访问客户端本地网络上的文件，但不能从 Web 服务器访问本地计算机

Question

I have a server that I am uploading files to every 30 minutes. That server is running a shiny server which displays that data.

The server is here

http://45.55.208.171:3838/austin/

Those files are uploaded from machines on the local network to the remote server that is running the shiny app. Is there anyway to allow the remote server to have access to those files on the users local network so it could be real time instead of 30 minute batches? The users are using chrome and are behind a fire wall and proxy server.

Answer 1

There is a shiny control ( fileInput ) that will allow a user to select multiple files, and then send them to the server where they will be stored in a temp location that can then be read by the server.

Here is an example program that uses it:

library(shiny)
s <- shinyServer(function(input,output) {
  output$filetable <- renderTable({
    if (is.null(input$files)) {
      # User has not uploaded a file yet
      return(NULL)
    }
    input$files
  })
})

u <- shinyUI(pageWithSidebar(
  headerPanel("File input test"),
  sidebarPanel(
    fileInput("files","File data",multiple = TRUE)
  ),
  mainPanel(
    tableOutput("filetable")
  )
))

shinyApp(ui=u,server=s)

It looks like this after selecting three example csv files: