This is ../../info/url, produced by makeinfo version 4.11 from url.texi. INFO-DIR-SECTION World Wide WebINFO-DIR-SECTION Emacs START-INFO-DIR-ENTRY * URL: (url). URL loading package. END-INFO-DIR-ENTRY This file documents the Emacs Lisp URL loading package. Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, with the Front-Cover texts being "A GNU Manual," and with the Back-Cover Texts as in (a) below. A copy of the license is included in the section entitled "GNU Free Documentation License". (a) The FSF's Back-Cover Text is: "You have the freedom to copy and modify this GNU manual. Buying copies from the FSF supports it in developing GNU and promoting software freedom."  File: url, Node: Top, Next: Getting Started, Up: (dir) URL *** This file documents the Emacs Lisp URL loading package. Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, with the Front-Cover texts being "A GNU Manual," and with the Back-Cover Texts as in (a) below. A copy of the license is included in the section entitled "GNU Free Documentation License". (a) The FSF's Back-Cover Text is: "You have the freedom to copy and modify this GNU manual. Buying copies from the FSF supports it in developing GNU and promoting software freedom." * Menu: * Getting Started:: Preparing your program to use URLs. * Retrieving URLs:: How to use this package to retrieve a URL. * Supported URL Types:: Descriptions of URL types currently supported. * Defining New URLs:: How to define a URL loader for a new protocol. * General Facilities:: URLs can be cached, accessed via a gateway and tracked in a history list. * Customization:: Variables you can alter. * GNU Free Documentation License:: The license for this documentation. * Function Index:: * Variable Index:: * Concept Index::  File: url, Node: Getting Started, Next: Retrieving URLs, Prev: Top, Up: Top 1 Getting Started ***************** "Uniform Resource Locators" (URLs) are a specific form of "Uniform Resource Identifiers" (URI) described in RFC 2396 which updates RFC 1738 and RFC 1808. RFC 2016 defines uniform resource agents. URIs have the form SCHEME:SCHEME-SPECIFIC-PART, where the SCHEMEs supported by this library are described below. *Note Supported URL Types::. FTP, NFS, HTTP, HTTPS, `rlogin', `telnet', tn3270, IRC and gopher URLs all have the form SCHEME://[USERINFO@]HOSTNAME[:PORT][/PATH] where `[' and `]' delimit optional parts. USERINFO sometimes takes the form USERNAME:PASSWORD but you should beware of the security risks of sending cleartext passwords. HOSTNAME may be a domain name or a dotted decimal address. If the `:PORT' is omitted then the library will use the `well known' port for that service when accessing URLs. With the possible exception of `telnet', it is rare for ports to be specified, and it is possible using a non-standard port may have undesired consequences if a different service is listening on that port (e.g., an HTTP URL specifying the SMTP port can cause mail to be sent). The meaning of the PATH component depends on the service. * Menu: * Configuration:: * Parsed URLs:: URLs are parsed into vector structures.  File: url, Node: Configuration, Next: Parsed URLs, Up: Getting Started 1.1 Configuration ================= -- Variable: url-configuration-directory The directory in which URL configuration files, the cache etc., reside. Default `~/.url'.  File: url, Node: Parsed URLs, Prev: Configuration, Up: Getting Started 1.2 Parsed URLs =============== The library functions typically operate on "parsed" versions of URLs. These are actually vectors of the form: [TYPE USER PASSWORD HOST PORT FILE TARGET ATTRIBUTES FULL] where TYPE is the type of the URL scheme, e.g., `http' USER is the username associated with it, or `nil'; PASSWORD is the user password associated with it, or `nil'; HOST is the host name associated with it, or `nil'; PORT is the port number associated with it, or `nil'; FILE is the `file' part of it, or `nil'. This doesn't necessarily actually refer to a file; TARGET is the target part, or `nil'; ATTRIBUTES is the attributes associated with it, or `nil'; FULL is `t' for a fully-specified URL, with a host part indicated by `//' after the scheme part. These attributes have accessors named `url-PART', where PART is the name of one of the elements above, e.g., `url-host'. Similarly, there are setters of the form `url-set-PART'. There are functions for parsing and unparsing between the string and vector forms. -- Function: url-generic-parse-url url Return a parsed version of the string URL. -- Function: url-recreate-url url Recreates a URL string from the parsed URL.  File: url, Node: Retrieving URLs, Next: Supported URL Types, Prev: Getting Started, Up: Top 2 Retrieving URLs ***************** -- Function: url-retrieve-synchronously url Retrieve URL synchronously and return a buffer containing the data. URL is either a string or a parsed URL structure. Return `nil' if there are no data associated with it (the case for dired, info, or mailto URLs that need no further processing). -- Function: url-retrieve url callback &optional cbargs Retrieve URL asynchronously and call CALLBACK with args CBARGS when finished. The callback is called when the object has been completely retrieved, with the current buffer containing the object and any MIME headers associated with it. URL is either a string or a parsed URL structure. Returns the buffer URL will load into, or `nil' if the process has already completed.  File: url, Node: Supported URL Types, Next: Defining New URLs, Prev: Retrieving URLs, Up: Top 3 Supported URL Types ********************* * Menu: * http/https:: Hypertext Transfer Protocol. * file/ftp:: Local files and FTP archives. * info:: Emacs `Info' pages. * mailto:: Sending email. * news/nntp/snews:: Usenet news. * rlogin/telnet/tn3270:: Remote host connectivity. * irc:: Internet Relay Chat. * data:: Embedded data URLs. * nfs:: Networked File System * cid:: Content-ID. * about:: * ldap:: Lightweight Directory Access Protocol * imap:: IMAP mailboxes. * man:: Unix man pages.  File: url, Node: http/https, Next: file/ftp, Up: Supported URL Types 3.1 `http' and `https' ====================== The scheme `http' is Hypertext Transfer Protocol. The library supports version 1.1, specified in RFC 2616. (This supersedes 1.0, defined in RFC 1945) HTTP URLs have the following form, where most of the parts are optional: http://USER:PASSWORD@HOST:PORT/PATH?SEARCHPART#FRAGMENT The scheme `https' is a secure version of `http', with transmission via SSL. It is defined in RFC 2069. Its default port is 443. This scheme depends on SSL support in Emacs via the `ssl.el' library and is actually implemented by forcing the `ssl' gateway method to be used. *Note Gateways in general::. -- User Option: url-honor-refresh-requests This controls honoring of HTTP `Refresh' headers by which servers can direct clients to reload documents from the same URL or a or different one. `nil' means they will not be honored, `t' (the default) means they will always be honored, and otherwise the user will be asked on each request. * Menu: * Cookies:: * HTTP language/coding:: * HTTP URL Options:: * Dealing with HTTP documents::  File: url, Node: Cookies, Next: HTTP language/coding, Up: http/https 3.1.1 Cookies ------------- -- User Option: url-cookie-file The file in which cookies are stored, defaulting to `cookies' in the directory specified by `url-configuration-directory'. -- User Option: url-cookie-confirmation Specifies whether confirmation is require to accept cookies. -- User Option: url-cookie-multiple-line Specifies whether to put all cookies for the server on one line in the HTTP request to satisfy broken servers like `http://www.hotmail.com'. -- User Option: url-cookie-trusted-urls A list of regular expressions matching URLs from which to accept cookies always. -- User Option: url-cookie-untrusted-urls A list of regular expressions matching URLs from which to reject cookies always. -- User Option: url-cookie-save-interval The number of seconds between automatic saves of cookies to disk. Default is one hour.  