Camel HTTP authentication fails but call works with curl

Camel HTTP authentication fails but call works with curl

I'm constructing a Camel route that will make calls to Twilio's SMS API to
send SMSs. However, it is failing with a 401 authentication error. I've
copied my config from this worked example and validated that my
credentials are sound by curl-ing the call. However, I can't work out what
I'm missing on the Camel side.
My Camel HTTP integration with APIs that don't enforce authentication all
work fine and the URL for the Twilio call is being fed correctly (using
the header *Exchange.HTTP_QUERY*).
Any help much appreciated. Thanks.
Here's my Blueprint-OSGi Camel route:-
<camelContext id="jellyfish-messaging-sms" errorHandlerRef="deadLetterQueue"
trace="false" xmlns="http://camel.apache.org/schema/blueprint">
<route id="sms.twilio">
<from uri="activemq:sms.twilio" />
<setHeader headerName="Content-Type">
<constant>application/x-www-form-urlencoded</constant>
</setHeader>
<setHeader headerName="CamelHttpMethod">
<constant>POST</constant>
</setHeader>
<to
uri="https://api.twilio.com/2010-04-01/Accounts/{{sms.accountSid}}/SMS/Messages"
/>
</route>
</camelContext>
<!-- BEANS -->
<bean id="httpAuth"
class="org.apache.camel.component.http.HttpConfiguration">
<property name="authMethod" value="Basic"/>
<property name="authUsername" value="${sms.accountSid}"/>
<property name="authPassword" value="${sms.authToken}"/>
</bean>
<bean id="http" class="org.apache.camel.component.http.HttpComponent">
<property name="camelContext" ref="jellyfish-messaging-sms"/>
<property name="httpConfiguration" ref="httpAuth"/>
</bean>
Here's the exception (from karaf.log):-
2013-09-09 17:37:27,627 | INFO | umer[sms.twilio] | HttpMethodDirector
| 366 - org.apache.servicemix.bundles.commons-httpclient -
3.1.0.7 | No credentials available for BASIC 'Twilio
API'@api.twilio.com:443
2013-09-09 17:37:27,632 | ERROR | umer[sms.twilio] | jellyfish-messaging
| 266 - org.apache.camel.camel-core - 2.10.2 | Dead letter
interceptor invoked
2013-09-09 17:37:27,635 | ERROR | umer[sms.twilio] | sms
| 266 - org.apache.camel.camel-core - 2.10.2 |
Exchange[ExchangePattern:InOnly, BodyType:String, Body:Nothing to see
here,
CaughtExceptionType:org.apache.camel.component.http.HttpOperationFailedException,
CaughtExceptionMessage:HTTP operation failed invoking
https://api.twilio.com/2010-04-01/Accounts/...snip.../SMS/Messages?From=%2B44...snip...&To=%2B44...snip...&Body=fred
with statusCode: 401,
StackTrace:org.apache.camel.component.http.HttpOperationFailedException:
HTTP operation failed invoking
https://api.twilio.com/2010-04-01/Accounts/...snip.../SMS/Messages?From=%2B44...snip...&To=%2B44...snip...&Body=fred
with statusCode: 401 at
org.apache.camel.component.http.HttpProducer.populateHttpOperationFailedException(HttpProducer.java:229)
at
org.apache.camel.component.http.HttpProducer.process(HttpProducer.java:157)
And here's the working curl:-
curl -X POST
https://api.twilio.com/2010-04-01/Accounts/...snip.../SMS/Messages -u
...snip...:...snip... -d "From=+44...snip..." -d "To=+44...snip..." -d
'Body=Hello'