PrecompileMQTT payload contains temporary socket name invalid in Windows

[divbyzerofordummies]

When precompiling PrecompileMQTT, the precompile workload creates a MQTTClient.MockMQTTBroker by providing it a socket name /tmp/testmqtt.sock.
This name is then given as an argument to the listen function of the Sockets library, which creates a PipeServer and binds it to the given path:

function listen(path::AbstractString)
    sock = PipeServer()
    bind(sock, path) || throw(ArgumentError("could not listen on path $path"))
    return listen(sock)
end

However, according to here,

Windows doesn't support arbitrary paths, it requires that they conform to a specific pattern such that their name prefix (\\.\pipe\) uniquely identifies the filetype

A valid pipe name under Windows could be (?)

\\.\pipe\tmp\testmqtt.sock

At least this worked for me.

Version: 0.3.1 (specifically, Git hash 23f5429

[divbyzerofordummies]

Might be the reason for this issue in MQTT.jl.

[divbyzerofordummies]

Without the fix, under Windows, I get this:

ERROR: LoadError: ArgumentError: could not listen on path /tmp/testmqtt.sock
Stacktrace:
  [1] listen(path::String)
    @ Sockets C:\Julia\share\julia\stdlib\v1.10\Sockets\src\PipeServer.jl:79
  [2] MockMQTTBroker(args::String)
    @ MQTTClient C:\Users\username\.julia\dev\MQTTClient\src\utils.jl:160
  [3] macro expansion
    @ C:\Users\username\.julia\dev\MQTTClient\ext\PrecompileMQTT.jl:124 [inlined]
  [4] macro expansion
    @ C:\Users\username\.julia\packages\PrecompileTools\L8A3n\src\workloads.jl:78 [inlined]
  [5] macro expansion
    @ C:\Users\username\.julia\dev\MQTTClient\ext\PrecompileMQTT.jl:21 [inlined]
  [6] macro expansion
    @ C:\Users\username\.julia\packages\PrecompileTools\L8A3n\src\workloads.jl:140 [inlined]
  [7] top-level scope
    @ C:\Users\username\.julia\dev\MQTTClient\ext\PrecompileMQTT.jl:13
  [8] include
    @ .\Base.jl:495 [inlined]
  [9] include_package_for_output(pkg::Base.PkgId, input::String, depot_path::Vector{String}, dl_load_path::Vector{String}, load_path::Vector{String}, concrete_deps::Vector{Pair{Base.PkgId, UInt128}}, source::String)
    @ Base .\loading.jl:2222
 [10] top-level scope
    @ stdin:3
in expression starting at C:\Users\username\.julia\dev\MQTTClient\ext\PrecompileMQTT.jl:2