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#
# Copyright:: 2017, Chef Software, Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
require "socket"
module Ohai
module Mixin
module HttpHelper
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
Ohai::Log.debug("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
Ohai::Log.debug("Mixin HttpHelper: can_socket_connect? == #{connected}")
connected
end
end
end
end
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