CN103023987A - Multiplexing method based on transmission control protocol (TCP) connection - Google Patents

Multiplexing method based on transmission control protocol (TCP) connection Download PDF

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Publication number
CN103023987A
CN103023987A CN2012104913895A CN201210491389A CN103023987A CN 103023987 A CN103023987 A CN 103023987A CN 2012104913895 A CN2012104913895 A CN 2012104913895A CN 201210491389 A CN201210491389 A CN 201210491389A CN 103023987 A CN103023987 A CN 103023987A
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Prior art keywords
server
client
tcp
message
socket
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Pending
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CN2012104913895A
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Chinese (zh)
Inventor
柯宗贵
柯宗庆
杨育斌
梁大海
汪志军
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Bluedon Information Security Technologies Co Ltd
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Bluedon Information Security Technologies Co Ltd
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Priority to CN2012104913895A priority Critical patent/CN103023987A/en
Publication of CN103023987A publication Critical patent/CN103023987A/en
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Abstract

The invention discloses a multiplexing method based on transmission control protocol (TCP) connection. The method is implemented by multiplexing a channel between a proxy server and a server through a plurality of clients. A Client tries to communicate with the server, a SOCKET connecting request is required to be established between the Client and the proxy server, a TCP connection pool management program is installed in the proxy server, a unique ID is distributed to the Client after the connection request is legal, the ID and the SOCKET are used as a key value pair and stored in a forwarding table, the communication request of the Client is agreed, the distributed ID is carried back, and equivalently, a virtual channel for bidirectional communication is established between the Client and the Server. By the method, the frequency of creating and destroying the SOCKET in the server is reduced, and the resources of the server are saved. Meanwhile, multiplexing is realized by establishing the virtual channel between the server and numerous clients.

