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Using HTTP cookies - HTTP
WebHTTPCookies
cookies are mainly used for three purposes: session management logins, shopping carts, game scores, or anything else the server should remember personalization user preferences, themes, and other settings tracking recording and analyzing user behavior cookies were once used for general client-side storage.
...cookies are sent with every request, so they can worsen performance (especially for mobile data connections).
... to see stored cookies (and other storage that a web page can use), you can enable the storage inspector in developer tools and select cookies from the storage tree.
...And 35 more matches
nsICookieService
netwerk/cookie/public/nsicookieservice.idlscriptable provides methods for setting and getting cookies in the context of a page load.
... var cookiesvc = components.classes["@mozilla.org/cookieservice;1"] .getservice(components.interfaces.nsicookieservice); notifications this service broadcasts the following notifications when the cookie list is changed, or a cookie is rejected: topic subject data cookie-changed broadcast whenever the cookie list changes in some way.
... batch-deleted a set of cookies were deleted as part of a purge operation.
...And 13 more matches
Storage access policy: Block cookies from trackers
firefox includes a new storage access policy that blocks cookies and other site data from third-party tracking resources.
... the storage access policy blocks resources identified as trackers from accessing their cookies and other site storage when they are loaded in a third-party context.
... this prevents those resources from retrieving tracking identifiers stored in cookies or site storage and using them to identify users across visits to multiple first parties.
...And 9 more matches
Cookies - Firefox Developer Tools
when you select an origin inside the cookies storage type from the storage tree, all the cookies present for that origin will be listed in a table.
... the cookies table has the following columns: name — the name of the cookie.
...same-site cookies allow servers to mitigate the risk of csrf and information leakage attacks by asserting that a particular cookie should only be sent with requests initiated from the same registrable domain.
...And 6 more matches
SameSite cookies - HTTP
values the samesite attribute accepts three values: lax cookies are allowed to be sent with top-level navigations and will be sent along with get request initiated by third party website.
... strict cookies will only be sent in a first-party context and not be sent along with requests initiated by third party websites.
... none cookies will be sent in all contexts, i.e sending cross-origin is allowed.
...And 5 more matches
nsICookieStorage
this interface represents the storage repository for cookies.
... modules/plugin/base/public/nsicookiestorage.idlnot scriptable please add a summary to this article.
... last changed in gecko 1.7 inherits from: nsisupports method overview void getcookie(in string acookieurl, in voidptr acookiebuffer, in pruint32ref acookiesize); void setcookie(in string acookieurl, in constvoidptr acookiebuffer, in unsigned long acookiesize); methods getcookie() retrieves a cookie from the browser's persistent cookie store.
...And 4 more matches
Cookies Preferences in Mozilla
network.cookie.cookiebehavior default value: 0 0 = accept all cookies by default 1 = only accept from the originating site (block third party cookies) 2 = block all cookies by default 3 = use p3p settings (note: this is only applicable to older mozilla suite and seamonkey versions.) 4 = storage access policy: block cookies from trackers network.cookie.lifetimepolicy default value: 0 0 = accept cookies normally 1 = prompt for each cookie (prompting was removed in firefox 44) 2 = accept for current session only 3 = accept for n days network.cookie.lifetime.days default value:...
... 90 only used if network.cookie.lifetimepolicy is set to 3 sets the number of days that the lifetime of cookies should be limited to.
... network.cookie.alwaysacceptsessioncookies default value: false only used if network.cookie.lifetimepolicy is set to 1 true = accepts session cookies without prompting false = prompts for session cookies network.cookie.thirdparty.sessiononly default value: false true = restrict third party cookies to the session only false = no restrictions on third party cookies network.cookie.maxnumber default value: 1000 configures the maximum amount of cookies to be stored valid range is from 0-65535, rfc 2109 and 2965 require this to be at least 300 network.cookie.maxperhost default value: 50 configures the maximum amount of cookies to be stored per host valid range is from 0-65535, rfc 2109 and 2965 require this to be at least 20 network.cookie.disablecookieformailnews default value: true...
...And 3 more matches
Cookies - Archive of obsolete content
reading existing cookies cookies for a given host, represented as nsicookie2 objects, can be enumerated as such: let enum = services.cookies.getcookiesfromhost("example.com"); while (enum.hasmoreelements()) { var cookie = enum.getnext().queryinterface(ci.nsicookie2); dump(cookie.host + ";" + cookie.name + "=" + cookie.value + "\n"); } all cookies, regardless of host, can be enumerated using services.cookies.enumerator rather than getcookiesfromhost().
... services.cookies.add(".host.example.com", "/cookie-path", "cookie_name", "cookie_value", is_secure, is_http_only, is_session, expiry_date); see also document.cookie nsicookie nsicookie2 nsicookieservice nsicookiemanager nsicookiemanager2 http cookies ...
Cookies in Mozilla
creating a cookie log steps to create and attach a cookie log in order to aid in triaging a bug in cookies.
... cookies preferences in mozilla documentation on what the preferences used by the cookies code actually do.
nsICookieManager2
to create an object implementing this interface: components.utils.import("resource://gre/modules/services.jsm"); var cookieservice = services.cookies; method overview void add(in autf8string ahost, in autf8string apath, in acstring aname, in acstring avalue, in boolean aissecure, in boolean aishttponly, in boolean aissession, in print64 aexpiry); boolean cookieexists(in nsicookie2 acookie); unsigned long countcookiesfromhost(in autf8string ahost); boolean findmatchingcookie(in...
... nsicookie2 acookie, out unsigned long acountfromhost); obsolete since gecko 1.9 nsisimpleenumerator getcookiesfromhost(in autf8string ahost); void importcookies(in nsifile acookiefile); methods add() adds a cookie.
... nsicookieservice is the normal way to do this.
...And 15 more matches
Set-Cookie - HTTP
to send multiple cookies, multiple set-cookie headers should be sent in the same response.
... for more information, see the guide on http cookies.
... __secure- prefix: cookies names starting with __secure- (dash is part of the prefix) must be set with the secure flag from a secure page (https).
...And 13 more matches
Document.cookie - Web APIs
WebAPIDocumentcookie
the document property cookie lets you read and write cookies associated with the document.
... it serves as a getter and setter for the actual values of the cookies.
... syntax read all cookies accessible from this location allcookies = document.cookie; in the code above allcookies is a string containing a semicolon-separated list of all cookies (i.e.
...And 10 more matches
Using XPCOM Components
in fact, virtually all of the functionality that you associate with a browser - navigation, window management, managing cookies, bookmarks, security, searching, rendering, and other features - is defined in xpcom components and accessed by means of those component interfaces.
...whenever a user accesses the cookie manager dialog to view, organize, or remove cookies that have been stored on the system, they are using the cookiemanager component behind the scenes.
... the nsicookiemanager interface removeall remove all cookies from the cookie list.
