/
tcp_socket.rb
executable file
·70 lines (59 loc) · 1.58 KB
/
tcp_socket.rb
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require 'socket'
require 'timeout'
module Mongo
# Wrapper class for Socket
#
# Emulates TCPSocket with operation and connection timeout
# sans Timeout::timeout
#
class TCPSocket
attr_accessor :pool, :pid
def initialize(host, port, op_timeout=nil, connect_timeout=nil)
@op_timeout = op_timeout
@connect_timeout = connect_timeout
@pid = Process.pid
# TODO: Prefer ipv6 if server is ipv6 enabled
@address = Socket.getaddrinfo(host, nil, Socket::AF_INET).first[3]
@port = port
@socket_address = Socket.pack_sockaddr_in(@port, @address)
@socket = Socket.new(Socket::AF_INET, Socket::SOCK_STREAM, 0)
@socket.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1)
connect
end
def connect
if @connect_timeout
Timeout::timeout(@connect_timeout, OperationTimeout) do
@socket.connect(@socket_address)
end
else
@socket.connect(@socket_address)
end
end
def send(data)
@socket.write(data)
end
def read(maxlen, buffer)
# Block on data to read for @op_timeout seconds
begin
ready = IO.select([@socket], nil, [@socket], @op_timeout)
unless ready
raise OperationTimeout
end
rescue IOError
raise ConnectionFailure
end
# Read data from socket
begin
@socket.sysread(maxlen, buffer)
rescue SystemCallError, IOError => ex
raise ConnectionFailure, ex
end
end
def close
@socket.close
end
def closed?
@socket.closed?
end
end
end