HTTP/2 数据压缩

Question

我试图了解 HTTP/2 协议压缩数据字段的方式。我在rfc中没有找到算法。我知道它是一个二进制协议。 我正在寻找一种将二进制协议恢复为人类可读内容的方法。我以为它是像 gzip 一样写在标头中，但没有人有源代码可以让我查找二进制协议参考？

Frame 55: 151 bytes on wire (1208 bits), 151 bytes captured (1208 bits) on interface 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst:00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
Transmission Control Protocol, Src Port: 443 (443), Dst Port: 55300 (55300), Seq: 1087, Ack: 1078, Len: 85
Secure Sockets Layer
HyperText Transfer Protocol 2
Stream: HEADERS, Stream ID: 13, Length 47
    Length: 47
    Type: HEADERS (1)
    Flags: 0x04
    0... .... .... .... .... .... .... .... = Reserved: 0x00000000
    .000 0000 0000 0000 0000 0000 0000 1101 = Stream Identifier: 13
    [Pad Length: 0]
    Header Block Fragment: 8854012a5a839bd9ab5f87497ca589d34d1f5c0333333861...
    [Header Length: 177]
    [Header Count: 6]
    Header: :status: 200
    Header: access-control-allow-origin: *
    Header: content-encoding: gzip
    Header: content-type: text/html
    Header: content-length: 338
    Header: date: Wed, 17 Aug 2016 15:14:25 GMT
    Padding: <MISSING>

    Frame 56: 442 bytes on wire (3536 bits), 442 bytes captured (3536 bits) on interface 0
  Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
  Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
  Transmission Control Protocol, Src Port: 443 (443), Dst Port: 55300 (55300), Seq: 1172, Ack: 1078, Len: 376
  Secure Sockets Layer
  HyperText Transfer Protocol 2
      Stream: DATA, Stream ID: 13, Length 338
          Length: 338
          Type: DATA (0)
          Flags: 0x01
          0... .... .... .... .... .... .... .... = Reserved: 0x00000000
          .000 0000 0000 0000 0000 0000 0000 1101 = Stream Identifier: 13
          [Pad Length: 0]
          Data: 1f8b080000096e8800ff9cd2416b1b311005e0b3ffc5eb9e...
          Padding: <MISSING>

Answer 1

HTTP/2 响应的响应正文的压缩（或不压缩）方式与 HTTP/1 的工作方式完全相同：请求中的

Accept-Encoding:

和响应中的

Content-Encoding:

。 HTTP/2 在主体压缩方面没有做任何新的事情，只有在 HTTP/1 中根本没有压缩的标头。

还可以提到的是，HTTP/3 采用与 HTTP/2 完全相同的压缩方法：标头被压缩，内容根据上述内容进行压缩。

没有 HTTP 版本压缩上传内容。