...And 9 more matches
Index
MozillaTechXPCOMIndex
in fact, virtually all of the functionality that you associate with a browser - navigation, window management, managing cookies, bookmarks, security, searching, rendering, and other features - is defined in xpcom components and accessed by means of those component interfaces.
...to create an instance, use: 448 nsicookie cookies, interfaces, interfaces:scriptable, xpcom, xpcom api reference, xpcom interface reference an optional interface for accessing the http or javascript cookie object.
... 449 nsicookie2 cookies, interfaces, interfaces:scriptable, xpcom, xpcom api reference, xpcom interface reference the nsicookie2 interface provides information about a cookie, and extends the nsicookie interface.
...And 9 more matches
Migrating from Firebug - Firefox Developer Tools
they contain a headers, params, response and cookies panel.
... storage inspector the cookies panel in firebug displays information related to the cookies created by a page and allows to manipulate the information they store.
...in contrast to firebug the storage inspector not only allows to inspect cookies but also other kinds of storages like the local and session storage, the cache and indexeddb databases.
...And 8 more matches
Creating Sandboxed HTTP Connections
introduction starting with gecko 1.8.1 (firefox 2), it is possible to create sandboxed http connections which don't affect the user's cookies.
... since nsistreamlistener does not cover cookies, the current channel being used will need to be stored as a global, since another listener will be used for cookie notifications (covered in the next section).
... }) } handling cookies when sending a request, cookies that apply to the url are sent with the http request.
...And 7 more matches
Index - Web APIs
WebAPIIndex
876 document.cookie api, dom, document, html dom, js, needsmarkupwork, reference, storage, cookie the document property cookie lets you read and write cookies associated with the document.
... it serves as a getter and setter for the actual values of the cookies.
... 877 simple cookie framework cookies, cookie as cookies are just specially formatted strings it is sometimes difficult to manage them.
...And 7 more matches
Types of attacks - Web security
the user's browser cannot detect the malicious script is untrustworthy, and so gives it access to any cookies, session tokens, or other sensitive site-specific information, or lets the malicious script rewrite the html content.
...the variety of attacks based on xss is almost limitless, but they commonly include transmitting private data like cookies or other session information to the attacker, redirecting the victim to a webpage controlled by the attacker, or performing other malicious operations on the user's machine under the guise of the vulnerable site.
...in this situation, someone includes an image that isn’t really an image (for example in an unfiltered chat or forum), instead it really is a request to your bank’s server to withdraw money: <img src="https://bank.example.com/withdraw?account=bob&amount=1000000&for=mallory"> now, if you are logged into your bank account and your cookies are still valid (and there is no other validation), you will transfer money as soon as you load the html that contains this image.
...And 5 more matches
XPCOM Examples - Archive of obsolete content
cookies next, we will get a list of cookies that have been saved in the browser.
...it implements the nsicookiemanager interface which can be used to enumerate over all of the cookies.
... here is an example which populates a menu list with the names of all of the cookies set from mozillazine.
...And 4 more matches
Cross-Origin Resource Sharing (CORS) - HTTP
WebHTTPCORS
servers can also inform clients whether "credentials" (such as cookies and http authentication) should be sent with requests.
... requests with credentials the most interesting capability exposed by both xmlhttprequest or fetch and cors is the ability to make "credentialed" requests that are aware of http cookies and http authentication information.
... in this example, content originally loaded from http://foo.example makes a simple get request to a resource on http://bar.other which sets cookies.
...And 4 more matches
Storage Inspector - Firefox Developer Tools
cookies — all the cookies created by the page or any iframes inside of the page.
... cookies created as a part of response of network calls are also listed, but only for calls that happened while the tool is open.
...for cookies, the protocol does not differentiate the origin.
...And 3 more matches
Storage Access API - Web APIs
concepts and usage most browsers implement a number of storage access policies that restrict access to cookies and site data for embedded, cross-origin resources.
... the semantics around third-party cookie blocking policies in particular differ from browser to browser, but the core functionality is similar: cross-origin resources embedded in a third-party context are not given access to the same cookies and site storage that they would have access to when loaded in a first-party context.
...as an example, federated logins often require access to authentication cookies stored in first-party storage, and will require the user to sign in on each site separately (or completely break) if those cookies are not available.
...And 3 more matches
Clear-Site-Data - HTTP
the clear-site-data header clears browsing data (cookies, storage, cache) associated with the requesting website.
... // single directive clear-site-data: "cache" // multiple directives (comma separated) clear-site-data: "cache", "cookies" // wild card clear-site-data: "*" directives all directives must comply with the quoted-string grammar.
... "cookies" indicates that the server wishes to remove all cookies for the origin of the response url.
...And 3 more matches
HTTP Index - HTTP
WebHTTPIndex
45 http cookies advertising, browser, cookies, cookies article, guide, http, history, javascript, privacy, protocols, server, storage, web development, data, request, tracking an http cookie (web cookie, browser cookie) is a small piece of data that a server sends to the user's web browser.
... 68 clear-site-data http, http header, reference, header the clear-site-data header clears browsing data (cookies, storage, cache) associated with the requesting website.
... 109 cookie cookies, http, reference, header, request the cookie http request header contains stored http cookies previously sent by the server with the set-cookie header.
...And 3 more matches
Index - Archive of obsolete content
177 cookies add-ons, code snippets, cookies, extensions no summary!
...the issue that is commonly overlooked here is that the rss feed could contain some malicious javascript code and it would then execute with the privileges of the extension — meaning that it would get full access to the browser (cookies, history etc) and to user’s files.
...this includes cookies, history information, download information, and so forth.
...And 2 more matches
Client-side storage - Learn web development
old school: cookies the concept of client-side storage has been around for a long time.
... since the early days of the web, sites have used cookies to store information to personalize user experience on websites.
... these days, there are easier mechanisms available for storing client-side data, therefore we won't be teaching you how to use cookies in this article.
...And 2 more matches
Website security - Learn web development
if a user clicks the submit button, an http post request will be sent to the server containing the transaction details and any client-side cookies that the browser associated with the site (adding associated site cookies to requests is normal browser behavior).
... the server will check the cookies, and use them to determine whether or not the user is logged in and has permission to make the transaction.
... note: the trick here is that john doesn't need to have access to the user's cookies (or access credentials).
...And 2 more matches
Navigator.cookieEnabled - Web APIs
navigator.cookieenabled returns a boolean value that indicates whether cookies are enabled or not.
... note: when the browser is configured to block third-party cookies, and navigator.cookieenabled is invoked inside a third-party iframe, it returns true in safari, edge spartan and ie (while trying to set a cookie in such scenario would fail).
... note: web browsers may prevent writing certain cookies in certain scenarios.
...And 2 more matches
Request.credentials - Web APIs
the credentials read-only property of the request interface indicates whether the user agent should send cookies from the other domain in the case of cross-origin requests.
