CN105897792A - Message loss prevention method in comet technology - Google Patents
Message loss prevention method in comet technology Download PDFInfo
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- CN105897792A CN105897792A CN201410692336.9A CN201410692336A CN105897792A CN 105897792 A CN105897792 A CN 105897792A CN 201410692336 A CN201410692336 A CN 201410692336A CN 105897792 A CN105897792 A CN 105897792A
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Abstract
The invention provides a message loss prevention method in a comet technology, and belongs to the comet technology based communication field. According to the invention, a serial number is added to http persistent connection sent by a client, a serial number is also added to a message pushed to the client by a server, and then matching is carried out on a serial number received by the server and a serial number in a temporary buffer area. If the serial number received by the server is matched with the serial number in the temporary buffer area, it is indicated that the client already receives the message pushed by the server; and if the serial number received by the server is not matched with the serial number in the temporary buffer area, it is indicated that the client loses the message pushed by the server. Through the mechanism provided by the invention, the client in the http persistent connection can be ensured to receive messages according to a correct sequence, and the message are prevented from being lost.
Description
Technical field
The present invention relates to the message anti-loss method in a kind of comet technology, belong to the communications field based on comet technology.
Background technology
Comet connects " server push " technology based on HTTP length, and being exactly briefly client transmission one please
Asking, server receives it, and uses an Infinite Cyclic, in data push to the response that client is needed,
And refresh, but this response is not turned off, and continues to new data and refreshes, until client disconnects
Connecting, this circulation just terminates to exit.
Comet is particularly well-suited to need and the application of server end real-time, interactive, such as monitoring, instant messaging, i.e. Times
Valency system is required in real time the change that backstage occurs being sent to client and ceaselessly refreshing without client, send and ask
Ask.
In the various application of Comet technology, when server sends real-time messages to client, due to network reason
With terminal self reason, it is likely to result in information drop-out.But, there is presently no in solution Comet technology and prevent message
The method lost.
Summary of the invention
For solving the problems referred to above, the invention provides the message anti-loss method in a kind of comet technology.By this mechanism,
The present invention ensure that the client in the connection of http length collects message in the correct order, prevents information drop-out.
The invention provides following scheme:
1. client obtains serial number.
Wherein, the form of original state is not limited to serial number, as long as the mode that client and server is reserved in advance in advance,
It is able to confirm that first of client asks.In addition to original state, other serial number is to client by server
The mode that end pushes obtains.
2. client sends the connection of http length, adds serial number in http length connects.
Wherein, upper http length has been connected reply message and serial number backs up to extra buffer.
Extra buffer in server, is used for storing serial number and message backup.Extra buffer is ephemeral data storage
Region, can be the region that can store data such as internal memory or disk, the form of scratchpad area (SPA) not as this patent must
Want condition.Every http connects corresponding unique serial number.
When message is pushed to client by server, now need to carry out message backup in extra buffer, only when
After server confirms that client receives this message, just the message of extra buffer is backed up and remove.
3. received server-side connects to http length, analyzes during this length connects the serial number carried.
4. the serial number in this http length being connected is carried out with the serial number of the message of storage in server end extra buffer
Coupling.
If the serial number that 5. in extra buffer, the serial number of the message of storage carries in connecting with http length is consistent, explanation
Client have received a piece of news, then removed by the upper a piece of news that extra buffer backs up.Then server
Lower a piece of news in message queue is sent to client, this message is put in extra buffer simultaneously and backs up, treats
After confirming that client receives this message, then by this message erasing.
6., if the serial number that in relief area, the serial number of storage carries in asking with length is inconsistent, illustrate that a piece of news is lost
Losing, now the upper a piece of news backed up in relief area is sent to client by server end again, until confirming that client is received
To upper a piece of news.
The present invention adds serial number in being connected by the http length sent in client, pushes away to client at server simultaneously
Also adding serial number in the message sent, the serial number then received by server is carried out with the serial number in extra buffer
Coupling.If coupling is consistent, illustrate that client has been received by the message of server push；If inconsistent, illustrate that client is lost
Lose the message of server push.By using the method, it is possible to effectively prevent the information drop-out in comet technology.
Accompanying drawing explanation
Fig. 1 is the message anti-loss method schematic diagram in comet technology.
Fig. 2 is to set up flow chart when the 1st article of http length connects.
Fig. 3 is the flow chart that client receives N-1 article of message.
Fig. 4 is the flow chart that client loses N-1 article of message.
Detailed description of the invention
Message anti-loss method in a kind of comet technology that the present invention proposes, in conjunction with accompanying drawing and implement detailed example and be described as follows.
The schematic diagram of the message anti-loss method in Comet technology, as shown in Figure 1.User end to server sends http
Long connection, after server judges, pushes to client by message.Server increases an extra buffer, uses
In storage serial number and message backup.
The flow process of the message anti-loss method being specifically described below in comet technology, first to set up the 1st article of http length
As a example by connection, comprise the following steps.
S1. client sends the 1st article of http length connection and initial validation testing.
S2. server receives the 1st article of http length connection and the initial validation testing that client sends.
S3. the initial sequence number received is mated by server with the serial number of storage in extra buffer.In service
Before device receives the connection of http length, in extra buffer, storage is initial validation testing, and therefore coupling is consistent.
S4. renewal sequence number in extra buffer, and the message corresponding to the connection of this http length is backed up.
S5. this message of server push is to client.
In order to express easily, the serial number after updating can be referred to as the 1st serial number, this message of server push is the
Article 1, message, by that analogy.
It is generalized to generally, receives as a example by the N-1 article message by client, as it is shown on figure 3, comprise the following steps.
