CN101827020A - Method and system for speeding up built persistent connection without disconnection - Google Patents
Method and system for speeding up built persistent connection without disconnection Download PDFInfo
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- CN101827020A CN101827020A CN201010118353A CN201010118353A CN101827020A CN 101827020 A CN101827020 A CN 101827020A CN 201010118353 A CN201010118353 A CN 201010118353A CN 201010118353 A CN201010118353 A CN 201010118353A CN 101827020 A CN101827020 A CN 101827020A
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Abstract
The invention is applicable to the technical field of networks and provides a method and a system for speeding up built persistent connection without disconnection. The method comprises the following steps that: a client sends a data packet to a server; the server sends a response to the client; when tracing that the client and the server both send a data packet, a first wide area network optimizing device and a second wide area network optimizing device detect the series numbers of the data packets sent by the client and the server and establish sessions and build TCP connection according to the series numbers; when the connection is built, the client sends the data packet to the server again; the first wide area network optimizing device sends the response to the client; the first wide area network optimizing device processes the data packet and sends the data packet to the second wide area network optimizing device; and the second wide area network optimizing device receives and forwards the data packet to the server. The method and the system can perform a network optimizing treatment on the built connection after the device comes into operation, avoid breaking the client connection and facilitate the use of the client.
Description
Technical field
The invention belongs to networking technology area, relate in particular to a kind of long connection of having set up constantly driving the method and system that row quickens into.
Background technology
Current, the enterprise that adopts wide area network optimizing device to promote network efficiency gets more and more, in the middle of the technology that wan optimization is adopted, very basic a bit is exactly the protocol optimization technology, at this moment wide area network optimizing device is equivalent to an agency, real client is directly connected to the agency to service end, is exactly so-called " high speed TCP " or other the similar protocol optimization technology of setting up between two wide area network optimizing device what really carry out transfer of data on the wide area network at this moment.
Because what adopt is agent skill group, connect so all need the TCP three-way handshake process of standard, therefore only newly-built connection comes into force to client.But, in the application of reality, as network neighbor, IBM Lotus Notes system all is the long application that connects, in case therefore wide area network optimizing device temporarily lost efficacy, these connections just no longer connect by WAN equipment so, but directly set up being connected of client and real server, afterwards when wide area network optimizing device comes into force again, these connections of having set up no longer include the three-way handshake process of TCP, this moment, wide area network optimizing device just can't come into force to these connections so, and other acceleration means also can't be used.
Summary of the invention
The object of the present invention is to provide a kind of to long connection of having set up constantly driving the method that row quickens into, be intended to solve prior art when the client and server end is set up long the connection, when wide area network optimizing device comes into force again, can't be to the long problem of having set up that comes into force that connects.
The present invention is achieved in that a kind of to long connection of having set up constantly driving the method that row quickens into, and described method comprises the steps:
Client sends packet to server end;
After server end receives the packet of client transmission, send and reply ACK to client;
When first wide area network optimizing device and second wide area network optimizing device trace into after the client and server end all sent a packet, survey the sequence number of the packet that both sides send, and create session according to this sequence number, set up TCP and connect;
After the connection between first wide area network optimizing device and second wide area network optimizing device created, client sent packet to server end again;
After first wide area network optimizing device receives the packet of user end to server transmission, send and reply ACK to client;
First wide area network optimizing device is optimized processing to the packet that client sends to server end, and sends packet to the second wide area network optimizing device after the optimization process;
Second wide area network optimizing device receives and transmits the packet of user end to server transmission to server end;
Server end sends replys ACK to the second wide area network optimizing device.
Another object of the present invention is to provide a kind of to long connection of having set up constantly driving the system that row quickens into, first wide area network optimizing device that described system comprises client, be connected by network with described client, second wide area network optimizing device that is connected by network with described first wide area network optimizing device and the server end that is connected by network with described second wide area network optimizing device, described client comprises:
The first packet transmitting element is used for sending packet to server end;
First replys receiving element, is used for the ACK that replys of reception server end response;
The second packet transmitting element is used for sending packet to server end once more after first wide area network optimizing device and second wide area network optimizing device are set up TCP and be connected;
Second replys receiving element, is used to receive the ACK that replys of first wide area network optimizing device transmission;
Described server end comprises:
The first packet receiving element is used to receive the packet that client sends;
First replys transmitting element, is used for replying ACK to the client transmission;
The second packet receiving element is used to receive the packet after the optimization process that second wide area network optimizing device sends;
Second replys transmitting element, is used for replying ACK to the transmission of second wide area network optimizing device;
Described first wide area network optimizing device or second wide area network optimizing device comprise:
Connect and to set up the unit, be used for, survey the sequence number of the packet that both sides send, and create session, set up the TCP connection according to this sequence number when tracing into after the client and server end all sent a packet;
Reply transmitting element, be used for behind the packet that receives the transmission of user end to server end, sending and replying ACK to client;
Packet is optimized transmitting element, and the data that are used for client is sent to server end are optimized processing, and send the packet after the optimization process; And/or
Packet receives transmitting element, is used to receive and transmit described packet and optimizes packet after the optimization process that transmitting element sends to server end.
