Data retransmission method and device

Abstract

The invention provides a data retransmission method and device, and the method comprises the steps: receiving a data package when the data package is transmitted, and obtaining data package information of the data package; identifying a link to which the data packet belongs according to the data packet information; determining whether the link is in a retransmission state; discarding the data packet information under the condition that the link is in a retransmission state; when the link is not in the retransmission state, calculating a storage address according to the link and the data packetinformation; and storing the data packet information in the storage address. According to the scheme, information of the sent data packet is recorded to serve as a retransmission basis, so that effective retransmission control is achieved, and the purpose of efficient data retransmission is achieved.

Description

technical field

[0001] The invention relates to the field of computer technology, in particular to a data retransmission method and device. Background technique

[0002] TCP / IP protocol is the most basic and widely used transmission protocol in general network communication technology. In the existing network environment, most of the implementation methods for the TCP / IP protocol are to use special network control software to process data and network information through the CPU to generate TCP packets, IP packets, Ethernet packets, and control the sending and receiving of data packets according to the network status and needs. Only some high-end network adapters support the processing functions of a small part of data, such as: the calculation and verification of TCP checksums are offloaded, and the effect is very limited. In the context of the rapid development of network communication technology and the increasingly high requirements of the society for the quality of netw...

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