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INNFEED(1)									       INNFEED(1)

       innfeed - multi-host, multi-connection, streaming NNTP feeder.

       innfeed [ -a spool-dir ] [ -b directory ] [ -C ] [ -c filename ] [ -d num ] [ -e bytes ] [
       -h ] [ -l filename ] [ -m ] [ -M ] [ -o bytes ] [ -p file ] [ -S file ] [ -x ] [ -y ] [ -z
       ] [ -v ] [ file ]

       This man page describes version 1.0 of innfeed.

       Innfeed	implements  the NNTP protocol for transferring news between computers. It handles
       both the standard IHAVE protocol as well as the CHECK/TAKETHIS streaming  extension.  Inn-
       feed  can  feed	any  number of remote hosts at once and will open multiple connections to
       each host if configured to do so. The only limitations are the  process	limits	for  open
       file descriptors and memory.

       Innfeed has three modes of operation: channel, funnel-file and batch.

       Channel	mode  is  used	when no filename is given on the command line, the ``input-file''
       keyword is not given in the config file, and the ``-x'' option is not given.   In  channel
       mode  innfeed runs with stdin connected via a pipe to innd. Whenever innd closes this pipe
       (and it has several reasons during normal processing to do  so),  innfeed  will	exit.  It
       first will try to finish sending all articles it was in the middle of transmitting, before
       issuing a QUIT command. This means innfeed may take a while to exit depending on how  slow
       your peers are. It never (well, almost never) just drops the connection.

       Funnel-file  mode  is  used  when a filename is given as an argument or the ``input-file''
       keyword is given in the config file.  In funnel file mode it reads the specified file  for
       the  same  formatted  information  as innd would give in channel mode. It is expected that
       innd is continually writing to this file, so when innfeed reaches the end of the  file  it
       will check periodically for new information. To prevent the funnel file from growing with-
       out bounds, you will need to periodically move the file to the side (or simply remove  it)
       and  have  innd flush the file. Then, after the file is flushed by innd, you can send inn-
       feed a SIGALRM, and it too will close the file and open the  new  file  created	by  innd.
       Something like:

	      innfeed -p /var/run/news/innfeed.pid my-funnel-file &
	      while true; do
		   sleep 43200
		   rm -f my-funnel-file
		   ctlinnd flush funnel-file-site
		   kill -ALRM `cat /var/run/news/innfeed.pid`

       Batch mode is used when the ``-x'' flag is used.  In batch mode innfeed will ignore stdin,
       and will simply process any backlog created by a previously running innfeed. This mode  is
       not normally needed as innfeed will take care of backlog processing.

       Innfeed	expects  a couple of things to be able to run correctly: a directory where it can
       store backlog files and a configuration file to describe which peers it should handle.

       The configuration file is described in innfeed.conf(5). The ``-c'' option can be  used  to
       specify a different file.

       For  each  peer	(say, ``foo''), innfeed manages up to 4 files in the backlog directory: a
       ``foo.lock'' file, which prevents other instances of innfeed from  interfering  with  this
       one; a ``foo.input'' file which has old article information innfeed is reading for re-pro-
       cessing; a ``foo.output'' file where innfeed  is  writing  information  on  articles  that
       couldn't be processed (normally due to a slow or blocked peer); and a ``foo'' file.

       This  last  file (``foo'') is never created by innfeed, but if innfeed notices it, it will
       rename it to ``foo.input'' at the next opportunity and will start reading  from	it.  This
       lets  you create a batch file and put it in a place where innfeed will find it. You should
       never alter the .input or .output files of a running innfeed.

       The format of these last three files is:

	      /path/to/article <message-id>

       This is the same as the first two fields of the lines innd feeds to innfeed, and the  same
       as  the	first  two  fields  of	the lines of the batch file innd will write if innfeed is
       unavailable for some reason. When innfeed processes its own batch files it ignores  every-
       thing  after  the  first two whitespace separated fields, so moving the innd-created batch
       file to the appropriate spot will work, even though the lines are longer.

       Innfeed writes its current status to the file ``innfeed.status'' (or the file given by the
       ``-S''  option).  This  file  contains details on the process as a whole, and on each peer
       this instance of innfeed is managing.

       If innfeed is told to send an article to a host it  is  not  managing,  then  the  article
       information  will be put into a file matching the pattern ``innfeed-dropped.*'', with part
       of the file name matching the pid of the innfeed process that is writing to  it.   Innfeed
       will  not  process this file except to write to it. If nothing is written to the file then
       it will be removed if innfeed exits normally.

       Upon receipt of a SIGALRM innfeed will close the  funnel-file  specified  on  the  command
       line, and will reopen it (see funnel file description above).

       Innfeed	with  catch  SIGINT and will write a large debugging snapshot of the state of the
       running system.