... syntax var mycred = request.credentials; value a requestcredentials dictionary value indicating whether the user agent should send cookies from the other domain in the case of cross-origin requests.
... possible values are: omit: never send or receive cookies.
...And 2 more matches
Index - HTTP
WebHTTPHeadersIndex
20 clear-site-data http, http header, reference, header the clear-site-data header clears browsing data (cookies, storage, cache) associated with the requesting website.
... 54 cookie cookies, http, reference, header, request the cookie http request header contains stored http cookies previously sent by the server with the set-cookie header.
... 55 cookie2 http, obsolete, reference, header, request the obsolete cookie2 http request header used to advise the server that the user agent understands "new-style" cookies, but nowadays user agents will use the cookie header instead, not this one.
...And 2 more matches
Client-Server Overview - Learn web development
client-side cookies.
... cookies contain session data about the client, including keys that the server can use to determine their login status and permissions/accesses to resources.
... the final line contains information about the client-side cookies — you can see in this case the cookie includes an id for managing sessions (cookie: sessionid=6ynxs23n521lu21b1t136rhbv7ezngie; ...).
...url parameters or cookies).
nsICookieManager
an optional interface for accessing or removing the cookies that are in the cookie list.
...it is implemented by the @mozilla.org/cookiemanager;1 component, but should generally be accessed via services.cookies method overview void remove(in autf8string ahost, in acstring aname, in autf8string apath, in boolean ablocked, in jsval aoriginattributes); void removeall(); attributes attribute type description enumerator nsisimpleenumerator called to enumerate through each cookie in the cookie list.
... ablocked indicates if cookies from this host should be permanently blocked.
... removeall() this method is called to remove all cookies from the cookie list.
Web Console remoting - Firefox Developer Tools
examples: { "from": "conn0.netevent14", "type": "networkeventupdate", "updatetype": "requestheaders", "headers": 10, "headerssize": 425 }, { "from": "conn0.netevent14", "type": "networkeventupdate", "updatetype": "requestcookies", "cookies": 0 }, { "from": "conn0.netevent14", "type": "networkeventupdate", "updatetype": "requestpostdata", "datasize": 1024, "discardrequestbody": false }, { "from": "conn0.netevent14", "type": "networkeventupdate", "updatetype": "responsestart", "response": { "httpversion": "http/1.1", "status": "304", "statustext": "not modified", "headerssize": 194, ...
..."discardresponsebody": true } }, { "from": "conn0.netevent14", "type": "networkeventupdate", "updatetype": "eventtimings", "totaltime": 1 }, { "from": "conn0.netevent14", "type": "networkeventupdate", "updatetype": "responseheaders", "headers": 6, "headerssize": 194 }, { "from": "conn0.netevent14", "type": "networkeventupdate", "updatetype": "responsecookies", "cookies": 0 }, { "from": "conn0.netevent14", "type": "networkeventupdate", "updatetype": "responsecontent", "mimetype": "text/css", "contentsize": 0, "discardresponsebody": true } actual headers, cookies, and bodies are not sent.
... ], "headerssize": 350 } the getrequestcookies packet: { "to": "conn0.netevent15", "type": "getrequestcookies" } { "from": "conn0.netevent15", "cookies": [] } the getresponseheaders packet: { "to": "conn0.netevent15", "type": "getresponseheaders" } { "from": "conn0.netevent15", "headers": [ { "name": "date", "value": "mon, 17 sep 2012 20:05:27 gmt" }, ...
... ], "headerssize": 320 } the getresponsecookies packet: { "to": "conn0.netevent15", "type": "getresponsecookies" } { "from": "conn0.netevent15", "cookies": [] } starting with firefox 19: for all of the header and cookie values in the above packets we use longstringactor grips when the value is very long.
Using the Storage Access API - Web APIs
usage notes the storage access api is designed to allow embedded content to request access to storage that would otherwise be blocked when a user’s browser is set to block all third-party cookies.
...this is particularly true for document.cookie access, as browsers will often return an empty cookie jar when third-party cookies are blocked.
... accessing a user's cookies in an embedded cross-origin iframe in this example we show how an embedded cross-origin <iframe> can access a user’s cookies under a storage access policy that blocks third-party cookies.
... first of all, if the <iframe> is sandboxed, the embedding website needs to add the allow-storage-access-by-user-activation sandbox token to allow storage access requests to be successful, along with allow-scripts and allow-same-origin to allow it to call the api, and execute in an origin that can have cookies: <iframe sandbox="allow-storage-access-by-user-activation allow-scripts allow-same-origin"> ...
HTTP headers - HTTP
WebHTTPHeaders
cookies, storage, cache) associated with the requesting website.
... max-forwards cookies cookie contains stored http cookies previously sent by the server with the set-cookie header.
... set-cookie send cookies from the server to the user-agent.
... set-cookie2 sends cookies from the server to the user-agent, but has been obsoleted.
An overview of HTTP - HTTP
WebHTTPOverview
but while the core of http itself is stateless, http cookies allow the use of stateful sessions.
... using header extensibility, http cookies are added to the workflow, allowing session creation on each http request to share the same context, or the same state.
...basic authentication may be provided by http, either using the www-authenticate and similar headers, or by setting a specific session using http cookies.
... sessions using http cookies allows you to link requests with the state of the server.
Proxy - JavaScript
// [{ name: 'firefox', type: 'browser' }, { name: 'seamonkey', type: 'browser' }] console.log(products.types); // ['browser', 'mailer'] console.log(products.number); // 3 a complete traps list example now in order to create a complete sample traps list, for didactic purposes, we will try to proxify a non-native object that is particularly suited to this type of operation: the doccookies global object created by the "little framework" published on the document.cookie page.
... /* var doccookies = ...
... get the "doccookies" object here: https://developer.mozilla.org/docs/dom/document.cookie#a_little_framework.3a_a_complete_cookies_reader.2fwriter_with_full_unicode_support */ var doccookies = new proxy(doccookies, { get: function (otarget, skey) { return otarget[skey] || otarget.getitem(skey) || undefined; }, set: function (otarget, skey, vvalue) { if (skey in otarget) { return false; } return otarget.setitem(skey, vvalue); }, deleteproperty: function (otarget, skey) { if (skey in otarget) { return false; } return otarget.removeitem(skey); }, enumerate: function (otarget, skey) { return otarget.keys(); }, ownkeys: function (otarget, skey) { return otarget.keys(); }, has: function (otarget, skey) { return skey in otarget || otarget.hasitem(...
...{ value: vvalue, writable: true, enumerable: true, configurable: false } : undefined; }, }); /* cookies test */ console.log(doccookies.my_cookie1 = 'first value'); console.log(doccookies.getitem('my_cookie1')); doccookies.setitem('my_cookie1', 'changed value'); console.log(doccookies.my_cookie1); specifications specification ecmascript (ecma-262)the definition of 'proxy' in that specification.
net/xhr - Archive of obsolete content
if transmission of cookies isn't prevented, malicious code could access sensitive data.
