Proxy server and data message processing method thereof

Abstract

The invention provides a data message processing method by a proxy server, which comprises the following steps that: the proxy server receives a first request message through a network card driver andprovides a user space for the proxy server; the user space analyzes the first request message through a user mode network protocol stack to obtain first request data, and provides the first request data to an agent process of the user space; the agent process generates second request data according to an agent strategy and sends the second request data to the user mode network protocol stack; andthe user mode network protocol stack encapsulates the second request data to obtain a second request message, and sends the second request message to a network card driver of a proxy server. According to the proxy server and the data message processing method thereof provided by the invention, the performance of the proxy server can be improved.

Description

technical field [0001] The invention relates to the technical field of the Internet, in particular to a proxy server and a method for processing data packets. Background technique [0002] Proxy servers are widely used in the Internet, and are mainly set between personal networks and Internet service providers to act as agents for clients to obtain network information. Most of the existing proxy servers run on the Linux operating system, and process and send and receive data packets through the kernel. figure 1 Shown is a schematic diagram of processing data packets by an existing proxy server. The network card sends the received data message to the network protocol stack in the kernel space for processing, and then copies the processed data message to the proxy process of the user space through the kernel context switch. The message is copied to the kernel, processed by the network protocol stack in the kernel space, and then sent to the network card. [0003] The invent...

AI Technical Summary

Problems solved by technology

[0003] The inventor of this patent application found by studying the existing data message processing process that the prior art has at least the following problems: first, it is more complicated to process data messages through the network protocol stack of the kernel, and the Netfilter module of the kernel processes data messages The efficiency of the text is low, and the data needs to be copied and switched between the kernel and the user space multiple times in the whole process, which not only makes compiling and debugging cumbersome, but also reduces the efficiency of data processing; secondly, the kernel uses interrupt When the concurrent data is large, it is easy to have very high soft interrupts and occupy system resources, which will become the performance bottleneck of the system; finally, in order to prevent resource preemption, the network protocol stack of the kernel needs to Lock the Process Control Block (PCB), which also affects the processing efficiency of data packets

[0004] It can be seen that the above reasons may lead to a decrease in the performance of the proxy server.

Images