       Innfeed will catch SIGHUP and will reload the config file.  See innfeed.conf(5)	for  more

       Innfeed will catch SIGCHLD and will close and reopen all backlog files.

       Innfeed will catch SIGTERM and will do an orderly shutdown.

       Upon  receipt of a SIGUSR1 innfeed will increment the debugging level by one, receipt of a
       SIGUSR2 will decrement it by one. The debugging level starts at zero  (unless  the  ``-d''
       option  it  used),  and	no debugging information is emitted. A larger value for the level
       means more debugging information. Numbers up to 5 are currently useful.

       There are 3 different categories of syslog entries for statistics.  Host,  Connection  and

       The  Host  statistics  are generated for a given peer at regular intervals after the first
       connection is made (or, if the remote is unreachable, after  spooling  starts).	The  Host
       statistics  give  totals  over all Connections that have been active during the given time
       frame. For example (broken here to fit the page, with ``vixie'' being the peer):

	 May 23 12:49:08 data innfeed[16015]: vixie checkpoint
		 seconds 1381 offered 2744 accepted 1286
		 refused 1021 rejected 437 missing 0 spooled 990
		 on_close 0 unspooled 240 deferred 10 requeued 25
		 queue 42.1/100:14,35,13,4,24,10

       These meanings of these fields are:

       seconds	 The time since innfeed connected to the host or since the statistics were  reset
		 by a ``final'' log entry.

       offered	 The  number  of  IHAVE commands sent to the host if it is not in streaming mode.
		 The sum of the number of TAKETHIS commands sent when no-CHECK mode is in  effect
		 plus the number CHECK commands sent in streaming mode (when no-CHECK mode is not
		 in effect).

       accepted  The number of articles which were sent to the remote host and accepted by it.

       refused	 The number of articles offered to the host that it it indicated it  didn't  want
		 because  it  had already seen the Message-ID.	The remote host indicates this by
		 sending a 435 response to an IHAVE command or a 438 response to a CHECK command.

       rejected  The number of articles transferred to the host that it did not accept because it
		 determined  either that it already had the article or it did not want it because
		 of the article's Newsgroups: or Distribution: headers,  etc.	The  remote  host
		 indicates  that  it  is  rejecting  the article by sending a 437 or 439 response
		 after innfeed sent the entire article.

       missing	 The number of articles which innfeed was told to offer to  the  host  but  which
		 were  not  present in the article spool.  These articles were probably cancelled
		 or expired before innfeed was able to offer them to the host.

       spooled	 The number of article entries that were written  to  the  .output  backlog  file
		 because  the  articles could not either be sent to the host or be refused by it.
		 Articles are generally spooled either because new  articles  are  arriving  more
		 quickly  than they can be offered to the host, or because innfeed closed all the
		 connections to the host and pushed all the articles currently in progress to the
		 .output backlog file.

       on_close  The number of articles that were spooled when innfeed closed all the connections
		 to the host.

       unspooled The number of article entries that were read from the .input backlog file.

       deferred  The number of articles that the host told innfeed to retry later  by  sending	a
		 431  or  436 response.  Innfeed immediately puts these articles back on the tail
		 of the queue.

       requeued  The number of articles that were in progress on connections when innfeed dropped
		 those connections and put the articles back on the queue.  These connections may
		 have been broken by a network problem or became unresponsive causing innfeed  to
		 time them out.

       queue	 The  first  number  is the average (mean) queue size during the previous logging
		 interval.  The second number is the maximum allowable	queue  size.   The  third
		 number  is  the  percentage  of  the  time that the queue was empty.  The fourth
		 through seventh numbers are the percentages of the time that the queue  was  >0%
		 to  25% full, 25% to 50% full, 50% to 75% full, and 75% to <100% full.  The last
		 number is the percentage of the time that the queue was totally full.

       If the ``-z'' option is used (see below), then when the peer  stats  are  generated,  each
       Connection  will log its stats too. For example, for connection number zero (from a set of

	 May 23 12:49:08 data innfeed[16015]: vixie:0 checkpoint
		 seconds 1381 offered 596 accepted 274
		 refused 225 rejected 97

       If you only open a maximum of one Connection to a remote, then there will be a close  cor-
       relation between Connection numbers and Host numbers, but in general you can't tie the two
       sets of number together in any easy or very meaningful way. When a  Connection  closes  it
       will always log its stats.

       If  all	Connections  for  a  Host  get	closed	together, then the Host logs its stats as
       ``final'' and resets its counters. If the feed is so busy that there's always at least one
       Connection open and running, then after some amount of time (set via the config file), the
       Host stats are logged as final and reset. This is to make generating  higher  level  stats
       from log files, by other programs, easier.

