Module: Async::HTTP::Protocol::HTTP2::Connection

Included in:
Client, Server
Defined in:
lib/async/http/protocol/http2/connection.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#count ⇒ Object (readonly)

Returns the value of attribute count.



108
109
110
 
# File 'lib/async/http/protocol/http2/connection.rb', line 108

def count
  @count
end

#promises ⇒ Object (readonly)

Returns the value of attribute promises.



102
103
104
 
# File 'lib/async/http/protocol/http2/connection.rb', line 102

def promises
  @promises
end

#stream ⇒ Object (readonly)

Returns the value of attribute stream.



52
53
54
 
# File 'lib/async/http/protocol/http2/connection.rb', line 52

def stream
  @stream
end

Instance Method Details

#close(error = nil) ⇒ Object 



66
67
68
69
70
 
# File 'lib/async/http/protocol/http2/connection.rb', line 66

def close(error = nil)
  @reader = nil
  
  super
end

#connected? ⇒ Boolean

Can we use this connection to make requests?

Returns:

  • (Boolean) 


115
116
117
 
# File 'lib/async/http/protocol/http2/connection.rb', line 115

def connected?
  @stream.connected?
end

#http1? ⇒ Boolean

Returns:

  • (Boolean) 


54
55
56
 
# File 'lib/async/http/protocol/http2/connection.rb', line 54

def http1?
  false
end

#http2? ⇒ Boolean

Returns:

  • (Boolean) 


58
59
60
 
# File 'lib/async/http/protocol/http2/connection.rb', line 58

def http2?
  true
end

#initialize ⇒ Object 



42
43
44
45
46
47
48
49
50
 
# File 'lib/async/http/protocol/http2/connection.rb', line 42

def initialize(*)
  super
  
  @count = 0
  @reader = nil
  
  # Writing multiple frames at the same time can cause odd problems if frames are only partially written. So we use a semaphore to ensure frames are written in their entirety.
  @write_frame_guard = Async::Semaphore.new(1)
end

#multiplex ⇒ Object 



110
111
112
 
# File 'lib/async/http/protocol/http2/connection.rb', line 110

def multiplex
  self.maximum_concurrent_streams
end

#peer ⇒ Object 



104
105
106
 
# File 'lib/async/http/protocol/http2/connection.rb', line 104

def peer
  @stream.io
end

#read_in_background(task: Task.current) ⇒ Object 



85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
 
# File 'lib/async/http/protocol/http2/connection.rb', line 85

def read_in_background(task: Task.current)
  task.async do |nested_task|
    nested_task.annotate("#{version} reading data for #{self.class}")
    
    begin
      while !self.closed?
        self.consume_window
        self.read_frame
      end
    rescue EOFError, Errno::ECONNRESET, Errno::EPIPE, Async::Wrapper::Cancelled
      # Ignore.
    ensure
      close($!)
    end
  end
end

#reusable? ⇒ Boolean

Returns:

  • (Boolean) 


119
120
121
 
# File 'lib/async/http/protocol/http2/connection.rb', line 119

def reusable?
  !(self.closed? || @stream.closed?)
end

#start_connection ⇒ Object 



62
63
64
 
# File 'lib/async/http/protocol/http2/connection.rb', line 62

def start_connection
  @reader ||= read_in_background
end

#version ⇒ Object 



123
124
125
 
# File 'lib/async/http/protocol/http2/connection.rb', line 123

def version
  VERSION
end

#write_frame(frame) ⇒ Object 



72
73
74
75
76
77
 
# File 'lib/async/http/protocol/http2/connection.rb', line 72

def write_frame(frame)
  # We don't want to write multiple frames at the same time.
  @write_frame_guard.acquire do
    super
  end
end

#write_frames(&block) ⇒ Object 



79
80
81
82
83
 
# File 'lib/async/http/protocol/http2/connection.rb', line 79

def write_frames(&block)
  @write_frame_guard.acquire do
    super
  end
end