... functions forceallowthirdpartycookie(xhr) force relevant cookies to be sent with this xmlhttprequest even if normally they would not be.
... parameters xhr: xmlhttprequest the xmlhttprequest to allow third-party cookies for.
Supporting private browsing mode - Archive of obsolete content
this includes cookies, history information, download information, and so forth.
... when private browsing mode is enabled, temporary, databases are created to be used for cookies and local storage; these databases are thrown away when private browsing mode is turned off, and the regular databases are re-activated.
... all data related to pages the user has visited, including cookies and form data.
Cookie - MDN Web Docs Glossary: Definitions of Web-related terms
cookies are used to personalize a user’s web experience with a website.
...a user can customize their web browser to accept, reject, or delete cookies.
... cookies can be set and modified at the server level using the set-cookie http header, or with javascript using document.cookie.
Commenting IDL for better documentation
example this is an example of what the sample interface document idl would look like: /** * @brief a make-believe interface that eats and enjoys cookies.
... * 0 means "stuffed to the brim with cookies" and 100 means "i'm so empty of * cookies!
... * * @param language the localization identification indicating the language in * which the cookie monster is to express his love of cookies.
Blocked: All storage access requests
message firefox: cookieblockedall=request to access cookies or storage on “x” was blocked because we are blocking all storage access requests.
... a request to access cookies or storage was blocked because the browser is blocking all storage access.
... the permission can be changed or removed by: going to preferences > content blocking in the custom content blocking section, selecting a value other than all cookies for the cookies item if the resource that is being blocked doesn't need authentication, you can fix the warning message by adding a crossorigin="anonymous" attribute to your element.
Blocked: Custom cookie permission
message firefox: cookieblockedbypermission=request to access cookies or storage on “x” was blocked because of custom cookie permission.
... a request to access cookies or storage was blocked because there's a custom user-defined permission set.
... the permission can be changed or removed by: going to preferences > content blocking > cookies and site data clicking on the manage permissions button and updating the listed exceptions ...
Blocked: All third-party storage access requests
message firefox: cookieblockedforeign=request to access cookies or storage on “x” was blocked because we are blocking all third-party storage access requests and content blocking is enabled.
... a request to access cookies or storage was blocked because it came from a third-party (a different origin) and content blocking is enabled.
... the permission can be changed or removed by: going to preferences > content blocking and either adding an exception with the manage exceptions… button choosing the custom content blocking and unchecking the cookies checkbox if the resource that is being blocked doesn't need authentication, you can fix the warning message by adding a crossorigin="anonymous" attribute to the relevant element.
nsICookiePermission
methods canaccess() tests whether or not the given uri/channel may access the cookie database, either to set or get cookies.
... nscookieaccess canaccess( in nsiuri auri, in nsiuri afirsturi, obsolete since gecko 1.9 in nsichannel achannel ); parameters auri the uri trying to access cookies.
...nsiuri getoriginatinguri( in nsichannel achannel ); parameters achannel the channel for the load trying to get or set cookies.
nsICookiePromptService
last changed in gecko 1.9 (firefox 3) inherits from: nsisupports method overview long cookiedialog(in nsidomwindow parent, in nsicookie cookie, in acstring hostname, in long cookiesfromhost, in boolean changingcookie, out boolean rememberdecision); constants constant value description deny_cookie 0 holds the value for a denying the cookie.
... long cookiedialog( in nsidomwindow parent, in nsicookie cookie, in acstring hostname, in long cookiesfromhost, in boolean changingcookie, out boolean rememberdecision ); parameters parent the parent window for the dialog.
...cookiesfromhost the number of cookies there are already for this host.
Mozilla
cookies in mozilla suggestions as to needed documentation can be directed to mike connor.
... cookies preferences in mozilla these preferences apply to most mozilla products (including firefox and seamonkey), however they are application-specific, so not all of them may apply to you.
... creating sandboxed http connections starting with gecko 1.8.1 (firefox 2), it is possible to create sandboxed http connections which don't affect the user's cookies.
Index - Firefox Developer Tools
105 storage inspector cookies, dev tools, firefox, guide, indexeddb, local storage, session storage, storage, tools the storage inspector enables you to inspect various types of storage that a web page can use.
...for each resource, you'll see: 107 cookies cookies, dev tools, firefox, guide, storage, storage inspector, tools, l10n:priority when you select an origin inside the cookies storage type from the storage tree, all the cookies present for that origin will be listed in a table.
... the cookies table has the following columns: 108 extension storage dev tools, extension storage, firefox, guide, storage, storage inspector, tools, l10n:priority this storage type is only shown when debugging extensions.
Network request details - Firefox Developer Tools
the tabs at the top of this pane enable you to switch between the following pages: headers messages (only for websocket items) cookies params response cache timings security (only for secure pages) stack trace (only when the request has a stack trace, e.g.
... cookies tab this tab lists full details of any cookies sent with the request or response: as with headers, you can filter the list of cookies displayed.
... the full list of cookie attributes is shown—see the following screenshot showing response cookies with further attributes shown.
Using Fetch - Web APIs
fetch() won't can receive cross-site cookies; you can’t can establish a cross site session using fetch.
... fetch won’t send cookies, unless you set the credentials init option.
...similarly, inserting set-cookie into a response header is not allowed: serviceworkers are not allowed to set cookies via synthesized responses.
Fetch API - Web APIs
WebAPIFetch API
fetch() won't can receive cross-site cookies; you can’t can establish a cross site session using fetch.
... fetch() won’t send cookies, unless you set credentials: 'same-origin'.
... if you are targetting older versions of these browsers, be sure to include credentials: 'same-origin' init option on all api requests that may be affected by cookies/user login state.
Browser storage limits and eviction criteria - Web APIs
we term them "quota clients" in this context: indexeddb asm.js caching cache api cookies note: in firefox, web storage will soon start to use the same storage management tools too, as described in this document.
...local storage data and cookies are still stored, but they are ephemeral — the data is deleted when you close the last private browsing window.
...this will only be evicted if the user chooses to (for example, in firefox you can choose to delete all stored data or only stored data from selected origins by going to preferences and using the options under privacy & security > cookies & site data).
XMLHttpRequest.withCredentials - Web APIs
the xmlhttprequest.withcredentials property is a boolean that indicates whether or not cross-site access-control requests should be made using credentials such as cookies, authorization headers or tls client certificates.
... in addition, this flag is also used to indicate when cookies are to be ignored in the response.
...the third-party cookies obtained by setting withcredentials to true will still honor same-origin policy and hence can not be accessed by the requesting script through document.cookie or from response headers.
