Token Expired

During long polling, subsequent requests may fail due to token expiration. In this case, design the retry logic as follows:

Re-initiate the two interfaces in Sign-In Authentication, update the values of Authorization and ccmessaging-token in the common header field, and initiate the request again.

When a click-to-dial request times out, the value of httpStatus of the interface for requesting the click-to-dial service is 403.