1. 属性
2. chunkedTransferEncoding
3. contentLength
4. contentType
5. date
6. expires
7. hashCode
8. host
9. ifModifiedSince
10. persistentConnection
11. port
12. runtimeType
13. 方法
14. add
15. clear
16. forEach
17. noFolding
18. noSuchMethod
19. remove
20. removeAll
21. set
22. toString
23. value
24. 运算符
25. 运算符 ==
26. 运算符 []
27. 常量
28. acceptCharsetHeader
29. acceptEncodingHeader
30. acceptHeader
31. acceptLanguageHeader
32. acceptRangesHeader
33. accessControlAllowCredentialsHeader
34. accessControlAllowHeadersHeader
35. accessControlAllowMethodsHeader
36. accessControlAllowOriginHeader
37. accessControlExposeHeadersHeader
38. accessControlMaxAgeHeader
39. accessControlRequestHeadersHeader
40. accessControlRequestMethodHeader
41. ageHeader
42. allowHeader
43. authorizationHeader
44. cacheControlHeader
45. connectionHeader
46. contentDisposition
47. contentEncodingHeader
48. contentLanguageHeader
49. contentLengthHeader
50. contentLocationHeader
51. contentMD5Header
52. contentRangeHeader
53. contentTypeHeader
54. cookieHeader
55. dateHeader
56. entityHeaders
57. etagHeader
58. expectHeader
59. expiresHeader
60. fromHeader
61. generalHeaders
62. hostHeader
63. ifMatchHeader
64. ifModifiedSinceHeader
65. ifNoneMatchHeader
66. ifRangeHeader
67. ifUnmodifiedSinceHeader
68. lastModifiedHeader
69. locationHeader
70. maxForwardsHeader
71. pragmaHeader
72. proxyAuthenticateHeader
73. proxyAuthorizationHeader
74. rangeHeader
75. refererHeader
76. requestHeaders
77. responseHeaders
78. retryAfterHeader
79. serverHeader
80. setCookieHeader
81. teHeader
82. trailerHeader
83. transferEncodingHeader
84. upgradeHeader
85. userAgentHeader
86. varyHeader
87. viaHeader
88. warningHeader
89. wwwAuthenticateHeader