Hi,

1. Regarding requests to Refinitiv platform, there is one incorrect usage in your scripts (both python and R): http request should be sent to https://api.refinitiv.com/... (and not to https://api.refinitiv.com:443/... ).
   443 port number is usually dedicated for websocket connection with a streaming server.
   
   You can familiarize yourself on https://apidocs.refinitiv.com/ to check request format & response.
   That means you have to request token to https://api.refinitiv.com/auth/oauth2/v1/token
   
   
2. For the Validation error with R, the message "Missing required parameter 'grant_type'"
   That means your request didn't contain grant_type value.
   
   Ex: check if your request for access token to https://api.refinitiv.com/auth/oauth2/v1/token contains post data with grant_type set to "password"

{ 'scope': 'trapi', 'grant_type': 'password', 'username': 'xxxx', 'password': 'xxxxxxx', 'takeExclusiveSignOnControl': 'true', 'client_id': 'your_app_key' } 

@pierre.faurel Thank you for noticing point 1. Indeed there should not bee 443 in the link (found it here https://emea1.apps.cp.thomsonreuters.com/Apps/APIDocs/1.2019.3/#/details/L2F1dGgvb2F1dGgyL3Yx/L3Rva2Vu/POST/PLAYGROUND)

Regarding point 2. I change R code to

content = paste("grant_type=", "password","&username=", user, "&password=", "password", sep="") #content = paste("scope=","trapi","&grant_type=", "password","&username=", user, "&password=", password,"takeExclusiveSignOnControl=true","&app_id=",app_id,   sep="") h <- new_handle(copypostfields = content) handle_setheaders(h, "Content-Type" = "application/x-www-form-urlencoded") handle_setopt(h, ssl_verifypeer = FALSE, ssl_verifyhost = FALSE) auth_url = paste("https://", auth_hostname, sep="")# ":", auth_port, "/getToken", sep="") This part i did not include (even if include, the same output) also see output below under *** this command always caused if fully written req <- curl_fetch_memory(auth_url, handle = h) res_headers = parse_headers(req$headers) auth_json_string = rawToChar(req$content) auth_json = fromJSON(auth_json_string) cat("RECEIVED:\n") cat(toJSON(auth_json, pretty=TRUE, auto_unbox=TRUE))

So, I played around with CONTENT code having multiple versions, also set "grant_type=", "password" and "grant_type=", password (so, the same letters and numbers as my password) and the output is always the same

2.1) with "grant_type=", "password" in both versions of CONTENT the output is following :

> cat(toJSON(auth_json, pretty=TRUE, auto_unbox=TRUE)) {   "error": "invalid_request" }

2.2) with "grant_type=", password in both versions of CONTENT the output is following :

> cat(toJSON(auth_json, pretty=TRUE, auto_unbox=TRUE)) {   "error": "unsupported_grant_type" }

3) Additionally, the strange is that when using curl_fetch_memory it seems that handle=h is simply the same as auth_hostname, however I believe that handle should be with different input. Am I right?

> content = paste("grant_type=", "password","&username=", user, "&password=", password, sep="")
> h <- new_handle(copypostfields = content)
> h
<curl handle> (empty)
> handle_setheaders(h,
+   "Content-Type" = "application/x-www-form-urlencoded"
+ )
> handle_setopt(h, ssl_verifypeer = FALSE, ssl_verifyhost = FALSE)
> auth_url = paste("https://", auth_hostname, sep="")# ":", auth_port, "/getToken", sep="")
> auth_url
[1] "https://api.refinitiv.com/auth/oauth2/v1/token"
> req <- curl_fetch_memory(auth_url, handle = h)
> req
$url
[1] "https://api.refinitiv.com/auth/oauth2/v1/token"

$status_code
[1] 400

$type
[1] "application/json"

> h
<curl handle> (https://api.refinitiv.com/auth/oauth2/v1/token)

***

> auth_json = fromJSON(auth_json_string) Error: parse error: trailing garbage                                    404 page not found                      (right here) ------^