How do I get RCurl to connect to POST SSL on OS X Yosemite?

问题

Since upgrading to OS X Yosemite 10.10.2, I have been unable to use RCurl to send POSTs via SSL. The error message I get is:

Error in function (type, msg, asError = TRUE) :
    SSLRead() return error -9806

This strongly resembles the curl error here: osx 10.10 Curl POST to HTTPS url gives SSLRead() error

So I ran the instructions to install libcurl via home-brew, per the answers on that question, but I cannot figure out how to link RCurl to the new libcurl. curl-config still returns the old installation of libcurl.

> packageVersion("RCurl") 
[1] ‘1.95.4.5’

> version 
platform x86_64-apple-darwin13.4.0 
arch x86_64 
os darwin13.4.0 
system x86_64, darwin13.4.0 
status 
major 3 
minor 1.2 
year 2014 
month 10 
day 31 
svn rev 66913 
language R 
version.string R version 3.1.2 (2014-10-31) 
nickname Pumpkin Helmet 

回答1:

Figured it out!

First, I installed brew from homebrew:

brew install --with-libressl curl

Then, I copied the curl-config in place:

sudo cp /usr/bin/curl-config /usr/bin/curl-config.bak
sudo cp /usr/local/opt/curl/bin/curl-config /usr/bin/curl-config

Then, I reinstalled RCurl:

install.packages("RCurl", type="source")

And it worked again.

来源：https://stackoverflow.com/questions/28506568/how-do-i-get-rcurl-to-connect-to-post-ssl-on-os-x-yosemite