crapify is a proxy for simulating slow, spotty, HTTP connections. It allows you to vary:

• the upload and download speed of requests.
• the maximum number of concurrent outbound HTTP connections.
• the number of bytes dropped during transfers.

Contribute to Crapify on GitHub

• npm install crapify -g
• crapify start --port=5000 --speed=3000 --concurrency=2, where:
  • port is the port crapify should start on.
  • speed is the connection speed in bytes/second.
  • concurrency is the number of concurrent outbound connections allowed.
  • drop-frequency is how often bytes should be dropped (byte count % drop frequency).

npm config set proxy http://127.0.0.1:5000

curl -v --proxy http://127.0.0.1:5000 https://www.google.com

1. Go to system preferences.
2. Click on Network.
3. Click on Advanced.
4. Click on Proxies.
5. Enable an http, and an https proxy, with 127.0.0.1, and :5000, respectively.

• tylertreat/Comcast, a Go frontend that simulates terrible network connections by directly modifying settings for your network interfaces.