Session Initiation Protocol (SIP) is a signaling protocol that is used to set up, modify, and terminate a session between two endpoints. SIP can be used to set up a two-party call, a multi-party call, ...
Despite the elegance of the Servlet API, real-world servlet classes tend to have pages of code in their doGet() and doPost() methods, often with complex conditional logic. Over time, more code must be ...