Description

A kind of multiplexed method that connects based on TCP
Technical field
The present invention relates to communication technical field, relate in particular to a kind of multiplexed method that connects based on TCP.
Background technology
Along with popularizing of fire compartment wall, the departments such as government, enterprise more and more pay attention to the safety of Intranet, and Adopts measure is also more and more stricter.In order to strengthen the fail safe of Intranet, fire compartment wall is often externally only opened individual port, only allows individual networks to connect and interior Network Communication.In this case, if attempt to connect the server of Intranet, can be refused by fire compartment wall.Therefore need to seek a kind of can either satisfy with interior network server between communicate by letter, can guarantee again the method for the fail safe of Intranet.
Application number is that the application for a patent for invention of CN201210197788.0 discloses and at least one valid data can have been connected the method for distributing at least one multiplexed connection.The method relates to multiplexed between two network elements, wherein produced the first signaling message and be transferred to the second network element by the first network element, the signaling message of the first network element is in order to show to the second network element: the first network element is being prepared to transmit at least one valid data via multiplexed connection and is being connected.Next, whether support to utilize multiplexed connection according to the second network element, if support, the second network element connects at least one valid data the multiplexed connection of distributing between the first network element and the second network element, if do not support, the second network element can be selected this other connections outside multiplexed.
The method can not be carried out multiplexed to the TCP connection.Its multiplexed unit is between the network element, does not possess wide usability.Whether support between the network element that multiplexed connection is not subjected to manual control, can not manage multiplexed that therefore, operability and flexibility are not high.
The patent No. is that the patent of invention of CN200310112006.X discloses a kind of multiplexed method of attachment that can realize vpn tunneling, and is multiplexing by setting up the reusable bandwidth and circuit backs up to realize between 2 o'clock.The node that carries out line sharing at needs connects public network by many physical circuits, then at the automatic or manual vpn tunneling that on every circuit, all is established to peer node of each node, needs are delivered to the packet of opposite end, according to certain dispatching algorithm, be sent to all vpn tunnelings corresponding to peer node, thereby realize line sharing.According to the VPN agreement data that peer node receives vpn tunneling are processed, after vpn tunneling is set up, each node checks the connection status of physical circuit, if interrupt, its data all switch to remaining to the active line of opposite end, after circuit recovers, again set up vpn tunneling with peer node at the circuit that recovers, and partial data is switched according to dispatching algorithm.
Present technique is only applicable to do not possess the property of being widely used in the point to point network interconnected systemss such as vpn system, expert system at present.Make up the vpn tunneling of this line sharing, require to connect public network by many physical circuits at the node that needs line sharing; And need automatically or manually on every circuit, all be established to the vpn tunneling of peer node at each node.In addition, the management difficulty of this technical scheme is larger, can not directly manage in application layer.
Summary of the invention
The objective of the invention is in order to overcome the defective of prior art, a kind of multiplexed method that connects based on TCP is provided, save server resource by the method, realize multiplexed.
The objective of the invention is to manage by in application layer TCP being connected, reach the realization that TCP connects multiplexed method.The method, is specially so that a plurality of client is multiplexing carries out two-way communication and realize by set up a tunnel between acting server and server:
The first step, Client attempts and server communication, needs elder generation and acting server (Proxy Server) to set up the SOCKET connection request;
After second step, acting server are received the connection request that Client sends, whether legal according to the request of this Client of rule judgment; If legal, acting server takes out TCP and connects and distribute to this Client from the TCP connection pool, and is unique ID of its distribution, then will connect the SOCKET value of this TCP and ID and deposit in as key-value pair and transmit;
The 3rd step, the communication request of replying this Client, if legal answers YES, and beaming back for the ID of its distribution is subsidiary, otherwise answer NO;
The 4th step if the connection request of Client obtains allowing, then was equivalent to set up a tunnel between Client and the Server, carried out two-way communication.
Multiplex communication process between Client and the Server is:
When S1, Client and Server communicate, acting server is attached in message for the ID of its distribution, expressly form be " ..., ID=XXXX ... "
S2, acting server receive form be " ..., ID=XXXX ... " message, whether checking ID is transmitted in inquiry consistent with SOCKET, if unanimously then message is transmitted to server;
S3, server are processed the message of receiving, equally ID are write in the message during answer;
S4, acting server carry out preliminary treatment to the message that the server of receiving sends, and parse id field, then inquire about transmitting, and find out the SOCKET of corresponding Client;
S5, acting server finally send to Client with message, and so far, the two-way communication between Client and the Server finishes.
The beneficial effect that technical solution of the present invention is brought: technical solution of the present invention can effectively alleviate the load of server, reduces the number of times that SOCKET creates and destroys on the server, has saved server resource.In actual applications; by setting up tunnel; can reach the purpose of walking around fire compartment wall; acting server is placed the position of the legal port of fire compartment wall; safeguard the TCP passage with protected server; by acting server the legitimacy of client is identified, set up tunnel between server and the numerous client, realize multiplexed.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the multiplexed schematic diagram that connects based on TCP of the present invention;
Fig. 2 is the multiplexed process schematic diagram that connects of the present invention;
Fig. 3 is the workflow diagram that acting server of the present invention is accepted connection;
Fig. 4 is multiplex communication schematic diagram of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The multiplexed schematic diagram that connects based on TCP as shown in Figure 1.Passage between acting server and the server is multiplexing by a plurality of clients, and the acting server end is installed TCP connection pool management program.It provides Rapid Establishment and the deletion action that TCP is connected, and can reduce resource and time loss that TCP creates and discharges, improves the performance of acting server.The below describes from this two aspect.
1, connects
In acting server when operation,, creating in batches in the TCP connection pool has some TCP to connect, when acting on behalf of server and need to set up TCP and connect, from the TCP connection pool, take out one and get final product, and do not need to rebulid with client between TCP be connected.Connection manages connection pool management mechanism to the TCP in the pond, when available TCP connects when few, connection pool management mechanism can apply for that more the multiple TCP connections supply is called, the physical connection time of TCP and authentication process process in logic can be effectively saved like this, the consumption of system resource can be effectively saved.
2, deletion connects
When needs disconnect certain TCP connection, utilize connection pool that TCP is connected with administrative mechanism, the TCP connection is reentered into connection pool, saved the time that discharges and be connected connection, if when really needing to delete corresponding TCP connection, the administrative mechanism of recycling connection pool discharges and clears up connection.Two kinds of ways like this can reduce resource consumption as far as possible, further improve performance.
Acting server utilizes the characteristics of Adelson-Velskii-Landis tree, provides transmitting the operations such as efficient insertion, inquiry, deletion, and the efficiency of algorithm after the optimization is higher, and time complexity can reach below the log (n).
Transmit the similar C++ container of data structure map, ID and SOCKET key-value pair are stored, the ID value increases progressively, and is key, and SOCKET is value, and time complexity is lower than map, and the operation that provides is provided insertion, inquiry and deletion.
The multiplexed process schematic diagram that connects as shown in Figure 2.
(1) Client attempts and server communication, needs elder generation and acting server (Proxy Server) to set up the SOCKET connection request;
(2) after acting server is received the connection request that Client sends, whether legal according to the request of this Client of rule judgment.If legal, acting server takes out a TCP connection and distributes to this Client from the TCP connection pool, and is that it distributes a unique ID.Then will connect the SOCKET value of this TCP and ID deposits in as key-value pair and transmits.
(3) reply the communication request of this Client, if legal answer YES, and beaming back for the ID of its distribution is subsidiary, otherwise reply NO.
(4) if the connection request of Client obtains allowing, then be equivalent to set up between Client and the Server tunnel, can carry out two-way communication.
Wherein, step (3) be connected 4) workflow diagram that accept to connect for acting server, as shown in Figure 3.
After setting up tunnel between Client and the Server, carry out two-way communication, acting server is as the agency who communicates by letter between them.Its multiplex communication process is illustrated in fig. 4 shown below.
When 1, Client and Server communicate, acting server is attached in message for the ID of its distribution, expressly form be " ...,, ID=XXXX ... "
2, acting server receive form be " ..., ID=XXXX ... " message, whether checking ID is transmitted in inquiry consistent with SOCKET, if unanimously then message is transmitted to server.
3, server is processed the message of receiving, equally ID is write in the message during answer.
4, acting server carries out preliminary treatment to the message that the server of receiving sends, and parses id field, then inquires about transmitting, and finds out the SOCKET of corresponding Client.
5, acting server finally sends to Client with message, and so far, the two-way communication between Client and the Server finishes.
In the technical solution of the present invention, for the multiplexed process of setting up, acting server can create a TCP and connect for the TCP connection request that each client is initiated, disconnect this connection behind the sign off.But acting server is ceaselessly created and be connected TCP and connect consumption of natural resource.
Process for multiplex communication, by client id field information is added in the message, acting server is transmitted and is got final product, and when server sends message to client, acting server is carried out and is searched action, utilize the value of ID to search the SOCKET that transmits middle correspondence, be transmitted to again corresponding client.Acting server also can be accepted the client original message, utilizes SOCKET to search to transmit the ID of middle correspondence, and id field is added to message, then is transmitted to server.When receiving server message, need to carry out once to search algorithm like this, efficient can reduce again.
Technical solution of the present invention can effectively alleviate the load of server, reduces the number of times that SOCKET creates and destroys on the server, has saved server resource.In actual applications; by setting up tunnel; can reach the purpose of walking around fire compartment wall; acting server is placed the position of the legal port of fire compartment wall; safeguard the TCP passage with protected server; by acting server the legitimacy of client is identified, set up tunnel between server and the numerous client, realize multiplexed.
More than a kind of multiplexed method that connects based on TCP that the embodiment of the invention is provided be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims (7)

