Class: Async::HTTP::Protocol::HTTP2
- Inherits:
-
Object
- Object
- Async::HTTP::Protocol::HTTP2
- Defined in:
- lib/async/http/protocol/http2.rb
Overview
A server that supports both HTTP1.0 and HTTP1.1 semantics by detecting the version of the request.
Constant Summary collapse
- HTTPS =
'https'.freeze
- SCHEME =
':scheme'.freeze
- METHOD =
':method'.freeze
- PATH =
':path'.freeze
- AUTHORITY =
':authority'.freeze
- REASON =
':reason'.freeze
- STATUS =
':status'.freeze
- VERSION =
'HTTP/2.0'.freeze
- RESPONSE_VERSION =
'HTTP/2'.freeze
Class Method Summary collapse
Instance Method Summary collapse
- #close ⇒ Object
-
#initialize(controller, stream) ⇒ HTTP2
constructor
A new instance of HTTP2.
-
#multiplex ⇒ Object
Multiple requests can be processed at the same time.
- #read_in_background(task: Task.current) ⇒ Object
- #receive_requests(task: Task.current, &block) ⇒ Object
- #reusable? ⇒ Boolean
- #send_request(authority, method, path, headers = {}, body = nil) ⇒ Object
Constructor Details
#initialize(controller, stream) ⇒ HTTP2
Returns a new instance of HTTP2.
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# File 'lib/async/http/protocol/http2.rb', line 50 def initialize(controller, stream) @controller = controller @stream = stream @controller.on(:frame) do |data| @stream.write(data) @stream.flush end @controller.on(:frame_sent) do |frame| Async.logger.debug(self) {"Sent frame: #{frame.inspect}"} end @controller.on(:frame_received) do |frame| Async.logger.debug(self) {"Received frame: #{frame.inspect}"} end if @controller.is_a? ::HTTP2::Client @controller.send_connection_preface end @reader = read_in_background end |
Class Method Details
.client(stream) ⇒ Object
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# File 'lib/async/http/protocol/http2.rb', line 33 def self.client(stream) self.new(::HTTP2::Client.new, stream) end |
.server(stream) ⇒ Object
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# File 'lib/async/http/protocol/http2.rb', line 37 def self.server(stream) self.new(::HTTP2::Server.new, stream) end |
Instance Method Details
#close ⇒ Object
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# File 'lib/async/http/protocol/http2.rb', line 95 def close Async.logger.debug(self) {"Closing connection"} @reader.stop @stream.close end |
#multiplex ⇒ Object
Multiple requests can be processed at the same time.
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# File 'lib/async/http/protocol/http2.rb', line 75 def multiplex @controller.remote_settings[:settings_max_concurrent_streams] end |
#read_in_background(task: Task.current) ⇒ Object
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# File 'lib/async/http/protocol/http2.rb', line 83 def read_in_background(task: Task.current) task.async do |nested_task| buffer = Async::IO::BinaryString.new while data = @stream.io.read(1024*8, buffer) @controller << data end Async.logger.debug(self) {"Connection reset by peer!"} end end |
#receive_requests(task: Task.current, &block) ⇒ Object
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# File 'lib/async/http/protocol/http2.rb', line 101 def receive_requests(task: Task.current, &block) # emits new streams opened by the client @controller.on(:stream) do |stream| request = Request.new request.version = VERSION request.headers = {} request.body = Body.new stream.on(:headers) do |headers| headers.each do |key, value| if key == METHOD request.method = value elsif key == PATH request.path = value elsif key == AUTHORITY request. = value else request.headers[key] = value end end end stream.on(:data) do |chunk| request.body.write(chunk.to_s) unless chunk.empty? end stream.on(:half_close) do response = yield request request.body.close # send response headers = {STATUS => response[0].to_s} headers.update(response[1]) stream.headers(headers, end_stream: false) response[2].each do |chunk| stream.data(chunk, end_stream: false) end stream.data("", end_stream: true) end end @reader.wait end |
#reusable? ⇒ Boolean
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# File 'lib/async/http/protocol/http2.rb', line 79 def reusable? @reader.alive? end |
#send_request(authority, method, path, headers = {}, body = nil) ⇒ Object
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# File 'lib/async/http/protocol/http2.rb', line 151 def send_request(, method, path, headers = {}, body = nil) stream = @controller.new_stream internal_headers = { SCHEME => HTTPS, METHOD => method, PATH => path, AUTHORITY => , }.merge(headers) stream.headers(internal_headers, end_stream: body.nil?) if body body.each do |chunk| stream.data(chunk, end_stream: false) end stream.data("", end_stream: true) end finished = Async::Notification.new response = Response.new response.version = RESPONSE_VERSION response.headers = {} response.body = Body.new stream.on(:headers) do |headers| # Async.logger.debug(self) {"Stream headers: #{headers.inspect}"} headers.each do |key, value| if key == STATUS response.status = value.to_i elsif key == REASON response.reason = value else response.headers[key] = value end end finished.signal end stream.on(:data) do |chunk| Async.logger.debug(self) {"Stream data: #{chunk.inspect}"} response.body.write(chunk.to_s) unless chunk.empty? end stream.on(:half_close) do Async.logger.debug(self) {"Stream half-closed."} end stream.on(:close) do Async.logger.debug(self) {"Stream closed, sending signal."} # TODO should we prefer response.close? response.body.close end @stream.flush # Async.logger.debug(self) {"Stream flushed, waiting for signal."} finished.wait # Async.logger.debug(self) {"Stream finished: #{response.inspect}"} return response end |