Multilink safety communication method based on completion port model

Abstract

The invention provides a method for supporting multilink concurrence safety communication between a server and multiple clients and relates to a multilink safety communication method based on a completion port model. The method includes that a main worker thread at a communication server is embedded into an application service of a Windows system to run, a transmission control protocol (TCP) communication server is built according to the completion port model, meanwhile a fixed number of communication interface threads are built to conduct communication with the clients in an asynchronous mode, and the parallel processing capability of the server is improved. In an interaction process, after any client builds the TCP connection, two communication parties must adopt a handshake mechanism to ensure connection legality and adopt connection pool queues or local variables to dynamically maintain message serial numbers in the following data receiving and transmitting process, data transmitted by any party on the legal connection are packaged again according to the data package structure definition, and the receiving party adopts a safety verification algorithm to verify the data packages and regroup the plurality of data packages according to the precedence order of the message serial numbers.

Description

technical field [0001] The invention relates to the field of real-time communication in a local area network environment, and is a method for supporting multi-link concurrent secure communication between a server and multiple clients. Background technique [0002] In the network environment, the C / S model provides a convenient way for users, so that each client distributed in different locations breaks through the geographical restrictions, and centrally shares the resources of the server in the way of "request-response-return". At present, this model has been selected by most commercial applications, and is widely involved in various industries. Its core technology, TCP / IP protocol, provides reliable organizational structure support for the communication between the client and the server. [0003] On the other hand, in practical applications, the number of servers is often limited, usually one or more than a dozen, and the number of clients communicating with them may be hu...

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Problems solved by technology

[0003] On the other hand, in practical applications, the number of servers is often limited, usually one or more than a dozen, and the number of clients communicating with them may be hundreds of times or even massive. When several clients need to communicate with When the server performs instant messaging, if the method of dynamically creating threads to process event requests in sequence is used, the server’s response will be delayed due to limited CPU resources and excessively frequent thread scheduling, and data sending and receiving timeout errors will occur, which will eventually lead to TCP connection failures. to interrupt

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