CN101420770A - Fault connection processing method and system in wireless transmission - Google Patents

Fault connection processing method and system in wireless transmission Download PDF

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Publication number
CN101420770A
CN101420770A CNA2008101789762A CN200810178976A CN101420770A CN 101420770 A CN101420770 A CN 101420770A CN A2008101789762 A CNA2008101789762 A CN A2008101789762A CN 200810178976 A CN200810178976 A CN 200810178976A CN 101420770 A CN101420770 A CN 101420770A
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CN
China
Prior art keywords
heartbeat packet
time
data
time interval
link
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
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CNA2008101789762A
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Chinese (zh)
Inventor
苏宏业
柳松
董利达
谈曦
邹骁
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ZHEJIANG SUPCON SOFTWARE CO Ltd
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ZHEJIANG SUPCON SOFTWARE CO Ltd
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Publication date
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Priority to CNA2008101789762A priority Critical patent/CN101420770A/en
Publication of CN101420770A publication Critical patent/CN101420770A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a method for processing false connection in radio transmission and a system thereof. The method comprises the following steps: one or both sides to a data link set a transmission time interval of a heartbeat packet, embed the time interval in the heartbeat packet, and send a series of heartbeat packets to the other side according to the time interval; if the other side to the data link receives the heartbeats at the time interval, then the link is smooth, or a false connection happens, and Socket is cut off. The method and the system can effectively detect the connection state of TCP/IP links, and eliminate the false connection in time.

Description

False processing method and the system that connects in a kind of wireless transmission
Technical field
The present invention relates to a kind of wide area wireless network transmission technology, particularly relate to false processing method and the system that connects in a kind of wireless transmission.
Background technology
In the wide area wireless network transmission, in identification and the processing wireless transmission process, because the communication link instability can cause transmission control protocol/interval agreement (Transmission Control Protocol/InternetProtocol:TCP/IP) transfer of data to produce false the connection.
Wherein, described wireless network is CDMA(Code Division Multiple Access) (Code Division Multiple Access:CDMA) or GPRS (General Packet Radio Service:GPRS) wireless network.
The false connection is because the instability of TCP/IP communication link can't in time detect the state of link, causes TCP client or TCP server end to use a Socket who had lost efficacy to carry out the phenomenon of transfer of data.
Socket is the handle that is used to describe a communication link of IP address and port, is also referred to as socket.
Tcp data is by the pattern work of full duplex, i.e. the transmission of tcp data can send data to the TCP client from the TCP server end also can send data from the TCP client to the TCP server end simultaneously.
In the prior art, do not occurring under the false situation about connecting, the situation of closing of Socket, as shown in Figure 1, the concrete course of work is as follows:
Step 101:TCP server end is finished after the TCP client sends the task of data, initiatively sends one to client and stops packet, connects with the TCP that closes on this direction;
After step 102:TCP client is received the termination packet of TCP server end transmission, will send a confirmation to the TCP server end, and connect with the TCP that closes on this direction, the TCP client is in the wait closed condition, and Socket is passive closing;
Step 103:TCP client is finished after the TCP server end sends the task of data, initiatively sends one to server end and stops packet, connects with the TCP that closes on this direction;
After step 104:TCP server end is received the termination packet of TCP client transmission, will send a confirmation to the TCP client, and connect with the TCP that closes on this direction, this moment, the Socket of client just can be changed to closed condition.
Wherein, step 101,102 and step 103,104 in actual conditions, may have the branch of priority not simultaneously.
In the transmission course of data, the false connection may appear, and it is as follows false situation about connecting to occur:
In step 102, the TCP client is in the wait closed condition, owing to need to handle the mass data before closing connection or handle other affairs, cause not receiving the termination packet that the TCP server end sends, though perhaps receive the termination packet that the TCP server end sends, do not send and confirm bag to the TCP server end, perhaps the TCP server end is not received and is confirmed bag, will cause not closing the Socket of TCP client, cause false the connection at the TCP server end.
