Cookie Domains - Web DevelopmentYouTube↗  IA↗(long shot)
Education  5.1K views 22 likes 0 dislikes   23 Feb 2015
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So as we saw in the demos, the cookies can have extra parameters,
デモでみた通りクッキーには
not just the value.
いくつか名前付きのパラメータを持たせることができます。
So, let me, let me draw anoth, an, an example cookie for you.
例をお見せしましょう。
Here's a, here's an example set cookie header for
これはクッキーをセットする、Set-Cookieヘッダの例です。
setting this cookie, whose name is name, nice and confusing.
パラメータの名前は"name"です。混乱しそうですが。
Whose value is Steve.
そして値は"steve"です。
And now we've added a couple extra parameters.
他にもパラメータを追加しています。
We've got semicolon to end the value.
値の終わりは ; で示します。
We've added this domain parameter.
Domainパラメータを追加していますね。
And this is what domain this cookie is relevant to.
これはこのクッキーが紐付くドメインを示しています。
So in this case, it is relevant to www.reddit.com and
この例では www.reddit.com です。
this is the path that it's relevant to.
そしてクッキーが紐付くパスを指定しています。
So the path is easier to explain.
Pathパラメータの方は、説明が簡単です。
basically, you can put whatever you want here and
ここにはどんなパスでも指定できます。
then, in this case, this is the default path.
この例ではデフォルトのパスを指定しています。
If you don't specify a path we just assume you mean slash.
もしPathを指定しないと / が指定されたと見なされます。
And this is actually the most common use case of cookies.
実際、それが最も一般的なクッキーの使い方でしょう。
You the cookie applies to all of the paths.
どのパスにアクセスするときもクッキーが適用されます。
But if you want to restrict the cookie to a particular path, you can specify
もしクッキーを特定のパスにだけ使用したい場合
that path here and the browser will make sure that the path you're requesting
ここで指定をしておくとブラウザはそれを解釈し
starts with this value before it sends the cookie.
そのパスの下にだけクッキーを使用します。
So the domain is much more interesting and much more complex.
Domainパラメータはずっと興味深くそして複雑です。
And let's, let's talk about this a little bit so this means that basically, this cookie will not get sent by the browser to the server unless the server's domain is www.reddit.com or basically, ends with www.reddit.com.
ですので詳しく解説しましょう。 この設定があるとブラウザはサーバにクッキーを送信しません。 サーバのドメインが www.reddit.com か、 www.reddit.com で終わるドメインでない限り。
So, domains that this work for are, for
つまりこの例でクッキーが送信されるのは
example, www.reddit.com foo.www.reddit.com.
サーバが www.reddit.com とか foo.www.reddit.com の場合です。
Domains that, that will not receive this cookie, would be for
クッキーを送信しないドメインの例は
example just reddit.com without the ww, or bar.reddit.com because this cookie was restricted to www, so basically,
wwwを外した reddit.com とか bar.reddit.com とかです。 このクッキーはwwwまで含むドメインに限定されているからです。
the, the site you're at has to begin, or I mean sorry end with www.reddit.com.
www.reddit.comで終わるドメインの時だけクッキーが使用されます。
You can't set cookies to just .com, you have to have at least two periods.
ただの.comは指定できません。最低２階層のドメインを含む必要があります。
So the minimum domain you can set a cookie for is .reddit.com.
.reddit.com ならば設定できます。
If you try to set for just reddit.com, the, that first period will automatically get added.
reddit.comを設定しようとすると気づくでしょうが 最初のピリオドは自動で追加されます。
That controls,
このようにして
the domain controls which domain a browser will send the cookie to.
ブラウザがどのドメインにクッキーを送信するか制御しているのです。
What about, you know, can, can I have can I
では reddit.comのWEBサーバは
have a web server at reddit.com that sets a cookie for google.com?
google.comのクッキーをセットできるでしょうか。
The answer is, no.
答えはNOです。
Similar to how the domain parameter restricts which domains a browser will
ブラウザーがどのドメインにクッキーを送信するか制御されているように
send a cookie to, the domain who's serving the request, the, the,
サーバがどのドメインのクッキーをセットできるかも制御されています。
basically the domain of the web server, that, of,
WEBサーバの表示するページのドメインよりも
of the webpage, you may only set a cookie to that domain or higher.
上位のドメインのクッキーは設定できません。
So if we're at www.reddit.com the browser will only accept cookies for
ですからwww.reddit.comのWEBサーバからは
by default, www.reddit.com if there's no, no domain parameter.
ブラウザはデフォルトでwww.reddit.comのクッキーしか受け取りません。
If there is a domain parameter,
もしDomainパラメータが指定されていれば
the only valid domains are www.reddit.com or reddit.com.
www.reddit.comに加えてreddit.comのクッキーも受け取るでしょう。
We can't set a cookie for bar.reddit.com or foo.reddit.com.
bar.reddit.comやfoo.reddit.com.のクッキーはセットできません。
And, and this is to prevent you know, if you have multiple websites,
ですからもしWEBサイトを複数運営していた場合
kind of sharing the same top-level domain, you know, halfspot.com for
同じトップレベルドメインを共有することはできません。
example, you know, you don't, I,
例えばhalfspot.comとかは使えません。
I can't see a cookie on, in my app that affects the behavior of your app.
クッキーがアプリの動作にどんな影響を与えるかはわからないので
I can only set a cookie that get sent with www and with the top level.
クッキーはwwwとそのトップレベルにしかセットできないようになっているのです。
That's how the domain restrictions work.
以上がDomainパラメータによる制限です。
Let's have a little quiz.
ではクイズです。
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