Authentication headers using Rest Client Ruby Gem

Josh picture Josh · Jan 2, 2014 · Viewed 25.8k times · Source

I have already created a basic authentication key, now I am just trying to utilize it. I have tried a few different variations, but none seem to show Authorization in the request headers.

$auth = 'Basic cmFtZXNoQHVzYW1hLmNvbTpyYW1lc2h1JEBtcA=='


@response = resource.post('Authorization' => $auth)
nor
@response = resource.post(:authorization => $auth)
nor
@response = resource.post(:Authorization => $auth)
nor
@response = resource.post(:content_type => :json, :accept => :json, :headers => { 'Authorization:' => $auth })

Unfortunately I am not finding a lot of info in the rdoc that can help me solve this. Does anyone have experience adding auth headers using the Rest Client gem?

Answer

Neil Slater picture Neil Slater · Jan 2, 2014

For Basic Auth, you should be able to set the user and password in plaintext when you create the resource:

resource = RestClient::Resource.new( 'http://example.com', 'user', 'password' )

But if you really need to set the header directly per request:

@response = resource.post( request_payload, :Authorization => $auth )

should work. If it does not, then you may have set $auth incorrectly. However, I think you just missed adding the request payload, so it was using the hash you supplied for that required param, and not setting any headers at all.

Here's a complete and working example using get (I don't have a test service available with Basic Auth and POST)

require 'rest-client'
require 'base64'
$auth = 'Basic ' + Base64.encode64( 'user:passwd' ).chomp
$url = 'http://httpbin.org/basic-auth/user/passwd'

@resource = RestClient::Resource.new( $url )
@response = @resource.get( :Authorization => $auth )
# => "{\n  \"authenticated\": true,\n  \"user\": \"user\"\n}"

Note: Though this works, I recommend you use the first and simplest method of supplying user and password to the constructor unless you have good reason not to.