在React Native中实现Signalr

Question

我正在尝试在react native中实现signalR， 我的问题是在调试模式打开时运行代码，但是在发行版中并且在调试模式关闭时运行，我有点得到无法与服务器协商的错误...

当我在某些调用中获得console.wanr（err）时，它给了我一些错误，例如 “ {” line“：212081，” column“：33，” sourceURL“：http://10.0.2.2:8081/index.boundle?platform=android&dev=true&minify=false”}“

library(shiny)
library(shinyWidgets)
library(dplyr)

# make a data frame for choices

level1 <- LETTERS[1:3]
level2 <- 1:5

df <- expand.grid(level1, level2, stringsAsFactors = FALSE) %>% 
  mutate(Var2=paste(Var1, Var2)) %>% 
  arrange(Var1)

ui <- fluidPage(
  mainPanel(
    fluidRow(
      column(width = 3, "some space"),
      column(
        width = 9,
        align = "center",
        radioGroupButtons(
          inputId = "level1",
          label = "",
          status = "success",
          size = "lg",
          direction = "horizontal",
          justified = FALSE,
          width = "100%",
          individual = TRUE,
          checkIcon =  setNames(
            object = lapply(unique(df$Var1), function(x) icon("check")),
            nm = rep("yes", length(unique(df$Var1)))),
          choiceNames = unique(df$Var1),
          choiceValues = unique(df$Var1) 
        ),
        uiOutput("level2"),
        tags$hr(),
        dataTableOutput("tbl")
      )
    )
))

server <- function(input, output, session) {

  # render the second level of buttons
  make_level <- reactive({

    df2 <- filter(df, Var1 %in% input$level1)

    radioGroupButtons(
      inputId = "level2",
      label = "",
      status = "primary",
      size = "lg",
      direction = "horizontal",
      justified = FALSE,
      width = "100%",
      individual = TRUE,
      checkIcon =  setNames(
        object = lapply(unique(df2$Var2), function(x) icon("check")),
        nm = rep("yes", length(unique(df2$Var2)))),
      choiceNames = as.list(unique(df2$Var2)),
      choiceValues = as.list(unique(df2$Var2))
    )
  })

  output$level2 <- renderUI({
    make_level()
  })

  output$tbl <- renderDataTable({
    df %>% filter(Var1 == req(input$level1), Var2 == req(input$level2))
  })

}

shinyApp(ui, server)