获得通过SSL的网站内容与R中HTTR [英] Get site content over SSL with httr in R

问题描述

我试图用R. HTTP POST方法来从我的服务器JSON数组

I'm trying to fetch a JSON array from my server using the HTTP POST method in R.

我同时使用 POST 函数试图从 HTTR 和的getURL 从 RCurl 但都返回错误。

I've tried using both the POSTfunction from httrand the getURLfunction from RCurl but both return errors.

cafile <- system.file("CurlSSL", "cacert.pem", package = "RCurl")
url    <- "https://example.com/query/getData.php"

POST(url,body=NULL)
POST(url,body=NULL,config(cainfo=cafile))

getURL(url)
getURL(url,cainfo=cafile)

在 POST 函数给出错误的是（两个电话）：

The error given by the POST function is (for both calls):

Error in curl::curl_fetch_memory(url, handle = handle) : 
  SSL peer certificate or SSH remote key was not OK

在的getURL 函数给出错误的是（没有配置（cainfo =凭证档案错误））：

The error given by the getURL function is (without config(cainfo=cafile)):

* Hostname was NOT found in DNS cache
*   Trying 162.xxx.xxx.xxx...
* connect to 162.xxx.xxx.xxx port 443 failed: Connection refused
*   Trying 130.yyy.yyy.yyy...
* Connected to example.com (130.yyy.yyy.yyy) port 443 (#0)
* found 175 certificates in /etc/ssl/certs/ca-certificates.crt
* gnutls_handshake() warning: The server name sent was not recognized
* failed to get server cert
* Closing connection 0
Error in function (type, msg, asError = TRUE)  : 
  gnutls_handshake() warning: The server name sent was not recognized

我怀疑这事做有R自运行：

I'm suspecting this has something to do with R since running:

curl 'https://example.com/query/getData.php'

在命令行返回预期的结果。

from the command line return the expected result.

服务器与COMODO SSL证书的Apache2服务器。
在 /etc/apache2/sites-enabled/000-default.conf 服务器名称设置为

The server is a apache2 server with COMODO SSL certificate. In /etc/apache2/sites-enabled/000-default.conf the server name is set to

ServerName www.example.com  

任何帮助将是一个最preciated

Any help would be most apreciated

推荐答案

的 HTTR 套餐包括它自己的CA束所以这可能不是问题。更有可能的是一个服务器端的配置SNI问题或与您的证书有问题

The httr package includes it's own CA bundle so this probably not the issue. More likely a server side SNI config problem or a problem with your certificate

不幸的是你有没有贴有一个实际的URL重复的例子。但随着新OpenSSL软件包的最新版本，你可以轻松地调试您的服务器证书：

Unfortunately you haven't posted a reproducible example with an actual URL. But with the latest version of the new openssl package you can easily debug your server cert:

library(openssl)
cert <- download_ssl_cert("www.r-project.org")
print(cert)
print(as.list(cert[[1]]))

也可以尝试验证它

Also try validating it

verify_cert(cert, ca_bundle())

这可能会给上有什么错你的证书的提示。

This might give a hint on what's wrong with your certificate.

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