File: url, Node: HTTP language/coding, Next: HTTP URL Options, Prev: Cookies, Up: http/https 3.1.2 Language and Encoding Preferences --------------------------------------- HTTP allows clients to express preferences for the language and encoding of documents which servers may honor. For each of these variables, the value is a string; it can specify a single choice, or it can be a comma-separated list. Normally, this list is ordered by descending preference. However, each element can be followed by `;q=PRIORITY' to specify its preference level, a decimal number from 0 to 1; e.g., for `url-mime-language-string', `"de, en-gb;q=0.8, en;q=0.7"'. An element that has no `;q' specification has preference level 1. -- User Option: url-mime-charset-string This variable specifies a preference for character sets when documents can be served in more than one encoding. HTTP allows specifying a series of MIME charsets which indicate your preferred character set encodings, e.g., Latin-9 or Big5, and these can be weighted. The default series is generated automatically from the associated MIME types of all defined coding systems, sorted by the coding system priority specified in Emacs. *Note Recognizing Coding Systems: (emacs)Recognize Coding. -- User Option: url-mime-language-string A string specifying the preferred language when servers can serve files in several languages. Use RFC 1766 abbreviations, e.g., `en' for English, `de' for German. The string can be `"*"' to get the first available language (as opposed to the default).  File: url, Node: HTTP URL Options, Next: Dealing with HTTP documents, Prev: HTTP language/coding, Up: http/https 3.1.3 HTTP URL Options ---------------------- HTTP supports an `OPTIONS' method describing things supported by the URL. -- Function: url-http-options url Returns a property list describing options available for URL. The property list members are: `methods' A list of symbols specifying what HTTP methods the resource supports. `dav' A list of numbers specifying what DAV protocol/schema versions are supported. `dasl' A list of supported DASL search types supported (string form). `ranges' A list of the units available for use in partial document fetches. `p3p' The "Platform For Privacy Protection" description for the resource. Currently this is just the raw header contents.  File: url, Node: Dealing with HTTP documents, Prev: HTTP URL Options, Up: http/https 3.1.4 Dealing with HTTP documents --------------------------------- HTTP URLs are retrieved into a buffer containing the HTTP headers followed by the body. Since the headers are quasi-MIME, they may be processed using the MIME library. *Note Emacs MIME: (emacs-mime)Top. The URL package provides a function to do this in general: -- Function: url-decode-text-part handle &optional coding This function decodes charset-encoded text in the current buffer. In Emacs, the buffer is expected to be unibyte initially and is set to multibyte after decoding. HANDLE is the MIME handle of the original part. CODING is an explicit coding to use, overriding what the MIME headers specify. The coding system used for the decoding is returned. Note that this function doesn't deal with `http-equiv' charset specifications in HTML `' elements.  File: url, Node: file/ftp, Next: info, Prev: http/https, Up: Supported URL Types 3.2 file and ftp ================ ftp://USER:PASSWORD@HOST:PORT/FILE file://USER:PASSWORD@HOST:PORT/FILE These schemes are defined in RFC 1808. `ftp:' and `file:' are synonymous in this library. They allow reading arbitrary files from hosts. Either `ange-ftp' (Emacs) or `efs' (XEmacs) is used to retrieve them from remote hosts. Local files are accessed directly. Compressed files are handled, but support is hard-coded so that `jka-compr-compression-info-list' and so on have no affect. Suffixes recognized are `.z', `.gz', `.Z' and `.bz2'. -- User Option: url-directory-index-file The filename to look for when indexing a directory, default `"index.html"'. If this file exists, and is readable, then it will be viewed instead of using `dired' to view the directory.  File: url, Node: info, Next: mailto, Prev: file/ftp, Up: Supported URL Types 3.3 info ======== info:FILE#NODE Info URLs are not officially defined. They invoke `Info-goto-node' with argument `(FILE)NODE'. `#NODE' is optional, defaulting to `Top'.  File: url, Node: mailto, Next: news/nntp/snews, Prev: info, Up: Supported URL Types 3.4 mailto ========== A mailto URL will send an email message to the address in the URL, for example `mailto:foo@bar.com' would compose a message to `foo@bar.com'. -- User Option: url-mail-command The function called whenever url needs to send mail. This should normally be left to default from MAIL-USER-AGENT. *Note Mail-Composition Methods: (emacs)Mail Methods. An `X-Url-From' header field containing the URL of the document that contained the mailto URL is added if that URL is known. RFC 2368 extends the definition of mailto URLs in RFC 1738. The form of a mailto URL is `mailto:MAILBOX[?HEADER=CONTENTS[&HEADER=CONTENTS]]' where an arbitrary number of HEADERs can be added. If the HEADER is `body', then CONTENTS is put in the body otherwise a HEADER header field is created with CONTENTS as its contents. Note that the URL library does not consider any headers `dangerous' so you should check them before sending the message. Email messages are defined in RFC822.  File: url, Node: news/nntp/snews, Next: rlogin/telnet/tn3270, Prev: mailto, Up: Supported URL Types 3.5 `news', `nntp' and `snews' ============================== The network news URL scheme take the following forms following RFC 1738 except that for compatibility with other clients, host and port fields may be included in news URLs though they are properly only allowed for nntp an snews. `news:NEWSGROUP' Retrieves a list of messages in NEWSGROUP; `news:MESSAGE-ID' Retrieves the message with the given MESSAGE-ID; `news:*' Retrieves a list of all available newsgroups; `nntp://HOST:PORT/NEWSGROUP' `nntp://HOST:PORT/MESSAGE-ID' `nntp://HOST:PORT/*' Similar to the `news' versions. `:PORT' is optional and defaults to :119. `snews' is the same as `nntp' except that the default port is :563. (It is tunneled through SSL.) An `nntp' URL is the same as a news URL, except that the URL may specify an article by its number. -- User Option: url-news-server This variable can be used to override the default news server. Usually this will be set by the Gnus package, which is used to fetch news. It may be set from the conventional environment variable `NNTPSERVER'.  