CN107332735A - The network communication method of Auto-reconnect after disconnection - Google Patents
The network communication method of Auto-reconnect after disconnection Download PDFInfo
- Publication number
- CN107332735A CN107332735A CN201710538541.3A CN201710538541A CN107332735A CN 107332735 A CN107332735 A CN 107332735A CN 201710538541 A CN201710538541 A CN 201710538541A CN 107332735 A CN107332735 A CN 107332735A
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- Prior art keywords
- server
- terminal
- reconnect
- auto
- connection
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/161—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
Abstract
The present invention relates to terminal and the communication technology of server.The present invention, which solves current terminal to server request connection and the request of server receipt terminal, to be carried out by the same thread specified, it is when multiple terminal to server send the connection request of connection request and the multiple terminals of server receipt, easily cause path blocking, and the problem of during the communication abnormality of terminal and server there is drawback in Auto-reconnect, it is proposed that its technical scheme of the network communication method of Auto-reconnect can be summarized as after a kind of disconnection：During each terminal to server request connection, respectively create one and send thread and receiving thread, server is respectively created corresponding receiving thread corresponding to each terminal and sends thread, server judges network communication status with terminal room by packet loss, terminal once detects to be connected disconnection with server communication, connection is then re-established immediately, and server once detects that the communication with some terminating machine disconnects, then actively destroys original old connection.
Description
Technical field
The present invention relates to the network communications technology, more particularly to server communicates with terminal room disconnect after Auto-reconnect skill
Art.
Background technology
Now, network service is a basic function essential to most terminal devices, and terminal device will access net
Network, it is necessary to which the service provided using Virtual network operators such as movement, UNICOMs, wifi and cable network and mobile network are that terminal is set
3 kinds of main paths of standby online, wifi and it is wired it is general collect corresponding expense by the size in broadband, and mobile network is then by making
Network traffics are collected the charges.Wifi surfs the Net and wiring logging-on function needs to install router near terminal device, but at certain
A little places simultaneously are inconvenient to install router, such as the strict emporium of road side, system.Even if convenient install, road is worried again
It is damaged at any time by device, so many terminal devices are preferentially from mobile network's online, although being using mobile network
Charge on traffic is installed, it is relatively expensive.
TCP/IP is the basis of whole internet communication, and it solves the routing issue of packet, and exists in packet
When surprisingly being lost in transmission, it can be retransmitted to packet, therefore in the case of physical communication lines are normal, TCP/IP
Agreement ensure that packet can pass to another network node from a network node exactly, and it is a reliable network
Communication protocol.Network service now is typically all to use http protocol, and http protocol is on the basis of ICP/IP protocol
The network communication protocol further formulated, with respect to ICP/IP protocol, it has carried out the encapsulation of deeper to packet, and it causes hair
Sending end and receiving terminal are all easily handled data, but there is also defect, it has carried out deeper level to initial data
Encapsulation, therefore relative ICP/IP protocol http protocol more expends flow.And the communication between some terminating machines and server
Data are simultaneously uncomplicated, for this kind of machine, are not necessary to be communicated using http protocol, are directly based upon TCP/IP
Agreement is communicated, and can reach the purpose for saving flow.
Another some equipment (such as automatic vending machine) require higher to network communication quality, in order to normally perform business work
Make, they need to be communicated with server in real time.But network communication state complex, terminating machine is sometimes difficult with server
Exempt to disconnect, it is illegal that such as some servers once detect the data that some terminating machine sends, for security consideration,
Server will disconnect the communication connection with the terminating machine automatically.Detect in time network communications status and it is automatic again
The connection for setting up terminating machine and server end is the strong demand of users.
On the one hand, user needs reduction terminating machine flow using cost-effective, another aspect, and terminating machine performs industry to be normal
A kind of sane network communication method of business comparison of need of work, therefore research saves the network of meeting Auto-reconnect after flow and disconnection
Communication means has very profound significance.
The content of the invention
The purpose of the present invention is to propose to a kind of network communication method of Auto-reconnect after disconnection, can solve the problem that current terminal to
Server request connection and the request of server receipt terminal are that it is in multiple terminals by the same thread progress specified
During to server transmission connection request and the connection request of the multiple terminals of server receipt, path blocking is easily caused, and
The problem of communications status of network can not be detected during the communication abnormality of terminal and server during Auto-reconnect in time.