In step 104, the TCP server end is in the wait closed condition, owing to need to handle the mass data before closing connection or handle other affairs, cause not receiving the termination packet that the TCP client sends, though perhaps receive the termination packet that the TCP client sends, do not send and confirm bag to the TCP client, perhaps the TCP client is not received and is confirmed bag, will cause not closing the Socket of TCP server end, cause false the connection in the TCP client.
Just owing to equipment self TCP/IP communication mechanism imperfection, the network function module of equipment fails to carry out perfect management to the Socket in the TCP/IP communication, causes false the connection.
When using Socket to communicate, because the influence of various factors, may cause false the connection to rest on TCP client and/or TCP server end, if the data that TCP client and/or TCP server end need be handled connect a lot, because the false existence that connects just makes that the connection that should disconnect still keeps connection status, occupy a lot of data link paths, cause the serious waste of TCP client and/or TCP server end path resource.
For the vacation of eliminating in TCP client and/or the existence of TCP server end connects, in the prior art, keep be set to 2 hour the detection time of active link under the default situations, every 2 hours server network interface cards the TCP/IP link is detected, if the TCP/IP link is in the wait acknowledge closed condition and thinks that then this link is in false connection status, disconnect this vacation and connect.The TCP/IP link of Jian Ceing needs the longer time during waiting for server network interface card detection vacation connection more for a long time if desired.
In the prior art, the time interval of detecting the vacation connection is long, and the TCP/IP link of Jian Ceing time that need be longer when the waiting for server network interface card detects false the connection, can not effectively prevent owing to vacation connects the wasting of resources that causes more for a long time if desired.
Summary of the invention
In view of this, the embodiment of the invention provides in a kind of wireless transmission the false processing method that connects, and utilizes this method, can be effectively the connection status of TCP/IP link be detected, and in time eliminates false connection.
For achieving the above object, the invention provides the false processing method that connects in a kind of wireless transmission, comprising:
Steps A: the transmission time interval that a side of data link or both sides set heartbeat packet, and this embedded heartbeat packet in time interval sends a series of heartbeat packet to the opposing party according to this time interval;
Step B: the opposing party of data link is as if receiving heartbeat packet according to this time interval, and then link is unimpeded, if not, then may be false the connection, disconnects Socket.
Preferably, comprising:
Described heartbeat packet is to send to detect data receiver is connected communication condition with data receiver's link self-defining protocol package.
Preferably, comprising:
The data structure of described heartbeat packet is a string character string, form by 4 parts, first part represents that second and third part that sends is blanking time or transmitting time point, set sign indicating number " 1 ", second and third part that expression sends is blanking time, sets sign indicating number " 2 " and represents that second and third part that sends is the transmitting time point, and second and third part is a data division, this data division is represented transmitting time point or blanking time, and the 4th originally is divided into end mark.
Preferably, comprising:
The data structure of described heartbeat packet is a string character string, form by 4 parts, first part represents that second and third part that sends is blanking time or transmitting time point, second and third part of setting sign indicating number " 1 " expression transmission is the transmitting time point, second and third part of setting sign indicating number " 2 " expression transmission is blanking time, second and third part is a data division, and this data division is represented transmitting time point or blanking time, and the 4th originally is divided into end mark.
Preferably, comprising:
The data structure of described heartbeat packet is a string character string, form by 4 bytes, second and third byte that first byte representation sends is blanking time or transmitting time, second and third byte of setting sign indicating number " 1 " expression transmission is blanking time, second and third byte of setting sign indicating number " 2 " expression transmission is a transmitting time, second and third byte is a data division, and this data division is represented transmitting time point or blanking time, and the 4th byte is end mark.
Preferably, comprising:
Described second and third byte adopts the Short type.
Preferably, describedly this embedded heartbeat packet in time interval also comprise:
The sign that is the time interval with this time information of sign embeds heartbeat packet.
Preferably, also comprise before the described steps A:
Direction the opposing party of data link sends heartbeat packet, and the opposing party of data link receives heartbeat packet.
