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# frozen_string_literal: true
# rubocop:todo all
# Copyright (C) 2014-2020 MongoDB Inc.
#
# 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.
module Mongo
class Socket
# Wrapper for TCP sockets.
#
# @since 2.0.0
class TCP < Socket
# Initializes a new TCP socket.
#
# @example Create the TCP socket.
# TCP.new('::1', 27017, 30, Socket::PF_INET)
# TCP.new('127.0.0.1', 27017, 30, Socket::PF_INET)
#
# @param [ String ] host The hostname or IP address.
# @param [ Integer ] port The port number.
# @param [ Float ] timeout The socket timeout value.
# @param [ Integer ] family The socket family.
# @param [ Hash ] options The options.
#
# @option options [ Float ] :connect_timeout Connect timeout.
# @option options [ Address ] :connection_address Address of the
# connection that created this socket.
# @option options [ Integer ] :connection_generation Generation of the
# connection (for non-monitoring connections) that created this socket.
# @option options [ true | false ] :monitor Whether this socket was
# created by a monitoring connection.
#
# @since 2.0.0
# @api private
def initialize(host, port, timeout, family, options = {})
if family.nil?
raise ArgumentError, 'family must be specified'
end
super(timeout, options)
@host, @port = host, port
@family = family
@socket = ::Socket.new(family, SOCK_STREAM, 0)
begin
set_socket_options(@socket)
connect!
rescue
@socket.close
raise
end
end
# @return [ String ] host The host to connect to.
attr_reader :host
# @return [ Integer ] port The port to connect to.
attr_reader :port
# Establishes a socket connection.
#
# @example Connect the socket.
# sock.connect!
#
# @note This method mutates the object by setting the socket
# internally.
#
# @return [ TCP ] The connected socket instance.
#
# @since 2.0.0
# @api private
def connect!
socket.setsockopt(IPPROTO_TCP, TCP_NODELAY, 1)
sockaddr = ::Socket.pack_sockaddr_in(port, host)
connect_timeout = options[:connect_timeout]
map_exceptions do
if connect_timeout && connect_timeout != 0
connect_with_timeout(sockaddr, connect_timeout)
else
connect_without_timeout(sockaddr)
end
end
self
end
# @api private
def connect_without_timeout(sockaddr)
socket.connect(sockaddr)
end
# @api private
def connect_with_timeout(sockaddr, connect_timeout)
if connect_timeout <= 0
raise Error::SocketTimeoutError, "The socket took over #{connect_timeout} seconds to connect"
end
deadline = Utils.monotonic_time + connect_timeout
begin
socket.connect_nonblock(sockaddr)
rescue IO::WaitWritable
select_timeout = deadline - Utils.monotonic_time
if select_timeout <= 0
raise Error::SocketTimeoutError, "The socket took over #{connect_timeout} seconds to connect"
end
if IO.select(nil, [socket], nil, select_timeout)
retry
else
socket.close
raise Error::SocketTimeoutError, "The socket took over #{connect_timeout} seconds to connect"
end
rescue Errno::EISCONN
# Socket is connected, nothing more to do
end
end
private
def human_address
"#{host}:#{port} (no TLS)"
end
end
end
end
|