Link prefetching FAQ - HTTP
privacy implications along with the referral and url-following implications already mentioned above, prefetching will generally cause the cookies of the prefetched site to be accessed.
... (for example, if you google amazon, the google results page will prefetch www.amazon.com, causing amazon cookies to be sent back and forth.
... you can block 3rd party cookies in firefox, see disabling third party cookies.) what about...?
Source code directories overview - Archive of obsolete content
these include: cookies, irc, wallet, dom inspector, p3p, schema validation, spellchecker, transformiix, typeaheadfind, javascript debugger, xforms, etc.
... components contains the alerts, autocomplete, command line interface, console, cookies, download manager, filepicker, history, password manager, typeaheadfind, view source, etc.
XUL accessibility guidelines - Archive of obsolete content
for example, under the privacy section of preferences there are three groupboxes captioned: history, cookies, and private data.
... if the user were to tab to the "exceptions..." button they would hear "cookies {pause} exceptions {pause} button." the next tab would read "cookies {pause} keep until {pause} they expire {pause} one of three {pause} combobox." if the screen reader only read the label, then the user would have to guess what the "exceptions" button or the "keep until" combobox was referring to.
NPN_GetValueForURL - Archive of obsolete content
« gecko plugin api reference « browser side plug-in api summary provides information to a plugin which is associated with a given url, for example the cookies or preferred proxy.
... when multiple cookies are returned for a given url, the format of the return value is: cookie1=value1;cookie2=value2;cookie3=value3 len out parameter.
NPN_SetValueForURL - Archive of obsolete content
« gecko plugin api reference « browser side plug-in api summary allows a plugin to change the stored information associated with a url, in particular its cookies.
... description this entry point is designed to allow plugins to affect the cookies sent by the browser back to the server.
NPAPI plugin reference - Archive of obsolete content
npn_getvalueforurl provides information to a plugin which is associated with a given url, for example the cookies or preferred proxy.
... npn_setvalueforurl allows a plugin to change the stored information associated with a url, in particular its cookies.
Introduction to the server side - Learn web development
the request includes a url identifying the affected resource, a method that defines the required action (for example to get, delete, or post the resource), and may include additional information encoded in url parameters (the field-value pairs sent via a query string), as post data (data sent by the http post method), or in associated cookies.
...this information is an example of session information stored in cookies.
Embedding API for Accessibility
us (or will give us), for accessibility: functionality implementation works as of images setintpref("network.image.imagebehavior", behavior); /* behavior: 0=accept, 1=accept images from originating server only, 2=no images */ moz 0.8 cookies setintpref("network.cookie.cookiebehavior", behavior); /* behavior: 0=accept, 1=accept cookies from originating server only, 2=no cookies */ setboolpref("network.cookie.warnaboutcookies", boolwarn); moz 0.8 fonts setcharpref("font.name.monospace.x-we...
... we have a permissions system for cookies and images based on url's.
Blocked: Storage access requests from trackers
message firefox: cookieblockedtracker=request to access cookies or storage on “x” was blocked because it came from a tracker and content blocking is enabled.
... a request to access cookies or storage was blocked because the browser identified it as coming from a tracker and content blocking is enabled.
HTMLIFrameElement.purgeHistory()
it only deletes history, not cookies or other stored information.
... note: to delete cookies for a firefox os app, you could call clearbrowserdata() on the actual app itself.
Localization content best practices
as a native english speaker, you might find it natural to use delete-cookie = delete cookie delete-cookies = delete cookies in firefox this should be # localization note (delete-cookies): semi-colon list of plural forms.
... # see: http://developer.mozilla.org/en/docs/localization_and_plurals # #1 is the number of cookies to delete # example: delete-cookies = delete #1 cookie;delete #1 cookies important: always include the localization note with this format if you use a plural form in firefox.
Mozilla Web Services Security Model
please do not depend on anything in it being correct for security.) to prevent the browser from being used as a tool for web sites to obtain priveleges that belong to the browser's user (such as being behind a firewall or getting the benefits of the user's cookies), web browsers restrict what web pages can do when accessing things in other domains.
... allow all services on a site to be accessed from any web page note that this is only a sensible thing to do if nothing on the site serves content based on cookies, http authentication, ip address / domain origin, or any other method of authentication.
Observer Notifications
cookies these topics indicate whenever a cookie has been changed (added, changed, cleared, or deleted) or its setting rejected by the browser.
... see nsicookieservice for details.
nsICookieConsent
nscookiestatus getconsent( in nsiuri uri, in nsihttpchannel httpchannel, in boolean isforeign, out nscookiepolicy policy ); parameters uri the uri to find the policy for.
... return value returns nscookiestatus.
nsISessionStore
note: the returned string does not include cookies.
... if you need to retrieve cookies as well, you should use getwindowstate() instead.
nsIWebBrowserPersist
persist_flags_force_allow_cookies 65536 force relevant cookies to be sent with this load even if normally they wouldn't be.
...cookies, permanent cache, etc.) null must only be passed in the event that no such relevant context exists (ie.
Browser Side Plug-in API - Plugins
npn_getvalueforurl provides information to a plug-in which is associated with a given url, for example the cookies or preferred proxy.
... npn_setvalueforurl allows a plug-in to change the stored information associated with a url, in particular its cookies.
Gecko Plugin API Reference - Plugins
npn_getvalueforurl provides information to a plug-in which is associated with a given url, for example the cookies or preferred proxy.
... npn_setvalueforurl allows a plug-in to change the stored information associated with a url, in particular its cookies.
Network request list - Firefox Developer Tools
cookies: the number of request cookies associated to the request.
... set-cookies: the number of response cookies associated to the request.
Basic concepts - Web APIs
<iframe> content) can access the indexeddb store for the origin it is embedded into, unless the browser is set to never accept third party cookies (see bug 1147821.) definitions this section defines and explains terms used in the indexeddb api.
...many browsers have settings that let users wipe all data stored for a given website, including cookies, bookmarks, stored passwords, and indexeddb data.
Web Storage API - Web APIs
the web storage api provides mechanisms by which browsers can store key/value pairs, in a much more intuitive fashion than using cookies.
... note: access to web storage from third-party iframes is denied if the user has disabled third-party cookies (firefox implements this behaviour from version 43 onwards.) note: web storage is not the same as mozstorage (mozilla's xpcom interfaces to sqlite) or the session store api (an xpcom storage utility for use by extensions).
XMLHttpRequest() - Web APIs
most important, this means that cookies will not be sent unless explicitly added using setrequestheader.
...this can't be combined with sending cookies or other user credentials.
<img>: The Image Embed element - HTML: Hypertext Markup Language
WebHTMLElementimg
allowed values: anonymous a cors request is sent with credentials omitted (that is, no cookies, x.509 certificates, or authorization request header).
