1. A method of transferring context information from a message to a web server containing a context pool, the method comprising: receiving a message by the web server; obtaining context information from said message; generating a unique identifier according to a thread for processing the message; associating the context information with the generated unique identifier; storing the context information and the associated unique identifier in the context pool of the web server correlatively; generating an identifier according to a thread that is executed currently in the web server if the web server is required to obtain the context information; and extracting the context information for which the associated unique identifier is matched with the generated identifier from the context pool.