A .request and response
1. The client sends a request to each server creates a separate thread for each request
2. .request and response objects are created by the server, the client browser to create non
3. The data request is sent by the client to the server a request object packaged, and thus can be used to create a response object browser responds
4.request and response are corresponding to the contents of response created in response to the corresponding request in the data, and does not respond to other treatment request
II. Simple process between the client and the server