File: url, Node: rlogin/telnet/tn3270, Next: irc, Prev: news/nntp/snews, Up: Supported URL Types 3.6 rlogin, telnet and tn3270 ============================= These URL schemes from RFC 1738 for logon via a terminal emulator have the form telnet://USER:PASSWORD@HOST:PORT but the `:PASSWORD' component is ignored. To handle rlogin, telnet and tn3270 URLs, a `rlogin', `telnet' or `tn3270' (the program names and arguments are hardcoded) session is run in a `terminal-emulator' buffer. Well-known ports are used if the URL does not specify a port.  File: url, Node: irc, Next: data, Prev: rlogin/telnet/tn3270, Up: Supported URL Types 3.7 irc ======= "Internet Relay Chat" (IRC) is handled by handing off the IRC session to a function named in `url-irc-function'. -- User Option: url-irc-function A function to actually open an IRC connection. This function must take five arguments, HOST, PORT, CHANNEL, USER and PASSWORD. The CHANNEL argument specifies the channel to join immediately, this can be `nil'. By default this is `url-irc-rcirc'. -- Function: url-irc-rcirc host port channel user password Processes the arguments and lets `rcirc' handle the session. -- Function: url-irc-erc host port channel user password Processes the arguments and lets `ERC' handle the session. -- Function: url-irc-zenirc host port channel user password Processes the arguments and lets `zenirc' handle the session.  File: url, Node: data, Next: nfs, Prev: irc, Up: Supported URL Types 3.8 data ======== data:[MEDIA-TYPE][;BASE64],DATA Data URLs contain MIME data in the URL itself. They are defined in RFC 2397. MEDIA-TYPE is a MIME `Content-Type' string, possibly including parameters. It defaults to `text/plain;charset=US-ASCII'. The `text/plain' can be omitted but the charset parameter supplied. If `;base64' is present, the DATA are base64-encoded.  File: url, Node: nfs, Next: cid, Prev: data, Up: Supported URL Types 3.9 nfs ======= nfs://USER:PASSWORD@HOST:PORT/FILE The `nfs:' scheme is defined in RFC 2224. It is similar to `ftp:' except that it points to a file on a remote host that is handled by the automounter on the local host. -- Variable: url-nfs-automounter-directory-spec A string saying how to invoke the NFS automounter. Certain `%' sequences are recognized: `%h' The hostname of the NFS server; `%n' The port number of the NFS server; `%u' The username to use to authenticate; `%p' The password to use to authenticate; `%f' The filename on the remote server; `%%' A literal `%'. Each can be used any number of times.  File: url, Node: cid, Next: about, Prev: nfs, Up: Supported URL Types 3.10 cid ======== RFC 2111  File: url, Node: about, Next: ldap, Prev: cid, Up: Supported URL Types 3.11 about ==========  File: url, Node: ldap, Next: imap, Prev: about, Up: Supported URL Types 3.12 ldap ========= The LDAP scheme is defined in RFC 2255.  File: url, Node: imap, Next: man, Prev: ldap, Up: Supported URL Types 3.13 imap ========= RFC 2192  File: url, Node: man, Prev: imap, Up: Supported URL Types 3.14 man ======== `man:PAGE-SPEC' This is a non-standard scheme. PAGE-SPEC is passed directly to the Lisp `man' function.  File: url, Node: Defining New URLs, Next: General Facilities, Prev: Supported URL Types, Up: Top 4 Defining New URLs ******************* * Menu: * Naming conventions:: * Required functions:: * Optional functions:: * Asynchronous fetching:: * Supporting file-name-handlers::  File: url, Node: Naming conventions, Next: Required functions, Up: Defining New URLs 4.1 Naming conventions ======================  File: url, Node: Required functions, Next: Optional functions, Prev: Naming conventions, Up: Defining New URLs 4.2 Required functions ======================  File: url, Node: Optional functions, Next: Asynchronous fetching, Prev: Required functions, Up: Defining New URLs 4.3 Optional functions ======================  File: url, Node: Asynchronous fetching, Next: Supporting file-name-handlers, Prev: Optional functions, Up: Defining New URLs 4.4 Asynchronous fetching =========================  File: url, Node: Supporting file-name-handlers, Prev: Asynchronous fetching, Up: Defining New URLs 4.5 Supporting file-name-handlers =================================  File: url, Node: General Facilities, Next: Customization, Prev: Defining New URLs, Up: Top 5 General Facilities ******************** * Menu: * Disk Caching:: * Proxies:: * Gateways in general:: * History::  File: url, Node: Disk Caching, Next: Proxies, Up: General Facilities 5.1 Disk Caching ================ The disk cache stores retrieved documents locally, whence they can be retrieved more quickly. When requesting a URL that is in the cache, the library checks to see if the page has changed since it was last retrieved from the remote machine. If not, the local copy is used, saving the transmission over the network. Currently the cache isn't cleared automatically. -- User Option: url-automatic-caching Setting this variable non-`nil' causes documents to be cached automatically. -- User Option: url-cache-directory This variable specifies the directory to store the cache files. It defaults to sub-directory `cache' of `url-configuration-directory'. -- User Option: url-cache-creation-function The cache relies on a scheme for mapping URLs to files in the cache. This variable names a function which sets the type of cache to use. It takes a URL as argument and returns the absolute file name of the corresponding cache file. The two supplied possibilities are `url-cache-create-filename-using-md5' and `url-cache-create-filename-human-readable'. -- Function: url-cache-create-filename-using-md5 url Creates a cache file name from URL using MD5 hashing. This is creates entries with very few cache collisions and is fast. (url-cache-create-filename-using-md5 "http://www.example.com/foo/bar") => "/home/fx/.url/cache/fx/http/com/example/www/b8a35774ad20db71c7c3409a5410e74f" -- Function: url-cache-create-filename-human-readable url Creates a cache file name from URL more obviously connected to URL than for `url-cache-create-filename-using-md5', but more likely to conflict with other files. (url-cache-create-filename-human-readable "http://www.example.com/foo/bar") => "/home/fx/.url/cache/fx/http/com/example/www/foo/bar"  File: url, Node: Proxies, Next: Gateways in general, Prev: Disk Caching, Up: General Facilities 5.2 Proxies and Gatewaying ========================== Proxy servers are commonly used to provide gateways through firewalls or as caches serving some more-or-less local network. Each protocol (HTTP, FTP, etc.) can have a different gateway server. Proxying is conventionally configured commonly amongst different programs through environment variables of the form `PROTOCOL_proxy', where PROTOCOL is one of the supported network protocols (`http', `ftp' etc.). The library recognizes such variables in either upper or lower case. Their values are of one of the forms: * `HOST:PORT' * A full URL; * Simply a host name. The `NO_PROXY' environment variable specifies URLs that should be excluded from proxying (on servers that should be contacted directly). This should be a comma-separated list of hostnames, domain names, or a mixture of both. Asterisks can be used as wildcards, but other clients may not support that. Domain names may be indicated by a leading dot. For example: NO_PROXY="*.aventail.com,home.com,.seanet.com" says to contact all machines in the `aventail.com' and `seanet.com' domains directly, as well as the machine named `home.com'. If `NO_PROXY' isn't defined, `no_PROXY' and `no_proxy' are also tried, in that order. Proxies may also be specified directly in Lisp. -- User Option: url-proxy-services This variable is an alist of URL schemes and proxy servers that gateway them. The items are of the form `(SCHEME . HOST:PORTNUMBER)', says that the URL SCHEME is gatewayed through PORTNUMBER on the specified HOST. An exception is the pseudo scheme `"no_proxy"', which is paired with a regexp matching host names not to be proxied. This variable is initialized from the environment as above. (setq url-proxy-services '(("http" . "proxy.aventail.com:80") ("no_proxy" . "^.