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Add the Shared Address Space #106

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Add the Shared Address Space #106

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5 changes: 5 additions & 0 deletions lib/ip.js
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Original file line number Diff line number Diff line change
Expand Up @@ -313,6 +313,11 @@ ip.isPrivate = function(addr) {
/^::$/.test(addr);
};

ip.isShared = function(addr) {
return /^(::f{4}:)?100\.64\.([0-9]{1,3})\.([0-9]{1,3})$/i
.test(addr);
};

ip.isPublic = function(addr) {
return !ip.isPrivate(addr);
};
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10 changes: 10 additions & 0 deletions test/api-test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -293,6 +293,16 @@ describe('IP library for node.js', function() {
});
});

describe('isShared() method', function() {
it('should check if an address is in the shared address space', function() {
assert.equal(ip.isShared('100.64.0.1'), true);
});

it('should not detect 100.* as the shared address space', function() {
assert.equal(ip.isShared('100.6.0.1'), false);
});
});

describe('loopback() method', function() {
describe('undefined', function() {
it('should respond with 127.0.0.1', function() {
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