It is not possible to call Page in two different Pluto notebooks at the same time

[diegozea]

Hi!

It is not possible to call Page in two different Pluto notebooks at the same time. When you try to call Page() in the second one, the following error appears:

begin
    using JSServe
    Page()
end

Is it possible to make each notebook automatically use a different address?

Best,

Failed to show value:

IOError: listen: address already in use (EADDRINUSE)

uv_error@libuv.jl:97[inlined]
#listen#13@Sockets.jl:632[inlined]
#listen#10@Sockets.jl:625[inlined]
listen@Sockets.jl:623[inlined]
var"#start#24"(::Bool, ::typeof(JSServe.start), ::JSServe.Server)@server.jl:296
var"#Server#18"(::Bool, ::JSServe.Routes, ::JSServe.Routes, ::Type{JSServe.Server}, ::JSServe.App, ::String, ::Int64)@server.jl:232
get_server()@server.jl:311
show(::IOContext{IOBuffer}, ::MIME{Symbol("text/html")}, ::JSServe.Page)@display.jl:89
show_richest(::IOContext{IOBuffer}, ::Any)@PlutoRunner.jl:795
var"#sprint_withreturned#32"(::IOContext{Base.DevNull}, ::Int64, ::typeof(Main.PlutoRunner.sprint_withreturned), ::Function, ::JSServe.Page)@PlutoRunner.jl:732
format_output_default(::Any, ::Any)@PlutoRunner.jl:656
#format_output#21@PlutoRunner.jl:673[inlined]
formatted_result_of(::Base.UUID, ::Bool, ::Nothing, ::Module)@PlutoRunner.jl:589
top-level scope@none:1

[SimonDanisch]

You need to set listen_port to some different numbers

[diegozea]

Thanks! I wondered if that could be done automatically by JSServe. Otherwise, It could be great if the error message could suggest that fix. Best,

[SimonDanisch]

Yeah, i've put quite a bit of thought into this, but couldn't find a method to reliably find blocked ports cross platform. And the error also doesn't get thrown reliably, so it may just hang, so I also can't throw a better error... If you find any way to improve the situation let me know!