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af6a19e962
If you try to use a saved session for SSH proxying which specifies a protocol that is not SSH or bare-SSH-connection, you get a clean error return from the proxy setup code - *provided* it's at least a protocol known to this particular build of PuTTY. If it's one so outlandish that backend_vt_from_proto returns NULL, there'd have been a crash. I don't think any such protocol currently exists, but if in the next version of PuTTY some additional protocol becomes supported, it will trip this error in the current version. Spotted by Coverity.
This is the README for PuTTY, a free Windows and Unix Telnet and SSH
client.
PuTTY is built using CMake <https://cmake.org/>. To compile in the
simplest way (on any of Linux, Windows or Mac), run these commands in
the source directory:
cmake .
cmake --build .
Documentation (in various formats including Windows Help and Unix
`man' pages) is built from the Halibut (`.but') files in the `doc'
subdirectory using `doc/Makefile'. If you aren't using one of our
source snapshots, you'll need to do this yourself. Halibut can be
found at <https://www.chiark.greenend.org.uk/~sgtatham/halibut/>.
The PuTTY home web site is
https://www.chiark.greenend.org.uk/~sgtatham/putty/
If you want to send bug reports or feature requests, please read the
Feedback section of the web site before doing so. Sending one-line
reports saying `it doesn't work' will waste your time as much as
ours.
See the file LICENCE for the licence conditions.