#?SuikaWiki/0.9 page-icon="HTTP"
[[#comment]]
*仕様書から
** RFC 2068 (HTTP/1.1) 19.7.1.1 The Keep-Alive Header
> When the Keep-Alive connection-token has been transmitted with a
request or a response, a Keep-Alive header field MAY also be
included. The Keep-Alive header field takes the following form:

[CODE(HTTP)[Keep-Alive]] [CODE(ABNF)[connection-token]]
が要求または応答で転送されるとき、 [CODE(HTTP)[Keep-Alive]]
頭欄をも含めて'''構いません'''。 [CODE(HTTP)[Keep-Alive]]
頭欄は、次の書式を取ります。

>
-          Keep-Alive-header = "Keep-Alive" ":" 0# keepalive-param
-          keepalive-param = param-name "=" value

> The Keep-Alive header itself is optional, and is used only if a
parameter is being sent. HTTP/1.1 does not define any parameters.

[CODE(HTTP)[Keep-Alive]] 頭自体は省略可能で、引数が送られるときのみ使用します。
HTTP/1.1 は引数を定義しません。

> If the Keep-Alive header is sent, the corresponding connection token
MUST be transmitted. The Keep-Alive header MUST be ignored if
received without the connection token.

[CODE(HTTP)[Keep-Alive]] 頭が送られる場合、対応する接続字句を転送しなければ'''なりません'''。
[CODE(HTTP)[Keep-Alive]] 頭は、接続字句なしで受信した場合には無視しなければ'''なりません'''。

** RFC の部分の License
[[RFCのライセンス]]
* 例
- [1] [SAMP(HTTP)[Keep-Alive: timeout=25, max=85]]
- [2] [CODE(HTTP)[Keep-Alive: 300]]
[[#comment]]

* メモ
- [3] >>2 は [[Mozilla]], >>3 は [[Apache]]