Preferably, described steps A is:
The opposing party of data link sets the transmission time interval of heartbeat packet, and being the time interval with this time interval and this time information of sign, sign embeds heartbeat packet, according to the side transmission a series of heartbeat packet of this time interval to data link.
Preferably, described step B is:
One side of data link is as if receiving heartbeat packet according to this time interval, and then link is unimpeded, then may be false the connection if not, disconnects Socket;
And/or
One side of data link is as if receiving heartbeat packet according to this time interval, set a series of heartbeat packet according to this time interval and send to the data receiver, the opposing party of data link is as if receiving heartbeat packet according to this time interval, and then link is unimpeded, then may be false the connection if not, disconnect Socket.
Preferably, direction the opposing party of described data link sends heartbeat packet and is specially:
One side of data link is with transmitting time dot information t 0The sign that is transmitting time point with this time information of sign embeds heartbeat packet, and heartbeat packet is sent to the opposing party of data link;
After the opposing party of described data link receives heartbeat packet, also comprise:
Time t with this moment 1Deduct the time t that stores in the heartbeat packet 0, calculate the transmission time t of this heartbeat packet 2, if t 2Less than a certain finite time value, think that then current link is unimpeded.
The false treatment system that connects in a kind of wireless transmission comprises:
First transmitting element is used for: the transmission time interval that a side of data link or both sides set heartbeat packet, and this embedded heartbeat packet in time interval sends a series of heartbeat packet to the opposing party according to this time interval;
Receiving element is used for: the opposing party of data link is as if receiving heartbeat packet according to this time interval, and then link is unimpeded, then may be false the connection if not, disconnects Socket.
Preferably, also comprise:
Second transmitting element is used for: direction the opposing party of data link sends heartbeat packet, and the opposing party of data link receives heartbeat packet.
As seen, the present invention can realize making up the data structure of heartbeat packet in the wireless network control agreement, has guaranteed that TCP server end and TCP client can in time detect the connection status of TCP/IP link; In data transmission procedure, TCP server end and TCP customer end adopted independently testing mechanism detect the connection status of TCP/IP link, and can dynamically adjust the transmission frequency of heartbeat packet, realized detecting more efficiently the connection status of TCP/IP link, thereby in time eliminate false the connection, effectively prevented owing to vacation connects the wasting of resources that causes.
Description of drawings
Fig. 1 is the flow chart of embodiment one in the prior art;
Fig. 2 is the flow chart of embodiment one among the present invention;
Fig. 3 is the flow chart of embodiment two among the present invention;
Fig. 4 is the system construction drawing of the embodiment of the invention.
Embodiment
The invention provides in a kind of wireless transmission false processing method and the system that connects, utilize this method can be effectively the connection status of TCP/IP link to be detected, in time eliminate false connection.
Below in conjunction with drawings and the specific embodiments the present invention is elaborated.
As shown in Figure 2, the embodiment of the invention one provides the false processing method that connects in a kind of wireless transmission, in this method data both can from the TCP server end to the TCP client transmissions also can be simultaneously from the TCP client to the transmission of TCP server end, and the link between TCP server end and the TCP client communicates during the hypothesis beginning.
Step 201: the transmission time interval that a side of data link or both sides set heartbeat packet, and this embedded heartbeat packet in time interval sends a series of heartbeat packet to the opposing party according to this time interval;
Described heartbeat packet is to send to detect data receiver is connected communication condition with data receiver's link self-defining protocol package.
The data structure of described heartbeat packet is a string character string, form by 4 bytes, second and third byte that first byte representation sends is blanking time or transmitting time, second and third byte of setting sign indicating number " 1 " expression transmission is blanking time, second and third byte of setting sign indicating number " 2 " expression transmission is the transmitting time point, second and third byte is a data division, and this data division is represented transmitting time point or blanking time, and the 4th byte is end mark.
In actual applications, described second and third byte often adopts the Short type.
The data structure of heartbeat packet is as shown in table 1.
Table 1
It should be noted that second and third byte of described heartbeat packet can with first byte transposition, do not influence enforcement of the present invention.The concrete data structure of heartbeat packet is not limited to foregoing description, for example: can the extended byte number, the designer can adopt the data structure of other form as heartbeat packet.
