RSelenium rsDriver 对等 SSL 证书问题

Question

我正在尝试学习使用 RSelenium。我坚持只是尝试使用 rsDriver 启动服务器。我只是想运行下面的代码并得到以下错误:

rD <- rsDriver()
checking Selenium Server versions:
BEGIN: PREDOWNLOAD
Error in open.connection(con, "rb") : 
  Peer certificate cannot be authenticated with given CA certificates

我搜索了堆栈溢出，发现我们可以使用下面的方法为 rsDriver 提供选项，但我仍然遇到错误:

my_extra <- list("--ignore-ssl-errors=true", "--ssl-protocol=tlsv1", "--web-security=no")
rs <- rsDriver(extraCapabilities = my_extra)
checking Selenium Server versions:
BEGIN: PREDOWNLOAD
Error in open.connection(con, "rb") : 
  Peer certificate cannot be authenticated with given CA certificates

还有什么我想念的吗？

对于 httr::GET 函数，我可以使用以下方法绕过 SSL 证书:

set_config(config(ssl_verifypeer=0L)). 

但此方法不适用于 RSelenium::rsDriver。

这是我的系统规范:我的操作系统:Microsoft Windows 10

R version 3.4.1 (2017-06-30)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows >= 8 x64 (build 9200)

Matrix products: default

locale:
[1] LC_COLLATE=English_United States.1252 
[2] LC_CTYPE=English_United States.1252   
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C                          
[5] LC_TIME=English_United States.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] RCurl_1.95-4.8  bitops_1.0-6    httr_1.2.1      wdman_0.2.2    
[5] RSelenium_1.7.1

loaded via a namespace (and not attached):
 [1] Rcpp_0.12.12     XML_3.98-1.9     binman_0.1.0     assertthat_0.2.0
 [5] R6_2.2.2         jsonlite_1.5     semver_0.2.0     curl_2.7        
 [9] tools_3.4.1      yaml_2.1.14      compiler_3.4.1   caTools_1.17.1  
[13] openssl_0.9.6

Answer 1

rsDriver 使用 binman 包来处理相关二进制文件的下载。 selenium 项目在 JSON 文件中列出了它的版本，地址为 https://www.googleapis.com/storage/v1/b/selenium-release/o。如果您尝试，您应该会遇到同样的问题:

jsonlite::fromJSON("https://www.googleapis.com/storage/v1/b/selenium-release/o")

你可以mock相关的curl fundtion 使用类似的东西:

my_new_handle <- function(...){
  print("mocking")
  h <- .Call(curl:::R_new_handle, PACKAGE = "curl")
  curl:::handle_setopt(h, ..., ssl_verifypeer = FALSE)
  h
}
testthat::with_mock(
  `curl::new_handle` = my_new_handle,
  {
    selCommand <- httr::with_config(config(ssl_verifypeer=0L),wdman::selenium(‌​retcommand=TRUE))
  }
)