Class: PusherClient::PusherWebSocket

Inherits:
Object
  • Object
show all
Defined in:
lib/pusher-client/websocket.rb

Constant Summary collapse

WAIT_EXCEPTIONS = 
[Errno::EAGAIN, Errno::EWOULDBLOCK]
CA_FILE = 
File.expand_path('../../../certs/cacert.pem', __FILE__)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(url, params = {}) ⇒ PusherWebSocket

Returns a new instance of PusherWebSocket.



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# File 'lib/pusher-client/websocket.rb', line 14

def initialize(url, params = {})
  @hs ||= WebSocket::Handshake::Client.new(:url => url)
  @frame ||= WebSocket::Frame::Incoming::Server.new(:version => @hs.version)
  @socket = TCPSocket.new(@hs.host, @hs.port || 80)
  @cert_file = params[:cert_file]
  @logger = params[:logger] || PusherClient.logger

  if params[:ssl] == true
    ctx = OpenSSL::SSL::SSLContext.new
    if params[:ssl_verify]
      ctx.verify_mode = OpenSSL::SSL::VERIFY_PEER|OpenSSL::SSL::VERIFY_FAIL_IF_NO_PEER_CERT
      # http://curl.haxx.se/ca/cacert.pem
      ctx.ca_file = @cert_file || CA_FILE
    else
      ctx.verify_mode = OpenSSL::SSL::VERIFY_NONE
    end

    ssl_sock = OpenSSL::SSL::SSLSocket.new(@socket, ctx)
    ssl_sock.sync_close = true
    ssl_sock.connect

    @socket = ssl_sock
  end

  @socket.write(@hs.to_s)
  @socket.flush

  loop do
    data = @socket.getc
    next if data.nil?

    @hs << data

    if @hs.finished?
      raise @hs.error.to_s unless @hs.valid?
      @handshaked = true
      break
    end
  end
end

Instance Attribute Details

#socket ⇒ Object

Returns the value of attribute socket.



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# File 'lib/pusher-client/websocket.rb', line 12

def socket
  @socket
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/pusher-client/websocket.rb', line 92

def close
  @socket.close
rescue IOError => error
  logger.debug error.message
end

#receive ⇒ Object 



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# File 'lib/pusher-client/websocket.rb', line 67

def receive
  raise "no handshake!" unless @handshaked

  begin
    data = @socket.read_nonblock(1024)
  rescue *WAIT_EXCEPTIONS
    IO.select([@socket])
    retry
  end
  @frame << data

  messages = []
  while message = @frame.next
    if message.type === :ping
      send(message.data, :pong)
      return messages
    end
    messages << message.to_s
  end
  messages
rescue IOError, Errno::EBADF => error
  logger.debug error.message
  []
end

#send(data, type = :text) ⇒ Object 



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# File 'lib/pusher-client/websocket.rb', line 55

def send(data, type = :text)
  raise "no handshake!" unless @handshaked

  data = WebSocket::Frame::Outgoing::Client.new(
    :version => @hs.version,
    :data => data,
    :type => type
  ).to_s
  @socket.write data
  @socket.flush
end