Network.http.max-persistent-connections-per-proxy: Difference between revisions

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{{wrongtitle|title=network.http.max-persistent-connections-per-proxy}}
{{preference|pref=network.http.max-persistent-connections-per-proxy}}
==Background==
==Background==
[[HTTP]] is the application-layer protocol that most web pages are transferred with. HTTP keep-alive connections can be re-used for multiple requests, as opposed to non-keep-alive connections, which are limited to one request. Using keep-alive connections improves performance. If a proxy server is configured, the total number of HTTP keep-alive connections the application can make to it is limited by this preference. If more connections are needed, they are queued until a connection "slot" is available.
[http://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol HTTP] is the application-layer protocol that most web pages are transferred with. HTTP keep-alive connections can be re-used for multiple requests, as opposed to non-keep-alive connections, which are limited to one request. Using keep-alive connections improves performance. If a proxy server is configured, the total number of HTTP keep-alive connections the application can make to it is limited by this preference. If more connections are needed, they are queued until a connection "slot" is available.


==Possible values and their effects==
==Possible values and their effects==
This preference takes values between 1 and 255 inclusive, directly corresponding to the maximum number of HTTP keep-alive connections the application can have open at once to the proxy server. (Minimo default: 2. All others default: 4.)
This preference takes values between 1 and 255 inclusive, directly corresponding to the maximum number of HTTP keep-alive connections the application can have open at once to the proxy server. (Minimo default: 2. Firefox 3: 8. All others default: 4.)


==Caveats==
==Caveats==
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==Related bugs==
==Related bugs==
* [https://bugzilla.mozilla.org/show_bug.cgi?id=103070 Bug 103070 - No new connections issued when waiting for timeout]
* [https://bugzilla.mozilla.org/show_bug.cgi?id=103070 Bug 103070 - No new connections issued when waiting for timeout]
* [https://bugzilla.mozilla.org/show_bug.cgi?id=423377 Bug 423377 - Change max-persistent-connections-per-server to 6.]


==Related preferences==
==Related preferences==
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==External links==
==External links==
* [http://www.mozilla.org/quality/networking/docs/netprefs.html Networking Preferences]
* [http://www.mozilla.org/quality/networking/docs/netprefs.html Networking Preferences]
* [http://groups.google.com/group/mozilla.dev.apps.firefox/browse_thread/thread/5eebb8c65c34c3c6/323b25cfd9211fa0 Raising network.http.max-persistent-connections-per-server? (mozilla.dev.apps.firefox)]
* [http://gemal.dk/blog/2008/03/18/firefox_3_beta_5_will_have_improved_connection_parallelism/ Firefox 3 beta 5 will have improved connection parallelism (Henrik Gemal’s blog)]


[[Category:Preferences]]
[[Category:Preferences]]
[[Category:Tweaking preferences]]

Latest revision as of 03:16, 20 March 2008

Background

HTTP is the application-layer protocol that most web pages are transferred with. HTTP keep-alive connections can be re-used for multiple requests, as opposed to non-keep-alive connections, which are limited to one request. Using keep-alive connections improves performance. If a proxy server is configured, the total number of HTTP keep-alive connections the application can make to it is limited by this preference. If more connections are needed, they are queued until a connection "slot" is available.

Possible values and their effects

This preference takes values between 1 and 255 inclusive, directly corresponding to the maximum number of HTTP keep-alive connections the application can have open at once to the proxy server. (Minimo default: 2. Firefox 3: 8. All others default: 4.)

Caveats

Recommended settings

If you are using a proxy and experience problems not being able to download multiple files, you can raise this value. It is, however, considered poor etiquette to make too many connections to a server and may lead to you being banned from that server.

First checked in

2001-11-03 by Darin Fisher

Has an effect in

  • Netscape (all versions since 6.1)
  • Mozilla Suite (all versions since 0.9.5)
  • Mozilla Phoenix (all versions)
  • Mozilla Firebird (all versions)
  • Mozilla Firefox (all versions)
  • SeaMonkey (all versions)
  • Camino (all versions)
  • Minimo (all versions)

Related bugs

Related preferences

External links