Unable to connect to Minecraft

[Kevin-Mattheus-Moerman]

I get the following when trying to connect to Minecraft when I execute connectToWorld(), can you help troubleshoot this? @aviks @Ellipse0934 Thanks!

ERROR: Unable to connect to the Minecraft World.
Stacktrace:
 [1] error(s::String)
   @ Base ./error.jl:33
 [2] connectToWorld(address::String, port::Int32)
   @ PiCraft ~/.julia/packages/PiCraft/aYw5Z/src/api.jl:34
 [3] connectToWorld()
   @ PiCraft ~/.julia/packages/PiCraft/aYw5Z/src/api.jl:31
 [4] top-level scope
   @ REPL[2]:1

caused by: IOError: connect: connection refused (ECONNREFUSED)
Stacktrace:
 [1] wait_connected(x::Sockets.TCPSocket)
   @ Sockets /buildworker/worker/package_linuxarmv7l/build/usr/share/julia/stdlib/v1.6/Sockets/src/Sockets.jl:532
 [2] connect(::Sockets.TCPSocket, ::String, ::Int32)
   @ Sockets /buildworker/worker/package_linuxarmv7l/build/usr/share/julia/stdlib/v1.6/Sockets/src/Sockets.jl:567
 [3] connect
   @ /buildworker/worker/package_linuxarmv7l/build/usr/share/julia/stdlib/v1.6/Sockets/src/Sockets.jl:552 [inlined]
 [4] connectToWorld(address::String, port::Int32)
   @ PiCraft ~/.julia/packages/PiCraft/aYw5Z/src/api.jl:32
 [5] connectToWorld()
   @ PiCraft ~/.julia/packages/PiCraft/aYw5Z/src/api.jl:31
 [6] top-level scope
   @ REPL[2]:1

I am using a RaspberryPi 4, 8Gb RAM with:

Julia Version 1.6.3 (2021-09-23)
Output of cat /etc/os-release:

PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"
NAME="Raspbian GNU/Linux"
VERSION_ID="10"
VERSION="10 (buster)"
VERSION_CODENAME=buster
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"

[Kevin-Mattheus-Moerman]

Note that I can connect when I use Python, by simply using:

from mcpi.minecraft import Minecraft
mc = Minecraft.create()

[Kevin-Mattheus-Moerman]

@Ellipse0934 @aviks do you have any suggestions? Is this repository still maintained? Thanks

[aviks]

This is basic functionality that does work for me, so I'm not sure what could be up. It's very strange that python connects, which Julia does not. By default, it tires to connect to localhost port 4711. Can you check if minecraft is actually listening on that port on your machine? Can you telnet to that host/port combination? The code is simply running Sockets.connect("localhost", 4711) -- maybe you can run this from the REPL and see what's up?