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# frozen_string_literal: true
#
# Copyright, 2018, by Samuel G. D. Williams. <http://www.codeotaku.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
require_relative '../request'
require_relative 'stream'
module Async
module HTTP
module Protocol
module HTTP2
# Typically used on the server side to represent an incoming request, and write the response.
class Request < Protocol::Request
class Stream < HTTP2::Stream
def initialize(*)
super
@enqueued = false
@request = Request.new(self)
end
attr :request
def receive_initial_headers(headers, end_stream)
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 == PROTOCOL
raise ::Protocol::HTTP2::HeaderError, "Request protocol already specified!" if @request.protocol
@request.protocol = value
elsif key == CONTENT_LENGTH
raise ::Protocol::HTTP2::HeaderError, "Request content length already specified!" if @length
@length = Integer(value)
elsif key == CONNECTION
raise ::Protocol::HTTP2::HeaderError, "Connection header is not allowed!"
elsif key.start_with? ':'
raise ::Protocol::HTTP2::HeaderError, "Invalid pseudo-header #{key}!"
elsif key =~ /[A-Z]/
raise ::Protocol::HTTP2::HeaderError, "Invalid characters in header #{key}!"
else
add_header(key, value)
end
end
@request.headers = @headers
unless @request.valid?
raise ::Protocol::HTTP2::HeaderError, "Request is missing required headers!"
else
# We only construct the input/body if data is coming.
unless end_stream
@request.body = prepare_input(@length)
end
# We are ready for processing:
@connection.requests.enqueue(@request)
end
return headers
end
def closed(error)
@request = nil
super
end
end
def initialize(stream)
super(nil, nil, nil, nil, VERSION, nil)
@stream = stream
end
attr :stream
def connection
@stream.connection
end
def valid?
@scheme and @method and @path
end
def hijack?
false
end
NO_RESPONSE = [
[STATUS, '500'],
]
def send_response(response)
if response.nil?
return @stream.send_headers(nil, NO_RESPONSE, ::Protocol::HTTP2::END_STREAM)
end
protocol_headers = [
[STATUS, response.status],
]
if protocol = response.protocol
protocol_headers << [PROTOCOL, protocol]
end
if length = response.body&.length
protocol_headers << [CONTENT_LENGTH, length]
end
headers = ::Protocol::HTTP::Headers::Merged.new(protocol_headers, response.headers)
if body = response.body and !self.head?
# 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 = response.headers.trailer!
@stream.send_headers(nil, headers)
@stream.send_body(body, trailer)
else
# Ensure the response body is closed if we are ending the stream:
response.close
@stream.send_headers(nil, headers, ::Protocol::HTTP2::END_STREAM)
end
end
end
end
end
end
end
|