S1. client receives the N-1 article message, and now carry in message is n-th serial number.
Although client has received the N-1 article message, but server also confirms, now deposits in extra buffer
That stores up remains the N-1 article message and n-th serial number.
S2. user end to server sends the serial number N that the N article http length connects and receives in step S1.
S3. server receives the N article http length connection and the n-th serial number that client sends.
S4. the serial number N received is mated by server with the serial number of storage in extra buffer.By step S1
Understanding, now store in extra buffer is n-th serial number, and the serial number received with server is consistent, therefore
Server confirms that client has been properly received the N-1 article message.
S5. extra buffer is removed the N-1 article and is replied message and n-th serial number, backs up the N article simultaneously and replies message
With the N+1 serial number.
S6. the N article is replied message and sends to client with the N+1 serial number by server.
In order to situation when client loses N-1 article of message is described, as shown in Figure 4, comprise the following steps.
S1. server confirms that client loses the N-1 article message.
S2. the content of storage in server calls extra buffer.Extra buffer stores message and serial number.
S3. the message in extra buffer and serial number are pushed to client by server again, until server confirms visitor
Family end receives this message.
Claims (3)
1. the message anti-loss method in a comet technology, it is characterised in that the method comprising the steps of:
S1. client obtains serial number；
S2. 2. clients send the connection of http length, add serial number in http length connects；
S3. received server-side connects to http length, analyzes during this length connects the serial number carried.
S4. in serial number and the server end extra buffer in this http length being connected, the serial number of the message of storage is carried out
Join；
If the serial number that S5. in extra buffer, the serial number of the message of storage carries in connecting with http length is consistent, client is described
End have received a piece of news, then the lower a piece of news in server end message queue is sent to client；
If the serial number that S6. in relief area, the serial number of storage carries in asking with length is inconsistent, illustrate that a piece of news is lost, this
Time server end the upper a piece of news backed up in relief area is sent again to client, until confirming that client receives one and disappears
Breath.
Message anti-loss method in comet technology the most according to claim 1, it is characterised in that
In step sl, the form of original state is not limited to serial number, as long as the mode that client and server is reserved in advance in advance,
It is able to confirm that first of client asks.In addition to original state, other serial number is to be pushed away to client by server
The mode sent obtains.
Message anti-loss method in comet technology the most according to claim 1, it is characterised in that in step S5
In, if the serial number that in extra buffer, the serial number of the message of storage carries in connecting with http length is consistent, illustrate that client is
Through have received upper a piece of news, then the upper a piece of news that extra buffer backs up is removed.Then in server message queue
Lower a piece of news is sent to client, this message is put in extra buffer simultaneously and backs up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692336.9A CN105897792A (en) | 2014-11-27 | 2014-11-27 | Message loss prevention method in comet technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692336.9A CN105897792A (en) | 2014-11-27 | 2014-11-27 | Message loss prevention method in comet technology |
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| CN105897792A true CN105897792A (en) | 2016-08-24 |
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| CN201410692336.9A Pending CN105897792A (en) | 2014-11-27 | 2014-11-27 | Message loss prevention method in comet technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106713328A (en) * | 2016-12-29 | 2017-05-24 | 北京奇虎科技有限公司 | Information processing method and apparatus based on long connection |
| CN106790728A (en) * | 2017-03-30 | 2017-05-31 | 北京深思数盾科技股份有限公司 | information push method and system |
| CN106941461A (en) * | 2017-02-23 | 2017-07-11 | 江苏徐工信息技术股份有限公司 | A kind of method that utilization message queue optimizes server processing requests |
| CN108173807A (en) * | 2017-11-28 | 2018-06-15 | 贵阳语玩科技有限公司 | Unified message is sent, processing method and processing device |
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| CN102881183A (en) * | 2012-09-28 | 2013-01-16 | 方正国际软件有限公司 | Public transport line bamboo joint map real-time interactive system |
| CN103237048A (en) * | 2013-03-13 | 2013-08-07 | 山西省电力公司大同供电分公司 | Real-time warning system and real-time warning method of B/S framework in electrical power system |
| US20140280522A1 (en) * | 2011-02-02 | 2014-09-18 | Imvu Inc. | System and method for providing an actively invalidated client-side network resource cache |
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Patent Citations (4)
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| CN102480517A (en) * | 2010-11-30 | 2012-05-30 | 北京千橡网景科技发展有限公司 | Data push method, mobile terminal and server |
| US20140280522A1 (en) * | 2011-02-02 | 2014-09-18 | Imvu Inc. | System and method for providing an actively invalidated client-side network resource cache |
| CN102881183A (en) * | 2012-09-28 | 2013-01-16 | 方正国际软件有限公司 | Public transport line bamboo joint map real-time interactive system |
| CN103237048A (en) * | 2013-03-13 | 2013-08-07 | 山西省电力公司大同供电分公司 | Real-time warning system and real-time warning method of B/S framework in electrical power system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106713328A (en) * | 2016-12-29 | 2017-05-24 | 北京奇虎科技有限公司 | Information processing method and apparatus based on long connection |
| CN106941461A (en) * | 2017-02-23 | 2017-07-11 | 江苏徐工信息技术股份有限公司 | A kind of method that utilization message queue optimizes server processing requests |
| CN106790728A (en) * | 2017-03-30 | 2017-05-31 | 北京深思数盾科技股份有限公司 | information push method and system |
| CN108173807A (en) * | 2017-11-28 | 2018-06-15 | 贵阳语玩科技有限公司 | Unified message is sent, processing method and processing device |
| CN108173807B (en) * | 2017-11-28 | 2021-12-03 | 贵阳语玩科技有限公司 | Unified message sending and processing method and device |
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