*\\(aventail\\|seanet\\)\\.com")))  File: url, Node: Gateways in general, Next: History, Prev: Proxies, Up: General Facilities 5.3 Gateways in General ======================= The library provides a general gateway layer through which all networking passes. It can both control access to the network and provide access through gateways in firewalls. This may make direct connections in some cases and pass through some sort of gateway in others.(1) The library's basic function responsible for making connections is `url-open-stream'. -- Function: url-open-stream name buffer host service Open a stream to HOST, possibly via a gateway. The other arguments are as for `open-network-stream'. This will not make a connection if `url-gateway-unplugged' is non-`nil'. -- Variable: url-gateway-local-host-regexp This is a regular expression that matches local hosts that do not require the use of a gateway. If `nil', all connections are made through the gateway. -- Variable: url-gateway-method This variable controls which gateway method is used. It may be useful to bind it temporarily in some applications. It has values taken from a list of symbols. Possible values are: `telnet' Use this method if you must first telnet and log into a gateway host, and then run telnet from that host to connect to outside machines. `rlogin' This method is identical to `telnet', but uses `rlogin' to log into the remote machine without having to send the username and password over the wire every time. `socks' Use if the firewall has a SOCKS gateway running on it. The SOCKS v5 protocol is defined in RFC 1928. `native' This method uses Emacs's builtin networking directly. This is the default. It can be used only if there is no firewall blocking access. The following variables control the gateway methods. -- User Option: url-gateway-telnet-host The gateway host to telnet to. Once logged in there, you then telnet out to the hosts you want to connect to. -- User Option: url-gateway-telnet-parameters This should be a list of parameters to pass to the `telnet' program. -- User Option: url-gateway-telnet-password-prompt This is a regular expression that matches the password prompt when logging in. -- User Option: url-gateway-telnet-login-prompt This is a regular expression that matches the username prompt when logging in. -- User Option: url-gateway-telnet-user-name The username to log in with. -- User Option: url-gateway-telnet-password The password to send when logging in. -- User Option: url-gateway-prompt-pattern This is a regular expression that matches the shell prompt. -- User Option: url-gateway-rlogin-host Host to `rlogin' to before telnetting out. -- User Option: url-gateway-rlogin-parameters Parameters to pass to `rsh'. -- User Option: url-gateway-rlogin-user-name User name to use when logging in to the gateway. -- User Option: url-gateway-prompt-pattern This is a regular expression that matches the shell prompt. -- User Option: socks-server This specifies the default server, it takes the form `("Default server" SERVER PORT VERSION)' where VERSION can be either 4 or 5. -- Variable: socks-password If this is `nil' then you will be asked for the password, otherwise it will be used as the password for authenticating you to the SOCKS server. -- Variable: socks-username This is the username to use when authenticating yourself to the SOCKS server. By default this is your login name. -- Variable: socks-timeout This controls how long, in seconds, to wait for responses from the SOCKS server; it is 5 by default. -- User Option: socks-nslookup-program This the `nslookup' program. It is `"nslookup"' by default. * Menu: * Suppressing network connections:: ---------- Footnotes ---------- (1) Proxies (which only operate over HTTP) are implemented using this.  File: url, Node: Suppressing network connections, Up: Gateways in general 5.3.1 Suppressing Network Connections ------------------------------------- In some circumstances it is desirable to suppress making network connections. A typical case is when rendering HTML in a mail user agent, when external URLs should not be activated, particularly to avoid `bugs' which `call home' by fetch single-pixel images and the like. To arrange this, bind the following variable for the duration of such processing. -- Variable: url-gateway-unplugged If this variable is non-`nil' new network connections are never opened by the URL library.  File: url, Node: History, Prev: Gateways in general, Up: General Facilities 5.4 History =========== The library can maintain a global history list tracking URLs accessed. URL completion can be done from it. The history mechanism is set up automatically via `url-do-setup' when it is configured to be on. Note that the size of the history list is currently not limited. The history `list' is actually a hash table, `url-history-hash-table'. It contains access times keyed by URL strings. The times are in the format returned by `current-time'. -- Function: url-history-update-url url time This function updates the history table with an entry for URL accessed at the given TIME. -- User Option: url-history-track If non-`nil', the library will keep track of all the URLs accessed. If it is `t', the list is saved to disk at the end of each Emacs session. The default is `nil'. -- User Option: url-history-file The file storing the history list between sessions. It defaults to `history' in `url-configuration-directory'. -- User Option: url-history-save-interval The number of seconds between automatic saves of the history list. Default is one hour. Note that if you change this variable directly, rather than using Custom, after `url-do-setup' has been run, you need to run the function `url-history-setup-save-timer'. -- Function: url-history-parse-history &optional fname Parses the history file FNAME (default `url-history-file') and sets up the history list. -- Function: url-history-save-history &optional fname Saves the current history to file FNAME (default `url-history-file'). -- Function: url-completion-function string predicate function You can use this function to do completion of URLs from the history.  