Network.http.max-connections-per-server

From MozillaZine Knowledge Base

The title given to this article is incorrect due to technical limitations. The correct title is network.http.max-connections-per-server.

This article describes the preference network.http.max-connections-per-server. To add, delete, or modify this preference, you will need to edit your configuration — do not edit this article.

1 Background
2 Possible values and their effects
3 Caveats
4 Recommended settings
5 First checked in
6 Has an effect in
7 Related bugs
8 Related preferences
9 External links

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Background

HTTP is the application-layer protocol that most web pages are transferred with. The total number of HTTP connections the application can make to a single server is limited by this preference. If more connections are needed, they are queued until a connection "slot" is available.

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Possible values and their effects

This preference takes values between 1 and 255 inclusive, directly corresponding to the maximum number of HTTP connections Mozilla can have open at once. (Minimo default: 2. All others default: 8. Firefox 3: 15)

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Caveats

If you are using a proxy, the proxy server - not the server the content is coming from - is the server affected, so this effectively limits the maximum number of total connections.
The maximum number of connections to all servers is controlled by network.http.max-connections.

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Recommended settings

If you experience problems not being able to download multiple files from a site, 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.

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