Another object of the present invention is to provide a kind of to long connection of having set up constantly driving the method that row quickens into, described method comprises the steps:
Send packet to server end;
The reception server end is responded replys ACK;
After first wide area network optimizing device and second wide area network optimizing device are set up TCP and be connected, send packet to server end once more;
Receive the ACK that replys of first wide area network optimizing device transmission.
Another object of the present invention is to provide a kind of client, described client comprises:
The first packet transmitting element is used for sending packet to server end;
First replys receiving element, is used for the ACK that replys of reception server end response;
The second packet transmitting element is used for sending packet to server end once more after first wide area network optimizing device and second wide area network optimizing device are set up TCP and be connected;
Second replys receiving element, is used to receive the ACK that replys of first wide area network optimizing device transmission.
Another object of the present invention is to provide a kind of to long connection of having set up constantly driving the method that row quickens into, described method comprises the steps:
Receive the packet that client sends;
Reply ACK to the client transmission;
Receive the packet after the optimization process that second wide area network optimizing device sends;
Reply ACK to the transmission of second wide area network optimizing device.
Another object of the present invention is to provide a kind of server end, described server end comprises:
The first packet receiving element is used to receive the packet that client sends;
First replys transmitting element, is used for replying ACK to the client transmission;
The second packet receiving element is used to receive the packet after the optimization process that second wide area network optimizing device sends;
Second replys transmitting element, is used for replying ACK to the transmission of second wide area network optimizing device.
In the present invention, when first wide area network optimizing device and second wide area network optimizing device trace into after the client and server end all sent a packet, survey the sequence number of the packet of both sides' transmission, and according to this sequence number establishment session, setting up TCP connects, when receiving client once more behind the packet that server end sends, transmission is replied ACK to client, then the packet that receives is optimized processing, and packet to the second wide area network optimizing device after the transmission optimization process, second wide area network optimizing device receives and transmits the packet of user end to server transmission to server end, server end sends replys ACK to the second wide area network optimizing device, like this, when first wide area network optimizing device and second wide area network optimizing device come into force, detect the sequence number that the client and server end connects, creating TCP by this sequence number then on first wide area network optimizing device and second wide area network optimizing device is connected, can satisfy equipment after putting on the shelf or coming into force, network optimization processing is accomplished in the connection of having set up before equally, avoid disconnecting the client and connect, make things convenient for the client to use.
Description of drawings
Fig. 1 is after the wide area network optimizing device that provides of the embodiment of the invention lost efficacy, the schematic diagram of the three-way handshake process that the TCP of client and server end connects;
Fig. 2 is after wide area network optimizing device that the embodiment of the invention provides comes into force, the client and server end pass through long the connect flow chart that constantly drive method that row quicken of wide area network optimizing device to having set up;
The structured flowchart of the client that Fig. 3 provides for the embodiment of the invention;
The structured flowchart of the server end that Fig. 4 provides for the embodiment of the invention;
The structured flowchart of the wide area network optimizing device that Fig. 5 provides for the embodiment of the invention;
The long structural representation that connects the system that constantly drives the row acceleration into that Fig. 6 provides for the embodiment of the invention to having set up.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In embodiments of the present invention, when first wide area network optimizing device and second wide area network optimizing device trace into after the client and server end all sent a packet, survey the sequence number of the packet of both sides' transmission, and according to this sequence number establishment session, setting up TCP connects, when receiving client once more behind the packet that server end sends, transmission is replied ACK to client, then the packet that receives is optimized processing, and packet to the second wide area network optimizing device after the transmission optimization process, second wide area network optimizing device receives and transmits the packet of user end to server transmission to server end, server end sends replys ACK to the second wide area network optimizing device, like this, when first wide area network optimizing device and second wide area network optimizing device come into force, detect the sequence number that the client and server end connects, creating TCP by this sequence number then on first wide area network optimizing device and second wide area network optimizing device is connected, can satisfy equipment after putting on the shelf or coming into force, network optimization processing is accomplished in the connection of having set up before equally, avoid disconnecting the client and connect, make things convenient for the client to use.
