CN102571775A - Server communication module, client communication module and network communication system - Google Patents
Server communication module, client communication module and network communication system Download PDFInfo
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- CN102571775A CN102571775A CN2011104451321A CN201110445132A CN102571775A CN 102571775 A CN102571775 A CN 102571775A CN 2011104451321 A CN2011104451321 A CN 2011104451321A CN 201110445132 A CN201110445132 A CN 201110445132A CN 102571775 A CN102571775 A CN 102571775A
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Abstract
The invention relates to a server communication module, a client communication module and a network communication system. The network communication system consists of the server communication module and the client communication module. Each of the server communication module and the client communication module comprises a data type conversion packaging unit, a data sending unit, a data receiving unit and a data type parsing unit. The data type conversion packaging unit converts the original type data into byte data and marks the byte data. The marked byte data is sent to one side that receives the data through the data sending unit. The data receiving unit receives the marked byte data sent by the side that sends the data. The data type parsing unit restores the byte data as the original type data through the mark. In the invention, the data of various types can be converted into byte data and the received byte data is restored as the original type data to meet the flexible data transmission demand between a server and a client.
Description
Technical field
The invention belongs to the network communications technology field, relate to a kind of server communication module, client communication module and network communication system.
Background technology
The transfer of data that Socket connects has realized the receiving and dispatching mechanism of network communication, and this mechanism can help our pass-along message and transceive data between client-server.In the prior art, data are that data flow transfinites easily when transmitting data by this way, thereby has produced dangerous with the byte mode transmission usually.And we usually use in send mode possibly hope flexibly relatively, possibly hope directly to send a structure.Also have because the network line reason causes unusually, want manual handle usually.
Summary of the invention
The technical problem that the present invention will solve provides a kind of server communication module based on the Socket connection that can satisfy user flexibility transmission demand.
In order to solve the problems of the technologies described above, server communication module of the present invention comprises server data type conversion encapsulation unit, server data transmitting element, server data receiving element, server data type resolution unit; Said server data type conversion encapsulation unit is the byte data row labels of going forward side by side with the initial form data transaction; The byte data of mark sends to client by the server data transmitting element; The server data receiving element receives the byte data of the mark of client transmission; The type of server resolution unit is reduced to the initial form data according to mark with byte data.
Another technical problem that the present invention will solve provides a kind of client communication module based on the Socket connection that can satisfy user flexibility transmission demand.
In order to solve the problems of the technologies described above, client communication module of the present invention comprises client data type conversion encapsulation unit, client data transmitting element, client data receiving element, client data type resolution unit; Said client data type conversion encapsulation unit is the byte data row labels of going forward side by side with the initial form data transaction; The byte data of mark sends to server by the client data transmitting element; The byte data of the mark that client data receiving element reception server sends; The client type resolution unit is reduced to the initial form data according to mark with byte data.
The 3rd technical problem that the present invention will solve provides a kind of network communication system based on the Socket connection that can satisfy user flexibility transmission demand.
In order to solve the problems of the technologies described above, network communication system of the present invention is made up of server communication module and client communication module; Said server communication module comprises server data type conversion encapsulation unit, server data transmitting element, server data receiving element, server data type resolution unit; Said server data type conversion encapsulation unit is the byte data row labels of going forward side by side with the initial form data transaction; The byte data of mark sends to client by the server data transmitting element; The server data receiving element receives the byte data of the mark of client transmission; The type of server resolution unit is reduced to the initial form data according to mark with byte data; The client communication module comprises client data type conversion encapsulation unit, client data transmitting element, client data receiving element, client data type resolution unit; Said client data type conversion encapsulation unit is the byte data row labels of going forward side by side with the initial form data transaction; The byte data of mark sends to server by the client data transmitting element; The byte data of the mark that client data receiving element reception server sends; The client type resolution unit is reduced to the initial form data according to mark with byte data.