If 20 milliseconds temporal informations are embedded second and third byte of heartbeat packet, and with first byte with " 1 " expression, send a series of heartbeat packet to the opposing party according to this time interval.
In actual conditions, can be to have only wherein a side to set the transmission time interval of heartbeat packet, and this time interval is embedded heartbeat packet, send a series of heartbeat packet to the opposing party according to this time interval.
But in a more general case, the both sides of data link set the transmission time interval of heartbeat packet, and this is embedded heartbeat packet in time interval, send a series of heartbeat packet to the opposing party according to this time interval.Wherein, the transmission time interval that both sides set heartbeat packet has the branch of priority, set the transmission time interval of heartbeat packet earlier as a side, and with this time interval embedding heartbeat packet, send a series of heartbeat packet to the opposing party according to this time interval, after the opposing party received heartbeat packet, described the opposing party generates oneself again according to the time interval information in the heartbeat packet of receiving a series of heartbeat packet mail to the other side then.
Step 202: the opposing party of data link is as if receiving heartbeat packet according to this time interval, and then link is unimpeded, then may be false the connection if not, disconnects Socket.
The method of describing by present embodiment can be effectively detects the connection status of TCP/IP link, in time eliminates false connection, is described in detail in conjunction with a specific embodiment more below.
As shown in Figure 3, the embodiment of the invention two provides the false processing method that connects in a kind of wireless transmission, in this method data both can from the TCP server end to the TCP client transmissions also can be simultaneously from the TCP client to the transmission of TCP server end, and the link between TCP server end and the TCP client communicates during the hypothesis beginning.
In the previous case, the TCP server end is a data receiver, and the TCP client is the data receiver, and under latter event, the TCP client is a data receiver, and the TCP server end is the data receiver.Because both of these case can simultaneously and be deposited, step is not below done differentiation to both in describing, and only writes data receiver and data receiver exactly.
Step 3011: heartbeat packet is set;
Described heartbeat packet is identical with the description among the last embodiment.
Data receiver is with zero-time t 0Information is second and third byte that transmission time information embeds heartbeat packet, and first byte is set to represent that second and third byte is a transmitting time, i.e. first byte " 2 " expression.
Step 3012: the unobstructed situation in path and the corresponding relation in the needed time interval of transfer of data that all set in advance transfer of data data receiver and data receiver;
For example, as shown in the table, but be not limited to following table.
Table 2
The unobstructed degree in path The time interval t that calculates 2=t 1-t 0 The time interval t that sets 3
Unobstructed Smaller or equal to 10 milliseconds 20 milliseconds
Need to prove step 3011 and step 3012 order in no particular order.
Step 302: heartbeat packet is sent to the data receiver;
Preferably, heartbeat packet can together be sent to the data receiver with the data that need transmission.
Step 303: after data receiver is received heartbeat packet, with the time t of this moment 1Deduct the time t that stores in the heartbeat packet 0, calculate the transmission time t of this heartbeat packet 2
Step 304: the time interval t that the data receiver goes out compute 2Compare with the data in the table 2, link is unimpeded during owing to the hypothesis beginning, thereby the transmission time t of the heartbeat packet of calculating 2Smaller or equal to 10 milliseconds, according to shown in the table 2, the time interval of setting heartbeat packet is 20 milliseconds, and 20 milliseconds temporal informations are embedded second and third byte of heartbeat packet, and first byte is represented with " 1 ";
Step 3051: a series of heartbeat packet are mail to data receiver with 20 milliseconds the time interval, data receiver is if can receive the heartbeat packet row successively in 20 milliseconds, then link is unimpeded, if can not receive the heartbeat packet row successively in 20 milliseconds, then false the connection may appear in link, disconnects Socket;
Step 3052: a series of heartbeat packet are mail to data receiver with 20 milliseconds the time interval, it is heartbeat packet of 20 milliseconds that data receiver is set up a series of time intervals, and send to the data receiver, the data receiver is if can receive the heartbeat packet row successively in 20 milliseconds, then link is unimpeded, if can not receive the heartbeat packet row successively in 20 milliseconds, then false the connection may appear in link, disconnects Socket.
