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 to represent a request and the incoming response.

Defined Under Namespace

Classes: Stream

Instance Attribute Summary collapse

Attributes inherited from Response

#connection

Instance Method Summary collapse

Methods inherited from Response

#hijack?, #peer, #remote_address, #remote_address=

Constructor Details

#initialize(stream) ⇒ Response

Returns a new instance of Response.



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

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

Instance Attribute Details

#request ⇒ Object (readonly)

Returns the value of attribute request.



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# File 'lib/async/http/protocol/http2/response.rb', line 122

def request
  @request
end

#stream ⇒ Object (readonly)

Returns the value of attribute stream.



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

def stream
  @stream
end

Instance Method Details

#build_request(headers) ⇒ Object 



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# File 'lib/async/http/protocol/http2/response.rb', line 136

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

#promises ⇒ Object 



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# File 'lib/async/http/protocol/http2/response.rb', line 132

def promises
  @promises ||= Async::Queue.new
end

#send_request(request, task: Async::Task.current) ⇒ Object

Send a request and read it into this response.



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

def send_request(request, task: Async::Task.current)
  @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],
    [PATH, request.path],
  ]
  
  # 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
  )
  
  if request.body.nil?
    @stream.send_headers(nil, headers, ::Protocol::HTTP2::END_STREAM)
  else
    begin
      @stream.send_headers(nil, headers)
    rescue
      raise RequestFailed
    end
    
    @stream.send_body(request.body)
  end
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/async/http/protocol/http2/response.rb', line 128

def valid?
  !!@status
end

#wait ⇒ Object 



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# File 'lib/async/http/protocol/http2/response.rb', line 124

def wait
  @stream.wait
end