HTTP-BASED SYNCHRONIZATION METHOD AND APPARATUS

摘要

An HTTP-based synchronization method includes obtaining a first response sent by a source server or a cache in response to an HTTP request for obtaining a file; determining a time when the first response is sent in local time at the source server, according to a value of a Date field and a value of an Age field in the first response; determining a time when the first response is sent in local time at a client, according to the client time of an event related to the first response; and determining a time offset between the source server time and the client time according to: the time when the first response is sent in local time at the source server and the time when the first response is sent in local time at the client, and setting up a synchronization relationship between the client time and the source server time.

主权项

1. A hypertext transport protocol (HTTP)-based synchronization method comprising:
obtaining by a client, a first response from a source server or a cache in response to an HTTP request to obtain a file; determining by the client, a first time reading when the first response is sent in a local time of the source server according to a value of a date field and a value of an age field defined in the first response; determining by the client, a second time reading when the first response is sent in a local time of the client according to a client time of an event related to the first response; determining by the client, a first time offset between the source server time and the client time according to one or both of: the first time reading when the first response is sent in the local time of the source server and the second time reading when the first response is sent in the local time of the client; and setting up by the client, a first synchronization relationship between the client time and the source server time.