It's a simple Ruby gem to get a random TCP port.
First, install it:
$ gem install random-port
Then, use it like this, to reserve a random TCP port:
require 'random-port' port = RandomPort::Pool.new.acquire
Pool guarantees that the port won't be used again. You can put
the port back to the pool after usage:
RandomPort::Pool.new.acquire do |port| # Use the TCP port. It will be returned back # to the pool afterwards. end
You can do it without the block:
pool = RandomPort::Pool.new port = pool.acquire pool.release(port)
You can also use a pre-defined
RandomPort::Pool::SINGLETON.acquire do |port| # Use it here... end
The pool is thread-safe by default.
You can configure it to be
not-thread-safe, using optional
sync argument of the constructor.
How to contribute
$ bundle update $ rake
If it's clean and you don't see any error messages, submit your pull request.
(The MIT License)
Copyright (c) 2018 Yegor Bugayenko
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.