Fig. 1 is after the wide area network optimizing device that provides of the embodiment of the invention lost efficacy, the schematic diagram of the three-way handshake process that the TCP of client and server end connects, and details are as follows:
In embodiments of the present invention, after wide area network optimizing device lost efficacy, client 1 and server end 2 are crossed wide area network optimizing device and are directly set up TCP and be connected, the three-way handshake process that concrete TCP connects is: after client 1 and server end 2 both sides consult separately sequence number (seq) in handshake procedure, based on this sequence number, byte sequence number of the every transmission of transmit leg just up adds 1, the recipient whenever receives 1 byte, the sequence number of replying ACK so also adds 1 thereupon, guarantees the reliability of data with this.
Fig. 2 is after wide area network optimizing device that the embodiment of the invention provides comes into force, the client and server end pass through long the connect flow chart that constantly drive method that row quicken of wide area network optimizing device to having set up, details are as follows:
In step 1, the client transmissions packet is to server end.
As one embodiment of the present of invention, suppose client transmissions this moment the packet of 1 byte (transmission direction of data and byte number average are not done requirement to server end, hypothesis is only for convenience of description herein), the data sequence number of this packet is m, replying the ACK sequence number is n.
In step 2, server end is responded one and is replied ACK to client after receiving the packet of client transmission.
As one embodiment of the present of invention, server end is responded ACK of client, and according to Transmission Control Protocol, the sequence number of this ACK is m+1.
In step 3, when wide area network optimizing device 1 and wide area network optimizing device 2 trace into after the client and server end all sent a packet, survey the sequence number of the packet that both sides send, and create session according to this sequence number, set up TCP and connect.
As one embodiment of the present of invention, when wide area network optimizing device 1 and wide area network optimizing device 2 trace into after the client and server end that is connected by TCP all sent a packet, just can be correct the detecting of sequence number that connects both sides, creating a homing sequence this moment on wide area network optimizing device 1 number is n, the opposite end homing sequence number is that the TCP of m+1 connects, and the state of forcing to be provided with this connection is ESTABLISHED, sending message informing wide area network optimizing device 2 simultaneously creates a homing sequence and number is m+1, the opposite end homing sequence number is that the TCP of n connects, the state that this connection is set equally is ESTABLISHED, if in constructive process, this connects continuation and is sending data, can simply abandon, can guarantee that this packet can retransmit because client connects to the TCP of server end.
In step 4, after the connection between wide area network optimizing device 1 and the wide area network optimizing device 2 created, client sent data to server end again, and the sequence number seq of these data is m+1, and the ack sequence number of replying ACK is n.
As one embodiment of the present of invention, after the connection between wide area network optimizing device 1 and the wide area network optimizing device 2 creates, suppose that client is (same to the data of a byte of server end transmission again, data transfer direction and byte number are at this only for convenience of description), thus the TCP that creates in step 3 at this moment on the wide area network optimizing device 1 connects and just can be used as the acting server agency and respond ACK to client.
In step 5, wide area network optimizing device 1 sends replys ACK to client, and the sequence number ack of this ACK is m+2.
In step 6, the data that 1 pair of client of wide area network optimizing device sends to server end are optimized processing, and the data after the transmission optimization process are to wide area network optimizing device 2.
In step 7, the sequence number that wide area network optimizing device 2 clients send is that the packet of m+1 mails to server end.
In step 8, server end sends and replys ACK, and the sequence number ack of this ACK is m+2.
As one embodiment of the present of invention, server end sends and replys ACK, and the sequence number ack of this ACK is m+2, and this ACK is handled by wide area network optimizing device 2 agent clients then.
In embodiments of the present invention, owing to need control TCP voluntarily, force to be provided with sequence number and state, therefore need make amendment to tcp protocol stack, but be not limited only to this mode, alternate manner can reach this demand and get final product.
The structured flowchart of the client that Fig. 3 provides for the embodiment of the invention for convenience of explanation, only shows the relevant part of the embodiment of the invention.This client comprises: the first packet transmitting element 31, first is replied receiving element 32, the second packet transmitting element 33 and second is replied receiving element 34.
