topic Error connecting from SWAT R to CAS server in Administration and Deployment

Error connecting from SWAT R to CAS server

kelekar — Thu, 14 Apr 2022 18:08:58 GMT

I am trying to connect to the CAS server using the SWAT R. I have downloaded 64 bit R and all the required pre-requisites as described in https://github.com/sassoftware/R-swat

When I try to run the command to connect

conn <- swat::CAS('host', 8887, 'http',username='abcd',password='abcd')

I get the following error

Error in curl::curl_fetch_memory(url, handle = handle) :
Empty reply from server.

On the server I see the CAS admin listening on 8887 but only on the IPV6.

Thanks in advance.

Atul

Re: Error connecting from SWAT R to CAS server

kelekar — Thu, 14 Apr 2022 17:58:58 GMT

In the CAS logs I see the following ERROR
ERROR [00000018] MAIN NoUser MAIN [skstssl.c:1291] - Secure communications error status 807ff03c description "::ffff:NN.NN.NNN.NN: The data received is not a valid SSL/TLS packet."

Re: Error connecting from SWAT R to CAS server

gwootton — Thu, 14 Apr 2022 19:28:23 GMT

Looks like SWAT needs to be told this is a secure connection, i.e. set the protocol as HTTPS instead of HTTP.

Connect and Start a Session
https://go.documentation.sas.com/doc/en/pgmsascdc/9.4_3.5/caspg3r/p0paczu3x2qu0wn1p94ees7y5ls8.htm

Re: Error connecting from SWAT R to CAS server

kelekar — Thu, 14 Apr 2022 21:27:20 GMT

Thanks a lot. Changing it to https worked.