Comprise multiple transmission interface function and multiple reception call back function in server communication module and the client communication module.These transmission interface functions can be byte data with polytype data transaction, send demand flexibly with respective user.Receive call back function and then can the byte data that receive be reduced to the initial form data.The present invention can satisfy between server and the client transfer of data demand flexibly.
Said server communication module comprises that also server sends protocol element and server protocol analysis unit; Send protocol element through the byte data of server data type conversion encapsulation unit mark by server and between mark and byte data, add data length according to communications protocol; After byte data, add check digit, send to client by the server data transmitting element then; Whether the byte data that the server data receiving element receives is correct according to the length and the check digit of communications protocol judgment data by the server protocol resolution unit, if correctly then according to mark byte data is reduced to the initial form data by the type of server resolution unit; Application resends if the size error of data or verification make mistakes then.
Said client communication module also comprises client transmission protocol element and client protocol resolution unit; Send protocol element through the byte data of client data type conversion encapsulation unit mark by client and between mark and byte data, add data length according to communications protocol; After byte data, add check digit, send to server by the client data transmitting element then; Whether the byte data that the client data receiving element receives is correct according to the length and the check digit of communications protocol judgment data by the client protocol resolution unit, if correctly then according to mark byte data is reduced to the initial form data by the client type resolution unit; Application resends if the size error of data or verification make mistakes then.
The present invention adds the protocol header that comprises data length before being employed in data, in the mode that the data tail adds CRC check, makes one of reception data enough judge through CRC check whether the data of sending make mistakes, thereby can ensure the transmission safety of data.
Said server communication module also comprises a heartbeat transmitter, and the heartbeat transmitter is after server and client side's successful connection, and T sends a piece of news to client with Fixed Time Interval.
Said client communication module comprises that also a heartbeat receiver and one reconnect the unit; The heartbeat receiver does not also receive the message that the heartbeat receiver sends at 2T in the time; Or client data transmitting element data are sent failure; Or the client data receiving element receives data failure, then judges to connect and breaks off, and calls to reconnect the unit and begin application and reconnect.
Said client communication module also comprises an overtime device; Pick up counting at server and the client overtime device in back that connects, the heartbeat receiver receive message that the heartbeat transmitter sends then overtime think highly of put; Do not reconnect the unit if overtime device does not also receive message then starts during to setting-up time, begin application and reconnect.
The mechanism of reconnecting is said client helps to rebulid connection when mistakes such as receive time-out or transmission failure are returned a kind of mechanism.After startup reconnects mechanism, client will be attempted Connection Service device again with fixed frequency.If successful connection then recover operate as normal is if repeatedly reconnect failure then return the failure error message.
Utilization of the present invention reconnects the unit to the abnormal conditions that network line causes, has provided a kind of treatment mechanism; Can ensure the robustness of communication system function.
Said server communication module also comprises server send mode selected cell; First sends data behavior also imperfect tense to server send mode selected cell in process of transmitting, the next one that arrives is sent data select to abandon and handle or add to set out and send formation.
Said client communication module also comprises client send mode selected cell; First sends data behavior also imperfect tense to client send mode selected cell in process of transmitting, the next one that arrives is sent data select to abandon and handle or add to set out and send formation.
Saidly abandon processing, when sending data, judge whether also not accomplish transmission exactly, if then directly jump out and return information.Interpolation is seted out and sent formation is that transmission information is added into formation, the data in the transmit queue of order.Formation need realize that first in first out guarantees that the order of data can be not random.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
Fig. 1 utilizes the present invention to realize the structural representation of network communication.
Fig. 2 is a network communication system structured flowchart of the present invention.
Fig. 3 is the communication modes sketch map of server communication module and client communication module.
Fig. 4 is a data flow graph of data communication between server communication module and the client communication module.
Fig. 5 is a transmit mechanism illustrated in detail flow chart.
Fig. 6 is a reception mechanism illustrated in detail flow chart.
Fig. 7 is the flow chart of heartbeat mechanism.
