Data transmission method and data transmission device

Abstract

The invention belongs to the technical field of communication and electronics, and discloses a data transmission method and a data transmission system. The data transmission method comprises the steps of: sequentially numbering to-be-transmitted small files; assembling the numbered to-be-transmitted small files according to a preset protocol format; sending the files, which are generated after assembly, via a data transmission channel; and according to received confirmation information, obtaining numbers of unreceived small files, and sending the unreceived small files again via the data transmission channel. According to the data transmission method and the data transmission device disclosed by the invention, through numbering the to-be-transmitted small files, sending to a receiver device after assembling according to the preset protocol format, and splitting the received files according to the preset protocol format into the small files by the receiver device, the problem of frequently establishing connections in file transmission process in the prior art is solved; and meanwhile, the small files are transmitted in a dynamic splicing manner after being numbered sequentially, so the problems of a single channel in a network unstable environment are solved.

Description

technical field [0001] The invention belongs to the technical fields of communication and electronics, and in particular relates to a data transmission method and a data transmission device. Background technique [0002] At present, small files are more and more common in practical applications, and files with a size of less than 1MB are usually called small files. For example, in the cloud photo album service, millions of pictures are uploaded to the storage server every day. The thumbnails generated by these pictures are all small files at the KB level. Set the same application or database, play the role of taking over immediately after the disaster) and the problem of users' nearby access, it is necessary to synchronize millions of small files to the storage nodes in various regions every day. [0003] The solution in the prior art is to carry out synchronous transmission of small files one by one, and the transmission is through the TCP protocol. A new TCP (Transmission...

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Problems solved by technology

[0005] The embodiment of the present invention provides a data transmission method and a data transmission device, aiming at solving the problem of merging small files into one large file in the prior art and then performing synchronization, but once the synchronization of the large file fails, the entire large file needs to be re-synchronized question

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