use Basic auth header for client authentication
use Basic auth header for client authentication

hmuronaka/openid_connect_sample_rp,hmuronaka/openid_connect_sample_rp,nov/openid_connect_sample_rp,nov/openid_connect_sample_rp,nov/openid_connect_sample_rp,gbirchmeier/openid_connect_sample_rp,gbirchmeier/openid_connect_sample_rp,gbirchmeier/openid_connect_sample_rp,hmuronaka/openid_connect_sample_rp