Step 3051 and step 3052 be order in no particular order.
More than be introduction, will introduce the false treatment system embodiment that connects in the wireless transmission below the false processing method that connects in the wireless transmission.
With reference to Fig. 4, the system block diagram of the embodiment of the invention below is described, comprising:
First transmitting element 401 is used for: the transmission time interval that a side of data link or both sides set heartbeat packet, and this embedded heartbeat packet in time interval sends a series of heartbeat packet to the opposing party according to this time interval;
Receiving element 402 is used for: the opposing party of data link is as if receiving heartbeat packet according to this time interval, and then link is unimpeded, then may be false the connection if not, disconnects Socket.
Send under the situation of the heartbeat packet that comprises transmission time information to the data receiver in data receiver, also comprise:
Second transmitting element 403 is used for: direction the opposing party of data link sends heartbeat packet, and the opposing party of data link receives heartbeat packet.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all be included in protection scope of the present invention.

Claims (13)

1, the false processing method that connects in a kind of wireless transmission is characterized in that, comprising:
Steps A: the transmission time interval that a side of data link or both sides set heartbeat packet, and this embedded heartbeat packet in time interval sends a series of heartbeat packet to the opposing party according to this time interval;
Step B: the opposing party of data link is as if receiving heartbeat packet according to this time interval, and then link is unimpeded, then may be false the connection if not, disconnects Socket.
2, method according to claim 1 is characterized in that, comprising:
Described heartbeat packet is to send to detect data receiver is connected communication condition with data receiver's link self-defining protocol package.
3, method according to claim 1 is characterized in that, comprising:
The data structure of described heartbeat packet is a string character string, form by 4 parts, first part represents that second and third part that sends is blanking time or transmitting time point, second and third part of setting sign indicating number " 1 " expression transmission is blanking time, second and third part of setting sign indicating number " 2 " expression transmission is the transmitting time point, second and third part is a data division, and this data division is represented transmitting time point or blanking time, and the 4th originally is divided into end mark.
4, method according to claim 1 is characterized in that, comprising:
The data structure of described heartbeat packet is a string character string, form by 4 parts, first part represents that second and third part that sends is blanking time or transmitting time point, second and third part of setting sign indicating number " 1 " expression transmission is the transmitting time point, second and third part of setting sign indicating number " 2 " expression transmission is blanking time, second and third part is a data division, and this data division is represented transmitting time point or blanking time, and the 4th originally is divided into end mark.
5, method according to claim 1 is characterized in that, comprising:
The data structure of described heartbeat packet is a string character string, form by 4 bytes, second and third byte that first byte representation sends is blanking time or transmitting time, second and third byte of setting sign indicating number " 1 " expression transmission is blanking time, second and third byte of setting sign indicating number " 2 " expression transmission is the transmitting time point, second and third byte is a data division, and this data division is represented transmitting time point or blanking time, and the 4th byte is end mark.
6, method according to claim 5 is characterized in that, comprising:
Described second and third byte adopts the Short type.
7, method according to claim 1 is characterized in that, describedly this is embedded heartbeat packet in time interval also comprises:
The sign that is the time interval with this time information of sign embeds heartbeat packet.
8, method according to claim 1 is characterized in that, also comprises before the described steps A:
Direction the opposing party of data link sends heartbeat packet, and the opposing party of data link receives heartbeat packet.
9, method according to claim 8 is characterized in that, described steps A is:
The opposing party of data link sets the transmission time interval of heartbeat packet, and being the time interval with this time interval and this time information of sign, sign embeds heartbeat packet, according to the side transmission a series of heartbeat packet of this time interval to data link.