       There  is  one  log entry that is emitted for a Host just after its last Connection closes
       and innfeed is preparing to exit. This entry contains counts over the entire life  of  the
       process. The ``seconds'' field is from the first time a Connection was successfully built,
       or the first time spooling started. If a Host has been completely idle, it  will  have  no
       such log entry.

	 May 23 12:49:08 data innfeed[16015]: decwrl global
		 seconds 1381 offered 34 accepted 22
		 refused 3 rejected 7 missing 0

       The  final  log	entry is emitted immediately before exiting. It contains a summary of the
       statistics over the entire life of the process.

	 Feb 13 14:43:41 data innfeed-0.9.4[22344]: ME global
		       seconds 15742 offered 273441 accepted 45750
		       refused 222008 rejected 3334 missing 217

       -a     The ``-a'' flag is used to specify the top of the article spool tree. Innfeed  does
	      a  chdir(2)  to  this  directory,  so  it  should probably be an absolute path. The
	      default is <patharticles in inn.conf>.

       -b     The ``-b'' flag may be used to specify a different directory for backlog file stor-
	      age  and	retrieval.  If	the  path  is  relative  then  it  is  relative to <path-
	      spool in inn.conf>. The default is ``innfeed''.

       -c     The ``-c'' flag may be used to specify a different config  file  from  the  default
	      value.  If  the  path is relative then it is relative to <pathetc in inn.conf>. The
	      default is ``innfeed.conf''.

       -C     The ``-C'' flag is used to have innfeed simply check the config file, report on any
	      errors and then exit.

       -d     The  ``-d''  flag  may  be used to specify the initial logging level. All debugging
	      messages to to stderr (see the ``-l'' flag below.

       -e     The ``-e'' flag may be used to specify the size limit (in bytes)	for  the  .output
	      backlog  files  innfeed  creates. If the output file gets bigger than 10% more than
	      the given number, innfeed will replace the output file with the tail of the  origi-
	      nal version. The default value is 0, which means there is no limit.

       -h     Use the ``-h'' flag to print the usage message.

       -l     The   ``-l''  flag may be used to specify a different log file from stderr. As innd
	      starts innfeed with stderr attached to /dev/null using this option can be useful in
	      catching	any  abnormal  error messages, or andy debugging messages (all ``normal''
	      errors messages go to syslog).

       -M     If innfeed has been built with mmap support, then the ``-M'' flag turns OFF the use
	      of mmap(), otherwise it has no effect.

       -m     The  ``-m'' flag is used to turn on logging of all missing articles. Normally if an
	      article is missing, innfeed keeps a count, but logs no  further  information.  When
	      this flag is used, details about message-id and expected pathname are logged.

       -o     The ``-o'' flag sets a value of the maximum number of bytes of article data innfeed
	      is supposed to keep in memory. This doesn't work properly yet.

       -p     The ``-p'' flag is used to specify the filename to write the  pid  of  the  process
	      into.  A	relative path is relative to <pathrun in inn.conf>. The default is ``inn-

       -S     The ``-S'' flag specifies the name of the file to write the periodic staus  to.  If
	      the  path  is  relative  it  is  considered  relative to <pathlog in inn.conf>. The
	      default is ``innfeed.status''.

       -v     When the ``-v'' flag is given, version information is printed to	stderr	and  then
	      innfeed exits.

       -x     The  ``-x'' flag is used to tell innfeed not to expect any article information from
	      innd but just to process any backlog files that exist and then exit.

       -y     The ``-y'' flag is used to allow dynamic peer binding. If this  flag  is	used  and
	      article  information is received from innd that specifies an unknown peer, then the
	      peer name is taken to be the IP name too, and an association with  it  is  created.
	      Using  this  it is possible to only have the global defaults in the innfeed.conf(5)
	      file, provided the peername as used by innd is the same as the ip name.  Note  that
	      innfeed  with ``-y'' and no peer in innfeed.conf(5) would cause a problem that inn-
	      feed drops the first article.

       -z     The ``-z'' flag is used to cause each connection, in a parallel feed configuration,
	      to report statistics when the controller for the connections prints its statistics.


       When  using  the ``-x'' option, the config file entry's ``initial-connections'' field will
       be the total number of connections created and used--no matter  how  many  big  the  batch
       file, and no matter how big the ``max-connectiond'' field specifies. Thus a value of 0 for
       ``initial-connections'', means nothing will happen in ``-x'' mode.

       Innfeed does not automatically grab the file out of out.going--this needs to  be  prepared
       for it by external means.

       Probably too many other bugs to count.

       infeed.conf    config file.
       innfeed	      directory for backlog files.

       Written	by James Brister <brister@vix.com> for InterNetNews.  This is revision 1.7, dated


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