Embodiment does
As shown in Figure 1, server can connect a plurality of clients through network communication system of the present invention, and foundation interconnects.Network communication system is responsible for keeping and managing being connected of they as server and client side's middleware, and both do not provide service.The kind of service comprises takes the initiative in offering a hand and passive service.Wherein taking the initiative in offering a hand comprises initialization, sends and receive service.Passive service comprises protocol, heartbeat mechanism and reconnect mechanism.These mechanism have guaranteed the convenient and swift and fail safe of user when use is of the present invention.
As shown in Figure 2, network communication system of the present invention is made up of server communication module and client communication module.
Said server communication module comprises that server send mode selected cell, server data type conversion encapsulation unit, server send protocol element, server data transmitting element, server data receiving element, server protocol resolution unit, type of server resolution unit, heartbeat transmitter.First sends data behavior also imperfect tense to server send mode selected cell in process of transmitting, the next one that arrives is sent data select to abandon and handle or add to set out and send formation.Said server data type conversion encapsulation unit is the byte data row labels of going forward side by side with the initial form data transaction; The byte data of mark is sent protocol element by server and between mark and byte data, is added data length according to communications protocol, after byte data, adds check digit, sends to client by the server data transmitting element then; Whether the byte data that the server data receiving element receives is correct according to the length and the check digit of communications protocol judgment data by the server protocol resolution unit, if correctly then according to mark byte data is reduced to the initial form data by the type of server resolution unit; Application resends if the size error of data or verification make mistakes then.The heartbeat transmitter is after server and client side's successful connection, and T sends a piece of news to client with Fixed Time Interval.
Said client communication module comprises client send mode selected cell, client data type conversion encapsulation unit, client transmission protocol element, client data transmitting element, client data receiving element, client protocol resolution unit, client data type resolution unit, heartbeat receiver, overtime device, reconnects the unit.First sends data behavior also imperfect tense to client send mode selected cell in process of transmitting, the next one that arrives is sent data select to abandon and handle or add to set out and send formation.Client data type conversion encapsulation unit is the byte data row labels of going forward side by side with the initial form data transaction; The byte data of mark is sent protocol element by client and between mark and byte data, is added data length according to communications protocol, after byte data, adds check digit, sends to server by the client data transmitting element then; Whether the byte data that the client data receiving element receives is correct according to the length and the check digit of communications protocol judgment data by the client protocol resolution unit, if correctly then according to mark byte data is reduced to the initial form data by the client type resolution unit; Application resends if the size error of data or verification make mistakes then.The heartbeat receiver does not also receive the message that the heartbeat receiver sends at 2T in the time; Or client data transmitting element data are sent failure; Or the client data receiving element receives data failure, then judges to connect and breaks off, and calls to reconnect the unit and begin application and reconnect.Overtime device picks up counting after server and client connect, the heartbeat receiver receive message that the heartbeat transmitter sends then overtime think highly of put; Do not reconnect the unit if overtime device does not also receive message then starts during to setting-up time, begin application and reconnect.
As shown in Figure 3, the communication modes of said server communication module and client communication module mainly is divided into transmit mechanism, reception mechanism and heartbeat mechanism.These three kinds of mechanism have ensured the ease for use and the robustness of communication function.
Transmit mechanism and reception mechanism at first are described, with reference to figure 4.This is a data flow graph.The mode (we explain concrete selection mode after a while again) that the side that data are sent selects data to send earlier will encapsulate it with different processing modes respectively according to the data type of sending then.The meaning of said encapsulation be to type of data carry out that mark guarantees to receive one can be with its reduction.At last data are added agreement, agreement can ensure the transmission safety of data.Send the data to the recipient after adding agreement.The recipient is analysis protocol at first, and the data type information according to encapsulation unpacks data again.Obtain the data that receive at last.The overall process of the network communication module data communication that Here it is connects based on Socket.