... use-credentials the cors request is sent with any credentials included (that is, cookies, x.509 certificates, and the authorization request header).
Cookie - HTTP
WebHTTPHeadersCookie
the cookie http request header contains stored http cookies previously sent by the server with the set-cookie header.
... the cookie header is optional and may be omitted if, for example, the browser's privacy settings block cookies.
Set-Cookie2 - HTTP
the obsolete set-cookie2 http response header used to send cookies from the server to the user agent, but has been deprecated by the specification.
...<non-zero-digit> set-cookie2: <cookie-name>=<cookie-value>; path=<path-value> set-cookie2: <cookie-name>=<cookie-value>; port=<port-number> set-cookie2: <cookie-name>=<cookie-value>; secure set-cookie2: <cookie-name>=<cookie-value>; version=<version-number> // multiple directives are also possible, for example: set-cookie2: <cookie-name>=<cookie-value>; domain=<domain-value>; secure // multiple cookies are seperated by a comma set-cookie2: <cookie-name>=<cookie-value>, <cookie-name>=<cookie-value>, ...
431 Request Header Fields Too Large - HTTP
WebHTTPStatus431
this lets users attempt to fix the problem, such as by clearing their cookies.
... servers will often produce this status if: the referer url is too long there are too many cookies sent in the request status 431 request header fields too large specifications specification title rfc 6585, section 5: 431 request header fields too large additional http status codes ...
Mixed content - Web security
in the case of passive content, the threat is lower (the page may contain misleading content, or the user's cookies may be stolen).
...if the webpage is public and has no sensitive data about the user, using mixed active content still provides the attacker with the opportunity to redirect the user to other http pages and steal http cookies from those sites.
request - Archive of obsolete content
se to be interpreted as latin-1, use overridemimetype: var request = require("sdk/request").request; var quijote = request({ url: "http://www.latin1files.org/quijote.txt", overridemimetype: "text/plain; charset=latin1", oncomplete: function (response) { console.log(response.text); } }); quijote.get(); anonymous boolean if true, the request will be sent without cookies or authentication headers.
Examples and demos from articles - Archive of obsolete content
[article] code snippets and tutorials javascript complete cookies reader/writer with full unicode support this little framework consists of a complete cookies reader/writer with unicode support.
Code snippets - Archive of obsolete content
browser-oriented code tabbed browser code (firefox/seamonkey) basic operations, such as page loading, with the tabbed browser, which is the heart of mozilla's browser applications cookies reading, writing, modifying, and removing cookies page loading code used to load pages, reload pages, and listen for page loads interaction between privileged and non-privileged code how to communicate from extensions to websites and vice-versa.
Displaying web content in an extension without security issues - Archive of obsolete content
the issue that is commonly overlooked here is that the rss feed could contain some malicious javascript code and it would then execute with the privileges of the extension — meaning that it would get full access to the browser (cookies, history etc) and to user’s files.
Local Storage - Archive of obsolete content
it's also used for storing cookies, form inputs, and others.
Security best practices in extensions - Archive of obsolete content
sandboxed http connections the main purpose of sandboxed http connections is to interact with a web service, without interfering with the cookies set in the browser by that service/site.
Session store API - Archive of obsolete content
new windows are opened as required (one for each window that was saved in the session store), and cookies and the list of recently closed tabs are restored.
Index of archived content - Archive of obsolete content
ooting unit testing using xpcom without chrome using third-party modules (jpm) bootstrapped extensions code snippets alerts and notifications autocomplete bookmarks boxes canvas code snippets cookies customizing the download progress bar delayed execution dialogs and prompts downloading files drag & drop embedding svg examples and demos from articles file i/o finding window handles forms related code snippets html in xul for rich tooltips html to dom ...
MenuButtons - Archive of obsolete content
<toolbarbutton type="menu" image="cookies.png"> <menupopup> <menuitem label="block cookies" type="checkbox"/> <menuitem label="clear cookies"/> </menupopup> </toolbarbutton> the 'menu-button' button the 'menu-button' type of button is used when you want to attach a menu to a button but want to have a default action carried out when the button is pressed by itself.
Archived Mozilla and build documentation - Archive of obsolete content
this includes cookies, history information, download information, and so forth.
Cross-site scripting - MDN Web Docs Glossary: Definitions of Web-related terms
the user's browser cannot detect the malicious script is untrustworthy, and so gives it access to any cookies, session tokens, or other sensitive site-specific information, or lets the malicious script rewrite the html content.
Netscape Navigator - MDN Web Docs Glossary: Definitions of Web-related terms
netscape could display a webpage while loading, used javascript for forms and interactive content, and stored session information in cookies.
Page prediction - MDN Web Docs Glossary: Definitions of Web-related terms
also, pre-loaded websites and embedded content can set and read their cookies as if they were visited even if they weren't.
Session Hijacking - MDN Web Docs Glossary: Definitions of Web-related terms
protection against session hijacking create a secure communication channel with ssh (secure shell) pass authentication cookies over https connection implement logout functionality so the user can end the session generate the session id after successful login pass encrypted data between the users and the web server use a string or long random number as a session key learn more general knowledge session hijacking on wikipedia ...
Site - MDN Web Docs Glossary: Definitions of Web-related terms
the concept of a site is used in samesite cookies, as well as a web application's cross-origin resource policy.
Making decisions in your code — conditionals - Learn web development
tay in my home country and work on my father's farm, or should i move to america and study astrophysics?") conditional statements allow us to represent such decision making in javascript, from the choice that must be made (for example, "one cookie or two"), to the resulting outcome of those choices (perhaps the outcome of "ate one cookie" might be "still felt hungry", and the outcome of "ate two cookies" might be "felt full, but mom scolded me for eating all the cookies".) if...else statements let's look at by far the most common type of conditional statement you'll use in javascript — the humble if...else statement.
Server-side web frameworks - Learn web development
it contains a development server and debugger, and includes support for jinja2 templating, secure cookies, unit testing, and restful request dispatching.
Implementing feature detection - Learn web development
if you look at the dom inspector of your browser's developer tools, you'll see that modernizr has updated your <html> class value like so: <html class="js no-htmlimports sizes flash transferables applicationcache blobconstructor blob-constructor cookies cors ...and loads more values!> it now contains a large number of classes that indicate the support status of different technology features.
Strategies for carrying out testing - Learn web development
private browsing in firefox, incognito mode in chrome) so things like cookies and temp files are not saved.
Index
170 storage access policy: block cookies from trackers privacy, storage access policy, tracking protection firefox includes a new storage access policy that blocks cookies and other site data from third-party tracking resources.
Partitioned: All third-party storage access requests
a request to access cookies or storage was partitioned because it came from a third-party (a different origin) and dynamic first-party isolation is enabled.
