CN103516673A - Network data communication method, network data communication system, network data communication client and network data communication server - Google Patents
Network data communication method, network data communication system, network data communication client and network data communication server Download PDFInfo
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Abstract
The invention discloses a network data communication method, a network data communication system, a network data communication client and a network data communication server. The system comprises the client and the server, wherein communication connection is established between the client and the server. The client sends a request to the server, wherein the request contains a unique identifier thereof; the server prepares response data corresponding to the request after receiving the request, wherein the response data contains the unique identifier of the request, and the server immediately returns the response data to the client initiating the request after preparing the response data; and after receiving the response data, the client matches a corresponding request according to the unique identifier contained in the response data and processes the response data by taking the response data as the response data of a matched request. With the network data communication method, the network data communication system, the network data communication client and the network data communication server, the downlink transmission delay of a network can be reduced, and the downlink transmission rate can be improved.
Description
Technical field
The present invention relates to technical field, relate in particular to a kind of network data communication method, system and client and server.
Background technology
In the communication technology of the Internet, between client and server, conventionally adopt HTTP (HTTP) to send and receive information on the internet to communicate alternately at present.
HTTP is an OO communication protocol that belongs to application layer, because it is simple and direct, mode fast, is applicable to distributed Hypermedia Information System.It proposed in nineteen ninety, through use and development in a few years, was constantly improved and expanded.Internet use is that version is HTTP/1.1 at present.
(RFC, the Request For Comments) document that requests for comments has comprised the nearly all important technical data about the Internet.The pipelining of HTTP is disclosed in disclosed HTTP/1.1 version in RFC2616 document, that is: support the client that continues to connect to send request in the mode of streamline, that is to say a communication connection, for example, at a transmission control protocol (TCP, Transmission Control Protocol) in connection, client need not just can send a plurality of requests by wait-for-response, server must return to response by the order that receives request, client judges it is the response data of which request according to the order that receives response, n the response data receiving is exactly the response data of n the request sending.
There are the following problems for prior art scheme: server must send response by the order that receives request, but concerning server, for each received request, the time of preparing response data is not necessarily identical.What for example some request needed is dynamic resource data, need to carry out such as data query or generate the operations consuming time such as dynamic data or picture compression conversion being just ready to response data, some dynamic resource data also needs the server operation such as further pack, therefore for these requests, it is longer that server returns to the corresponding delay meeting responding; And the just static data that some request needs, server only need to return to static data, and therefore for these requests, it is shorter that server returns to the delay of corresponding response.If server must sequentially return to corresponding response data by the reception of request, can cause longer downstream propagation delay, affect the overall downlink transfer speed of network.
For example, Fig. 1 is the server process request of existing HTTP pipelining and the sequential chart that sends response data.Suppose that between client and server, having set up a TCP is connected, in this TCP connection, a plurality of requests have been sent successively to server, for example Figure 1 shows that 3 requests, the request of being respectively 1, ask 2 and ask 3, conventionally these 3 the packaged transmissions of request, server receives after packet according to the sending order of request and parses successively request 1, asks 2 and ask 3, and the order that server receives request is followed successively by: ask 1, ask 2 and ask 3.Suppose that request 1 needs server to carry out time-consuming operation, operations such as data query or generation dynamic data or picture compression conversion, supposes that this time-consuming operation postpones 2 seconds (s) at server; Thereby other request is all just asked static data server can postpone operation and is directly ready to response data.According to existing HTTP pipelining, in the transmit queue of server, need to return to successively according to the order that receives request response data corresponding to (sending to client), that is to say and first send request 1 response data (suppose herein server return to the response time used be all 1 second), send request again afterwards 2 response data (time used is also 1 second), send request again afterwards 3 response data (time used is also 1 second).Finally, these 3 requests are sent corresponding all response datas to server from arriving server, overall consuming time is 5 seconds, wherein there is the serviced device of delay of 2 seconds to slattern, therefore, the overall downstream propagation delay of prior art in the communication transmission process of the Internet is longer, and overall downlink transfer speed is slow.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of network data communication method, system and client and server, to reduce the downstream propagation delay of network, promotes downlink transfer speed.
Technical scheme of the present invention is achieved in that
, comprising:
Client and server establish a communications link;
User end to server sends request, and described request comprises the uniqueness sign of this request;
Server is received after request, prepares this and asks corresponding response data, and this response data comprises the uniqueness sign of this request, after being ready to response data, returns to this response data immediately to the client of initiating request;
Described client is received after response data, according to described uniqueness included in this response data, identifies to mate corresponding request, and this response data is processed as the response data of the request matching.