1. a multiplexed method that connects based on TCP is characterized in that, the method is realized by a plurality of clients are multiplexing by set up tunnel between acting server and server, is specially:
The first step, Client attempts and server communication, needs elder generation and acting server (Proxy Server) to set up the SOCKET connection request;
After second step, acting server are received the connection request that Client sends, whether legal according to the request of this Client of rule judgment; If legal, acting server takes out TCP and connects and distribute to this Client from the TCP connection pool, and is unique ID of its distribution, then will connect the SOCKET value of this TCP and ID and deposit in as key-value pair and transmit;
The 3rd step, the communication request of replying this Client, if legal answers YES, and beaming back for the ID of its distribution is subsidiary, otherwise answer NO;
The 4th step if the connection request of Client obtains allowing, then was equivalent to set up a tunnel between Client and the Server, carried out two-way communication.
2. method according to claim 1, it is characterized in that the acting server end is installed TCP connection pool management program, and Rapid Establishment and deletion action that TCP is connected are provided, can reduce resource and time loss that TCP creates and discharges, improve the performance of acting server.
3. method according to claim 1 is characterized in that, the operation that provides is provided insertion, inquiry and deletion.
4. method according to claim 1 is characterized in that, transmits ID and SOCKET key-value pair are stored, and the ID value increases progressively, and is key, and SOCKET is value, and time complexity is lower than map.
5. method according to claim 1 is characterized in that, the multiplex communication process between Client and the Server is:
When S1, Client and Server communicate, acting server is attached in message for the ID of its distribution, expressly form be " ..., ID=XXXX ... "
S2, acting server receive form be " ..., ID=XXXX ... " message, whether checking ID is transmitted in inquiry consistent with SOCKET, if unanimously then message is transmitted to server;
S3, server are processed the message of receiving, equally ID are write in the message during answer;
S4, acting server carry out preliminary treatment to the message that the server of receiving sends, and parse id field, then inquire about transmitting, and find out the SOCKET of corresponding Client;
S5, acting server finally send to Client with message, and so far, the two-way communication between Client and the Server finishes.
6. method according to claim 5, it is characterized in that, the process of multiplex communication, can also id field information be added in the message by client, acting server is transmitted and is got final product, and when server sent message to client, acting server was carried out and searched action, utilize the value of ID to search the SOCKET that transmits middle correspondence, be transmitted to again corresponding client.
7. method according to claim 5 is characterized in that, in the process of multiplex communication, acting server also can be accepted the client original message, utilizes SOCKET to search to transmit the ID of middle correspondence, and id field is added to message, then is transmitted to server.
CN2012104913895A 2012-11-27 2012-11-27 Multiplexing method based on transmission control protocol (TCP) connection Pending CN103023987A (en)