10, method according to claim 9 is characterized in that, described step B is:
One side of data link is as if receiving heartbeat packet according to this time interval, and then link is unimpeded, then may be false the connection if not, disconnects Socket;
And/or
One side of data link is as if receiving heartbeat packet according to this time interval, set a series of heartbeat packet according to this time interval and send to the data receiver, the opposing party of data link is as if receiving heartbeat packet according to this time interval, and then link is unimpeded, then may be false the connection if not, disconnect Socket.
11, method according to claim 8 is characterized in that, direction the opposing party of described data link sends heartbeat packet and is specially:
One side of data link is with transmitting time dot information t 0The sign that is transmitting time point with this time information of sign embeds heartbeat packet, and heartbeat packet is sent to the opposing party of data link;
After the opposing party of described data link receives heartbeat packet, also comprise:
Time t with this moment 1Deduct the time t that stores in the heartbeat packet 0, calculate the transmission time t of this heartbeat packet 2, if t 2Less than a certain finite time value, think that then current link is unimpeded.
12, the false treatment system that connects in a kind of wireless transmission is characterized in that, comprising:
First transmitting element is used for: the transmission time interval that a side of data link or both sides set heartbeat packet,
And this embedded heartbeat packet in time interval, send a series of heartbeat packet to the opposing party according to this time interval;
Receiving element is used for: the opposing party of data link is as if receiving heartbeat packet according to this time interval, and then link is unimpeded, then may be false the connection if not, disconnects Socket.
13, system according to claim 12 is characterized in that, also comprises:
Second transmitting element is used for: direction the opposing party of data link sends heartbeat packet, and the opposing party of data link receives heartbeat packet.
CNA2008101789762A 2008-12-03 2008-12-03 Fault connection processing method and system in wireless transmission Pending CN101420770A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101801058A (en) * 2010-03-24 2010-08-11 杭州华三通信技术有限公司 Method and device for refreshing media access control (MAC) items in Mesh mobile application network
CN102638563A (en) * 2011-02-09 2012-08-15 西门子公司 Keep alive message monitoring
CN102946149A (en) * 2012-12-06 2013-02-27 广州南方电力集团科技发展有限公司 Automatic monitoring terminal for distributed distribution network
CN105049477A (en) * 2015-05-26 2015-11-11 腾讯科技(深圳)有限公司 Method and device for maintaining long connection
CN105635248A (en) * 2015-12-18 2016-06-01 Tcl集团股份有限公司 Method and system for releasing TCP (Transmission Control Protocol) connection resources
CN106375152A (en) * 2016-08-31 2017-02-01 北京信而泰科技股份有限公司 Method for processing communication abnormality of Client/Server (C/S) architecture
CN108573483A (en) * 2017-03-14 2018-09-25 研祥智能科技股份有限公司 Signal box control method based on Machine Vision Inspecting System and device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101801058A (en) * 2010-03-24 2010-08-11 杭州华三通信技术有限公司 Method and device for refreshing media access control (MAC) items in Mesh mobile application network
CN101801058B (en) * 2010-03-24 2013-04-17 杭州华三通信技术有限公司 Method and device for refreshing media access control (MAC) items in Mesh mobile application network
CN102638563A (en) * 2011-02-09 2012-08-15 西门子公司 Keep alive message monitoring
CN102946149A (en) * 2012-12-06 2013-02-27 广州南方电力集团科技发展有限公司 Automatic monitoring terminal for distributed distribution network
CN105049477A (en) * 2015-05-26 2015-11-11 腾讯科技(深圳)有限公司 Method and device for maintaining long connection
CN105635248A (en) * 2015-12-18 2016-06-01 Tcl集团股份有限公司 Method and system for releasing TCP (Transmission Control Protocol) connection resources
CN105635248B (en) * 2015-12-18 2019-06-11 Tcl集团股份有限公司 A kind of method for releasing and system of TCP connection resource
CN106375152A (en) * 2016-08-31 2017-02-01 北京信而泰科技股份有限公司 Method for processing communication abnormality of Client/Server (C/S) architecture
CN108573483A (en) * 2017-03-14 2018-09-25 研祥智能科技股份有限公司 Signal box control method based on Machine Vision Inspecting System and device

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