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- Frequently Asked Questions (FAQ) about opennap
- ==============================================
- Last updated on May 30, 2000.
-
- Q: What is opennap?
- A: opennap is an open source server which speaks the napster protocol
-
- Q: What is napster?
- A: See www.napster.com for information.
-
- Q: Is this project associated with napster.com?
- A: No, this server was developed without any communication with napster.com
-
- Q: Why can't I connect to the Napster.com servers?
- A: We are not affiliated with Napster, Inc. You should contact them for
- assistance.
-
- Q: What language is opennap written in?
- A: ANSI C.
-
- Q: How do I get more than 256 connections?
- A: On some systems without a poll() function, the maximum number of file
- descriptors that a process can have is controlled by the FD_SETSIZE
- macro. If you only have select(), try rerunning configure with the
- --fd-setsize=1024 option to specify a higher value.
-
- Q: How do I get more than 1024 connections under Linux?
- A: You can set the per-process file descriptor limit dynamically by piping
- an integer to /proc/sys/fs/file-max
- (eg. echo 8192 > /proc/sys/fs/file-max). The default value seems to
- 4096 which should be good enough.
-
- In order to utilize more than 1024 file descriptors, you must run
- opennap as root. Set your `connection_hard_limit' variable to something
- higher than 1024 and you should be set.
-
- Q: Isn't running opennap as root a security risk?
- A: Running anything as root can potentially be a security risk. Opennap
- attempts to reduce the risk by allowing you to specify the default
- uid/gid to run as. After setting the max file descriptors, opennap
- calls setuid() and setgid() to drop root privilege (by default it uses
- user nobody, group nobody).
-
- Q: Why do I get disconnected when I browse a user with many shared files?
- A: By default, OpenNap will only queue up to 100kbytes of data for a user
- to prevent a huge backlog of data for a dead/slow client. A user with
- 1000 shared files will often create more than 100kbytes of output, which
- triggers the dead client detection to prevent using too much resources.
-
- Q: How do I fix it?
- A: If you have memory to spare, you can increase the value of
- client_queue_length, or alternatively decrease the number of files
- returned by a browse command (max_browse_result) so that it does not cross
- the 100kbytes default limit.
-
- Q: How do I get my server listed on napigator.com?
- A: Go to www.napigator.com and look for the section on adding servers.
-