Mozilla 网络相关首选项

受众

质量保证测试员、开发者以及熟知网络内部原理的骨灰级用户。
要想获取关于首选项（包括如何编辑）的通用技术文档，请参阅“有关 Mozilla 首选项的简要指南”一文。

本文的目标是准确地记录有关 Core-Necko 的行为及是否在 Firefox 中默认存在的信息。

The sections are in roughly alphabetical + functional order. The preferences are in order of usage by the UI (which is not often alphabetical order). Relevant bugs are provided only when absolutely necessary.

Note: Do not change any of these via about:config unless you know what you are doing. If you are uncertain what that phrase means, you probably do not.

If you qualify, you are probably one or more of the following:

You have a feature-spec or code-level understanding of the preference.
You are doing testing and have a clear performance metric.
You are doing this in conjunction with a packet trace to monitor Necko's changed behavior.

原始文档信息

首选项

HTTP（本部分仍在建设中）

首选项名称	可接受的值	首选项是否默认存在及其他说明
`general.useragent.contentlocale`	string
`general.useragent.misc`	(major version number) string
`general.useragent.security`	string
`network.http.accept-encoding`	`gzip,deflate` (default string)	no UI
`network.http.accept.default`	`text/xml,application/xml, application/xhtml+xml,text/html;` `q=0.9,text/plain;` `q=0.8,video/x-mng,image/png, image/jpeg,image/gif;` `q=0.2,/;q=0.1`
`network.http.default-socket-type`	(empty) default	?
`network.http.keep-alive`	`true` (default)
`network.http.keep-alive.timeout`	`30`	no UI
`network.http.max-connections`	`96`
`network.http.max-connections-per-server`	`32`
`network.http.max-persistent-connections-per-proxy`	`4`
`network.http.max-persistent-connections-per-server`	`8`
`network.http.pipelining`	`True`	? (on in mozilla, greyed)
`network.http.pipelining.firstrequest`	`True`
`network.http.pipelining.maxrequests`	`8`	Hard-coded to 8 max so 30 will have no greater affect
`network.http.proxy.keep-alive`	`true` (default)
`network.http.proxy.pipelining`	`True`	? (on in mozilla, greyed)
`network.http.proxy.version`	`1.1` (default) `1.0`
`network.http.redirection-limit`	`20`
`network.http.request.max-start-delay`	`10`
`network.http.sendRefererHeader`	`2`
`network.http.sendSecureXSiteReferrer`	`true`
`network.http.use-cache`	`true`
`network.http.version`	`1.1` (default) `1.0`

文件

首选项名称	Acceptable Values	Preferences UI and comments
`security.checkloaduri`	`true` (default) `false`	No UI `checkloaduri` will disable file:// URLs on pages from a network (http: https: ftp:) source, for security reasons. Errors are sent to the javascript console, not to the user via dialog box. This preference only works in Gecko versions before 1.8 (so Firefox 1.0 and Mozilla Suite builds). In Firefox 1.5 and Seamonkey 1.0 this preference no longer has an effect.

FTP（另请参见“代理”部分）

首选项名称	Acceptable Values	Preferences UI (in bold) and comments
`advanced.mailftp`	`false` (default) `true`	Preferences \| Advanced \| "[x] Set this email address as anonymous FTP password:" If false, FTP uses "`mozilla@example.com`" as anonymous FTP password (bug 101027) If true, FTP uses contents of `network.ftp.anonymous_password` for anonymous FTP password (bug 57763 comment 28)
`network.ftp.anonymous_password`	`empty` (default) any text string	Preferences \| Advanced \| (under "[ ] Set this email address as anonymous FTP password:") [text field] If empty, FTP uses "`mozilla@example.com`" as anonymous FTP password.
`network.ftp.idleConnectionTimeout`	`300` (default) any integer	No UI Measured in seconds The open connection can prevent other FTP clients on your system from connecting to sites that allow only one control connection (bug 117875)
`network.dir.format`	`0` = HTML view `1` = raw view `2` = HTML view `3` = XUL view	Preferences \| Debug \| Networking Networking Directory Listing Format ( ) HTML ( ) XUL (tree-based)

缓存

首选项名称	Acceptable Values	Preferences UI (in bold) and comments
`browser.cache.disk.capacity`	`256000` (default) any integer (in KB)	Preferences \| Advanced \| Cache Cache: [MB] MB Note: The default was 51200 prior to Gecko 9.0 (Firefox 9.0 / Thunderbird 9.0 / SeaMonkey 2.6).
`browser.cache.disk.parent_directory`	path to Cache folder in profile (default)	Cache Folder: [text box] Note: The contents of the disk and memory caches are different (a very large memory cache is not the same as pointing disk cache to memory mapped disk space (RAM disk).
`browser.cache.disk.max_entry_size`	`51200` (default) -1 = no limit	The maximum size of an entry in the disk cache. Note: Items larger than 1/8 of `browser.cache.disk.capacity` are never cached.
`browser.cache.check_doc_frequency`	`1` = Every time I view the page `0` = Once per session `3` = When the page is out of date (default) `2` = Never	Compare the page in cache to the page on the network:
`browser.cache.disk.enable`	`true` (default)	Preferences \| Debug \| Cache [x] Enable Disk Cache [x] Enable Memory Cache Disabling disk cache has the effect of setting it to zero.
`browser.cache.memory.enable`	`true` (default)
`browser.cache.memory.capacity`	any integer (in KB)	Replaced by automatic sizing in Mozilla 1.4b (bug 105344). This value overrides the application. 0 disables feature (before, `4096` = default)
`browser.cache.memory.max_entry_size`	`5120` (default) -1 = no limit	The maximum size of an entry in the memory cache (in KB). Note: Items larger than 90% of `browser.cache.memory.capacity` are never cached.
`network.http.use-cache`	`true` (default)	no UI
`browser.cache.disk_cache_ssl`	`false` (default)	no UI, added in 1.6a (see bug 205921)
`network.prefetch-next`	`False`	Preferences \| Advanced \| Cache: Link Prefetching [x] Prefetch web pages when idle, so that links in web page designed for prefetching can load faster.
`browser.cache.disk.smart_size.first_run`	`true` (default)	Indicates whether or not this is the first time smart sizing has been used.
`browser.cache.disk.smart_size.enabled`	`true` (default)	Indicates whether or not smart sizing of the disk cache is enabled.