The present invention solves its technical problem, and the technical scheme of use is：The network communication method of Auto-reconnect after disconnection, its
It is characterised by, comprises the following steps：
Step 1, unlatching server；
Step 2, server wait the connection request of terminal；
Step 3, terminal create one and send thread and receiving thread；
Step 4, terminal to server send connection request；
Step 5, server are received after the connection request of terminal, and server correspondence creates a new transmission thread and new
Receiving thread；
Step 6, terminal are by sending thread to server transmission packet；
The packet that step 7, server are sent by new receiving thread receiving terminal, and judge the communication link with terminal
Whether normal connect, the communication connection with terminal is normal if judging, into step 8, if judging abnormal with the communication connection of terminal,
The new transmission thread communicated with terminating machine is then terminated, this new receiving thread is then terminated, is then back to step 3；
The reply data bag that step 8, terminal are sent by receiving thread the reception server, and judge the communication with server
Whether connection is normal, if judging, the communication connection with server is normal, return to step 6, if judging the communication link with server
Connect abnormal, then return to step 4.
It is further that the server is communicated with terminal using ICP/IP protocol.
It is further to be specially in step 2：The server runs the connection request program of terminal, the terminal
Connection request program includes the port numbers that the IP address and server of server are specified.
It is further, in step 6 or step 7, the packet heartbeat data packets and business data packet.
Be further, in step 6, terminating machine when no business data packet is transmitted to server, will at interval of when
Between t send heartbeat packet to server end, the size of the time t arranged in advance by terminal with server end.
It is further that in step 7, server is received after the packet that terminal is sent every time, then is sent out immediately to terminal
Send corresponding reply data bag.
It is further that in step 8, the data answering core jumps response bag and business response bag.
It is further that server judges whether the communication connection with terminal normally specifically includes in step 7：Server is remembered
The time that record last time receives the packet that terminal is sent is T1, according to server patient maximum the packet loss upper limit N, N
Value can set as the case may be, when current time is T2 moment, if meeting (T2-T1)/t>N, then server judgement
Its communication connection with terminal is already off, if meeting (T2-T1)/t<=N, then server judgement is connected just with terminal communication
Often.
It is further that terminal judges whether the communication connection with server normally specifically includes in step 8：Terminal is recorded
The time that last time receives the reply data bag that server end is sent is t1, according to the patient maximum packet loss upper limit of terminal
N, n value can be set as the case may be, when current time is the t2 moment, if meeting (t2-t1)/t>N, then terminal judgement
It is connected already off with server communication, if meeting (t2-t1)/t<=n, then terminal judge that it is connected with server communication
Normally.
The beneficial effects of the invention are as follows by technical scheme, the communication shape of network can be detected in time
State, and each terminal with server sets up network service and be connected and respectively use its each self-corresponding path, it is to avoid transmit
Path is blocked.
Embodiment
With reference to embodiment, technical scheme is described in detail.
The network communication method of Auto-reconnect, comprises the following steps after disconnection of the present invention：
Step 1, unlatching server；
Step 2, server wait the connection request of terminal；
Step 3, terminal create one and send thread and receiving thread；
Step 4, terminal to server send connection request；
Step 5, server are received after the connection request of terminal, and server correspondence creates a new transmission thread and new
Receiving thread；
Step 6, terminal are by sending thread to server transmission packet；
The packet that step 7, server are sent by new receiving thread receiving terminal, and judge the communication link with terminal
Whether normal connect, the communication connection with terminal is normal if judging, into step 8, if judging abnormal with the communication connection of terminal,
The new transmission thread communicated with terminating machine is then terminated, this new receiving thread is then terminated, is then back to step 3；
The reply data bag that step 8, terminal are sent by receiving thread the reception server, and judge the communication with server
Whether connection is normal, if judging, the communication connection with server is normal, return to step 6, if judging the communication link with server
Connect abnormal, then return to step 4.
