Class: WebSocket::ClientHandshake

Inherits:
Http::Request
  • Object
show all
Defined in:
lib/websocket/client_handshake.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.accept_token_for(websocket_key) ⇒ Object 



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# File 'lib/websocket/client_handshake.rb', line 7

def self.accept_token_for(websocket_key)
  Base64.encode64(Digest::SHA1.digest(websocket_key.strip + GUID)).strip
end

Instance Method Details

#accept_response ⇒ Object 



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# File 'lib/websocket/client_handshake.rb', line 31

def accept_response
  ServerHandshake.new(response_headers)
end

#errors ⇒ Object 



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# File 'lib/websocket/client_handshake.rb', line 11

def errors
  @errors ||= []
end

#response_headers ⇒ Object 



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# File 'lib/websocket/client_handshake.rb', line 35

def response_headers
  websocket_key = headers['Sec-Websocket-Key']
  {
    'Upgrade'    => 'websocket',
    'Connection' => 'Upgrade',
    'Sec-WebSocket-Accept' => ClientHandshake.accept_token_for(websocket_key)
  }
end

#to_data ⇒ Object 



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# File 'lib/websocket/client_handshake.rb', line 44

def to_data
  data = "#{method.to_s.upcase} #{uri.path} HTTP/#{version}#{CRLF}"
  @headers.each do |field, value|
    data << "#{field}: #{value}#{CRLF}"
  end
  data << CRLF
  data
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/websocket/client_handshake.rb', line 15

def valid?
  if headers['Upgrade'].downcase != 'websocket'
    errors << 'Connection upgrade is not for websocket'
    return false
  end

  # Careful: Http gem changes header capitalization,
  # so Sec-WebSocket-Version becomes Sec-Websocket-Version
  if headers['Sec-Websocket-Version'].to_i != PROTOCOL_VERSION
    errors << "Protocol version not supported '#{headers['Sec-Websocket-Version']}'"
    return false
  end

  return true
end