DNS

首选项名称	Acceptable Values	Preferences UI (in bold) and comments
`network.dnsCacheExpiration`	`60` (seconds)	default pref-less, not visible in about:config. Create and set both values to "0" to disable.
`network.dnsCacheEntries`	`20` (entries)

Cookie

The old section in this document was removed because of dwitte's cookies re-write. Please see: Cookies Preferences in Mozilla

代理

首选项名称	Acceptable Values	Preferences UI (in bold) and comments
`network.proxy.type`	`0` = direct `1` = manual `2` = PAC `3` = mapped to 0 `4` = WPAD	Preferences \| Advanced \| Proxies Configure Proxies to Access the Internet ( ) Direct connection to the internet ( ) Auto-detect proxy settings (new in 1.8) ( ) Manual proxy configuration ( ) Automatic proxy configuration URL 3 was old Communicator value for DIRECT.
`network.proxy.http`	<Protocol> Proxy: hostname or IPv4 is acceptable. IPv6 needs to be tested. Port: 0 will cause server:port preference for that manual proxy type to be ignored. 1-65xxx is valid range	Affects `http:` URLs
`network.proxy.http_port`		Affects `http:` URLs
`network.proxy.ssl`		Affects `https:` URLs Possibly affects SIMAP and SNEWS
`network.proxy.ssl_port`		Affects `https:` URLs Possibly affects SIMAP and SNEWS
`network.proxy.ftp`		Affects `ftp:` URLs
`network.proxy.ftp_port`		Affects `ftp:` URLs
`network.proxy.gopher` 已废弃 Gecko 2.0		Affects `gopher:` URLs
`network.proxy.gopher_port` 已废弃 Gecko 2.0		Affects `gopher:` URLs
`network.proxy.socks`		Used when application-specific proxy is not configured. Possibly affects other protocols
`network.proxy.socks_port`
`network.proxy.socks_version`	`5` (default) `4`	Communicator supported only SOCKS V4.
`network.proxy.no_proxies_on`	`localhost, 127.0.0.1` (default) string of comma delimited fqdn's, hostnames, IPv4 addresses and CDIR blocks. See No Proxy For configuration.	Localhost is not proxied by default, bug 31510.
`network.proxy.autoconfig_url`	empty (default) URL string	must be absolute URl, no hostname

在线

Preference Name	Acceptable Values	Preferences UI (in bold) and comments
`network.online`	`true` = Mozilla is online (default) `false` = Mozilla is offline	Necko updates the offline\|online status to this value. Changing this value does not change the actual networking status. Value is not updated if "Ask me for online state at startup" was selected for the current profile (bug 229677).
`offline.startup_state`	`0` = use network.online (default) `1 = prompt user`	Preferences: Mail & Newsgroups \| Offline \| When starting up: (Pref affects all modules, but was moved from Pref root, bug 202529) [x] Remember previous online state (Uses network.online to set online\|offline status at startup) [ ] Ask me for online state at startup (Unlike Communicator, prompt always appears, bug 239564)

Gopher（另请参见“代理”部分）

Preference Name	Acceptable Values	Comments (bold for areas that user configures)
`network.dir.format`	see FTP 已废弃 Gecko 2.0

不推荐修改（Unsupported）

Preference Name	Acceptable Values	Comments (bold for areas that user configures)
`browser.xul.error.pages.enabled`	`false` (default) `true`	Does not appear in about.config unless added explicitly. See bug 28586)
`network.protocol-handler.external.SCHEME`	`false` (default) `true`	Mac+Windows: sends URLs of <SCHEME> to the default OS handler Linux/UNIX: sends URLs to application For example: `network.protocol-handler.external.mailto==true` is used by Phoenix/Firebird/Firefox to access default mailers. Handlers loaded before prefs are read cannot be redirected (e.g. file:)

已过时/已移除（此列表不全）

browser.cache.enable
browser.cache.disk.directory
networking.proxy.wais
networking.proxy.wais_port
network.http.connect.timeout
network.http.proxy.ssl.connect

Under Investigation

offline.startup_state

Author(s): Benjamin Chuang
Last Updated Date: July 26, 2007
Copyright Information: Portions of this content are © 1998–2007 by individual mozilla.org contributors; content available under a Creative Commons license | Details.

摘要

受众

概观