blob: 4b755cc7d53f45f409c0300a4c126df8435c598c (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
# frozen_string_literal: true
require "thread"
module ActionCable
module Connection
#--
# This class is heavily based on faye-websocket-ruby
#
# Copyright (c) 2010-2015 James Coglan
class Stream # :nodoc:
def initialize(event_loop, socket)
@event_loop = event_loop
@socket_object = socket
@stream_send = socket.env["stream.send"]
@rack_hijack_io = nil
@write_lock = Mutex.new
@write_head = nil
@write_buffer = Queue.new
end
def each(&callback)
@stream_send ||= callback
end
def close
shutdown
@socket_object.client_gone
end
def shutdown
clean_rack_hijack
end
def write(data)
if @stream_send
return @stream_send.call(data)
end
if @write_lock.try_lock
begin
if @write_head.nil? && @write_buffer.empty?
written = @rack_hijack_io.write_nonblock(data, exception: false)
case written
when :wait_writable
# proceed below
when data.bytesize
return data.bytesize
else
@write_head = data.byteslice(written, data.bytesize)
@event_loop.writes_pending @rack_hijack_io
return data.bytesize
end
end
ensure
@write_lock.unlock
end
end
@write_buffer << data
@event_loop.writes_pending @rack_hijack_io
data.bytesize
rescue EOFError, Errno::ECONNRESET
@socket_object.client_gone
end
def flush_write_buffer
@write_lock.synchronize do
loop do
if @write_head.nil?
return true if @write_buffer.empty?
@write_head = @write_buffer.pop
end
written = @rack_hijack_io.write_nonblock(@write_head, exception: false)
case written
when :wait_writable
return false
when @write_head.bytesize
@write_head = nil
else
@write_head = @write_head.byteslice(written, @write_head.bytesize)
return false
end
end
end
end
def receive(data)
@socket_object.parse(data)
end
def hijack_rack_socket
return unless @socket_object.env["rack.hijack"]
@socket_object.env["rack.hijack"].call
@rack_hijack_io = @socket_object.env["rack.hijack_io"]
@event_loop.attach(@rack_hijack_io, self)
end
private
def clean_rack_hijack
return unless @rack_hijack_io
@event_loop.detach(@rack_hijack_io, self)
@rack_hijack_io = nil
end
end
end
end
|
