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.



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# File 'lib/async/http/protocol/http2/connection.rb', line 118

def count
  @count
end

#promises ⇒ Object (readonly)

Returns the value of attribute promises.



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

def promises
  @promises
end

#stream ⇒ Object (readonly)

Returns the value of attribute stream.



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

def stream
  @stream
end

Instance Method Details

#close(error = nil) ⇒ Object 



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# File 'lib/async/http/protocol/http2/connection.rb', line 72

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

#concurrency ⇒ Object 



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

def concurrency
	self.maximum_concurrent_streams
end

#http1? ⇒ Boolean

Returns:

  • (Boolean) 


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

def http1?
	false
end

#http2? ⇒ Boolean

Returns:

  • (Boolean) 


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

def http2?
	true
end

#initialize ⇒ Object 



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# File 'lib/async/http/protocol/http2/connection.rb', line 44

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

#peer ⇒ Object 



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# File 'lib/async/http/protocol/http2/connection.rb', line 114

def peer
	@stream.io
end

#read_in_background(task: Task.current) ⇒ Object 



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# File 'lib/async/http/protocol/http2/connection.rb', line 95

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 IOError, EOFError, Errno::ECONNRESET, Errno::EPIPE, Async::Wrapper::Cancelled
			# Ignore.
		ensure
			close($!)
		end
	end
end

#reusable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/async/http/protocol/http2/connection.rb', line 129

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

#start_connection ⇒ Object 



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# File 'lib/async/http/protocol/http2/connection.rb', line 68

def start_connection
	@reader ||= read_in_background
end

#to_s ⇒ Object 



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

def to_s
	"\#<#{self.class} #{@streams.count} active streams>"
end

#version ⇒ Object 



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# File 'lib/async/http/protocol/http2/connection.rb', line 133

def version
	VERSION
end

#viable? ⇒ Boolean

Can we use this connection to make requests?

Returns:

  • (Boolean) 


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

def viable?
	@stream.connected?
end

#write_frame(frame) ⇒ Object 



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# File 'lib/async/http/protocol/http2/connection.rb', line 78

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

#write_frames(&block) ⇒ Object 



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# File 'lib/async/http/protocol/http2/connection.rb', line 87

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