Fig. 5 is a transmit mechanism illustrated in detail flow chart.Transmit leg can be selected send mode when sending, said send mode comprises the mode of abandoning and adds and advance the formation mode.This dual mode has satisfied quick and efficient two kinds of user demands respectively.When the mode of abandoning was launched, the user had imperfect tense sent data again in the previous data of transmission, and these data of transmission did not process after then transmit mechanism was selected to abandon.Can guarantee to send data like this and can not occur piling up, system response is quick.Launch second kind of interpolation when advancing the formation mode the user, same user has imperfect tense sent data again sending previous data, and then transmit mechanism can add back data in the into formation, and the data in the formation will be sent up to transmission successively and finished.System will obtain transmitting capacity more efficiently like this., send mode then can begin to send data after having selected.Send type of data and comprise the byte categorical data, wstring categorical data, 4 kinds of string categorical data and structure data.Transmit mechanism will encapsulate these four kinds of data types, forwardly the type of flag data and with data conversion for can send data type.During transmission, at first add protocol header, comprise data type mark and data length; Add CRC check in data trailer then.The CRC check here is that all data that comprise data protocol head (length of data type and data) are carried out verification.
This transmission of 4 types has their reception call back function of correspondence respectively, and it is handled respectively.This treatment mechanism is accomplished through said protocol and is judged that type is judged user transparent during reception.
Fig. 6 is a reception mechanism illustrated in detail flow chart.Receive data side and when receiving data, receive protocol header earlier, and parse the length of data.Length according to data receives data afterwards.Begin to judge CRC check after finishing receiving, if just mistake apply for from sending out.If the CRC check success, just the data that receive are carried out restoring data according to data type.Obtain data result at last.
Heartbeat mechanism is a kind of selection door opening mechanism, and promptly the user can select whether to open this function, and the effect of heartbeat mechanism is a connection status of guaranteeing said server and said client.If open this with ability; After said server and said client successful connection; The server of telling will begin to send a piece of news with Fixed Time Interval (we are referred to as heart time with this time interval) to told client, and the type of this message is the heartbeat type.Explain that connection status is normal if client is received the heartbeat kind of message, also do not receive message in the heart time, then judge to connect and break off if client is told 2 times institute.Client then begins application and reconnects.
Heartbeat mechanism is a kind of selection door opening mechanism, and promptly the user can select whether to open this function, and the effect of heartbeat mechanism is a connection status of guaranteeing the server and client side.If open this with ability, after server and client side's successful connection, server will begin to send a piece of news with Fixed Time Interval (we are referred to as heart time with this time interval) to client, and the type of this message is the heartbeat type.Explain that connection status is normal if client is received the heartbeat kind of message,, then judge to connect and break off if client does not also receive message in 2 times heart time.Client then begins application and reconnects.
Fig. 7 is the flow chart of heartbeat mechanism.Server then can send heartbeat data to client after connect setting up, heartbeat data is made up of the data of set form, state information that wherein can package server.The transmission of heartbeat is sent according to Fixed Time Interval T continuously, till connecting interruption.Client begins to receive heartbeat after connecting foundation, continue to receive if the reception heartbeat is successful, till the active decoupling.If receive heartbeat timeout or do not receive then to be judged as network unusual and apply for Connection Service device again.
Claims (10)
1. a server communication module is characterized in that comprising server data type conversion encapsulation unit, server data transmitting element, server data receiving element, server data type resolution unit; Said server data type conversion encapsulation unit is the byte data row labels of going forward side by side with the initial form data transaction; The byte data of mark sends to client by the server data transmitting element; The server data receiving element receives the byte data of the mark of client transmission; The type of server resolution unit is reduced to the initial form data according to mark with byte data.
2. server communication module according to claim 1 is characterized in that also comprising that server sends protocol element and server protocol analysis unit; Send protocol element through the byte data of server data type conversion encapsulation unit mark by server and between mark and byte data, add data length according to communications protocol; After byte data, add check digit, send to client by the server data transmitting element then; Whether the byte data that the server data receiving element receives is correct according to the length and the check digit of communications protocol judgment data by the server protocol resolution unit, if correctly then according to mark byte data is reduced to the initial form data by the type of server resolution unit; Application resends if the size error of data or verification make mistakes then.
