net.Server().listen({ port: port }, common.fail);

}, /invalid listen argument/i);

});

// Repeat the tests, passing port as an argument, which validates somewhat

// differently.

net.Server().listen(undefined, close);

net.Server().listen('0', close);

// 'nan', skip, treated as a path, not a port

//'+Infinity', skip, treated as a path, not a port

//'-Infinity' skip, treated as a path, not a port

// 4.x treats these as 0, but 6.x treats them as invalid numbers.

[

-1,

123.456,

0x10000,

1 / 0,

-1 / 0,

].forEach(function(port) {

assert.throws(function() {

net.Server().listen(port, common.fail);

}, /"port" argument must be >= 0 and < 65536/i);

});

// null is treated as 0

net.Server().listen(null, close);

// false/true are converted to 0/1, arguably a bug, but fixing would be

// semver-major. Note that true fails when port 1 low can't be listened on by

// unprivileged processes (Linux) but the listen does succeed on some Windows

// versions.

net.Server().listen(false, close);

(function() {

const done = common.mustCall(function(err) {

if (err)

return assert.strictEqual(err.code, 'EACCES');

assert.strictEqual(this.address().port, 1);

this.close();

});

net.Server().listen(true).on('error', done).on('listening', done);

})();