Wherein, the first packet transmitting element 31 sends packet to server end;
First replys the ACK that replys of receiving element 32 reception server ends response;
After first wide area network optimizing device and second wide area network optimizing device were set up TCP and be connected, the second packet transmitting element 33 sent packet to server end;
Second replys the ACK that replys that receiving element 34 receives the transmission of first wide area network optimizing device.Concrete condition does not repeat them here as mentioned above.
The structured flowchart of the server end that Fig. 4 provides for the embodiment of the invention for convenience of explanation, only shows the relevant part of the embodiment of the invention.This server end comprises: the first packet receiving element 41, first is replied transmitting element 42, the second packet receiving element 43 and second is replied transmitting element 44.
Wherein, the first packet receiving element 41 receives the packet that client sends;
First replys transmitting element 42 replys ACK to the client transmission;
Packet after the optimization process that second packet receiving element 43 receptions, second wide area network optimizing device sends;
Second replys transmitting element 44 replys ACK to the transmission of second wide area network optimizing device.Concrete condition does not repeat them here as mentioned above.
The structured flowchart of the wide area network optimizing device that Fig. 5 provides for the embodiment of the invention for convenience of explanation, only shows the relevant part of the embodiment of the invention.This wide area network optimizing device comprises: connect set up unit 51, reply transmitting element 52, packet optimizes transmitting element 53 and/or packet receives transmitting element 54.
Connect and to set up unit 51 and be used for, survey the sequence number of the packet that both sides send, and create session, set up the TCP connection according to this sequence number when tracing into after the client and server end all sent a packet;
Replying transmitting element 52 is used for sending and replying ACK to client behind the packet that receives the transmission of user end to server end;
Packet is optimized the data that transmitting element 53 is used for client is sent to server end and is optimized processing, and sends the packet after the optimization process;
Packet receives transmitting element 54 and receives and transmit described packet and optimize packet after the optimization process that transmitting element sends to server end.Concrete condition does not repeat them here as mentioned above.
Fig. 6 for convenience of explanation, only shows the relevant part of the embodiment of the invention for the long structural representation that connects the system that constantly drives the row acceleration into to having set up that the embodiment of the invention provides.Should the long system that constantly drives the row acceleration into that connects that has set up be comprised: client 61, first wide area network optimizing device 62, second wide area network optimizing device 63 and server end 64.Communication process between the equipment in the concrete system does not repeat them here as mentioned above.
In embodiments of the present invention, when first wide area network optimizing device and second wide area network optimizing device trace into after the client and server end all sent a packet, survey the sequence number of the packet of both sides' transmission, and according to this sequence number establishment session, setting up TCP connects, when receiving client once more behind the packet that server end sends, transmission is replied ACK to client, then the packet that receives is optimized processing, and packet to the second wide area network optimizing device after the transmission optimization process, second wide area network optimizing device receives and transmits the packet of user end to server transmission to server end, server end sends replys ACK to the second wide area network optimizing device, like this, when first wide area network optimizing device and second wide area network optimizing device come into force, detect the sequence number that the client and server end connects, creating TCP by this sequence number then on first wide area network optimizing device and second wide area network optimizing device is connected, can satisfy equipment after putting on the shelf or coming into force, network optimization processing is accomplished in the connection of having set up before equally, avoid disconnecting the client and connect, make things convenient for the client to use.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the long method that constantly drives the row acceleration into that connects to having set up is characterized in that described method comprises the steps:
Client sends packet to server end;
After server end receives the packet of client transmission, send and reply ACK to client;
When first wide area network optimizing device and second wide area network optimizing device trace into after the client and server end all sent a packet, survey the sequence number of the packet that both sides send, and create session according to this sequence number, set up TCP and connect;
After the connection between first wide area network optimizing device and second wide area network optimizing device created, client sent packet to server end again;
After first wide area network optimizing device receives the packet of user end to server transmission, send and reply ACK to client;
First wide area network optimizing device is optimized processing to the packet that client sends to server end, and sends packet to the second wide area network optimizing device after the optimization process;
Second wide area network optimizing device receives and transmits the packet of user end to server transmission to server end;
Server end sends replys ACK to the second wide area network optimizing device.
