The embodiment of the invention provides a scheduling method. The scheduling method comprises the following steps that: a scheduling server converts at least a part of access requests from a client into a UDP (User Datagram Protocol) request packet; the scheduling server sends the UDP request packet to a source server repeatedly; and the scheduling server receives an index file packet returned by the source server, and transmits index files in the index file packet to the client. The embodiment of the invention further provides corresponding equipment, a scheduling response method and equipment, and a system. Compared with the prior art in which a three-way handshake process needs to be pre-established to perform data transmission in each use of a TCP (Transmission Control Protocol), the scheduling method, device and system and the scheduling response method and equipment have the advantages that the packet loss rate is not increased remarkably; the interaction speed among servers is increased; and the access time of a user is shortened.