Extended header information extraction method based on open source protocol stack eXosip

The invention provides an extended header information extraction method based on an open source protocol stack eXosip, and the method comprises the steps: recognizing an event processing task received by a client terminal, and obtaining, classifying and storing an event processing function contained in the event processing task; analyzing the event processing function by using a grammar analyzer, storing analysis results to an open source protocol stack eXosip, and performing numeralization marking on each analysis result to obtain extension header information; identifying an online session request from a client terminal to obtain client terminal identity information, calling matched extension header information from an open source protocol stack eXosip, constructing an online session group, and displaying a client terminal event task processing process related to the called extension header information in the online session group at the same time; therefore, a proper event processing function can be called f