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mirror of https://git.tartarus.org/simon/putty.git synced 2025-01-09 17:38:00 +00:00
putty-source/doc
Simon Tatham c62b7229c1 Bug workaround to delay sending our SSH greeting.
Ian Jackson recently tried to use the recipe in the psusan manpage for
talking to UML, and found that the connection was not successfully set
up, because at some point during startup, UML read the SSH greeting
(ok, the bare-ssh-connection greeting) from its input fd and threw it
away. So by the time psusan was run by the guest init process, the
greeting wasn't there to be read.

Ian's report: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=991958

I was also able to reproduce this locally, which makes me wonder why I
_didn't_ notice it when I originally wrote that part of the psusan man
page. It worked for me before, honest! But now it doesn't.

Anyway. The ssh verstring module already has a mode switch to decide
whether we ought to send our greeting before or after waiting for the
other side's greeting (because that decision varies between client and
server, and between SSH-1 and SSH-2). So it's easy to implement an
override that forces it to 'wait for the server greeting first'.

I've added this as yet another bug workaround flag. But unlike all the
others, it can't be autodetected from the server's version string,
because, of course, we have to act on it _before_ seeing the server's
greeting and version string! So it's a manual-only flag.

However, I've mentioned it in the UML section of the psusan man page,
since that's the place where I _know_ people are likely to need to use
this flag.
2021-08-14 11:46:21 +01:00
..
blurb.but Integrate the 'doc' subdir into the CMake system. 2021-05-03 17:01:55 +01:00
chm.css Minor style tweaks for the CHM. 2006-12-19 10:28:44 +00:00
chmextra.but Integrate the 'doc' subdir into the CMake system. 2021-05-03 17:01:55 +01:00
CMakeLists.txt Allow standalone cmake in the doc subdirectory. 2021-05-08 10:37:41 +01:00
config.but Bug workaround to delay sending our SSH greeting. 2021-08-14 11:46:21 +01:00
errors.but Tweaks to SUPDUP documentation. 2021-02-21 16:44:51 +00:00
faq.but Docs updates. 2021-05-02 08:05:43 +01:00
feedback.but Tweaks to SUPDUP documentation. 2021-02-21 16:44:51 +00:00
gs.but Docs: correct some control names. 2021-04-20 16:25:49 +01:00
index.but Document PPK format parameters, and --reencrypt. 2021-04-20 15:35:50 +01:00
intro.but Docs: de-emphasise VMS. 2021-04-17 13:27:26 +01:00
man-pageant.but uxpgnt: Briefly document --symlink and --test-sign. 2021-04-19 15:40:35 +01:00
man-plink.but Fix grammar nit. 2021-07-10 10:32:04 +01:00
man-pscp.but Fix grammar nit. 2021-07-10 10:32:04 +01:00
man-psftp.but Fix grammar nit. 2021-07-10 10:32:04 +01:00
man-psocks.but Man page for psocks. 2021-04-08 01:06:06 +01:00
man-psusan.but Bug workaround to delay sending our SSH greeting. 2021-08-14 11:46:21 +01:00
man-pterm.but Rename manpage sources in the doc subdirectory. 2020-12-13 12:36:38 +00:00
man-putty.but Fix grammar nit. 2021-07-10 10:32:04 +01:00
man-puttygen.but Document PPK format parameters, and --reencrypt. 2021-04-20 15:35:50 +01:00
man-puttytel.but Document new backend command-line options. 2021-02-21 16:44:51 +00:00
mancfg.but Now that Halibut is capable of generating man pages better than I 2004-03-24 19:36:04 +00:00
manpages.but Now that Halibut is capable of generating man pages better than I 2004-03-24 19:36:04 +00:00
pageant.but winpgnt: add a help button to async passphrase prompt. 2021-04-22 20:00:46 +01:00
pgpkeys.but GPG key rollover. 2021-08-14 08:02:27 +01:00
plink.but Update version number for 0.76 release. 2021-07-10 10:39:20 +01:00
pscp.but Update version number for 0.76 release. 2021-07-10 10:39:20 +01:00
psftp.but File transfer tools: sanitise remote filenames and stderr. 2019-02-20 07:27:22 +00:00
pubkey.but Docs updates. 2021-05-02 08:05:43 +01:00
pubkeyfmt.but PuTTYgen: explicitly use 'Kbyte' in Argon2 naming. 2021-04-19 17:03:05 +01:00
site.but Hmm, that relative link wasn't too good. Try a more helpful one. 2003-10-30 10:41:59 +00:00
sshnames.but Document agent protocol extensions. 2021-04-05 18:44:03 +01:00
udp.but Remove the 'compile-once' design principle. 2021-04-21 21:55:26 +01:00
using.but Document -no-trivial-auth more thoroughly. 2021-07-09 23:55:49 +01:00
vids.but Rework versioning system to not depend on Subversion. 2014-09-24 10:33:13 +00:00