2. one kind is constantly driven into the system that row quickens to long connection of having set up, first wide area network optimizing device that described system comprises client, be connected by network with described client, second wide area network optimizing device that is connected by network with described first wide area network optimizing device and the server end that is connected by network with described second wide area network optimizing device, it is characterized in that described client comprises:
The first packet transmitting element is used for sending packet to server end;
First replys receiving element, is used for the ACK that replys of reception server end response;
The second packet transmitting element is used for sending packet to server end once more after first wide area network optimizing device and second wide area network optimizing device are set up TCP and be connected;
Second replys receiving element, is used to receive the ACK that replys of first wide area network optimizing device transmission;
Described server end comprises:
The first packet receiving element is used to receive the packet that client sends;
First replys transmitting element, is used for replying ACK to the client transmission;
The second packet receiving element is used to receive the packet after the optimization process that second wide area network optimizing device sends;
Second replys transmitting element, is used for replying ACK to the transmission of second wide area network optimizing device;
Described first wide area network optimizing device or second wide area network optimizing device comprise:
Connect and to set up the unit, be used for, survey the sequence number of the packet that both sides send, and create session, set up the TCP connection according to this sequence number when tracing into after the client and server end all sent a packet;
Reply transmitting element, be used for behind the packet that receives the transmission of user end to server end, sending and replying ACK to client;
Packet is optimized transmitting element, and the data that are used for client is sent to server end are optimized processing, and send the packet after the optimization process; And/or
Packet receives transmitting element, is used to receive and transmit described packet and optimizes packet after the optimization process that transmitting element sends to server end.
3. the long method that constantly drives the row acceleration into that connects to having set up is characterized in that described method comprises the steps:
Send packet to server end;
The reception server end is responded replys ACK;
After first wide area network optimizing device and second wide area network optimizing device are set up TCP and be connected, send packet to server end once more;
Receive the ACK that replys of first wide area network optimizing device transmission.
4. a client is characterized in that, described client comprises:
The first packet transmitting element is used for sending packet to server end;
First replys receiving element, is used for the ACK that replys of reception server end response;
The second packet transmitting element is used for sending packet to server end once more after first wide area network optimizing device and second wide area network optimizing device are set up TCP and be connected;
Second replys receiving element, is used to receive the ACK that replys of first wide area network optimizing device transmission.
5. the long method that constantly drives the row acceleration into that connects to having set up is characterized in that described method comprises the steps:
Receive the packet that client sends;
Reply ACK to the client transmission;
Receive the packet after the optimization process that second wide area network optimizing device sends;
Reply ACK to the transmission of second wide area network optimizing device.
6. a server end is characterized in that, described server end comprises:
The first packet receiving element is used to receive the packet that client sends;
First replys transmitting element, is used for replying ACK to the client transmission;
The second packet receiving element is used to receive the packet after the optimization process that second wide area network optimizing device sends;
Second replys transmitting element, is used for replying ACK to the transmission of second wide area network optimizing device.
7. the long method that constantly drives the row acceleration into that connects to having set up is characterized in that described method comprises the steps:
When first wide area network optimizing device and second wide area network optimizing device trace into after the client and server end all sent a packet, survey the sequence number of the packet that both sides send, and create session according to this sequence number, set up TCP and connect;
Receive the packet of user end to server end transmission when first wide area network optimizing device after, send and reply ACK to client;
First wide area network optimizing device is optimized processing to the data that client sends to server end, and sends packet to the second wide area network optimizing device after the optimization process;
Second wide area network optimizing device receives and transmits packet after the described optimization process to server end.
8. a wide area network optimizing device is characterized in that, described wide area network optimizing device comprises:
Connect and to set up the unit, be used for, survey the sequence number of the packet that both sides send, and create session, set up the TCP connection according to this sequence number when tracing into after the client and server end all sent a packet;
Reply transmitting element, be used for behind the packet that receives the transmission of user end to server end, sending and replying ACK to client;
Packet is optimized transmitting element, and the data that are used for client is sent to server end are optimized processing, and send the packet after the optimization process; And/or
Packet receives transmitting element, is used to receive and transmit described packet and optimizes packet after the optimization process that transmitting element sends to server end.
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| CN 201010118353 CN101827020B (en) | 2010-03-03 | 2010-03-03 | Method and system for speeding up built persistent connection without disconnection |
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| CN 201010118353 CN101827020B (en) | 2010-03-03 | 2010-03-03 | Method and system for speeding up built persistent connection without disconnection |
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| CN101827020B CN101827020B (en) | 2013-01-30 |
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Address after: Nanshan District Xueyuan Road in Shenzhen city of Guangdong province 518000 No. 1001 Nanshan Chi Park building A1 layer Patentee after: SINFOR Polytron Technologies Inc Address before: 518000, four floor, Pioneer Road, 1 Qilin Road, Shenzhen, Guangdong, Nanshan District Patentee before: Shenxinfu Electronics Science and Technology Co., Ltd., Shenzhen |
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