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Finally, the payoff from all of this refactoring: now, when a proxy prompts interactively during connection setup, you get a message in advance telling you which Interactor is originating the following messages. To achieve this, I've arranged to link Interactors together into a list, so that any Interactor created by a proxy has a 'parent' pointer pointing to the Interactor its client passed to new_connection(). This allows interactor_announce() to follow the links back up the chain and count them, so that it knows whether it's a primary connection, or a proxy, or a proxy-for-a-proxy, or more generally an nth-order proxy, and can include that in its announcement. And secondly, once interactor_announce() reaches the top of the chain, it can use that as a storage location agreed on by all Interactors in the whole setup, to tell each other which one of them was the last to do anything interactive. Then, whenever there's a change of Interactor, a message can be printed to indicate it to the user; and when the same Interactor does multiple things in succession, you don't get a slew of pointless messages in between them all.
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.