File: url, Node: Customization, Next: GNU Free Documentation License, Prev: General Facilities, Up: Top 6 Customization *************** 6.1 Environment Variables ========================= The following environment variables affect the library's operation at startup. `TMPDIR' If this is defined, URL-TEMPORARY-DIRECTORY is initialized from it. 6.2 General User Options ======================== The following user options, settable with Customize, affect the general operation of the package. -- User Option: url-debug Specifies the types of debug messages which are logged to the `*URL-DEBUG*' buffer. `t' means log all messages. A number means log all messages and show them with `message'. It may also be a list of the types of messages to be logged. -- User Option: url-personal-mail-address -- User Option: url-privacy-level -- User Option: url-uncompressor-alist -- User Option: url-passwd-entry-func -- User Option: url-standalone-mode -- User Option: url-bad-port-list -- User Option: url-max-password-attempts -- User Option: url-temporary-directory -- User Option: url-show-status -- User Option: url-confirmation-func The function to use for asking yes or no functions. This is normally either `y-or-n-p' or `yes-or-no-p', but could be another function taking a single argument (the prompt) and returning `t' only if an affirmative answer is given. -- User Option: url-gateway-method A symbol specifying the type of gateway support to use for connections from the local machine. The supported methods are: `telnet' Run telnet in a subprocess to connect; `rlogin' Rlogin to another machine to connect; `socks' Connect through a socks server; `ssl' Connect with SSL; `native' Connect directly.  File: url, Node: GNU Free Documentation License, Next: Function Index, Prev: Customization, Up: Top Appendix A GNU Free Documentation License ***************************************** Version 1.3, 3 November 2008 Copyright (C) 2000, 2001, 2002, 2007, 2008, 2009 Free Software Foundation, Inc. `http://fsf.org/' Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. 0. PREAMBLE The purpose of this License is to make a manual, textbook, or other functional and useful document "free" in the sense of freedom: to assure everyone the effective freedom to copy and redistribute it, with or without modifying it, either commercially or noncommercially. Secondarily, this License preserves for the author and publisher a way to get credit for their work, while not being considered responsible for modifications made by others. This License is a kind of "copyleft", which means that derivative works of the document must themselves be free in the same sense. It complements the GNU General Public License, which is a copyleft license designed for free software. We have designed this License in order to use it for manuals for free software, because free software needs free documentation: a free program should come with manuals providing the same freedoms that the software does. But this License is not limited to software manuals; it can be used for any textual work, regardless of subject matter or whether it is published as a printed book. We recommend this License principally for works whose purpose is instruction or reference. 1. APPLICABILITY AND DEFINITIONS This License applies to any manual or other work, in any medium, that contains a notice placed by the copyright holder saying it can be distributed under the terms of this License. Such a notice grants a world-wide, royalty-free license, unlimited in duration, to use that work under the conditions stated herein. The "Document", below, refers to any such manual or work. Any member of the public is a licensee, and is addressed as "you". You accept the license if you copy, modify or distribute the work in a way requiring permission under copyright law. A "Modified Version" of the Document means any work containing the Document or a portion of it, either copied verbatim, or with modifications and/or translated into another language. A "Secondary Section" is a named appendix or a front-matter section of the Document that deals exclusively with the relationship of the publishers or authors of the Document to the Document's overall subject (or to related matters) and contains nothing that could fall directly within that overall subject. (Thus, if the Document is in part a textbook of mathematics, a Secondary Section may not explain any mathematics.) The relationship could be a matter of historical connection with the subject or with related matters, or of legal, commercial, philosophical, ethical or political position regarding them. The "Invariant Sections" are certain Secondary Sections whose titles are designated, as being those of Invariant Sections, in the notice that says that the Document is released under this License. If a section does not fit the above definition of Secondary then it is not allowed to be designated as Invariant. The Document may contain zero Invariant Sections. If the Document does not identify any Invariant Sections then there are none. The "Cover Texts" are certain short passages of text that are listed, as Front-Cover Texts or Back-Cover Texts, in the notice that says that the Document is released under this License. A Front-Cover Text may be at most 5 words, and a Back-Cover Text may be at most 25 words. A "Transparent" copy of the Document means a machine-readable copy, represented in a format whose specification is available to the general public, that is suitable for revising the document straightforwardly with generic text editors or (for images composed of pixels) generic paint programs or (for drawings) some widely available drawing editor, and that is suitable for input to text formatters or for automatic translation to a variety of formats suitable for input to text formatters. A copy made in an otherwise Transparent file format whose markup, or absence of markup, has been arranged to thwart or discourage subsequent modification by readers is not Transparent. An image format is not Transparent if used for any substantial amount of text. A copy that is not "Transparent" is called "Opaque". Examples of suitable formats for Transparent copies include plain ASCII without markup, Texinfo input format, LaTeX input format, SGML or XML using a publicly available DTD, and standard-conforming simple HTML, PostScript or PDF designed for human modification. Examples of transparent image formats include PNG, XCF and JPG. Opaque formats include proprietary formats that can be read and edited only by proprietary word processors, SGML or XML for which the DTD and/or processing tools are not generally available, and the machine-generated HTML, PostScript or PDF produced by some word processors for output purposes only. The "Title Page" means, for a printed book, the title page itself, plus such following pages as are needed to hold, legibly, the material this License requires to appear in the title page. For works in formats which do not have any title page as such, "Title Page" means the text near the most prominent appearance of the work's title, preceding the beginning of the body of the text. The "publisher" means any person or entity that distributes copies of the Document to the public. A section "Entitled XYZ" means a named subunit of the Document whose title either is precisely XYZ or contains XYZ in parentheses following text that translates XYZ in another language. (Here XYZ stands for a specific section name mentioned below, such as "Acknowledgements", "Dedications", "Endorsements", or "History".) To "Preserve the Title" of such a section when you modify the Document means that it remains a section "Entitled XYZ" according to this definition. The Document may include Warranty Disclaimers next to the notice which states that this License applies to the Document. These Warranty Disclaimers are considered to be included by reference in this License, but only as regards disclaiming warranties: any other implication that these Warranty Disclaimers may have is void and has no effect on the meaning of this License. 