GitHub - morkanner/Spying-Socks-Proxy: SOCKS v4 proxy that listens on port 8080 and supporting (exactly) 20 concurrent connections.

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SOCKS v4 proxy that listens on port 8080 and supporting (exactly) 20 concurrent connections.

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Name		Name	Last commit message	Last commit date
Latest commit History 2 Commits
out/production/Spying Socks Proxy		out/production/Spying Socks Proxy
src		src
.gitignore		.gitignore
README		README
Spying Socks Proxy.iml		Spying Socks Proxy.iml

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Application description
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The application starts a SOCKS v4 Proxy, listening on port 8080 and supporting (exactly) 20 concurrent connections.
The program will start the proxy server, which will continue running until it is interrupted by SIGINT signal.
The program will look for passwords passed using HTTP Basic Authentication, only in connections where the destination is with port 80, and the HTTP method is GET.
(The CONNECT command of the SOCKS protocol is only implemented)

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Files description
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* Constants.java - contains all constants that appear in the project.
* ProxyHandler.java - manages the Socks proxy server operations.
* ProxyServerInitiator.java - initializes a Socks proxy server that listens at given port with thread pool.
* Socks4.java - contains the Socks version 4 infrastructure of the proxy server.
* Sockspy.java - contains the main function of the program.
* Utils.java - contains some utilization methods for other methods in the program.

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Design description
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The proxy server must be initialized by a port number, a server socket and a thread pool in order to support
maximum number of concurrent connections. For each client socket that is connected to the server socket of the proxy server,
a ProxyHandler thread runs and handles all proxy server operations.
The class ProxyHandler has a member variable of type Socks4 which is used for supporting the protocol Socks version 4.
Moreover, the classes Constants and Utils (defined above) are used by the classes of the project.

© Mor Kanner - 2019