tcp-blip

Built around the awesome tcp-proxy node package.

Required node packages:

• util
• net
• ip
• tls
• command-node
• tcp-proxy

Description

A binary proxy that can be used to interactively snip the connections of mobile or desktop applications in order to test their reconnect behavior and strategies. Works for:

• tcp/ip socket
• websockets

The proxy has an interactive command line interpreter that supports a few simple commands:

• "help" : list the existing commands
• "list" : list the active client connections. Identifies them as ip and port.
• "kill ip:port" : disconnects a client connection. The ip and port can be obtained using the "list" command.
• Additional commands can be created and added to commands.js. For instance, you might want a command that will cause a lag, etc...

Usage

Installing Prerequisites

-- Install Node/NPM (Fedora based systems)
sudo yum install nodejs npm --enablerepo=epel

-- Install Node packages
npm install ip tcp-proxy command-node

node tcp-blip <Local Port> <Remote Host> <Remote Port>

Example:

Note: You need to hit [Enter] after executing in order for the command prompt to display. Anytime you don't see the command prompt just press enter.

Startup

node tcp-blip 8088 74.152.8.48 8080
tcp-blip-8080> tcp-blip Connection Testing Proxy Started
Accepting connections on port: 8088
---

tcp-blip-8080> 

Client Connects

tcp-blip-8080> 
Client [106.117.63.64:43952] Connected
tcp-blip-8080> 
Client Connected. (tot:1)
tcp-blip-8080> 

The "list" Command

tcp-blip-8080> list
[key "106.117.63.64:43952"]

1 active connection(s)

tcp-blip-8080> 

Kill a Connection

Client [106.117.63.64:43952] Disconnected
tcp-blip-8080> 
Client Disconnected. (tot:0)
tcp-blip-8080>