1 Accept 2 Accept-Charset 3 Accept-Encoding 4 Accept-Language 5 Accept-Ranges 6 Age 7 Allow 8 Authentication 9 Authorization 10 Cache-Control 11 Connection 12 Content-Base 13 Content-Disposition 14 Content-Encoding 15 Content-Language 16 Content-Length 17 Content-Location 18 Content-MD5 19 Content-Range 20 Content-Transfer-Encoding 21 Content-Type 22 Cookie 23 Date 24 Depth 25 Derived-From 26 Destination 27 Etag 28 Expect 29 Expires 30 Forwarded 31 From 32 Host 33 If 34 If-Match 35 If-Match-Any 36 If-Modified-Since 37 If-None-Match 38 If-None-Match-Any 39 If-Range 40 If-Unmodified-Since 41 Keep-Alive 42 Last-Modified 43 Link 44 Location 45 Lock-Token 46 Max-Forwards 47 Message-Id 48 Mime 49 Overwrite 50 Pragma 51 Proxy-Authenticate 52 Proxy-Authorization 53 Proxy-Connection 54 Range 55 Referer 56 Retry-After 57 Server 58 Set-Cookie 59 Set-Cookie2 60 Status-URI 61 Timeout 62 Title 63 Trailer 64 Transfer-Encoding 65 Upgrade 66 User-Agent 67 Vary 68 Version 69 WWW-Authenticate 70 Warning 71