web services - Timeout error when connecting to a particular webservice API from corporate network using R -

i trying connect webservices corporate network , facing problems.

i using following set of statements

library(httr)

swapiurl<-"http://swapi.co/api/planets/?search=alderaan"

alderaan <- get(swapiurl)

error in curl::curl_fetch_memory(url, handle = handle) :

couldn't connect server

i above error message.

i enabled proxy settings below

sys.setenv(http_proxy="http://aproxy.xxxxx.xx.xxxxxxx.net:8083")

and again run above command , works

alderaan <- get(swapiurl)

alderaan$status_code

[1] 200

however, when try connect using proxy settings commercial product company purchased, not able connect , getting timeout error.

entraderurl<-"https://ngcsi.contigohosting.com/entrader_dev/wcfservices/tradingservice.svc"

auth<-get(entraderurl,authenticate("username","password"),timeout(60))

error in curl::curl_fetch_memory(url, handle = handle) : timeout reached

when try same using non-corporate network , remove above proxy settings, able connect entrader.

auth<-get(entraderurl,authenticate("username","password"),timeout(60))

auth$status_code

[1] 200

i using windows 7 laptop , r studio version 1.0.136 , r version 3.3.3.

i not sure missing here. appreciated.

let's include line well

sys.setenv(https_proxy="http://aproxy.xxxxx.xx.xxxxxxx.net:8083") 

hope helps!