[julia-users] Extra data on socket communication

[Micah McClimans]

This is a clone of a question on Stackoverflow (original here: 
http://stackoverflow.com/questions/27585013/extra-data-on-socket-communication-in-julia
 
)

I'm working on getting a grip on socket programming in Julia, and I'm 
getting, what seems to me at least, a really weird bug. This is my testing 
program:

    function startServer(port::Integer)
        server=listen(port)
        while true
            sock=accept(server)
            @async while true
                sig=read(sock,Int64)
                if sig==0
                    write(sock,rand(Int64))
                elseif sig==1
                    raw=read(sock,Int64)
                    write(sock,raw+1)
                end
            end
        end
    end
    
    function dumbwrite(connection)
        while true
            kappa=read(connection,Int64)
            println(STDOUT,kappa)
        end
    end
    
    function roll(port::Integer)
        @spawn startServer(port)
        clientside=connect(port)
        @spawn dumbwrite(clientside)
    
        write(clientside,0)
        write(clientside,0)
        write(clientside,1)
        write(clientside,56)
        write(clientside,1)
        write(clientside,34)
        write(clientside,1)
        write(clientside,34)
        write(clientside,0)
        write(clientside,0)
        write(clientside,0)
        write(clientside,0)
        write(clientside,0)
        write(clientside,0)
    end


The output this generates looks like this:

    julia> roll(9884)
    8104588522876597874
    -8585609018870996947
    57
    35
    35
    -2674324649969450471
    -7370669957356464799
    6388910330871895635
    -4817888634766788568
    -4381550835994661230
    8
    -8151987627137122115

Where is that 8 coming from? No matter how many extra copies of 
`write(clientside,0)` I put in there, there is always an 8 output in the 
second to last line, and I have no clue where it is coming from. Any help 
would be great.