Forward Proxy

Forward proxy server for HTTP and HTTPS protocols.

Supported Features

• Forward-proxying HTTP data streams.
• Forward-proxying HTTPS data streams.
• Ability to unpack Gzipped data streams.
• Ability to detect and remove Unicode BOM (Byte Order Mark).
• Ability to limit the speed for both HTTP and HTTPS data streams.
• Configurable listen host name and port number.
• Two work modes: public & private.
• White list of IP addresses is supported.
• Usage of interfaces implementing io.Reader interface.
• Pure Golang solution, free and open-source.

Building

Use the build.bat script included with the source code.

Installation

go install github.com/vault-thirteen/Forward-Proxy/cmd/proxy@latest

Startup Parameters

Parameter	Type	Description	Possible Values	Unit	Default Value
-bom	Boolean	Remove BOM from content			true
-gzip	Boolean	Decode GZip content			false
-host	String	Listen host name			"0.0.0.0"
-list	String	Path to a list of IP addresses			""
-loglevel	String	Log level	debug, info, warn, error, fatal, panic, none, disabled		"error"
-mode	String	Work mode	public, private		"public"
-port	Integer	Listen port number			8080
-sl	Boolean	Use speed limiter			true
-slbl	Integer	Speed limiter's burst limit		bytes / sec.	50'000
-slbnr	Float	Speed limiter's maximal burst-to-normal ratio			2.0
-slnl	Float	Speed limiter's normal limit		bytes / sec.	50'000
-tcdt	Integer	Target connection dial timeout		sec.	60

Notes

• To get help, use -h startup parameter.

• List of IP addresses has different usage depending on the work mode:

  • In public mode, list is not used at all;
  • In private mode, list is used as a white list of IP addresses.

• Limiting speed to values lower than 32 KiB/sec. (32'768 Bytes/sec.) is not supported due to restrictions of the io.Copy function built into Go language. This limit may change in future versions of Golang.