Impossible to send inputs to the dedicated server (GNU/Linux)

[b l a n k]

Hello, I start my server with this script:

#!/bin/bash

cluster_name="whatever" # Cluster's directory name

dontstarve_dir="$HOME/.klei/DoNotStarveTogether"
install_dir="$dontstarve_dir/.dontstarvetogether_dedicated_server"

function fail()
{
        echo Error: "$@" >&2
        exit 1
}

function check_for_file()
{
        if [ ! -e "$1" ]; then
                fail "Missing file: $1"
        fi
}

check_for_file "$dontstarve_dir/$cluster_name/cluster.ini"
check_for_file "$dontstarve_dir/$cluster_name/cluster_token.txt"
check_for_file "$dontstarve_dir/$cluster_name/Master/server.ini"
check_for_file "$dontstarve_dir/$cluster_name/Caves/server.ini"

check_for_file "$install_dir/bin64"

cd "$install_dir/bin64" || fail

run_shared=(./dontstarve_dedicated_server_nullrenderer_x64)
run_shared+=(-console)
run_shared+=(-cluster "$cluster_name")
run_shared+=(-monitor_parent_process $$)

"${run_shared[@]}" -shard Caves  | sed 's/^/Caves:  /' &
"${run_shared[@]}" -shard Master | sed 's/^/Master: /'

Which is basically the recommended Klei's starting script file: https://accounts.klei.com/assets/gamesetup/linux/run_dedicated_servers.sh

Once I launch the ./run_dedicated_servers.sh , whatever input I enter is ignored. I tried with c_announce("test") and c_shutdown(), I'm pretty sure nothing works.

Does anyone else have this issue ?

Thanks

[chaosmonkey]

This is happening because the script is running the dst server as a sub process, and all of your input is being directed to bash, not dst. If you want to write to DST instead, you either need to set up a pipe or simply exec dst rather than call it.

[b l a n k]

22 hours ago, chaosmonkey said:

This is happening because the script is running the dst server as a sub process, and all of your input is being directed to bash, not dst. If you want to write to DST instead, you either need to set up a pipe or simply exec dst rather than call it.

Yes I already thought that was the problem so I made some tests about it.

Using the exec prefix on the last line (right behind ""${run_shared[@]}" -shard Master" ) doesn't fix the issue (my inputs get ignored the same).

Sending the commands directly to the "dontstarve_dedicated_server_nullrenderer_x64" process' STDIN with some `echo "c_announce('test')" > /proc/PID/fd/0` doesn't work either (tried with both the Caves and Master shards).

I failed to set up a mkfifo, I don't know how to do to make it work...

 

[Daniel86268]

You could try running the DST Server(s) in screen sessions like this:

screen -S DSTMaster DST_MasterServer_Launch
screen -S DSTCaves DST_CavesServer_Launch

And then pass your comands to the screen sessions using

screen -S DSTMaster -X YourCommand $'ls -l\n'
screen -S DSTCaves -X YourCommand $'ls -l\n'

For a Shutdown it would look like this for example (I think):

screen -S DSTMaster -X c_shutdown() $'ls -l\n'
screen -S DSTCaves -X c_shutdown() $'ls -l\n'

 

 

Then again, the DST servers should receive the commands from the parent session thanks to the -monitor_parent_process $$ parameter. I could be wrong though...

[b l a n k]

11 hours ago, Daniel86268 said:

You could try running the DST Server(s) in screen sessions like this:

screen -S DSTMaster DST_MasterServer_Launch
screen -S DSTCaves DST_CavesServer_Launch

And then pass your comands to the screen sessions using

screen -S DSTMaster -X YourCommand $'ls -l\n'
screen -S DSTCaves -X YourCommand $'ls -l\n'

For a Shutdown it would look like this for example (I think):

screen -S DSTMaster -X c_shutdown() $'ls -l\n'
screen -S DSTCaves -X c_shutdown() $'ls -l\n'

 

 

Then again, the DST servers should receive the commands from the parent session thanks to the -monitor_parent_process $$ parameter. I could be wrong though...

That doesn't work, in fact I was already using screen, so I tried this first, before anything else. However, my command looked like this

screen -S DST -X stuff "c_announce('test')^M"

(the ^M is to simulate the Enter key, tried with and without)

I also thought the -monitor_parent_process PID could be used to send command, but no success either.

I must be doing something fundamentally wrong if you guys have success with those methods but I don't :/

[Daniel86268]

Personally I usually always just run my DST Servers when I'm playing with friends, so I haven't run into this issue, but this could also be a workaround for you:

Since you are already fiddling with screen, you can just do a

screen -rx

to reattach the screen session to your current console, and put the commands natively in there.

If you have multiple screen sessions you can list the running screen sessions using

screen -ls

and reattach a specific screen session using

screen -r <session ID>

Like this:

(Screenshot and individual commands taken from here)

 

For automation it would be annoying/unusable, but if you want to manually announce something and/or shut down the server gracefully, this should work for now.

[b l a n k]

Alright problem solved, I had "console_enabled = false" under "[MISC]" in my "cluster.ini" file. (Yes, I know...) Little did I know the "-console" parameter was actually deprecated. Thanks anyway guys, sorry for the trouble...

And I confirm sending commands to the bash script works (probably thanks to the "-monitor_parent_process"), there is no need to use exec or pipes.