Specify authentication type

[MattP]

UPDATE: I think I can close this based on the fact I'm using a proxy here, and wasn't aware this got split out from httr to httr2 in this way: Use a proxy for a request — req_proxy • httr2

I think I can close as self-solved, but will wait a bit and see if anyone has any comments.

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This question has been asked in some other forms here, but not answered, specifically:

How do I specity authentication type in httr2?

In httr, I could specify the authentication type with the type argument to authenticate. authenticate(user, password, type = "basic") type type of HTTP authentication. Should be one of the following types supported by Curl: basic, digest, digest_ie, gssnegotiate, ntlm, any. It defaults to "basic", the most common type. How do I specify the type in httr2? I need to specify "ntlm", but there is no type argument to httr2::request, and there is a req_auth_basic() function, but no req_auth_ntlm.

NTLM authentication in httr2

Following up on an earlier question by @arthur.t - https://forum.posit.co/t/how-do-i-specity-authentication-type-in-httr2/140119 - I figured I should share what I worked out and see if anyone else has a more graceful solution. tldr: library(httr2) response <- request("https://www.example.com") |> req_options(httpauth = 8L) |> req_options(userpwd = ":") |> req_perform() response I need to do NTLM authentication while using httr2, which doesn't have the same range of easy authentication options as httr did. Turns out it's fairly easy but you need to get into the guts of curl to understand the numbers for options. You need to set the authentication option to CURLAUTH_NTLM .…

I want to use httr2 rather than httr now, but need to the equivalent of the following digest authentication in httr2. Please advise.

httr::POST("https://example.com", 
        httr::authenticate(my_user, my_password, 
            type = "digest"), httr::add_headers(my_headers), 
        body = my_request_body)

[vedoa]

Hi @MattP,

your links provide the answer.
Use the code snippet from NTLM authentication in httr2 - #2 by jsmfws
and set httpauth = 2L. For a listing of the methods from httr you can look at httr/R/authenticate.r at main · r-lib/httr · GitHub.

So keeping @jsmfws style it would be something like

req_auth_digest <- function(req) {
  httr2::check_request(req)
  httr2::req_options(req, httpauth = 2L, userpwd = "username:password")
}

[MattP]

Yep, thanks, reading more carefully that answer, I am seeing it now.

[MattP]

Fyi ... check_request() isn't exported from {httr2} with my version, but assume it is ok here to use :::

tryCatch({
    httr2::request("http://example.com") |>
        httr2::check_request()
},
error=function(e) print(glue::glue("{e}")))
#> Error: 'check_request' is not an exported object from 'namespace:httr2'

httr2::request("http://example.com") |>
    httr2:::check_request()

^{Created on 2024-04-19 with reprex v2.1.0}