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Cited By (22)

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CN104065656A (en) * 2014-06-24 2014-09-24 浙江宇视科技有限公司 Media stream data identification method
CN104954158A (en) * 2014-03-27 2015-09-30 深圳市金蝶友商电子商务服务有限公司 Connection management method and connection pool control equipment
CN105471869A (en) * 2015-11-23 2016-04-06 珠海全志科技股份有限公司 Internet television content request connection reuse method and system thereof
CN105743812A (en) * 2014-12-26 2016-07-06 英特尔公司 Multiplexing many client streams over a single connection
CN105939344A (en) * 2016-04-18 2016-09-14 杭州迪普科技有限公司 TCP (Transmission Control Protocol) connection establishing method and device
CN106027641A (en) * 2016-05-19 2016-10-12 上海斐讯数据通信技术有限公司 TCP (Transmission Control Protocol) connection multiplexing method based on SDN (Software Defined Network)
CN106302572A (en) * 2015-05-15 2017-01-04 Tcl集团股份有限公司 A kind of multichannel communication method between server and system thereof
CN106657076A (en) * 2016-12-26 2017-05-10 北京神州绿盟信息安全科技股份有限公司 TCP service implementation method and device of network namespace
CN106686091A (en) * 2016-12-30 2017-05-17 广州尚融网络科技有限公司 Virtual channel control method and system
CN106878304A (en) * 2017-02-15 2017-06-20 国网天津市电力公司 A kind of method of the link multiplexing of distributed agent
CN106921656A (en) * 2017-02-09 2017-07-04 浙江风向标科技有限公司 Multiplex the method and device of transmitting message
CN107872538A (en) * 2017-12-07 2018-04-03 浙江大华技术股份有限公司 Decouple method for processing business, reverse proxy and the service server of TCP length connections
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CN105323183B (en) * 2014-08-01 2019-05-10 中国电信股份有限公司 Data transmission processing method and system between network server
CN109962962A (en) * 2017-12-26 2019-07-02 航天信息股份有限公司 A kind of method and apparatus of socket connection
CN111083102A (en) * 2019-10-23 2020-04-28 全球能源互联网研究院有限公司 Internet of things data processing method, device and equipment
CN112953823A (en) * 2021-01-29 2021-06-11 广州安凯微电子股份有限公司 Virtual circuit networking method
CN113014512A (en) * 2021-03-14 2021-06-22 白杨 Network connection accelerated forwarding technology based on N: M connection dynamic mapping
CN113452624A (en) * 2021-04-07 2021-09-28 苏州瑞立思科技有限公司 Dynamically switchable multi-channel routing system and application method thereof
CN114520836A (en) * 2022-01-12 2022-05-20 深圳市微创云启科技有限公司 Network communication protocol method and system capable of multiplexing and preventing data tampering
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CN105743812A (en) * 2014-12-26 2016-07-06 英特尔公司 Multiplexing many client streams over a single connection
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Application publication date: 20130403