2. VERBATIM COPYING You may copy and distribute the Document in any medium, either commercially or noncommercially, provided that this License, the copyright notices, and the license notice saying this License applies to the Document are reproduced in all copies, and that you add no other conditions whatsoever to those of this License. You may not use technical measures to obstruct or control the reading or further copying of the copies you make or distribute. However, you may accept compensation in exchange for copies. If you distribute a large enough number of copies you must also follow the conditions in section 3. 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It is requested, but not required, that you contact the authors of the Document well before redistributing any large number of copies, to give them a chance to provide you with an updated version of the Document. 4. MODIFICATIONS You may copy and distribute a Modified Version of the Document under the conditions of sections 2 and 3 above, provided that you release the Modified Version under precisely this License, with the Modified Version filling the role of the Document, thus licensing distribution and modification of the Modified Version to whoever possesses a copy of it. In addition, you must do these things in the Modified Version: A. Use in the Title Page (and on the covers, if any) a title distinct from that of the Document, and from those of previous versions (which should, if there were any, be listed in the History section of the Document). You may use the same title as a previous version if the original publisher of that version gives permission. B. List on the Title Page, as authors, one or more persons or entities responsible for authorship of the modifications in the Modified Version, together with at least five of the principal authors of the Document (all of its principal authors, if it has fewer than five), unless they release you from this requirement. C. State on the Title page the name of the publisher of the Modified Version, as the publisher. D. Preserve all the copyright notices of the Document. E. Add an appropriate copyright notice for your modifications adjacent to the other copyright notices. F. Include, immediately after the copyright notices, a license notice giving the public permission to use the Modified Version under the terms of this License, in the form shown in the Addendum below. G. Preserve in that license notice the full lists of Invariant Sections and required Cover Texts given in the Document's license notice. H. Include an unaltered copy of this License. I. Preserve the section Entitled "History", Preserve its Title, and add to it an item stating at least the title, year, new authors, and publisher of the Modified Version as given on the Title Page. If there is no section Entitled "History" in the Document, create one stating the title, year, authors, and publisher of the Document as given on its Title Page, then add an item describing the Modified Version as stated in the previous sentence. J. Preserve the network location, if any, given in the Document for public access to a Transparent copy of the Document, and likewise the network locations given in the Document for previous versions it was based on. These may be placed in the "History" section. You may omit a network location for a work that was published at least four years before the Document itself, or if the original publisher of the version it refers to gives permission. K. For any section Entitled "Acknowledgements" or "Dedications", Preserve the Title of the section, and preserve in the section all the substance and tone of each of the contributor acknowledgements and/or dedications given therein. L. Preserve all the Invariant Sections of the Document, unaltered in their text and in their titles. Section numbers or the equivalent are not considered part of the section titles. M. Delete any section Entitled "Endorsements". Such a section may not be included in the Modified Version. N. Do not retitle any existing section to be Entitled "Endorsements" or to conflict in title with any Invariant Section. O. Preserve any Warranty Disclaimers. If the Modified Version includes new front-matter sections or appendices that qualify as Secondary Sections and contain no material copied from the Document, you may at your option designate some or all of these sections as invariant. To do this, add their titles to the list of Invariant Sections in the Modified Version's license notice. These titles must be distinct from any other section titles. You may add a section Entitled "Endorsements", provided it contains nothing but endorsements of your Modified Version by various parties--for example, statements of peer review or that the text has been approved by an organization as the authoritative definition of a standard. You may add a passage of up to five words as a Front-Cover Text, and a passage of up to 25 words as a Back-Cover Text, to the end of the list of Cover Texts in the Modified Version. Only one passage of Front-Cover Text and one of Back-Cover Text may be added by (or through arrangements made by) any one entity. If the Document already includes a cover text for the same cover, previously added by you or by arrangement made by the same entity you are acting on behalf of, you may not add another; but you may replace the old one, on explicit permission from the previous publisher that added the old one. The author(s) and publisher(s) of the Document do not by this License give permission to use their names for publicity for or to assert or imply endorsement of any Modified Version. 5. COMBINING DOCUMENTS You may combine the Document with other documents released under this License, under the terms defined in section 4 above for modified versions, provided that you include in the combination all of the Invariant Sections of all of the original documents, unmodified, and list them all as Invariant Sections of your combined work in its license notice, and that you preserve all their Warranty Disclaimers. The combined work need only contain one copy of this License, and multiple identical Invariant Sections may be replaced with a single copy. If there are multiple Invariant Sections with the same name but different contents, make the title of each such section unique by adding at the end of it, in parentheses, the name of the original author or publisher of that section if known, or else a unique number. Make the same adjustment to the section titles in the list of Invariant Sections in the license notice of the combined work. In the combination, you must combine any sections Entitled "History" in the various original documents, forming one section Entitled "History"; likewise combine any sections Entitled "Acknowledgements", and any sections Entitled "Dedications". You must delete all sections Entitled "Endorsements." 6. COLLECTIONS OF DOCUMENTS You may make a collection consisting of the Document and other documents released under this License, and replace the individual copies of this License in the various documents with a single copy that is included in the collection, provided that you follow the rules of this License for verbatim copying of each of the documents in all other respects. You may extract a single document from such a collection, and distribute it individually under this License, provided you insert a copy of this License into the extracted document, and follow this License in all other respects regarding verbatim copying of that document. 