Cookie Headers - Web DevelopmentYouTube↗  IA↗(long shot)
Education  4.2K views 23 likes 1 dislikes   23 Feb 2015
Udacity 651K subscribers United States YouTube↗


Please select the problem
You must specify your email and describe the problem in detail
Describe your problem in detail if it's not obvious

Click to Play Video Click to Play Video
Okay. So I alluded to this before. Cookies are sent
CookieはHTTPヘッダで送信されます
in HTTP headers. So when a server and, and an HTTP
サーバからのHTTP Responseが
response, wants to give you a cookie, wants to assign a
Cookieをユーザのブラウザに渡す時
cookie to your browser it uses a header that looks something
次のようなヘッダを使います
like this. The header name is Set-Cookie. Like all headers, it's
ヘッダ名はSet-Cookieで他のヘッダと同様に
followed by a colon and then a space and then the
コロンとスペースのあとに
value of the header. And in this particular case, you say,
ヘッダの値が記述されます　この例では
name equals value. There are some other parameters you can have
名前=値です　Cookieのパラメータは他にもありますが
on the cookie that we'll discuss later but, basically, they use
基本的にSet-Cookieヘッダが使われます
the Set-Cookie header to, to set cookie named user_id to this
user_idというCookieにこの値を設定します
value. And remember, this is the value, and this is the
これが値でこちらが名前です
name, and the value can be, you know, up to 4K.
値のサイズは4キロバイトまでです
Honestly, I don't know if there's a limit to how big
名前のサイズの上限は
the name can be. generally, this is very, very short. If
分かりませんが 大体とても短い名前です
the server wants to set, send the multiple cookies, it can
複数のSet-Cookieヘッダを使って
do so by using multiple Set-Cookie, Cookie headers. There's no restriction
サーバは複数のCookieを設定し 送信することができます
that says headers have to be unique. A, a server can
ヘッダが固有でなければならないという制限はなく
send as many cookies as it wants. It's up to the browser
サーバは好きなだけCookieを送信できます
to decide whether or not to store them. Remember, I said about
Cookieを格納するかはブラウザ次第です
20 is the max. So try to, try to keep it under
Cookie数は20個以下にしてください
there. Now, when, when a, this is under Response. Now, in
これがレスポンスに含まれていると
future requests, the browser sends its own header, that this is the,
その後のリクエストで ブラウザは独自のヘッダを送信します
the name of the header, and remember, this is, you know, this
これはヘッダ名です
is also the name of the header, over here, Set-Cookie and then
こちらのSet-Cookieもヘッダ名です
the value of the header, in this case, is user_id
この例ではヘッダの値はuser_id=12345で
equals 12345. Again, we have the, the name of the
繰り返しになりますが これがCookie名で
cookie and the value of the cookie. If we were
こちらがCookieの値です
to make this H, this request match what these two cookies
このリクエストをこちらの2つのCookieに合うように
were to, when our browser sends multiple cookies, it'll look
ブラウザが複数のCookieを送信する場合は
something like this, user_id equals 12345; which separates each cookie from
このように各Cookieをセミコロンで区切って記述します
each other, and then any other cookies. So the browser
ブラウザは1つのCookieヘッダで
sends one cookie header with all of your cookies in it.
すべてのCookieを送信します
The semicolon is important and you may be wondering, well, what
セミコロンをCookieの値の中で使いたい時は
if I want to put a semicolon in my cookie value? And the
どうすればいいでしょうか?
short answer is, don't. And if you really want to, encode
使わないのが一番ですが どうしても使いたい場合はCookieの値を
the cookie value, you know? You, this, this can be whatever you
エンコードしてください
want. The browser doesn't care so you can, you can Base64
Base64でエンコードしたり
it, you can encrypt it, you can ROT13 it, you can do
暗号化したりROT13変換したりできます
whatever you want here but make sure you escape those semicolons
何でもできますが 必ずセミコロンをエスケープして
so you don't goof up your the incoming cookie header. Some frameworks
次のCookieヘッダをダメにしないようにしてください
will do this for you. We are going to be operating
これを行うフレームワークがあり
at a lower level so that's something you'll want to think about.
より下位のレベルで操作できます
Similar videos:

Memcached - Web Development
Udacity
13.5K views 115 likes 3 dislikes 23 Feb 2015100% match

Best Browser - Web Development
Udacity
14.9K views 7 likes 0 dislikes 23 Feb 2015100% match

Code Organization - Web Development
Udacity
7.2K views 25 likes 1 dislikes 27 May 2012100% match

Content Type - Web Development
Udacity
7.5K views 5 likes 1 dislikes 22 Apr 2012100% match

The Method Attribute - Web Development
Udacity
9.6K views 14 likes 8 dislikes 22 Apr 2012100% match

Whitespace
Udacity
47.8K views 26 likes 4 dislikes 23 Feb 2015100% match

Course Outline - Web Development
Udacity
46.2K views 169 likes 0 dislikes 23 Feb 2015100% match

Web Applications - Web Development
Udacity
19.5K views 59 likes 4 dislikes 02 Jun 2014100% match

Best Browser Solution - Web Development
Udacity
9.6K views 22 likes 1 dislikes 23 Feb 2015100% match

Precomputed Caching - Web Development
Udacity
12.2K views 80 likes 0 dislikes 27 May 2012100% match

Shopping List Take 1 - Web Development
Udacity
841 views 1 likes 0 dislikes 23 Feb 2015100% match

Adding Images
Udacity
12.9K views 36 likes 0 dislikes 23 Feb 2015100% match

Types of Databases - Web Development
Udacity
8.5K views 43 likes 4 dislikes 25 Apr 2012100% match

Caching - Web Development
Udacity
12.1K views 102 likes 0 dislikes 23 Feb 2015100% match

File Types
Udacity
34.4K views 11 likes 3 dislikes 23 Feb 2015100% match

User Agent Header - Web Development
Udacity
11.6K views 24 likes 7 dislikes 23 Feb 2015100% match

User Input - Web Development
Udacity
7.7K views 3 likes 0 dislikes 22 Apr 2012100% match

Part 2 - Web Development
Udacity
643 views 2 likes 0 dislikes 07 May 2012100% match

Valid Headers - Web Development
Udacity
7.9K views 1 likes 0 dislikes 23 Feb 2015100% match

Rot13 - Web Development
Udacity
9.3K views 46 likes 8 dislikes 23 Apr 2012100% match

Differences Between Get and Post - Web Development
Udacity
78.3K views 516 likes 18 dislikes 22 Apr 2012100% match

The Action Attribute - Web Development
Udacity
7.5K views 7 likes 0 dislikes 22 Apr 2012100% match

Document Structure
Udacity
7.2K views 24 likes 1 dislikes 23 Feb 2015100% match

Security - Web Development
Udacity
5.7K views 64 likes 0 dislikes 23 May 2012100% match

Datastore Types Solution - Web Development
Udacity
656 views 1 likes 0 dislikes 25 Apr 2012100% match

Introducing URLs - Web Development
Udacity
7.1K views 21 likes 0 dislikes 23 Feb 2015100% match

URL Encoding - Web Development
Udacity
13.7K views 17 likes 13 dislikes 22 Apr 2012100% match

Scaling Databases - Web Development
Udacity
64.3K views 795 likes 7 dislikes 25 Apr 201267% match

Most Common Method - Web Development
Udacity
9.7K views 5 likes 0 dislikes 23 Feb 201567% match

Bold Tag - Web Development
Udacity
53K views 29 likes 0 dislikes 23 Feb 201567% match


Settings Privacy About Contact Donate