Embodiment
The network communication method of Auto-reconnect, comprises the following steps after the embodiment of the present invention disconnects：
Step 1, unlatching server；
Step 2, server wait the connection request of terminal；
Step 3, terminal create one and send thread and receiving thread；
Step 4, terminal to server send connection request；
Step 5, server are received after the connection request of terminal, and server correspondence creates a new transmission thread and new
Receiving thread；
Step 6, terminal are by sending thread to server transmission packet；
The packet that step 7, server are sent by new receiving thread receiving terminal, and judge the communication link with terminal
Whether normal connect, the communication connection with terminal is normal if judging, into step 8, if judging abnormal with the communication connection of terminal,
The new transmission thread communicated with terminating machine is then terminated, this new receiving thread is then terminated, is then back to step 3；
The reply data bag that step 8, terminal are sent by receiving thread the reception server, and judge the communication with server
Whether connection is normal, if judging, the communication connection with server is normal, return to step 6, if judging the communication link with server
Connect abnormal, then return to step 4.
In the above method, server is communicated with terminal using ICP/IP protocol.
It is specially in step 2：Server runs the connection request program of terminal, and the connection request program of terminal includes service
The port numbers that the IP address and server of device are specified.
In step 6 or step 7, packet heartbeat data packets and business data packet.
In step 6, terminating machine, will be at interval of time t to server when no business data packet is transmitted to server
End sends heartbeat packet, and time t size is arranged in advance by terminal with server end.
In step 7, server is received after the packet that terminal is sent every time, then sends corresponding response to terminal immediately
Packet.
In step 8, data answering core jumps response bag and business response bag.
Server judges whether the communication connection with terminal normally specifically includes in step 7：Server record last time
The time for receiving the packet that terminal is sent is T1, can basis according to server patient maximum the packet loss upper limit N, N value
Concrete condition is set, when current time is the T2 moment, if meeting (T2-T1)/t>N, then server judge itself and terminal
Communication connection is already off, if meeting (T2-T1)/t<=N, then server judgement is connected normally with terminal communication.
Terminal judges whether the communication connection with server normally specifically includes in step 8：Terminal record last time connects
The time for receiving the reply data bag that server end is sent is t1, can according to terminal patient maximum the packet loss upper limit n, n value
Set as the case may be, when current time is the t2 moment, if meeting (t2-t1)/t>N, then terminal judge itself and service
Device communication connection is already off, if meeting (t2-t1)/t<=n, then terminal judge that it is connected normally with server communication.
In practical application, terminating machine judges that the example with server network connection status is specially：
Assuming that the time interval that terminating machine sends heartbeat data packets is 5 seconds, the patient maximum packet loss upper limit of terminating machine is
3, the time that terminating machine last time receives the packet that server end is sent is 2017.2.26-15:36:25, then at the moment
2017.2.26-15:36:50 are the step of checking communication connection：
The first step, calculates the time interval that current time receives server end with last time：
T2-t1=(2017.2.26-15:36:50-2017.2.26-15:36:25)=25 (second)
Second step, calculates the packet loss quantity at t1 moment at moment t2：
(t2-t1)/t=5
3rd step, the maximum packet loss upper limit of packet loss quantity and terminal is compared, network connection state is analyzed：
5>3
In summary, the quantity of packet loss is more than terminal function and tolerates the maximum packet loss upper limit done, thus terminating machine judge with
The communication connection of server end is disconnected, and terminal, which needs to set up to server end re-request, to be connected.
The example that server is connected with the A network services of some terminating machine is specially：
Assuming that the time interval that terminating machine sends heartbeat data packets is 5 seconds, the patient maximum packet loss upper limit of server is
6, the time that server last time receives the packet that terminating machine A is sent is 2017.2.26-15:40:10, then at the moment
2017.2.26-15:40:The step of 40 server inspections are connected with terminating machine A network services be：
The first step, calculates current time with receiving time interval at the time of terminating machine A packets for the last time：
T2-T1=(2017.2.26-15:40:40-2 017.2.26-15:40:10)=30 (second)
Second step, calculates the packet loss quantity at T1 moment to T2 moment：
(T2-T1)/t=30/5=6
3rd step, the maximum packet loss upper limit of packet loss quantity and terminal is compared, network connection state is analyzed：
6=6
The quantity that server calculates packet loss is exactly equal to the maximum packet loss upper limit of server end, therefore at the T2 moment, takes
Business device still judges that its communication connection with terminating machine A is normal, but if is also confiscated after 5 seconds servers, terminating machine A
Packet, server can judge that itself and terminating machine A communication connection are to disconnect.
