842ca62336
Currently the Heimdal code calls connect(2) on TCP connexions to the KDC without setting O_NONBLOCK. This code implements a timed_connect() function which will in the case of SOCK_STREAM sockets put the socket into non-blocking mode prior to calling connect and use select(2) to apply the configured timeout to connect completion. This does not entirely solve the problem of potential timeouts in the code as it is still possible to block while writing to the socket. A proper implementation would also likely start new connexions after a short interval before timing out existing connexions and return the results from the first KDC which successfully responds but we did not do that yet. This patch is from heimdal-1-5-branch patches: 5b55e4429caed27b32aac4bc5930f2672a43f273 6b66321b271ee4672e70ad349ec796dd755cf897 2e12c7f3e8dca7e1696ebd92199617ce413565e7 Squashed together along with a quick shadowed variable warning fix to allow it to compile with --enable-developer.
Heimdal is a Kerberos 5 implementation. For information how to install see <http://www.h5l.org/compile.html>. There are briefer man pages for most of the commands. Bug reports and bugs are appreciated, see more under Bug reports in the manual on how we prefer them: <heimdal-bugs@h5l.org>. For more information see the web-page at <http://www.h5l.org/> or the mailing lists: heimdal-announce@sics.se low-volume announcement heimdal-discuss@sics.se high-volume discussion send a mail to heimdal-announce-request@sics.se and heimdal-discuss-request@sics.se respectively to subscribe.