lib/net/tcp_client/tcp_client.rb
def socket_connect(socket, address, timeout)
      socket_address = Socket.pack_sockaddr_in(address.port, address.ip_address)

      # Timeout of -1 means wait forever for a connection
      return socket.connect(socket_address) if timeout == -1

      deadline = Time.now.utc + timeout
      begin
        non_blocking(socket, deadline) { socket.connect_nonblock(socket_address) }
      rescue Errno::EISCONN
        # Connection was successful.
      rescue NonBlockingTimeout
        raise ConnectionTimeout.new("Timed out after #{timeout} seconds trying to connect to #{address}")
      rescue SystemCallError, IOError => exception
        message = "#connect Connection failure connecting to '#{address.to_s}': #{exception.class}: #{exception.message}"
        logger.error message if respond_to?(:logger)
        raise ConnectionFailure.new(message, address.to_s, exception)
      end
    end
def socket_connect(socket, address, timeout)
      socket_address = Socket.pack_sockaddr_in(address.port, address.ip_address)

      # Timeout of -1 means wait forever for a connection
      return socket.connect(socket_address) if timeout == -1

      deadline = Time.now.utc + timeout
      begin
        non_blocking(socket, deadline) { socket.connect_nonblock(socket_address) }
      rescue Errno::EISCONN
        # Connection was successful.
      rescue NonBlockingTimeout
        raise ConnectionTimeout.new("Timed out after #{timeout} seconds trying to connect to #{address}")
      rescue SystemCallError, IOError => exception
        message = "#connect Connection failure connecting to '#{address.to_s}': #{exception.class}: #{exception.message}"
        logger.error message if respond_to?(:logger)
        raise ConnectionFailure.new(message, address.to_s, exception)
      end
    end
Connect to server

 Raises Net::TCPClient::ConnectionTimeout when the connection timeout has been exceeded
 Raises Net::TCPClient::ConnectionFailure