proxy-verifier

Checks proxies for the following:

• That they work as a proxy
• Which protocol(s) they support (HTTP, HTTPS, SOCKS4, and/or SOCKS5)
• Level of anonymity (transparent, anonymous, or elite)
• Tunneling support (HTTPS over HTTP)

Installation

Add to your application via npm:

npm install proxy-verifier --save

This will install proxy-verifier and add it to your application's package.json file.

How to Use

• testAll
• testProtocol
• testProtocols
• testAnonymityLevel
• testTunnel
• test

testAll

testAll(proxy[, options], cb)

Runs all test methods for the given proxy. The options argument is passed through to every test method.

Usage:

var ProxyVerifier = require('proxy-verifier');

var proxy = {
	ipAddress: '127.0.0.1',
	port: 8888,
	protocol: 'http'
};

ProxyVerifier.testAll(proxy, function(error, result) {

	if (error) {
		// Some unusual error occurred.
	} else {
		// The result object will contain success/error information.
	}
});

Sample result:

{
	anonymityLevel: 'elite',
	protocols: {
		http: {
			ok: true
		}
	},
	tunnel: {
		ok: true
	}
}

testProtocol

testProtocol(proxy[, options], cb)

Check that the proxy works with the specified protocol. The options argument is passed through to the request() method which uses request.

Usage:

var ProxyVerifier = require('proxy-verifier');

var proxy = {
	ipAddress: '127.0.0.1',
	port: 8080,
	protocol: 'http'
};

ProxyVerifier.testProtocol(proxy, function(error, result) {

	if (error) {
		// Some unusual error occurred.
	} else {
		// The result object will contain success/error information.
	}
});

Sample result when the proxy is working:

{
	ok: true
}

Sample result when the proxy is not working:

{
	ok: false,
	error: {
		message: 'socket hang up',
		code: 'ECONNRESET'
	}
}

testProtocols

testProtocols(proxy[, options], cb)

Check that the proxy works with the specified protocols. The options argument is passed through to the request() method which uses request.

Usage:

var ProxyVerifier = require('proxy-verifier');

var proxy = {
	ipAddress: '127.0.0.1',
	port: 8080,
	protocols: ['http', 'https']
};

ProxyVerifier.testProtocols(proxy, function(error, results) {

	if (error) {
		// Some unusual error occurred.
	} else {
		// The results object contains a result object for each protocol.
	}
});

Sample results when the proxy is working for all its protocols:

{
	http: {
		ok: true
	},
	https: {
		ok: true
	}
}

Sample results when the proxy is not working for any of the protocols:

{
	http: {
		ok: false,
		error: {
			message: 'socket hang up',
			code: 'ECONNRESET'
		}
	},
	https: {
		ok: false,
		error: {
			message: 'socket hang up',
			code: 'ECONNRESET'
		}
	}
}

testAnonymityLevel

testAnonymityLevel(proxy[, options], cb)

Check the anonymity level of the proxy. The options argument is passed through to the request() method which uses request.

Usage:

var ProxyVerifier = require('proxy-verifier');

var proxy = {
	ipAddress: '127.0.0.1',
	port: 8080,
	protocol: 'http'
};

ProxyVerifier.testAnonymityLevel(proxy, function(error, anonymityLevel) {

	if (error) {
		// Some unusual error occurred.
	} else {
		// anonymityLevel will be a string equal to "transparent", "anonymous", or "elite".
	}
});

Anonymity levels explained:

• transparent - The proxy does not hide the requester's IP address.
• anonymous - The proxy hides the requester's IP address, but adds headers to the forwarded request that make it clear that the request was made using a proxy.
• elite - The proxy hides the requester's IP address and does not add any proxy-related headers to the request.

testTunnel

testTunnel(proxy[, options], cb)

Check to see if the proxy supports HTTP tunneling. The options argument is passed through to the request() method which uses request.

Usage:

var ProxyVerifier = require('proxy-verifier');

var proxy = {
	ipAddress: '127.0.0.1',
	port: 8888,
	protocol: 'http'
};

ProxyVerifier.testTunnel(proxy, function(error, result) {

	if (error) {
		// Some unusual error occurred.
	} else {
		// The result object will contain success/error information.
	}
});

Sample result when the proxy supports tunneling:

{
	ok: true
}

Sample result when the proxy does not support tunneling:

{
	ok: false,
	error: {
		message: 'socket hang up',
		code: 'ECONNRESET'
	}
}

Test

Use this method to create your custom tests. Example usage:

ProxyVerifier.test(proxy, {
    testUrl: 'https://www.google.com/?q=test',
    testFn: function(data, status, headers) {

        // Check the response data, status, and headers.

        // Throw an error if the test failed.
        throw new Error('Test failed!');

        // Do nothing if the test passed.
    }
}, function(error, results) {
    // Do something with error or results.
});

Contributing

There are a number of ways you can contribute:

• Improve or correct the documentation - All the documentation is in this readme.md file. If you see a mistake, or think something should be clarified or expanded upon, please submit a pull request
• Report a bug - Please review existing issues before submitting a new one; to avoid duplicates. If you can't find an issue that relates to the bug you've found, please create a new one.
• Request a feature - Again, please review the existing issues before posting a feature request. If you can't find an existing one that covers your feature idea, please create a new one.
• Fix a bug - Have a look at the existing issues for the project. If there's a bug in there that you'd like to tackle, please feel free to do so. I would ask that when fixing a bug, that you first create a failing test that proves the bug. Then to fix the bug, make the test pass. This should hopefully ensure that the bug never creeps into the project again. After you've done all that, you can submit a pull request with your changes.

Tests

To run all tests:

grunt test

To run only unit tests:

grunt test:unit

To run only code-style checks:

grunt test:code-style

Changelog

• v0.4.0:
  • test() method to allow for custom tests.
  • Deprecated lookupCountry(), loadCountryData(), and loadCountryDataSync(). These will be removed in a future release. Use geoip-native-lite if you need to check the geo-location for your proxies.
• v0.3.0:
  • Performance improvements for testAll().
  • Changed proxy.ip_address to proxy.ipAddress
  • Added normalizeProxy(proxy) method.
• v0.2.0:
  • Renamed all to testAll. all method now prints a deprecated warning.
  • Renamed protocol to testProtocol. protocol method now prints a deprecated warning.
  • Renamed protocols to testProtocols. protocols method now prints a deprecated warning.
  • Renamed anonymityLevel to testAnonymityLevel. anonymityLevel method now prints a deprecated warning.
  • Renamed tunnel to testTunnel. tunnel method now prints a deprecated warning.
  • Renamed country to lookupCountry. country method now prints a deprecated warning.