7. AGGREGATION WITH INDEPENDENT WORKS A compilation of the Document or its derivatives with other separate and independent documents or works, in or on a volume of a storage or distribution medium, is called an "aggregate" if the copyright resulting from the compilation is not used to limit the legal rights of the compilation's users beyond what the individual works permit. When the Document is included in an aggregate, this License does not apply to the other works in the aggregate which are not themselves derivative works of the Document. If the Cover Text requirement of section 3 is applicable to these copies of the Document, then if the Document is less than one half of the entire aggregate, the Document's Cover Texts may be placed on covers that bracket the Document within the aggregate, or the electronic equivalent of covers if the Document is in electronic form. Otherwise they must appear on printed covers that bracket the whole aggregate. 8. TRANSLATION Translation is considered a kind of modification, so you may distribute translations of the Document under the terms of section 4. Replacing Invariant Sections with translations requires special permission from their copyright holders, but you may include translations of some or all Invariant Sections in addition to the original versions of these Invariant Sections. You may include a translation of this License, and all the license notices in the Document, and any Warranty Disclaimers, provided that you also include the original English version of this License and the original versions of those notices and disclaimers. In case of a disagreement between the translation and the original version of this License or a notice or disclaimer, the original version will prevail. If a section in the Document is Entitled "Acknowledgements", "Dedications", or "History", the requirement (section 4) to Preserve its Title (section 1) will typically require changing the actual title. 9. TERMINATION You may not copy, modify, sublicense, or distribute the Document except as expressly provided under this License. Any attempt otherwise to copy, modify, sublicense, or distribute it is void, and will automatically terminate your rights under this License. However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation. Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice. Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, receipt of a copy of some or all of the same material does not give you any rights to use it. 10. FUTURE REVISIONS OF THIS LICENSE The Free Software Foundation may publish new, revised versions of the GNU Free Documentation License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. See `http://www.gnu.org/copyleft/'. Each version of the License is given a distinguishing version number. If the Document specifies that a particular numbered version of this License "or any later version" applies to it, you have the option of following the terms and conditions either of that specified version or of any later version that has been published (not as a draft) by the Free Software Foundation. If the Document does not specify a version number of this License, you may choose any version ever published (not as a draft) by the Free Software Foundation. If the Document specifies that a proxy can decide which future versions of this License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Document. 11. RELICENSING "Massive Multiauthor Collaboration Site" (or "MMC Site") means any World Wide Web server that publishes copyrightable works and also provides prominent facilities for anybody to edit those works. A public wiki that anybody can edit is an example of such a server. A "Massive Multiauthor Collaboration" (or "MMC") contained in the site means any set of copyrightable works thus published on the MMC site. "CC-BY-SA" means the Creative Commons Attribution-Share Alike 3.0 license published by Creative Commons Corporation, a not-for-profit corporation with a principal place of business in San Francisco, California, as well as future copyleft versions of that license published by that same organization. "Incorporate" means to publish or republish a Document, in whole or in part, as part of another Document. An MMC is "eligible for relicensing" if it is licensed under this License, and if all works that were first published under this License somewhere other than this MMC, and subsequently incorporated in whole or in part into the MMC, (1) had no cover texts or invariant sections, and (2) were thus incorporated prior to November 1, 2008. The operator of an MMC Site may republish an MMC contained in the site under CC-BY-SA on the same site at any time before August 1, 2009, provided the MMC is eligible for relicensing. ADDENDUM: How to use this License for your documents ==================================================== To use this License in a document you have written, include a copy of the License in the document and put the following copyright and license notices just after the title page: Copyright (C) YEAR YOUR NAME. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled ``GNU Free Documentation License''. If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts, replace the "with...Texts." line with this: with the Invariant Sections being LIST THEIR TITLES, with the Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST. If you have Invariant Sections without Cover Texts, or some other combination of the three, merge those two alternatives to suit the situation. If your document contains nontrivial examples of program code, we recommend releasing these examples in parallel under your choice of free software license, such as the GNU General Public License, to permit their use in free software.  File: url, Node: Function Index, Next: Variable Index, Prev: GNU Free Documentation License, Up: Top Command and Function Index ************************** [index] * Menu: * Info-goto-node: info. (line 6) * man: man. (line 6) * terminal-emulator: rlogin/telnet/tn3270. (line 6) * url-attributes: Parsed URLs. (line 41) * url-cache-create-filename-human-readable: Disk Caching. (line 37) * url-cache-create-filename-using-md5: Disk Caching. (line 31) * url-completion-function: History. (line 43) * url-decode-text-part: Dealing with HTTP documents. (line 12) * url-do-setup: History. (line 6) * url-file: Parsed URLs. (line 41) * url-full: Parsed URLs. (line 41) * url-generic-parse-url: Parsed URLs. (line 49) * url-history-parse-history: History. (line 35) * url-history-save-history: History. (line 39) * url-history-setup-save-timer: History. (line 29) * url-history-update-url: History. (line 16) * url-host: Parsed URLs. (line 41) * url-http-options: HTTP URL Options. (line 10) * url-irc-erc: irc. (line 19) * url-irc-rcirc: irc. (line 16) * url-irc-zenirc: irc. (line 22) * url-open-stream: Gateways in general. (line 14) * url-password: Parsed URLs. (line 41) * url-port: Parsed URLs. (line 41) * url-recreate-url: Parsed URLs. (line 52) * url-retrieve: Retrieving URLs. (line 13) * url-retrieve-synchronously: Retrieving URLs. (line 7) * url-set-attributes: Parsed URLs. (line 41) * url-set-file: