Checks if an HTTP proxy is open. False positive are avoided verifying the HTTP return code and matching a pattern. The CONNECT method is verified only the return code. HTTP headers are shown regarding the use of proxy or load balancer.
To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':
Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.
– Jim O’Gorman | President, Offensive Security