Class: Dalli::Socket::TCP

Inherits:
TCPSocket
  • Object
show all
Includes:
InstanceMethods
Defined in:
lib/dalli/socket.rb

Overview

A standard TCP socket between the Dalli client and the Memcached server.

Constant Summary

Constants included from InstanceMethods

InstanceMethods::FILTERED_OUT_OPTIONS, InstanceMethods::WAIT_RCS

Instance Attribute Summary collapse

Class Method Summary collapse

Methods included from InstanceMethods

#append_to_buffer?, #logged_options, #nonblock_timed_out?, #read_available, #readfull

Instance Attribute Details

#options ⇒ Object

options - supports enhanced logging in the case of a timeout



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# File 'lib/dalli/socket.rb', line 89

def options
  @options
end

Class Method Details

.init_socket_options(sock, options) ⇒ Object 



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# File 'lib/dalli/socket.rb', line 111

def self.init_socket_options(sock, options)
  sock.setsockopt(::Socket::IPPROTO_TCP, ::Socket::TCP_NODELAY, true)
  sock.setsockopt(::Socket::SOL_SOCKET, ::Socket::SO_KEEPALIVE, true) if options[:keepalive]
  sock.setsockopt(::Socket::SOL_SOCKET, ::Socket::SO_RCVBUF, options[:rcvbuf]) if options[:rcvbuf]
  sock.setsockopt(::Socket::SOL_SOCKET, ::Socket::SO_SNDBUF, options[:sndbuf]) if options[:sndbuf]

  return unless options[:socket_timeout]

  seconds, fractional = options[:socket_timeout].divmod(1)
  microseconds = fractional * 1_000_000
  timeval = [seconds, microseconds].pack('l_2')

  sock.setsockopt(::Socket::SOL_SOCKET, ::Socket::SO_RCVTIMEO, timeval)
  sock.setsockopt(::Socket::SOL_SOCKET, ::Socket::SO_SNDTIMEO, timeval)
end

.open(host, port, options = {}) ⇒ Object 



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# File 'lib/dalli/socket.rb', line 92

def self.open(host, port, options = {})
  sock = new(host, port, connect_timeout: options[:socket_timeout])
  sock.options = { host: host, port: port }.merge(options)
  init_socket_options(sock, options)

  options[:ssl_context] ? wrapping_ssl_socket(sock, host, options[:ssl_context]) : sock
end

.wrapping_ssl_socket(tcp_socket, host, ssl_context) ⇒ Object 



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# File 'lib/dalli/socket.rb', line 127

def self.wrapping_ssl_socket(tcp_socket, host, ssl_context)
  ssl_socket = Dalli::Socket::SSLSocket.new(tcp_socket, ssl_context)
  ssl_socket.hostname = host
  ssl_socket.sync_close = true
  ssl_socket.connect
  ssl_socket
end