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| author | Eric S. Raymond <esr@thyrsus.com> | 1996-10-19 19:03:31 +0000 |
|---|---|---|
| committer | Eric S. Raymond <esr@thyrsus.com> | 1996-10-19 19:03:31 +0000 |
| commit | 07513709eed70fe7fcf7361eaf17640ed74683bf (patch) | |
| tree | ab22ca5334e422d176327e5162c7390dc3c369aa /fetchmail.man | |
| parent | 5bd3f8287149511024b95c01fb4212e60ec6fe13 (diff) | |
| download | fetchmail-07513709eed70fe7fcf7361eaf17640ed74683bf.tar.gz fetchmail-07513709eed70fe7fcf7361eaf17640ed74683bf.tar.bz2 fetchmail-07513709eed70fe7fcf7361eaf17640ed74683bf.zip | |
Avoid the socket-exhaustion bug.
svn path=/trunk/; revision=354
Diffstat (limited to 'fetchmail.man')
| -rw-r--r-- | fetchmail.man | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fetchmail.man b/fetchmail.man index 03a72a69..b2165186 100644 --- a/fetchmail.man +++ b/fetchmail.man @@ -642,6 +642,16 @@ to the mailserver. This creates a risk that name/password pairs might be snaffled with a packet sniffer or more sophisticated monitoring software. .PP +Under Linux, if fetchmail is run in daemon mode with the network +inaccessible, each poll leaves a socket allocated but in CLOSE state +(this is visible in netstat(1)'s output). For some reason, these +sockets aren't garbage-collected until \fIfetchmail\fR exits. When +whatever kernel table is involved fills up, fetchmail can no longer +run even if the network is up. This appears \fInot\fR to be a socket +leak in \fIfetchmail\fR, but rather some glitch or misfeature in the system +network code. To avoid this problem, fetchmail commits seppuku after +too many unsuccessful socket opens. +.PP Send comments, bug reports, gripes, and the like to Eric S. Raymond <esr@thyrsus.com>. .SH SEE ALSO |