A system, comprises client and server, wherein:
Described client is used for: establish a communications link with described server, send request and receive the response data of described server based on this communication connection to described server; Described request comprises the uniqueness sign of this request; After receiving response data, according to uniqueness included in this response data, identify to mate corresponding request, this response data is processed as the response data of the request matching;
Described server is used for: establish a communications link with described client, based on this communication connection, receive the request of described client and return to response data; In the request of receiving described client, prepare afterwards this and ask corresponding response data, this response data comprises the uniqueness sign of this request, after being ready to response data, returns to this response data immediately to the client of initiating request.
A client, comprising:
Module is set up in communication connection, for establishing a communications link with server;
Request sending module, for sending request to described server based on described communication connection, described request comprises the uniqueness sign of this request;
Response receiver module, for receiving the response data of described server based on described communication connection; After receiving response data, according to uniqueness included in this response data, identify to mate corresponding request, this response data is processed as the response data of the request matching.
A server, comprising:
Module is set up in communication connection, for establishing a communications link with described client;
Request receiving module, for receive the request of described client based on described communication connection, and prepare this and ask corresponding response data, this response data comprises the uniqueness sign of this request, gives immediately described response sending module after being ready to response data;
Response sending module, for returning to response data to the client of initiating request.
Compared with prior art, client of the present invention sends to the request of server to comprise uniqueness ID, at server, receiving after the request of client, needn't return to response data according to the order that receives request, what a but as long as prepare response data just return in time, client is mated corresponding request according to the uniqueness ID in response data, thereby avoided the downstream propagation delay causing due to the time-consuming operation that indivedual requests are processed, can reduce the downstream propagation delay of network in general, promote the downlink transfer speed of network in general.
Accompanying drawing explanation
Fig. 1 is the server process request of existing HTTP pipelining and the sequential chart that sends response data;
Fig. 2 is a kind of flow chart of network data communication method of the present invention;
Fig. 3 is the interaction diagrams of a kind of specific embodiment of the method for the invention;
Fig. 4 is server process request of the present invention and the sequential chart that sends response data;
Fig. 5 is the composition schematic diagram of a kind of embodiment of network data communication system of the present invention;
Fig. 6 is the composition schematic diagram of another embodiment of network data communication system of the present invention.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is further described in more detail.
Fig. 2 is a kind of flow chart of network data communication method of the present invention.Referring to Fig. 2, method of the present invention mainly comprises:
201, client and server establish a communications link;
202, user end to server sends request, and described request comprises the uniqueness sign of this request;
203, server is received after request, prepares this and asks corresponding response data, and this response data comprises the uniqueness sign of this request, after being ready to response data, returns to this response data immediately to the client of initiating request;
204, described client is received after response data, according to the uniqueness of request included in this response data, identifies to mate corresponding request, and this response data is processed as the response data of the request matching.
Mechanism due to network data communication employing layered communication, in a kind of specific embodiment, communication connection of the present invention is that transport layer protocol in network data communication connects, request and response data that described request and response data are the application layer communication protocol that is connected based on this transport layer protocol.As for lower floor's communication modes such as network layer, data link layer, physical layers, can adopt the known technical scheme of industry, repeat no more herein.
More specifically, described transport layer protocol connects can be for transmission control protocol (TCP) connects, and described application layer communication protocol can be HTTP (HTTP).The HTTP data communication that connects based on TCP of take below further illustrates the solution of the present invention as example.For the technical scheme of existing http protocol streamline order, the present invention proposes the unordered technical scheme of returning to response.But the present invention is also not limited to TCP and HTTP, for other the existing communication agreement that has similar defect, the present invention can be suitable for equally.
Fig. 3 is the interaction diagrams of a kind of specific embodiment of the method for the invention.Referring to Fig. 3, this flow process comprises:
Between step 301, client and server, setting up TCP is connected.Process of establishing is that Transmission Control Protocol completes establishment of connection by three message segments, this process is called three-way handshake (three-way handshake) and sets up the process that TCP connects, concrete process of establishing can, referring to the known technical scheme of industry, repeat no more herein.
Step 302, user end to server send a plurality of requests, for example, Figure 3 shows that user end to server has sent 3 requests, ask 1, ask 2 and ask 3; In sending the process of a plurality of requests, in a head uniqueness sign of increase (ID) of each request, for being different from other request connecting based on current TCP, and at client terminal local record, sending request the described uniqueness ID of correspondence.When concrete transmission, client can be packaged in described 3 requests to send to together described server.
