Class SpdyHttpEncoder

All Implemented Interfaces:
ChannelHandler, ChannelOutboundHandler

public class SpdyHttpEncoder extends MessageToMessageEncoder<HttpObject>
Encodes HttpRequests, HttpResponses, and HttpContents into SpdySynStreamFrames and SpdySynReplyFrames.

Request Annotations

SPDY specific headers must be added to HttpRequests:
Header NameHeader Value
"X-SPDY-Stream-ID" The Stream-ID for this request. Stream-IDs must be odd, positive integers, and must increase monotonically.
"X-SPDY-Priority" The priority value for this request. The priority should be between 0 and 7 inclusive. 0 represents the highest priority and 7 represents the lowest. This header is optional and defaults to 0.

Response Annotations

SPDY specific headers must be added to HttpResponses:
Header NameHeader Value
"X-SPDY-Stream-ID" The Stream-ID of the request corresponding to this response.

Pushed Resource Annotations

SPDY specific headers must be added to pushed HttpRequests:
Header NameHeader Value
"X-SPDY-Stream-ID" The Stream-ID for this resource. Stream-IDs must be even, positive integers, and must increase monotonically.
"X-SPDY-Associated-To-Stream-ID" The Stream-ID of the request that initiated this pushed resource.
"X-SPDY-Priority" The priority value for this resource. The priority should be between 0 and 7 inclusive. 0 represents the highest priority and 7 represents the lowest. This header is optional and defaults to 0.

Required Annotations

SPDY requires that all Requests and Pushed Resources contain an HTTP "Host" header.

Optional Annotations

Requests and Pushed Resources must contain a SPDY scheme header. This can be set via the "X-SPDY-Scheme" header but otherwise defaults to "https" as that is the most common SPDY deployment.

Chunked Content

This encoder associates all HttpContents that it receives with the most recently received 'chunked' HttpRequest or HttpResponse.

Pushed Resources

All pushed resources should be sent before sending the response that corresponds to the initial request.
  • Field Details

    • currentStreamId

      private int currentStreamId
    • validateHeaders

      private final boolean validateHeaders
    • headersToLowerCase

      private final boolean headersToLowerCase
  • Constructor Details

    • SpdyHttpEncoder

      public SpdyHttpEncoder(SpdyVersion version)
      Creates a new instance.
      Parameters:
      version - the protocol version
    • SpdyHttpEncoder

      public SpdyHttpEncoder(SpdyVersion version, boolean headersToLowerCase, boolean validateHeaders)
      Creates a new instance.
      Parameters:
      version - the protocol version
      headersToLowerCase - convert header names to lowercase. In a controlled environment, one can disable the conversion.
      validateHeaders - validate the header names and values when adding them to the SpdyHeaders
  • Method Details