Class: Async::HTTP::Protocol::HTTP2::Response

Inherits:
Response
  • Object
show all
Defined in:
lib/async/http/protocol/http2/response.rb

Overview

Typically used on the client side for writing a request and reading the incoming response.

Defined Under Namespace

Classes: Stream

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Response

#hijack?, #inspect, #peer, #remote_address

Constructor Details

#initialize(stream) ⇒ Response

Initialize the response from an HTTP/2 stream.



144
145
146
147
148
149
 
# File 'lib/async/http/protocol/http2/response.rb', line 144

def initialize(stream)
	super(stream.connection.version, nil, nil)
	
	@stream = stream
	@request = nil
end

Instance Attribute Details

#request ⇒ Object (readonly)

Returns the value of attribute request.



152
153
154
 
# File 'lib/async/http/protocol/http2/response.rb', line 152

def request
  @request
end

#stream ⇒ Object (readonly)

Returns the value of attribute stream.



151
152
153
 
# File 'lib/async/http/protocol/http2/response.rb', line 151

def stream
  @stream
end

Instance Method Details

#build_request(headers) ⇒ Object

Build a request object from push promise headers.



189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
 
# File 'lib/async/http/protocol/http2/response.rb', line 189

def build_request(headers)
	request = ::Protocol::HTTP::Request.new
	request.headers = ::Protocol::HTTP::Headers.new
	
	headers.each do |key, value|
		if key == SCHEME
			raise ::Protocol::HTTP2::HeaderError, "Request scheme already specified!" if request.scheme
			
			request.scheme = value
		elsif key == AUTHORITY
			raise ::Protocol::HTTP2::HeaderError, "Request authority already specified!" if request.authority
			
			request.authority = value
		elsif key == METHOD
			raise ::Protocol::HTTP2::HeaderError, "Request method already specified!" if request.method
			
			request.method = value
		elsif key == PATH
			raise ::Protocol::HTTP2::HeaderError, "Request path is empty!" if value.empty?
			raise ::Protocol::HTTP2::HeaderError, "Request path already specified!" if request.path
			
			request.path = value
		elsif key.start_with? ":"
			raise ::Protocol::HTTP2::HeaderError, "Invalid pseudo-header #{key}!"
		else
			request.headers[key] = value
		end
	end
	
	@request = request
end

#connection ⇒ Object 



167
168
169
 
# File 'lib/async/http/protocol/http2/response.rb', line 167

def connection
	@stream.connection
end

#head? ⇒ Boolean

Returns:

  • (Boolean) 


177
178
179
 
# File 'lib/async/http/protocol/http2/response.rb', line 177

def head?
	@request&.head?
end

#pool=(pool) ⇒ Object

Assign the connection pool, releasing the connection when the stream is closed.



156
157
158
159
160
161
162
163
164
 
# File 'lib/async/http/protocol/http2/response.rb', line 156

def pool=(pool)
	# If we are already closed, the stream can be released now:
	if @stream.closed?
		pool.release(@stream.connection)
	else
		# Otherwise, we will release the stream when it is closed:
		@stream.pool = pool
	end
end

#send_request(request) ⇒ Object

Send a request and read it into this response.



222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
 
# File 'lib/async/http/protocol/http2/response.rb', line 222

def send_request(request)
	@request = request
	
	# https://http2.github.io/http2-spec/#rfc.section.8.1.2.3
	# All HTTP/2 requests MUST include exactly one valid value for the :method, :scheme, and :path pseudo-header fields, unless it is a CONNECT request (Section 8.3). An HTTP request that omits mandatory pseudo-header fields is malformed (Section 8.1.2.6).
	pseudo_headers = [
		[SCHEME, request.scheme],
		[METHOD, request.method],
	]
	
	if path = request.path
		pseudo_headers << [PATH, path]
	end
	
	# To ensure that the HTTP/1.1 request line can be reproduced accurately, this pseudo-header field MUST be omitted when translating from an HTTP/1.1 request that has a request target in origin or asterisk form (see [RFC7230], Section 5.3). Clients that generate HTTP/2 requests directly SHOULD use the :authority pseudo-header field instead of the Host header field.
	if authority = request.authority
		pseudo_headers << [AUTHORITY, authority]
	end
	
	if protocol = request.protocol
		pseudo_headers << [PROTOCOL, protocol]
	end
	
	headers = ::Protocol::HTTP::Headers::Merged.new(
		pseudo_headers,
		request.headers.header
	)
	
	if request.body.nil?
		@stream.send_headers(headers, ::Protocol::HTTP2::END_STREAM)
	else
		if length = request.body.length
			# This puts it at the end of the pseudo-headers:
			pseudo_headers << [CONTENT_LENGTH, length]
		end
		
		# This function informs the headers object that any subsequent headers are going to be trailer. Therefore, it must be called *before* sending the headers, to avoid any race conditions.
		trailer = request.headers.trailer!
		
		begin
			@stream.send_headers(headers)
		rescue
			raise ::Protocol::HTTP::RefusedError
		end
		
		@stream.send_body(request.body, trailer)
	end
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


182
183
184
 
# File 'lib/async/http/protocol/http2/response.rb', line 182

def valid?
	!!@status
end

#wait ⇒ Object

Wait for the response headers to be received.



172
173
174
 
# File 'lib/async/http/protocol/http2/response.rb', line 172

def wait
	@stream.wait
end