For example described request is HTTP request in the present embodiment, the ID(that can increase at the HTTP head of HTTP request so a uniqueness can be for example a sequence number, for example asking 1 described uniqueness ID is 0001, the described uniqueness ID of request 2 is 0002, the described uniqueness ID of request 3 is 0003), the ID of this uniqueness is only unique in current TCP connects.If also set up other TCP between client and server, connect 2,, in this other TCP connects 2, the uniqueness ID that the head of each request increases need to be only unique in this TCP connects 2.
Step 303, server are received described to parsing successively request 1, ask 2 and ask 3 according to the sending order of request after packet, and the order that server receives request is followed successively by: ask 1, ask 2 and ask 3.After receiving each request, server is prepared this according to the content of this request and is asked corresponding response data, the process of preparing response data for each request can be parallel processing, needn't carry out according to the order that receives request, the delay of preparing response data has the long section of having, but the head of described response data all needs to comprise the uniqueness ID of corresponding requests, for example ask the head of 1 response data will comprise the uniqueness ID(0001 of this request 1), this uniqueness ID is exactly the uniqueness ID comprising in the head in request 1.After the response data of what a request of the every preparation of server, return to immediately this response data to the client of initiating request, needn't return to corresponding response data according to the order that receives request.Server is that ready response data is passed in the transmit queue of server in the specific implementation, by transmit queue, sends response data.
The order in described transmit queue according to response data of step 304, server is returned to described response data to client successively.Because response datas all in transmit queue is all ready response data, transmit queue can send response data one by one.Like this, server returns to the response data of a plurality of requests and just need to not return according to the order that receives request, only need to send as soon as possible ready response data, during do not exist the response data of a request to wait for the processing delay of another request and the delay waste that causes.
Be illustrated in figure 4 the sequential chart of server process request of the present invention and transmission response data.Referring to Fig. 4, suppose that the order that server receives request is followed successively by: ask 1, ask 2 and ask 3.Suppose that these three requests are identical with three requests described in Fig. 1, wherein ask 1 to need server to carry out time-consuming operation, operations such as data query or generation dynamic data or picture compression conversion, supposes that this time-consuming operation postpones 2 seconds (s) at server; Thereby other two requests all just ask static data server can carry out delay operation consuming time.Suppose that server all set asks 2 needed response datas at first herein, this response data is passed to transmit queue, all set ask afterwards 3 needed response datas that this response data is passed to transmit queue, after postponing 2 seconds, all set ask 1 needed response data and this response data is passed to transmit queue.Identical with Fig. 1, hypothesis transmission each response data time used is also 1 second herein, as described in Figure 4, finally, these 3 requests are sent corresponding all response datas to server from arriving server, and overall consuming time is 3 seconds, wherein in 2 seconds deferring procedures of the response data of preparation request 1, therefore sent and asked 2 and the response data of request 3 correspondences, with respect to prior art, saved the downstream propagation delay of 2 seconds, therefore improved overall downlink transfer speed.
Step 305, described client are received after response data, according to described uniqueness ID included in this response data, mate corresponding request, and this response data is processed as the response data of the request matching.For example, after the response data 2 of the request of receiving 2, extract uniqueness ID that this response data 2 comprises as 0002, the list of the uniqueness ID sending request that contrast is stored, mate the uniqueness ID identical with this uniqueness ID 0002, obtaining asking 2 uniqueness ID is also 0002, judge that this response data 2 asks the response data of 2 correspondences as this, and carry out follow-up processing, such as showing that in webpage described response data etc. processes operation.
From the above mentioned, client of the present invention sends to the request of server to comprise uniqueness ID, at server, receiving after the request of client, needn't return to response data according to the order that receives request, what a but as long as prepare response data just return in time, client needn't be according to order, but mate corresponding request according to the uniqueness ID in response data, thereby the downstream propagation delay of having avoided server to cause due to the time-consuming operation that indivedual requests are processed, can reduce the downstream propagation delay of network in general, promote the downlink transfer speed of network in general.
In addition, in prior art, also has a shortcoming, that is: as shown in Figure 1, if server is too busy or process mistake, cause described request 1 that abnormal obstruction has occurred, client does not receive that within the time of predetermining request 1 response data can disconnect this TCP and connect (this please also can be called briefly overtime disconnection communication connection), thereby can make other two requests (ask 2 and request 3) all be abandoned, so the fault-tolerance of prior art is also poor.
