Class: Bonchi::PortPool

Inherits:
Object
  • Object
show all
Defined in:
lib/bonchi/port_pool.rb

Constant Summary collapse

DEFAULT_MIN = 
4000
DEFAULT_MAX = 
5000
UNSAFE_PORTS =

Ports browsers refuse to connect to (Chrome: ERR_UNSAFE_PORT, Firefox: a similar block). Allocating one of these for a dev web server makes it unreachable in the browser even though the server binds fine. This is Chromium’s kRestrictedPorts list (net/base/port_util.cc); ports outside the pool range are harmless to keep listed. 4045 (lockd) and 4190 (sieve) fall inside the default 4000..5000 range.

[
  1, 7, 9, 11, 13, 15, 17, 19, 20, 21, 22, 23, 25, 37, 42, 43, 53, 69, 77,
  79, 87, 95, 101, 102, 103, 104, 109, 110, 111, 113, 115, 117, 119, 123,
  135, 137, 139, 143, 161, 179, 389, 427, 465, 512, 513, 514, 515, 526,
  530, 531, 532, 540, 548, 554, 556, 563, 587, 601, 636, 989, 990, 993,
  995, 1719, 1720, 1723, 2049, 3659, 4045, 4190, 5060, 5061, 6000, 6566,
  6665, 6666, 6667, 6668, 6669, 6697, 10080
].to_set.freeze

Instance Method Summary collapse

Constructor Details

#initialize ⇒ PortPool

Returns a new instance of PortPool.



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# File 'lib/bonchi/port_pool.rb', line 25

def initialize
  @path = GlobalConfig.config_path
  load_config
end

Instance Method Details

#allocate(worktree_path, port_names) ⇒ Object 



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# File 'lib/bonchi/port_pool.rb', line 30

def allocate(worktree_path, port_names)
  prune_stale

  existing = @allocated[worktree_path] || {}
  if port_names.all? { |name| existing[name] }
    port_names.each_with_object({}) do |name, result|
      result[name] = existing[name]
      puts "Reusing port #{existing[name]} for #{name}"
    end
  else
    used = @allocated.reject { |k, _| k == worktree_path }
      .values.flat_map { |ports| ports.values }.to_set

    new_ports = {}
    port_names.each do |name|
      port = (@min..@max).find { |p| !used.include?(p) && !UNSAFE_PORTS.include?(p) && port_available?(p) }
      abort "Error: no available port for #{name}" unless port
      used << port
      new_ports[name] = port
      puts "Allocated port #{port} for #{name}"
    end

    @allocated[worktree_path] = new_ports
    save_config
    new_ports
  end
end