ruby/ruby · error · ArgumentError

too many arguments

Error message

too many arguments

What it means

Error "too many arguments" thrown in ruby/ruby.

Source

Thrown at ext/socket/lib/socket.rb:20

require 'socket.so'

class Addrinfo
  # creates an Addrinfo object from the arguments.
  #
  # The arguments are interpreted as similar to self.
  #
  #   Addrinfo.tcp("0.0.0.0", 4649).family_addrinfo("www.ruby-lang.org", 80)
  #   #=> #<Addrinfo: 221.186.184.68:80 TCP (www.ruby-lang.org:80)>
  #
  #   Addrinfo.unix("/tmp/sock").family_addrinfo("/tmp/sock2")
  #   #=> #<Addrinfo: /tmp/sock2 SOCK_STREAM>
  #
  def family_addrinfo(*args)
    if args.empty?
      raise ArgumentError, "no address specified"
    elsif Addrinfo === args.first
      raise ArgumentError, "too many arguments" if args.length != 1
      addrinfo = args.first
      if (self.pfamily != addrinfo.pfamily) ||
         (self.socktype != addrinfo.socktype)
        raise ArgumentError, "Addrinfo type mismatch"
      end
      addrinfo
    elsif self.ip?
      raise ArgumentError, "IP address needs host and port but #{args.length} arguments given" if args.length != 2
      host, port = args
      Addrinfo.getaddrinfo(host, port, self.pfamily, self.socktype, self.protocol)[0]
    elsif self.unix?
      raise ArgumentError, "UNIX socket needs single path argument but #{args.length} arguments given" if args.length != 1
      path, = args
      Addrinfo.unix(path)
    else
      raise ArgumentError, "unexpected family"
    end
  end

View on GitHub (pinned to 0e5b888e1c)

When it happens

Trigger: Thrown at ext/socket/lib/socket.rb:20 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of ruby/ruby@0e5b888e1c (2026-08-21). Data as JSON: /api/errors/39a6c0e203296985. Report an issue: GitHub.