jl的readguarded()允许超时读取错误异常被忽略。只要你的套接字read有一个合理的超时（它应该），自己处理读取失败可能会有所帮助，因为这可以给予你一个新的与服务器的websocket连接。例如：

map(container) do item
   @async while true
       try
           WebSockets.open(url) do ws  # reopens the websocket on while loop
              payload = generatepayload(item)
              if writeguarded(ws, JSON3.write(payload))
                  while isopen(ws)
                     data, success = read(ws)
                     ### process data 
                  end
              end
           end
       catch y
           @debug y  # log something here
           maybe check server some other way here and break if offline
       end
    end
end