Errors
you can find further information about them by clicking on the links below: a request to access cookies or storage was blocked because of a custom cookie permission blocked because it came from a tracker and content blocking is enabled blocked because we are blocking all storage access requests blocked because we are blocking all third-party storage access requests and content blocking is enabled granted partitioned access because it came from a third-party and dynamic first-party isolation is enabled ...
Tracking Protection
if tracking cookies were present, you would be able to view the list by clicking on "blocking tracking cookies" in the above image to view the following popup: you can click "manage content blocking" to change the blocking settings: how does firefox choose what to block?
Privacy
storage access policy: block cookies from trackerstracking protection ...
Firefox Operational Information Database: SQLite
in the manager, select the database you want to explore in the '(select profile database)' pulldown, click 'go', select one of the tables listed in the left column and see the current contents of the database in the 'browse & search' tab.) some databases are used by the browser itself, others are used by applications that you have installed or used; for example: content-prefs.sqlite cookies.sqlite download.sqlite formhistory.sqlite persmissions.sqlite places.sqlite search.sqlite signons.sqlite webappstore.sqlite ...
Browser API
htmliframeelement.purgehistory() clears all the resources (cookies, localstorage, cache, etc.) associated with the browser <iframe>.
Services.jsm
ation shell service blocklist nsiblocklistservice blocklist service cache nsicacheservice cache service cache2 nsicachestorageservice cache storage service clipboard nsiclipboard clipboard console nsiconsoleservice error console service contentprefs nsicontentprefservice content preferences service cookies nsicookiemanager2 cookie manager 2 service cpmm nsimessagesender child process message manager4 crashmanager crashmanager.jsm dirsvc nsidirectoryservice nsiproperties directory service domstoragemanager nsidomstoragemanager dom storage manager domrequest nsidomrequestservice domrequest service download...
JS::CompileOptions
this allows an attack by which a malicious website loads a sensitive file (say, a bank statement) cross-origin (using the user's cookies), and sniffs the generated syntax errors (via a window.onerror handler) for juicy morsels of its contents.
JSErrorReport
this allows an attack by which a malicious website loads a sensitive file (say, a bank statement) cross-origin (using the user's cookies), and sniffs the generated syntax errors (via a window.onerror handler) for juicy morsels of its contents.
nsICookie
status nscookiestatus holds the p3p status of cookie.
nsICookie2
note: that expiry time will also be honored for session cookies; thus, whichever is the more restrictive of the two will take effect.
nsICookieAcceptDialog
cookiesfromhost 3 value for holding the cookie from the host.
getFile
dir "tmpls" ns_win_common_startmenu_dir "cmstrt" ns_win_common_programs_dir "cmprgs" ns_win_common_startup_dir "cmstrt" ns_win_common_desktop_directory "cmdeskp" ns_win_appdata_dir "appdata" ns_win_local_appdata_dir "localappdata" ns_win_printhood "prnthd" ns_win_cookies_dir "cookd" available on unix only these locations are supported only on unix builds of firefox os.
nsIDocShell
internal_load_flags_force_allow_cookies 0x20 used to indicate that load_flags_force_allow_cookies was passed as one of the flags to loaduri().
nsIHttpChannel
this method allows, for example, the cookies module to add "cookie" headers to the outgoing http request.
nsIHttpChannelInternal
forceallowthirdpartycookie boolean force relevant cookies to be sent with this load even if normally they would not be.
nsIPermission
the nsipermission interface defines a "permission" object, which is used to allow or block objects (for example cookies, images) from certain sites based on user preferences.
nsIPermissionManager
the nsipermissionmanager interface is used to persistently store permissions for different object types (cookies, images, and so on) on a site-by-site basis.
nsIPrivateBrowsingService
in addition, temporary, databases are created to be used for cookies and local storage; these databases are thrown away when private browsing mode is turned off, and the regular databases are re-activated.
nsIScriptableIO
for example: io.getfile("profile", "cookies.txt"); from an xpcom component, however, you will need to get a reference as with other components: var scriptableio = components.classes["@mozilla.org/io/scriptable-io;1"] .getservice(); scriptableio.getfile("profile", "cookies.txt"); method overview nsifile getfile(in astring alocation, in astring afilename); nsifile getfilewithpath(...
nsIXMLHttpRequest
for instance, as done in example 2, the flag of load_anonymous is added, this strips all user data (cookies, tokens, etc).
XPCOM Interface Reference
sicontentprefnsicontentprefcallback2nsicontentprefobservernsicontentprefservicensicontentprefservice2nsicontentsecuritypolicynsicontentsniffernsicontentviewnsicontentviewmanagernsicontentviewernsicontrollernsicontrollersnsiconverterinputstreamnsiconverteroutputstreamnsicookiensicookie2nsicookieacceptdialognsicookieconsentnsicookiemanagernsicookiemanager2nsicookiepermissionnsicookiepromptservicensicookieservicensicookiestoragensicrashreporternsicryptohmacnsicryptohashnsicurrentcharsetlistenernsicyclecollectorlistenernsidbchangelistenernsidbfolderinfonsidnslistenernsidnsrecordnsidnsrequestnsidnsservicensidomcanvasrenderingcontext2dnsidomchromewindownsidomclientrectnsidomdesktopnotificationnsidomdesktopnotificationcenternsidomelementnsidomeventnsidomeventgroupnsidomeventlistenernsidomeventtargetnsid...
XPCOM Interface Reference by grouping
nsiprotocolproxycallback nsiprotocolproxyfilter nsiprotocolproxyservice nsiproxyinfo preferences nsiiniparser nsiiniparserfactory nsiprefbranch nsiprefbranch2 nsipreflocalizedstring nsiprefservice nsistringbundle nsistringbundleservice security cookies nsicookie nsicookie2 nsicookieacceptdialog nsicookieconsent nsicookiemanager nsicookiemanager2 nsicookiepermission nsicookiepromptservice nsicookieservice nsicookiestorage nsisessionstore crypto nsicryptohash ...
Index
18 cookies in thunderbird cookies, guide, thunderbird in versions of thunderbird prior to 3 the cookie policy was very restrictive (to rss only).
Firefox Developer Tools
storage inspector inspect cookies, local storage, indexeddb, and session storage present in a page.
Cache - Web APIs
WebAPICache
console.error(' error in fetch handler:', error); throw error; }); }) ); }); storing cookies in caches the fetch api requires set-cookie headers to be stripped before returning a response object from fetch().
Document.lastModified - Web APIs
here is a possible example of how to show an alert message when the page changes (see also: javascript cookies api): if (date.parse(document.lastmodified) > parsefloat(document.cookie.replace(/(?:(?:^|.*;)\s*last_modif\s*\=\s*([^;]*).*$)|^.*$/, "$1") || "0")) { document.cookie = "last_modif=" + date.now() + "; expires=fri, 31 dec 9999 23:59:59 gmt; path=" + location.pathname; alert("this page has changed!"); } …the same example, but skipping the first visit: var nlastvisit = parsefloat(document...
