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1 wakaba 1.3 [1] [[HTTP]] の [DFN[[CODE(HTTP)@en[[[TE:]]]]]] [[欄]]は、受け入れ可能な[[転送符号化]]を表しています。
2     [[クライアント]]は[[鯖]]にこの[[要求頭欄]]を提示することにより、[[鯖]]が適切な[[転送符号化]]を決定することができます。
3 wakaba 1.2
4 wakaba 1.3 * 歴史
5 wakaba 1.2
6 wakaba 1.3 [FIG[
7     [FIGCAPTION[
8     RFC 2616 (HTTP/1.1) 14.39 TE
9     ]FIGCAPTION]
10 wakaba 1.2
11     > The TE request-header field indicates what extension transfer-codings
12     it is willing to accept in the response and whether or not it is
13     willing to accept trailer fields in a chunked transfer-coding. Its
14     value may consist of the keyword "trailers" and/or a comma-separated
15     list of extension transfer-coding names with optional accept
16     parameters (as described in section 3.6).
17    
18 wakaba 1.3 TE 要求頭欄は、応答でどの拡張転送符号化を受け入れる意思があるかや、
19     chunked (塊) 転送符号化で trailers 欄を受け入れる意思があるか否か
20     を示します。値は、キーワード「trailers」と読点(comma)区切りの
21 wakaba 1.2 拡張転送符号化の名前, 必要があれば受け入れパラメーター (3.6節で説明)
22     の一覧の両方または一方を取ることが出来ます。
23    
24     [PRE[
25     TE = "TE" ":" #( t-codings )
26     t-codings = "trailers" | ( transfer-extension [ accept-params ] )
27     ]PRE]
28    
29     The presence of the keyword "trailers" indicates that the client is
30     willing to accept trailer fields in a chunked transfer-coding, as defined in
31     section 3.6.1. This keyword is reserved for use with transfer-coding
32     values even though it does not itself represent a transfer-coding.
33    
34 wakaba 1.3 「trailers」キーワードが現れた場合、クライアントは chunked (塊)
35     転送符号化において3.6.1節で定義されたように、 trailers 欄を
36 wakaba 1.2 受け入れる意思があることを示します。このキーワードは、転送符号化を
37     表すものではありませんが、転送符号化値と同様に使うのに予約します。
38    
39     Examples of its use are: 使用例:
40    
41     - TE: deflate
42     - TE:
43     - TE: trailers, deflate;q=0.5
44    
45     The TE header field only applies to the immediate connection.
46     Therefore, the keyword MUST be supplied within a Connection header
47     field (section 14.10) whenever TE is present in an HTTP/1.1 message.
48    
49 wakaba 1.3 TE 頭欄は、直後の接続にのみ適用されます。ですから、
50 wakaba 1.2 TE が HTTP/1.1 メッセージ中に出現する場合は必ず、キーワードが
51 wakaba 1.3 Connection 頭欄 (14.10節) 中にも供給され'''なければなりません'''。
52 wakaba 1.2
53     A server tests whether a transfer-coding is acceptable, according to
54     a TE field, using these rules:
55    
56 wakaba 1.3 サーバーは、 TE 欄により次の規則を使って、転送符号化が使えるかどうかを
57 wakaba 1.2 確認します。
58    
59     1. The "chunked" transfer-coding is always acceptable. If the keyword
60     "trailers" is listed, the client indicates that it is willing to accept
61     trailer fields in the chunked response on behalf of itself and any downstream
62     clients. The implication is that, if given, the client is stating that either
63     all downstream clients are willing to accept trailer fields in the forwarded
64     response, or that it will attempt to buffer the response on behalf of
65     downstream recipients.
66    
67     [PRE[
68     Note: HTTP/1.1 does not define any means to limit the size of a
69     chunked response such that a client can be assured of buffering
70     the entire response.
71     ]PRE]
72    
73     [PRE[
74     2. If the transfer-coding being tested is one of the transfer-
75     codings listed in the TE field, then it is acceptable unless it
76     is accompanied by a qvalue of 0. (As defined in section 3.9, a
77     qvalue of 0 means "not acceptable.")
78     ]PRE]
79    
80     [PRE[
81     3. If multiple transfer-codings are acceptable, then the
82     acceptable transfer-coding with the highest non-zero qvalue is
83     preferred. The "chunked" transfer-coding always has a qvalue
84     of 1.
85     ]PRE]
86    
87     If the TE field-value is empty or if no TE field is present, the only
88     transfer-coding is "chunked". A message with no transfer-coding is always
89     acceptable.
90    
91 wakaba 1.3 TE 欄値が空か、 TE 欄が存在しない場合、転送符号化「chunked」(塊)
92 wakaba 1.2 だけが使えます。転送符号化の無いメッセージは常に認められます。
93    
94 wakaba 1.3 * ライセンス
95 wakaba 1.2
96     See [[RFCのライセンス]]
97 wakaba 1.3 ]FIG]
98 wakaba 1.2
99 wakaba 1.1 * メモ

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