等待时间过长，download.file不起作用

Question

我有一个内部网页，在下载开始之前执行SQL查询（加载超过6分钟），尝试使用download.file时，我收到一个错误消息（download.file在其他类似的内部网页上也可以正常工作）。

下面是我的控制台消息，我已经隐藏了网址

Error in download.file(url = ., destfile = paste(getwd(), "/input/", file.name,  : 
  cannot open URL ''
In addition: Warning message:
In download.file(url = ., destfile = paste(getwd(), "/input/", file.name,  :
  InternetOpenUrl failed: 'The operation timed out'
Called from: download.file(url = ., destfile = paste(getwd(), "/input/", 
    file.name, sep = ""), quiet = TRUE)