A cURL example to create an OAuth 1.0 request token for the XING API

xing_create_request_token.sh

CONSUMER_KEY="YOUR_CONSUMER_KEY"
CONSUMER_SECRET="YOUR_CONSUMER_SECRET"

curl --request POST --verbose              \                  
 "https://api.xing.com/v1/request_token"   \
 -d "oauth_callback=oob"                   \
 -d "oauth_version=1.0"                    \
 -d "oauth_signature_method=PLAINTEXT"     \
 -d "oauth_consumer_key=$CONSUMER_KEY"     \
 -d "oauth_signature=$CONSUMER_SECRET%26"