DaggerWebDash: Use gethostname

Author: jpsamaroo

lib/DaggerWebDash/src/d3.jl

@@ -57,7 +57,7 @@ const D3R_ACTUAL_PORT = Dict{Int,Int}()
 # TODO: Concrete socket types
 const D3R_CLIENT_SOCKETS = Dict{Int,Dict{Int,Vector{Any}}}()
 
-const D3R_WORKER_HOST_MAP = Dict{Int,IPAddr}()
+const D3R_WORKER_HOST_MAP = Dict{Int,Union{IPAddr,String}}()
 const D3R_WORKER_PORT_MAP = Dict{Int,Int}()
 
 struct D3Renderer
@@ -311,7 +311,11 @@ end
 function worker_host_port(id::Int, port::Int, port_range::UnitRange)
     worker_host = get!(D3R_WORKER_HOST_MAP, port) do
         worker_host, worker_port = remotecall_fetch(id, port) do port
-            (MemPool.host, get_actual_port(port, port_range))
+            host = gethostname()
+            if isempty(host)
+                host = getipaddr()
+            end
+            (host, get_actual_port(port, port_range))
         end
         D3R_WORKER_PORT_MAP[port] = worker_port
         worker_host