3. server communication module according to claim 1 is characterized in that also comprising a heartbeat transmitter, and the heartbeat transmitter is after server and client side's successful connection, and T sends a piece of news to client with Fixed Time Interval.
4. client communication module according to claim 1 is characterized in that said server communication module also comprises server send mode selected cell; First sends data behavior also imperfect tense to server send mode selected cell in process of transmitting, the next one that arrives is sent data select to abandon and handle or add to set out and send formation.
5. a client communication module is characterized in that comprising client data type conversion encapsulation unit, client data transmitting element, client data receiving element, client data type resolution unit; Said client data type conversion encapsulation unit is the byte data row labels of going forward side by side with the initial form data transaction; The byte data of mark sends to server by the client data transmitting element; The byte data of the mark that client data receiving element reception server sends; The client type resolution unit is reduced to the initial form data according to mark with byte data.
6. client communication module according to claim 5 is characterized in that also comprising client transmission protocol element and client protocol resolution unit; Send protocol element through the byte data of client data type conversion encapsulation unit mark by client and between mark and byte data, add data length according to communications protocol; After byte data, add check digit, send to server by the client data transmitting element then; Whether the byte data that the client data receiving element receives is correct according to the length and the check digit of communications protocol judgment data by the client protocol resolution unit, if correctly then according to mark byte data is reduced to the initial form data by the client type resolution unit; Application resends if the size error of data or verification make mistakes then.
7. client communication module according to claim 5 is characterized in that also comprising that a heartbeat receiver and one reconnect the unit; The heartbeat receiver does not also receive the message that the heartbeat receiver sends at 2T in the time; Or client data transmitting element data are sent failure; Or the client data receiving element receives data failure, then judges to connect and breaks off, and calls to reconnect the unit and begin application and reconnect.
8. client communication module according to claim 7 is characterized in that also comprising an overtime device; Pick up counting at server and the client overtime device in back that connects, the heartbeat receiver receive message that the heartbeat transmitter sends then overtime think highly of put; Do not reconnect the unit if overtime device does not also receive message then starts during to setting-up time, begin application and reconnect.
9. client communication module according to claim 5 is characterized in that said client communication module also comprises client send mode selected cell; First sends data behavior also imperfect tense to client send mode selected cell in process of transmitting, the next one that arrives is sent data select to abandon and handle or add to set out and send formation.
10. a network communication system is characterized in that being made up of server communication module and client communication module; Said server communication module comprises server data type conversion encapsulation unit, server data transmitting element, server data receiving element, server data type resolution unit; Said server data type conversion encapsulation unit is the byte data row labels of going forward side by side with the initial form data transaction; The byte data of mark sends to client by the server data transmitting element; The server data receiving element receives the byte data of the mark of client transmission; The type of server resolution unit is reduced to the initial form data according to mark with byte data; The client communication module comprises client data type conversion encapsulation unit, client data transmitting element, client data receiving element, client data type resolution unit; Said client data type conversion encapsulation unit is the byte data row labels of going forward side by side with the initial form data transaction; The byte data of mark sends to server by the client data transmitting element; The byte data of the mark that client data receiving element reception server sends; The client type resolution unit is reduced to the initial form data according to mark with byte data.
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| CN104503801A (en) * | 2014-12-30 | 2015-04-08 | 北京奇虎科技有限公司 | Software updating instruction distributing method, communication server and terminal device |
| CN105959827A (en) * | 2016-04-22 | 2016-09-21 | 深圳市茁壮网络股份有限公司 | Data interaction method, set top box, and front-end server |
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| CN114257645A (en) * | 2021-11-23 | 2022-03-29 | 北京谊安医疗系统股份有限公司 | Embedded modular communication system and communication method thereof |
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Application publication date: 20120711 |