diff options
Diffstat (limited to 'doc/apt-transport-http.1.xml')
| -rw-r--r-- | doc/apt-transport-http.1.xml | 34 |
1 files changed, 17 insertions, 17 deletions
diff --git a/doc/apt-transport-http.1.xml b/doc/apt-transport-http.1.xml index 546e47761..7426a4502 100644 --- a/doc/apt-transport-http.1.xml +++ b/doc/apt-transport-http.1.xml @@ -35,30 +35,30 @@ most used of all transports. Note that a transport is never called directly by a user but used by APT tools based on user configuration.</para> <para>HTTP is an unencrypted transport protocol meaning that the whole communication with the remote server (or proxy) can be observed by a -sufficiently capable attacker referred to commonly as man in the middle (MITM). -Such an attacker can <emphasis>not</emphasis> modify the communication to compromise -the security of your system through as APTs data security model is independent of the -chosen transport method. This is explained in detail in &apt-secure;. An overview over +sufficiently capable attacker commonly referred to as a "man in the middle" (MITM). +However, such an attacker can <emphasis>not</emphasis> modify the communication to compromise +the security of your system, as APT's data security model is independent of the +chosen transport method. This is explained in detail in &apt-secure;. An overview of available transport methods is given in &sources-list;.</para> </refsect1> <refsect1><title>Options</title> -<para>Various options are available to modify its behaviour which can be set in -an &apt-conf; file ranging from proxy configuration to workaround for specific -server insufficiencies.</para> +<para>Various options can be set in an &apt-conf; file to modify its behavior, +ranging from proxy configuration to workarounds for specific +server limitations.</para> <refsect2><title>Proxy Configuration</title> <para>The environment variable <envar>http_proxy</envar> is supported for system wide configuration. -Proxies specific to apt can be configured via the option <literal>Acquire::http::Proxy</literal>. +Proxies specific to APT can be configured via the option <literal>Acquire::http::Proxy</literal>. Proxies which should be used only for certain hosts can be specified via <literal>Acquire::http::Proxy::<replaceable>host</replaceable></literal>. Even more finegrained control -can be achieved via proxy autodetection detailed further below. +can be achieved via proxy autodetection, detailed further below. All these options use the URI format <literal><replaceable>scheme</replaceable>://[[<replaceable>user</replaceable>][:<replaceable>pass</replaceable>]@]<replaceable>host</replaceable>[:<replaceable>port</replaceable>]/</literal>. Supported URI schemes are <literal>socks5h</literal> (SOCKS5 with remote DNS resolution), <literal>http</literal> and <literal>https</literal>. -Authentification details can be supplied via &apt-authconf; instead of including it in the URI directly.</para> +Authentication details can be supplied via &apt-authconf; instead of including it in the URI directly.</para> <para>The various APT configuration options support the special value <literal>DIRECT</literal> meaning that -no proxy should be used. The environment variable <envar>no_proxy</envar> with the same propose is also supported.</para> -<para>Further more there are three settings provided for cache control with HTTP/1.1 compliant proxy caches: +no proxy should be used. The environment variable <envar>no_proxy</envar> is also supported for the same purpose.</para> +<para>Furthermore, there are three settings provided for cache control with HTTP/1.1 compliant proxy caches: <literal>Acquire::http::No-Cache</literal> tells the proxy not to use its cached response under any circumstances. <literal>Acquire::http::Max-Age</literal> sets the allowed maximum age (in @@ -70,8 +70,8 @@ the proxy from polluting its cache with (big) .deb files.</para> <refsect2><title>Automatic Proxy Configuration</title> <para><literal>Acquire::http::Proxy-Auto-Detect</literal> can be used to -specify an external command to discover the http proxy to use. The first -and only parameter is an URI denoting the host to be contacted to allow +specify an external command to discover the HTTP proxy to use. The first +and only parameter is a URI denoting the host to be contacted, to allow for host-specific configuration. APT expects the command to output the proxy on stdout as a single line in the previously specified URI format or the word <literal>DIRECT</literal> if no proxy should be used. No output @@ -93,8 +93,8 @@ disables downloading from multiple servers at the same time.</para> <para>The setting <literal>Acquire::http::Pipeline-Depth</literal> can be used to enable HTTP pipelining (RFC 2616 section 8.1.2.2) which can be beneficial e.g. on high-latency connections. It specifies how many requests are sent in a pipeline. -APT tries to detect and workaround misbehaving webservers and proxies at runtime, but -if you know that yours does not conform to the HTTP/1.1 specification pipelining can +APT tries to detect and work around misbehaving webservers and proxies at runtime, but +if you know that yours does not conform to the HTTP/1.1 specification, pipelining can be disabled by setting the value to 0. It is enabled by default with the value 10.</para> <para><literal>Acquire::http::AllowRedirect</literal> controls whether APT will follow redirects, which is enabled by default.</para> @@ -102,7 +102,7 @@ redirects, which is enabled by default.</para> User-Agent for the http download method as some proxies allow access for clients only if the client uses a known identifier.</para> <para><literal>Acquire::http::SendAccept</literal> is enabled by default and -sends a <literal>Accept: text/*</literal> header field to the server for +sends an <literal>Accept: text/*</literal> header field to the server for requests without file extensions to prevent the server from attempting content negotiation.</para> </refsect2> |