Parsed URLs. (line 41) * url-set-full: Parsed URLs. (line 41) * url-set-host: Parsed URLs. (line 41) * url-set-password: Parsed URLs. (line 41) * url-set-port: Parsed URLs. (line 41) * url-set-target: Parsed URLs. (line 41) * url-set-type: Parsed URLs. (line 41) * url-set-user: Parsed URLs. (line 41) * url-target: Parsed URLs. (line 41) * url-type: Parsed URLs. (line 41) * url-user: Parsed URLs. (line 41)  File: url, Node: Variable Index, Next: Concept Index, Prev: Function Index, Up: Top Variable Index ************** [index] * Menu: * HTTP_PROXY: Proxies. (line 6) * mail-user-agent: mailto. (line 10) * NNTPSERVER: news/nntp/snews. (line 36) * NO_PROXY: Proxies. (line 20) * socks-nslookup-program: Gateways in general. (line 105) * socks-password: Gateways in general. (line 92) * socks-server: Gateways in general. (line 87) * socks-timeout: Gateways in general. (line 101) * socks-username: Gateways in general. (line 97) * TMPDIR: Customization. (line 13) * url-automatic-caching: Disk Caching. (line 14) * url-bad-port-list: Customization. (line 38) * url-cache-creation-function: Disk Caching. (line 23) * url-cache-directory: Disk Caching. (line 18) * url-configuration-directory: Configuration. (line 7) * url-confirmation-func: Customization. (line 46) * url-cookie-confirmation: Cookies. (line 11) * url-cookie-file: Cookies. (line 7) * url-cookie-multiple-line: Cookies. (line 14) * url-cookie-save-interval: Cookies. (line 27) * url-cookie-trusted-urls: Cookies. (line 19) * url-cookie-untrusted-urls: Cookies. (line 23) * url-debug: Customization. (line 22) * url-directory-index-file: file/ftp. (line 19) * url-gateway-local-host-regexp: Gateways in general. (line 19) * url-gateway-method <1>: Customization. (line 52) * url-gateway-method: Gateways in general. (line 24) * url-gateway-prompt-pattern: Gateways in general. (line 72) * url-gateway-rlogin-host: Gateways in general. (line 75) * url-gateway-rlogin-parameters: Gateways in general. (line 78) * url-gateway-rlogin-user-name: Gateways in general. (line 81) * url-gateway-telnet-host: Gateways in general. (line 50) * url-gateway-telnet-login-prompt: Gateways in general. (line 62) * url-gateway-telnet-parameters: Gateways in general. (line 54) * url-gateway-telnet-password: Gateways in general. (line 69) * url-gateway-telnet-password-prompt: Gateways in general. (line 58) * url-gateway-telnet-user-name: Gateways in general. (line 66) * url-gateway-unplugged: Suppressing network connections. (line 14) * url-history-file: History. (line 25) * url-history-hash-table: History. (line 11) * url-history-save-interval: History. (line 29) * url-history-track: History. (line 20) * url-honor-refresh-requests: http/https. (line 19) * url-irc-function: irc. (line 10) * url-mail-command: mailto. (line 10) * url-max-password-attempts: Customization. (line 40) * url-mime-charset-string: HTTP language/coding. (line 18) * url-mime-language-string: HTTP language/coding. (line 29) * url-news-server: news/nntp/snews. (line 34) * url-nfs-automounter-directory-spec: nfs. (line 13) * url-passwd-entry-func: Customization. (line 34) * url-personal-mail-address: Customization. (line 28) * url-privacy-level: Customization. (line 30) * url-proxy-services: Proxies. (line 35) * url-show-status: Customization. (line 44) * url-standalone-mode: Customization. (line 36) * url-temporary-directory: Customization. (line 13) * url-uncompressor-alist: Customization. (line 32)  File: url, Node: Concept Index, Prev: Variable Index, Up: Top Concept Index ************* [index] * Menu: * automounter: nfs. (line 6) * bugs, HTML: Suppressing network connections. (line 6) * Cache cleaning: Disk Caching. (line 10) * Caching: Disk Caching. (line 6) * character sets: HTTP language/coding. (line 18) * Cleaning the cache: Disk Caching. (line 10) * Clearing the cache: Disk Caching. (line 10) * coding systems: HTTP language/coding. (line 18) * compressed files: file/ftp. (line 6) * configuration files: Configuration. (line 7) * Content-ID: cid. (line 6) * DASL: HTTP URL Options. (line 22) * data URLs: data. (line 6) * DAV: HTTP URL Options. (line 18) * debugging: Customization. (line 22) * dired: file/ftp. (line 6) * Disk Cache: Disk Caching. (line 6) * email: mailto. (line 6) * environment variable: news/nntp/snews. (line 36) * environment variables <1>: Customization. (line 9) * environment variables: Proxies. (line 6) * ERC: irc. (line 6) * File Transfer Protocol: file/ftp. (line 6) * files: file/ftp. (line 6) * firewalls: Gateways in general. (line 6) * FTP: file/ftp. (line 6) * gateways: Gateways in general. (line 6) * HTML `bugs': Suppressing network connections. (line 6) * IMAP: imap. (line 6) * Info: info. (line 6) * Internet Relay Chat: irc. (line 6) * IRC: irc. (line 6) * language preferences: HTTP language/coding. (line 29) * LDAP: ldap. (line 6) * Lightweight Directory Access Protocol: ldap. (line 6) * mailto: mailto. (line 6) * man: man. (line 6) * MD5: Disk Caching. (line 32) * network connections, suppressing: Suppressing network connections. (line 6) * Network File System: nfs. (line 6) * network news: news/nntp/snews. (line 6) * news: news/nntp/snews. (line 6) * NFS: nfs. (line 6) * NNTP: news/nntp/snews. (line 6) * nslookup: Gateways in general. (line 105) * opening a stream: Gateways in general. (line 14) * P3P: HTTP URL Options. (line 29) * parsed URLs: Parsed URLs. (line 6) * Persistent Cache: Disk Caching. (line 6) * proxies: Proxies. (line 6) * proxy servers: Proxies. (line 6) * rcirc: irc. (line 6) * rlogin <1>: Gateways in general. (line 34) * rlogin: rlogin/telnet/tn3270. (line 6) * snews: news/nntp/snews. (line 6) * SOCKS: Gateways in general. (line 39) * SSL: news/nntp/snews. (line 27) * stream, opening: Gateways in general. (line 14) * suppressing network connections: Suppressing network connections. (line 6) * telnet <1>: Gateways in general. (line 29) * telnet: rlogin/telnet/tn3270. (line 6) * terminal emulation: rlogin/telnet/tn3270. (line 6) * Texinfo: info. (line 6) * tn3270: rlogin/telnet/tn3270. (line 6) * Unix man pages: man. (line 6) * unparsing URLs: Parsed URLs. (line 52) * URIs: Getting Started. (line 6) * URLs, definition: Getting Started. (line 6) * usenet: news/nntp/snews. (line 6) * ZEN IRC: irc. (line 6) * ~/.url: Configuration. (line 7)  Tag Table: Node: Top1071 Node: Getting Started2622 Node: Configuration4012 Node: Parsed URLs4270 Node: Retrieving URLs5622 Node: Supported URL Types6535 Node: http/https7395 Node: Cookies8576 Node: HTTP language/coding9562 Node: HTTP URL Options11189 Node: Dealing with HTTP documents12120 Node: file/ftp13097 Node: info13997 Node: mailto14264 Node: news/nntp/snews15372 Node: rlogin/telnet/tn327016606 Node: irc17173 Node: data18080 Node: nfs18545 Node: cid19295 Node: about19401 Node: ldap19502 Node: imap19643 Node: man19751 Node: Defining New URLs19949 Node: Naming conventions20233 Node: Required functions20371 Node: Optional functions20536 Node: Asynchronous fetching20704 Node: Supporting file-name-handlers20889 Node: General Facilities21063 Node: Disk Caching21279 Node: Proxies23260 Node: Gateways in general25315 Ref: Gateways in general-Footnote-129361 Node: Suppressing network connections29436 Node: History30087 Node: Customization31926 Node: GNU Free Documentation License33800 Node: Function Index58974 Node: Variable Index62076 Node: Concept Index66654  End Tag Table