PROTOCOL STACK SYSTEM FOR SIMPLE MAIL TRANSFER PROTOCOL (SMTP) AND IMPLEMENTATION METHOD THEREOF

摘要

The present invention provides a protocol stack system for simple mail transfer protocol (SMTP) and the implementation method thereof. The protocol stack system connects between a value-added service module and a mail server, and includes a communication module, a message processing module and a link management module. The communication module receives a request message for sending a mail from the value-added service module and receives, from the mail server, a request message for sending a mail to the value-added service provider from a user mailbox. The message processing module packs the mail transmission request message issued by the value-added service module to convert an internal message to an SMTP protocol message and unpacks the uplink mail request message from the mail server to unpack the SMTP protocol message into the internal message. The link management module is responsible for establishing and deleting links and implements the management for link allocation, link heartbeat and failure. The present invention can reduce the complexity for up-layer value-added service development and ensure the response speed of the up-layer value-added service development.