module Ohai::Mixin::HttpHelper
Public Instance Methods
can_socket_connect?(addr, port, timeout = 2)
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see if we can socket connect to an address/port
@param addr [String] the address to connect to @param port [Integer] the port to connect to @param timeout [Integer] the seconds before timing out
@return [Boolean] can we connect?
# File lib/ohai/mixin/http_helper.rb, line 30 def can_socket_connect?(addr, port, timeout = 2) t = Socket.new(Socket::Constants::AF_INET, Socket::Constants::SOCK_STREAM, 0) begin saddr = Socket.pack_sockaddr_in(port, addr) rescue SocketError => e # generally means dns resolution error logger.trace("Mixin HttpHelper: can_socket_connect? failed setting up socket connection: #{e}") return false end connected = false begin t.connect_nonblock(saddr) rescue Errno::EINPROGRESS _r, w, _e = IO.select(nil, [t], nil, timeout) if !w.nil? connected = true else begin t.connect_nonblock(saddr) rescue Errno::EISCONN t.close connected = true rescue SystemCallError end end rescue SystemCallError end logger.trace("Mixin HttpHelper: can_socket_connect? == #{connected}") connected end