In order to improve the fault-tolerance of network service, in another embodiment of the invention, in client and server, establish a communications link after foundation, further comprise:
If there is extremely to cause disconnecting described communication connection, described client is determined current request of also not receiving response data, retransmit these requests, so-called re-transmission: re-establish communication connection with server, and the request of not receiving response data described in resending to server, follow-up process with described step 303 to step 305.For example, according to the uniqueness ID in response data, check the uniqueness ID of preserved request, corresponding response data is not received in which request, determine this request that retransmits, if also do not receive the response data of all requests after re-transmission, redefine again current request of not receiving response data, and again retransmit these requests.But, can stipulate the upper limit number of times of re-transmission, if reach this upper limit number of times, still do not receive all response datas, abandon retransmitting.Example as shown in Figure 4, if there is abnormal obstruction in described request 1, the response data of the client request of not receiving within the time of predetermining 1 can disconnect current TCP and connect, now because the response data of other two requests (ask 2 and request 3) is all received, therefore only need to re-establish communication connection, only repeat requests 1, reduced the number of repeat requests, so the present invention can improve the fault-tolerance of network service significantly.
Client of the present invention can be but be not limited to: web browser and other can be connected with server the client of communication.Described client can be but the client that is not limited to be arranged on the client of mobile terminal and is arranged on (PC) on personal computer.Described mobile terminal can be for example smart mobile phone, personal digital assistant device (PDA, Personal Digital Assistant), handheld computer (Pocket PC), panel computer etc.Described personal computer such as desktop computer, notebook computer etc.
Especially, it in described client, is the client that is arranged on mobile terminal, and in the enforcement scene communicating by communication between described client and server, restriction due to the computing capability of mobile terminal own and cordless communication network communication capacity, the quantity of the communication connection of therefore setting up between client and server is just more in short supply, therefore the client on this mobile terminal often needs to send plural request based on a communication connection, to make full use of this communication connection resource in short supply.In the application scenarios of this radio communication, because the quantity of the request of carrying in a communication connection and response is more, if utilize the pipelining of prior art, described downstream propagation delay problem long, that downlink transfer speed is slow and fault-tolerance is poor can be more outstanding.Therefore, the present invention is particularly useful in the application scenarios of radio communication, in the request of carrying in a communication connection and a fairly large number of situation of response, server needn't return to response data according to the order that receives request, what a but as long as prepare response data just return in time, client is mated corresponding request according to the uniqueness ID in response data, thereby can significantly promote the network downlink transfer speed in wireless communications application scene, reduce downstream propagation delay, once and occur extremely to cause communication connection to interrupt, only resend the request of not receiving response data, improved the fault-tolerance of data communication.
Fig. 5 is the composition schematic diagram of a kind of embodiment of network data communication system of the present invention.This network data communication system is used for carrying out said method of the present invention.Referring to Fig. 5, this system comprises client 501 and server 502, wherein:
Described client 501 for: establish a communications link with described server 502, based on this communication connection, to described server 502, send request and receive the response data of described server 502; Described request comprises the uniqueness sign of this request; After receiving response data, according to uniqueness included in this response data, identify to mate corresponding request, this response data is processed as the response data of the request matching;
Described server 502 for: establish a communications link with described client 501, the request that receives described client 501 based on this communication connection is also returned to response data; In the request of receiving described client 501, prepare afterwards this and ask corresponding response data, this response data comprises the uniqueness sign of this request, after being ready to response data, returns to this response data immediately to the client 501 of initiating request.
Wherein, described communication connection is that transport layer protocol in network data communication connects, request and response data that described request and response data are the application layer communication protocol that is connected based on this transport layer protocol.More specifically, described transport layer protocol is connected to TCP and connects, and described application layer communication protocol is HTTP.
The present invention is particularly useful in the application scenarios of radio communication, and, in a kind of preferred embodiment, described client is the client that is arranged on mobile terminal, between described client and server, by communication, communicates.
Certainly, client of the present invention is also not limited to install the client of mobile terminal, can be to be also not limited to be arranged on client on personal computer etc., and the communication mode between described client and server can be also the mode of wire communication.