Claims (9)
1. the network communication method of Auto-reconnect after disconnecting, it is characterised in that comprise the following steps：
Step 1, unlatching server；
Step 2, server wait the connection request of terminal；
Step 3, terminal create one and send thread and receiving thread；
Step 4, terminal to server send connection request；
Step 5, server are received after the connection request of terminal, and server correspondence creates a new transmission thread and new and connect
Take-up journey；
Step 6, terminal are by sending thread to server transmission packet；
The packet that step 7, server are sent by new receiving thread receiving terminal, and judge that the communication connection with terminal is
No normal, if judging, the communication connection with terminal is normal, into step 8, if judging abnormal with the communication connection of terminal, eventually
The new transmission thread only communicated with terminating machine, then terminates this new receiving thread, is then back to step 3；
The reply data bag that step 8, terminal are sent by receiving thread the reception server, and judge the communication connection with server
Normally whether, if judging, the communication connection with server is normal, return to step 6, if judgement and the communication connection of server are not
Normally, then return to step 4.
2. the network communication method of Auto-reconnect after disconnection according to claim 1, it is characterised in that the server with
Terminal is communicated using ICP/IP protocol.
3. the network communication method of Auto-reconnect after disconnection according to claim 1, it is characterised in that specific in step 2
For：The server runs the connection request program of terminal, and the connection request program of the terminal includes the IP address of server
The port numbers specified with server.
4. the network communication method of Auto-reconnect after disconnection according to claim 1, it is characterised in that step 6 or step 7
In, the packet heartbeat data packets and business data packet.
5. the network communication method of Auto-reconnect after disconnection according to claim 4, it is characterised in that in step 6, terminal
Machine when no business data packet is transmitted to server, will at interval of time t to server end send heartbeat packet, the time
T size is arranged in advance by terminal with server end.
6. the network communication method of Auto-reconnect after disconnection according to claim 1, it is characterised in that in step 7, service
Device is received after the packet that terminal is sent every time, then sends corresponding reply data bag to terminal immediately.
7. the network communication method of Auto-reconnect after disconnection according to claim 1, it is characterised in that described in step 8
Data answering core jumps response bag and business response bag.
8. the network communication method of Auto-reconnect after disconnecting according to claim 1 or 5, it is characterised in that taken in step 7
Business device judges whether the communication connection with terminal normally specifically includes：Server record last time receives the number that terminal is sent
It is T1 according to the time of bag, can be set as the case may be according to server patient maximum the packet loss upper limit N, N value, is being worked as
When the preceding time is the T2 moment, if meeting (T2-T1)/t>N, then server judge that its communication connection with terminal is already off,
If meeting (T2-T1)/t<=N, then server judgement is connected normally with terminal communication.
9. the network communication method of Auto-reconnect after disconnecting according to claim 1 or 5, it is characterised in that in step 8 eventually
End judges whether the communication connection with server normally specifically includes：Terminal record last time receives what server end was sent
The time of reply data bag is t1, can be set as the case may be according to terminal patient maximum the packet loss upper limit n, n value,
When current time is the t2 moment, if meeting (t2-t1)/t>N, then terminal judge that it is connected already off with server communication,
If meeting (t2-t1)/t<=n, then terminal judge that it is connected normally with server communication.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108430116A (en) * | 2018-03-02 | 2018-08-21 | 杭州朗和科技有限公司 | Suspension reconnection method, medium, device and computing device |
| CN108667933A (en) * | 2018-05-11 | 2018-10-16 | 星络科技有限公司 | Device and communication system are established in connection method for building up, connection |
| CN109618012A (en) * | 2019-02-21 | 2019-04-12 | 腾讯科技（深圳）有限公司 | Establish the method, apparatus, terminal and storage medium of connection |
| CN114125575A (en) * | 2021-11-22 | 2022-03-01 | 深圳康佳电子科技有限公司 | Screen-casting disconnection judgment processing method and device, intelligent terminal and storage medium |
| TWI770646B (en) * | 2020-10-23 | 2022-07-11 | 遠傳電信股份有限公司 | Iot devices management system and iot devices management method |
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Application publication date: 20171107 |