module ModBus::TCP
Attributes
ipaddr[R]
port[R]
Public Instance Methods
open_tcp_connection(ipaddr, port, opts = {})
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Open TCP
socket
@param [String] ipaddr IP address of remote server @param [Integer] port connection port @param [Hash] opts options of connection @option opts [Float, Integer] :connect_timeout seconds timeout for open socket @return [Socket] socket
@raise [ModBusTimeout] timed out attempting to create connection
# File lib/rmodbus/tcp.rb, line 16 def open_tcp_connection(ipaddr, port, opts = {}) @ipaddr, @port = ipaddr, port timeout = opts[:connect_timeout] ||= 1 io = nil begin io = Socket.tcp(@ipaddr, @port, nil, nil, connect_timeout: timeout) rescue Errno::ECONNREFUSED, Errno::ETIMEDOUT raise ModBusTimeout.new, 'Timed out attempting to create connection' end io end