As shown in Figure 5, the client 501 of described network data communication specifically comprises:
Module 511 is set up in communication connection, for establishing a communications link with server, as sets up TCP connection;
Request sending module 512, for sending request to described server 502 based on described communication connection, described request comprises the uniqueness sign of this request;
The server 502 of described network data communication specifically comprises:
Module 521 is set up in communication connection, for establishing a communications link with described client 501, specifically sets up module 511 with described communication connection and shakes hands to establish a communications link;
Request receiving module 522, for receive the request of described client based on described communication connection, and prepare this and ask corresponding response data, this response data comprises the uniqueness sign of this request, gives immediately described response sending module 523 after being ready to response data;
Concrete, in described response sending module 523, specifically comprise transmit queue; Described response sending module 523 imports this transmit queue into specifically for being ready to response data, and the order according to response data in this transmit queue is returned to response data to the client 501 of initiating request successively.
Fig. 6 is the composition schematic diagram of another embodiment of network data communication system of the present invention.In this embodiment, described client 501 can further include:
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (14)
1. a network data communication method, is characterized in that, comprising:
Client and server establish a communications link;
User end to server sends request, and described request comprises the uniqueness sign of this request;
Server is received after request, prepares this and asks corresponding response data, and this response data comprises the uniqueness sign of this request, after being ready to response data, returns to this response data immediately to the client of initiating request;
Described client is received after response data, according to described uniqueness included in this response data, identifies to mate corresponding request, and this response data is processed as the response data of the request matching.
2. method according to claim 1, it is characterized in that, the method further comprises: after client and server establish a communications link, if there is extremely to cause disconnecting described communication connection, described client is determined current request of not receiving response data, and re-establish communication connection with server, and the request of not receiving response data described in only resending to server.
3. method according to claim 1, is characterized in that, described communication connection is that transport layer protocol in network data communication connects, request and response data that described request and response data are the application layer communication protocol that is connected based on this transport layer protocol.
4. method according to claim 3, is characterized in that, described transport layer protocol is connected to transmission control protocol TCP and connects, and described application layer communication protocol is HTTP HTTP.
5. method according to claim 1, is characterized in that, described client is the client that is arranged on mobile terminal, between described client and server, by communication, communicates.
6. method according to claim 1, it is characterized in that, described client of asking to initiation immediately after being ready to response data is returned to response data, be specially: after being ready to response data, response data is passed to the transmit queue of server, the order according to response data in this transmit queue is returned to response data to the client of initiating request successively.
7. a network data communication system, is characterized in that, comprises client and server, wherein:
Described client is used for: establish a communications link with described server, send request and receive the response data of described server based on this communication connection to described server; Described request comprises the uniqueness sign of this request; After receiving response data, according to uniqueness included in this response data, identify to mate corresponding request, this response data is processed as the response data of the request matching;
Described server is used for: establish a communications link with described client, based on this communication connection, receive the request of described client and return to response data; In the request of receiving described client, prepare afterwards this and ask corresponding response data, this response data comprises the uniqueness sign of this request, after being ready to response data, returns to this response data immediately to the client of initiating request.
8. system according to claim 7, is characterized in that, described communication connection is that transport layer protocol in network data communication connects, request and response data that described request and response data are the application layer communication protocol that is connected based on this transport layer protocol.
9. system according to claim 8, is characterized in that, described transport layer protocol is connected to transmission control protocol TCP and connects, and described application layer communication protocol is HTTP HTTP.
10. system according to claim 7, is characterized in that, described client is the client that is arranged on mobile terminal, between described client and server, by communication, communicates.
11. 1 kinds of network data communication clients, is characterized in that, comprising:
Module is set up in communication connection, for establishing a communications link with server;
Request sending module, for sending request to described server based on described communication connection, described request comprises the uniqueness sign of this request;
Response receiver module, for receiving the response data of described server based on described communication connection; After receiving response data, according to uniqueness included in this response data, identify to mate corresponding request, this response data is processed as the response data of the request matching.
12. clients according to claim 11, is characterized in that, this client further comprises:
Retransmission module, be used for judging whether occurring extremely to cause disconnecting described communication connection, if it is determine current request of not receiving response data, notify described communication connection to set up module and server re-establishes communication connection, the request of not receiving response data described in notice described request sending module only resends to server.
13. 1 kinds of network data communication servers, is characterized in that, comprising:
Module is set up in communication connection, for establishing a communications link with described client;
Request receiving module, for receive the request of described client based on described communication connection, and prepare this and ask corresponding response data, this response data comprises the uniqueness sign of this request, gives immediately described response sending module after being ready to response data;
Response sending module, for returning to response data to the client of initiating request.
14. servers according to claim 13, is characterized in that, in described response sending module, specifically comprise transmit queue; Described response sending module imports this transmit queue into specifically for being ready to response data, and the order according to response data in this transmit queue is returned to response data to the client of initiating request successively.
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