class DEBUGGER__::UI_CDP::WebSocketClient
Public Class Methods
new(s)
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# File debug-1.9.1/lib/debug/server_cdp.rb, line 288 def initialize s @sock = s end
Public Instance Methods
extract_data()
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# File debug-1.9.1/lib/debug/server_cdp.rb, line 345 def extract_data first_group = @sock.getbyte fin = first_group & 0b10000000 != 128 raise 'Unsupported' if fin opcode = first_group & 0b00001111 raise "Unsupported: #{opcode}" unless opcode == 1 second_group = @sock.getbyte mask = second_group & 0b10000000 == 128 raise 'The server must not mask any frames' if mask payload_len = second_group & 0b01111111 # TODO: Support other payload_lengths if payload_len == 126 payload_len = @sock.read(2).unpack('n*')[0] end msg = @sock.read payload_len show_protocol :<, msg JSON.parse msg end
handshake(port, path)
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# File debug-1.9.1/lib/debug/server_cdp.rb, line 292 def handshake port, path key = SecureRandom.hex(11) req = "GET #{path} HTTP/1.1\r\nHost: 127.0.0.1:#{port}\r\nConnection: Upgrade\r\nUpgrade: websocket\r\nSec-WebSocket-Version: 13\r\nSec-WebSocket-Key: #{key}==\r\n\r\n" show_protocol :>, req @sock.print req res = @sock.readpartial 4092 show_protocol :<, res if res.match /^Sec-WebSocket-Accept: (.*)\r\n/ correct_key = Base64.strict_encode64 Digest::SHA1.digest "#{key}==258EAFA5-E914-47DA-95CA-C5AB0DC85B11" raise "The Sec-WebSocket-Accept value: #{$1} is not valid" unless $1 == correct_key else raise "Unknown response: #{res}" end end
send(**msg)
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# File debug-1.9.1/lib/debug/server_cdp.rb, line 308 def send **msg msg = JSON.generate(msg) show_protocol :>, msg frame = Frame.new fin = 0b10000000 opcode = 0b00000001 frame.char fin + opcode mask = 0b10000000 # A client must mask all frames in a WebSocket Protocol. bytesize = msg.bytesize if bytesize < 126 payload_len = bytesize frame.char mask + payload_len elsif bytesize < 2 ** 16 payload_len = 0b01111110 frame.char mask + payload_len frame.uint16 bytesize elsif bytesize < 2 ** 64 payload_len = 0b01111111 frame.char mask + payload_len frame.ulonglong bytesize else raise 'Bytesize is too big.' end masking_key = 4.times.map{ key = rand(1..255) frame.char key key } msg.bytes.each_with_index do |b, i| frame.char(b ^ masking_key[i % 4]) end @sock.print frame.b end