxy websockets ruff mypy # TODO I’m not sure what is the right way of doing this
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# Run JS checks
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- run: npm run format:check
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- run: npm run lint:check
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- run: npm run build
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# Run Python checks
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- run: ruff format --check
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- run: ruff check
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- run: mypy

‎.gitignore

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node_modules/
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/dist/
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__pycache__/
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.mypy_cache/

‎.prettierrc

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{}

‎CONTRIBUTING.md

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# Contributing
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TODO

‎COPYRIGHT

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Copyright 2024 Ably Real-time Ltd (ably.com)

‎LICENSE

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Apache License
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8. Limitation of Liability. In no event and under no legal theory,
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‎MAINTAINERS.md

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This repository is owned by the Ably Ecosystems team.

‎README.md

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# Interception Proxy
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TODO

‎bin/generate-mitmproxy-certs

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#!/usr/bin/env bash
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set -e
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if [[ -z $BASH_SOURCE ]]
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then
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echo "This script must be run from a file."
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exit 1
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fi
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# https://mywiki.wooledge.org/BashFAQ/028
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mitmdump -s ${BASH_SOURCE%/*}/../src/python/mitmproxy_addon_generate_certs_and_exit.py

‎bin/interception-proxy

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#!/usr/bin/env node
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// This is the script which will be run when you run this package via `npx`.
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require("../dist/js/server.js");

‎bin/start-service

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#!/usr/bin/env bash
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# Runs the server as a background service, exiting once the server is ready to receive requests.
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#
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# Intended for use in SDKs’ CI jobs. Must be run from the root of this repository.
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set -e
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# We run as the current user so that we can access the generated server certificate (in ~/.mitmproxy) without having to worry about permissions. TODO consider instead generating our own cert and telling mitmproxy to use it, then we also won’t have to have that step where we run mitmproxy once just to generate the certs
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start_systemd_service () {
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systemd_service=$(cat <<SYSTEMD_SERVICE
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[Unit]
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Description=Ably SDK Test Proxy
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[Service]
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WorkingDirectory=$(pwd)
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ExecStart=npx interception-proxy
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User=$USER
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[Install]
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WantedBy=multi-user.target
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SYSTEMD_SERVICE
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)
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# https://stackoverflow.com/questions/84882/sudo-echo-something-etc-privilegedfile-doesnt-work
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echo "${systemd_service}" | sudo tee /etc/systemd/system/ably-sdk-test-proxy.service 1>/dev/null
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echo "Starting ably-sdk-test-proxy systemd service..." 1>&2
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sudo systemctl start ably-sdk-test-proxy.service
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echo "Started ably-sdk-test-proxy systemd service." 1>&2
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}
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start_launchd_daemon () {
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launchd_daemon=$(cat <<LAUNCHD_DAEMON
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>Label</key>
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<string>com.ably.test.proxy</string>
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<key>WorkingDirectory</key>
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<string>$(pwd)</string>
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<key>ProgramArguments</key>
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<array>
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<string>npx</string>
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<string>interception-proxy</string>
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</array>
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<key>RunAtLoad</key>
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<true/>
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</dict>
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</plist>
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LAUNCHD_DAEMON
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)
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# https://stackoverflow.com/questions/84882/sudo-echo-something-etc-privilegedfile-doesnt-work
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echo "${launchd_daemon}" | sudo tee /Library/LaunchDaemons/com.ably.test.proxy.plist
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echo "Loading ably-sdk-test-proxy launchd daemon..." 1>&2
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sudo launchctl load /Library/LaunchDaemons/com.ably.test.proxy.plist
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echo "Loaded ably-sdk-test-proxy launchd daemon." 1>&2
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}
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check_daemon_still_running () {
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if uname | grep Linux 1>/dev/null
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then
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systemctl is-active --quiet ably-sdk-test-proxy.service
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elif uname | grep Darwin 1>/dev/null
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then
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launchctl print system/com.ably.test.proxy 1>/dev/null
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fi
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}
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if uname | grep Linux 1>/dev/null
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then
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start_systemd_service
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elif uname | grep Darwin 1>/dev/null
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then
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start_launchd_daemon
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else
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echo "Unsupported system $(uname); exiting" 1>&2
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exit 1
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fi
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echo "Waiting for sdk-test-proxy server to start on port 8001..." 1>&2
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# https://stackoverflow.com/questions/27599839/how-to-wait-for-an-open-port-with-netcat
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while ! nc -z localhost 8001; do
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# Check that the service hasn’t failed (else we’ll be waiting forever)
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check_daemon_still_running
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sleep 0.5
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done
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echo "sdk-test-proxy server is now listening on port 8001." 1>&2

‎eslint.config.mjs

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import globals from "globals";
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import pluginJs from "@eslint/js";
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import tseslint from "typescript-eslint";
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export default [
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{ files: ["**/*.{js,mjs,cjs,ts}"] },
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{ ignores: ["dist"] },
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{ languageOptions: { globals: globals.node } },
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pluginJs.configs.recommended,
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...tseslint.configs.recommended,
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];

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