Document.requestStorageAccess() - Web APIs
grant the document access to cookies and other site storage and store that fact for the purposes of future calls to document.hasstorageaccess() and requeststorageaccess().
Document - Web APIs
WebAPIDocument
document.cookie returns a semicolon-separated list of the cookies for that document or sets a single cookie.
The HTML DOM API - Web APIs
among the things added to document by the html standard are: support for accessing various information provided by the http headers when loading the page, such as the location from which the document was loaded, cookies, modification date, referring site, and so forth.
Using IndexedDB - Web APIs
<iframe> content) cannot access indexeddb if the browser is set to never accept third party cookies (see bug 1147821.) warning about browser shutdown when the browser shuts down (because the user chose the quit or exit option), the disk containing the database is removed unexpectedly, or permissions are lost to the database store, the following things happen: each transaction on every affected database (or all open databases, in the case of browser shutdown) is aborted with an aborterror.
MediaDeviceInfo.deviceId - Web APIs
it is reset when the user clears cookies.
MediaDeviceInfo - Web APIs
it is reset when the user clears cookies (for private browsing, a different identifier is used that is not persisted across sessions).
Navigator.sendBeacon() - Web APIs
window.addeventlistener("unload", function logdata() { navigator.sendbeacon("/log", analyticsdata); }); the beacon sends an http request via the post method, with all relevant cookies available when called.
NavigatorStorage - Web APIs
there are many apis which provide ways for web content to store data on a user's computer, including cookies, the web storage api (window.localstorage and window.sessionstorage), and indexeddb.
ParentNode.replaceChildren() - Web APIs
this html might look something like this: <h2>party food option list</h2> <main> <div> <label for="no">no thanks!</label> <select id="no" multiple size="10"> <option>apples</option> <option>oranges</option> <option>grapes</option> <option>bananas</option> <option>kiwi fruits</option> <option>chocolate cookies</option> <option>peanut cookies</option> <option>chocolate bars</option> <option>ham sandwiches</option> <option>cheese sandwiches</option> <option>falafel sandwiches</option> <option>ice cream</option> <option>jelly</option> <option>carrot sticks and houmous</option> <option>margherita pizza</option> <option>pepperoni pizza</option> ...
Window.open() - Web APIs
WebAPIWindowopen
this function is the lonely key to get back the handle on a window if the developer has access only to its name (the name can be saved with cookies or local storage but not the window object handle).
Window.sessionStorage - Web APIs
opening a page in a new tab or window creates a new session with the value of the top-level browsing context, which differs from how session cookies work.
WindowOrWorkerGlobalScope.fetch() - Web APIs
to automatically send cookies for the current domain, this option must be provided.
Worklet.addModule() - Web APIs
WebAPIWorkletaddModule
cookies and http authentification) when loading the module.
XMLHttpRequest.mozAnon - Web APIs
if true, the request will be sent without cookies or authentication headers.
XMLHttpRequest - Web APIs
xmlhttprequest.withcredentials is a boolean that indicates whether or not cross-site access-control requests should be made using credentials such as cookies or authorization headers.
HTML attribute: crossorigin - HTML: Hypertext Markup Language
the "anonymous" keyword means that there will be no exchange of user credentials via cookies, client-side ssl certificates or http authentication as described in the terminology section of the cors specification, unless it is in the same origin.
<figure>: The Figure with Optional Caption element - HTML: Hypertext Markup Language
WebHTMLElementfigure
iful mdn logo."> <figcaption>mdn logo</figcaption> </figure> code snippets <figure> <figcaption>get browser details using <code>navigator</code>.</figcaption> <pre> function navigatorexample() { var txt; txt = "browser codename: " + navigator.appcodename + "; "; txt+= "browser name: " + navigator.appname + "; "; txt+= "browser version: " + navigator.appversion + "; "; txt+= "cookies enabled: " + navigator.cookieenabled + "; "; txt+= "platform: " + navigator.platform + "; "; txt+= "user-agent header: " + navigator.useragent + "; "; console.log("navigatorexample", txt); } </pre> </figure> quotations <figure> <figcaption><cite>edsger dijkstra:</cite></figcaption> <blockquote>if debugging is the process of removing software bugs, then programming must be the...
Reason: CORS header 'Access-Control-Allow-Origin' missing - HTTP
in addition, the wildcard only works for requests made with the crossorigin attribute set to anonymous, and it prevents sending credentials like cookies in requests.
Content Security Policy (CSP) - HTTP
WebHTTPCSP
a complete data transmission security strategy includes not only enforcing https for data transfer, but also marking all cookies with the secure attribute and providing automatic redirects from http pages to their https counterparts.
Access-Control-Allow-Credentials - HTTP
credentials are cookies, authorization headers or tls client certificates.
Access-Control-Allow-Headers - HTTP
* (wildcard) the value "*" only counts as a special wildcard value for requests without credentials (requests without http cookies or http authentication information).
Access-Control-Allow-Methods - HTTP
* (wildcard) the value "*" only counts as a special wildcard value for requests without credentials (requests without http cookies or http authentication information).
Access-Control-Expose-Headers - HTTP
* (wildcard) the value "*" only counts as a special wildcard value for requests without credentials (requests without http cookies or http authentication information).
Cookie2 - HTTP
WebHTTPHeadersCookie2
the obsolete cookie2 http request header used to advise the server that the user agent understands "new-style" cookies, but nowadays user agents will use the cookie header instead, not this one.
Redirections in HTTP - HTTP
…while chrome displays: this webpage has a redirect loop in both cases, the user can't do much (unless a corruption is happening on their side, like a mismatch of cache or cookies).
HTTP resources and specifications - HTTP
rfc 7234 hypertext transfer protocol (http/1.1): caching proposed standard rfc 5861 http cache-control extensions for stale content informational rfc 8246 http immutable responses proposed standard rfc 7235 hypertext transfer protocol (http/1.1): authentication proposed standard rfc 6265 http state management mechanism defines cookies proposed standard draft spec cookie prefixes ietf draft draft spec same-site cookies ietf draft draft spec deprecate modification of 'secure' cookies from non-secure origins ietf draft rfc 2145 use and interpretation of http version numbers informational rfc 6585 additional http status codes proposed standard r...
HTTP
WebHTTP
http cookies how cookies work is defined by rfc 6265.
Same-origin policy - Web security
cookies use a separate definition of origins.
Subdomain takeovers - Web security
if an attacker can do this, they can potentially read cookies set from the main domain, perform cross-site scripting, or circumvent content security policies, thereby enabling them to capture protected information (including logins) or send malicious content to unsuspecting users.
Web security
redirection with 301 and 302 response codes to be written data security using http cookies an http cookie (web cookie, browser cookie) is a small piece of data that a server sends to the user's web browser.