SFLWLD(1) SFLWLD(1) NAME sflwld - Speak Freely Look Who's Listening server SYNOPSIS sflwld [ -duv ] [ -fserver,... ] [ -hpath ] [ -iinterval ] [ -mmsgfile ] [ -pport ] [ -zpath ] DESCRIPTION sflwld is a server daemon which maintains a list of users running Speak Freely who identify themselves to the site running the server. sflwld responds to requests and sup­ plies contact information to allow users to find one an­ other's Internet addresses. sflwld allows users to find one another and establish Speak Freely conversations even if one or both have dial-up Internet connections where the host name and Internet address vary from session to ses­ sion. Servers can forward information to one another, al­ lowing a user who queries one server in a mutually-for­ warding group to find users connected to any server in the group. OPTIONS -d Enables debug output. -fserver,... Information received from users directly con­ nected to this server will be forwarded to all servers listed. Server names can be either nu­ meric IP addresses or host names, and may speci­ fy a port number appended to the server address or name, separated by a colon. Multiple servers can be specified, separated by commas, up to a maximum of 5. -hpath An HTML file is written to the given path name (a fully qualified file name, less the .html suffix), listing all users currently registered with this server. Publishing this HTML file as a World-Wide Web document on the server allows easy access to a list of all active users who have sent their information there. -iinterval The HTML files written by the -h and -z options will be updated every interval seconds if a change has occurred during that period. If in­ terval is set to zero, the files are updated at the moment of any change. -mmsgfile The contents of the text file msgfile are loaded and used as the ``server welcome message''. This message usually identifies the server and points to the HTML file containing the list of active sites. 23 APR 1996 1 SFLWLD(1) SFLWLD(1) -pport Causes sflwld to listen on the specified port number instead of the default port specified by ``INTERNET_PORT''+2 in the Makefile. Specifying a nonstandard port number will cause Speak Freely clients that haven't been similarly re­ configured to fail to contact the server; the main reason for using a nonstandard port number is to permit testing an experimental server on a machine which is running a production server. -u Prints how-to-call information. -v Causes sflwld to log all connections, disconnec­ tions, and timeouts to standard output. -zpath An HTML file is written to the given path name (a fully qualified file name, less the .html suffix), listing all users currently registered with this server, regardless of whether they re­ quested public disclosure of their identity by wildcard match or not. This option allows the system administrator to see all users communi­ cating with the server without making this in­ formation publicly available. There's nothing to prevent a rogue site manager from publishing the complete user list, but since a user can easily determine whether a request for "exact match only" has been complied with, circumspect users will shun sites which ignore their request for discretion. FILES The -h and -z options create HTML files with the given base name and an extension of .new, then swap the new files for any previously-existing files with an extension of .html. The file update process avoids the risk of transferring a file in the process of being written. BUGS The number of matching items returned is limited to what will fit in a single 512 byte packet. This is deliberate; users who wish to browse active sites should consult the HTML file published with the -h option rather than tie up the server running sflwld with individual wild-card re­ quests. SEE ALSO sflwl(1), sfmike(1), sfspeaker(1) AUTHOR John Walker WWW: http://www.fourmilab.ch/ This program is in the public domain. 23 APR 1996 2