CN102752320B - Proxy server active compression method and proxy server - Google Patents
Proxy server active compression method and proxy server Download PDFInfo
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- CN102752320B CN102752320B CN201210275177.3A CN201210275177A CN102752320B CN 102752320 B CN102752320 B CN 102752320B CN 201210275177 A CN201210275177 A CN 201210275177A CN 102752320 B CN102752320 B CN 102752320B
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Abstract
The invention discloses a proxy server active compression method. The method includes receiving data from a website, determining whether response headers are in receiving or not, if the response headers are in receiving, enabling received data to serve as the response headers to be temporarily stored, determining whether the receiving of the response headers is completed or not, if the receiving of the response headers is not completed, continuing receiving data from the website, if the receiving of the response headers is completed, determining whether the response headers comprise blocking transmission code instructions or not, if the response headers do not comprise blocking transmission coded instructions, compulsively subjecting the response headers to a blocking transmission coding operation, adding entity coding instructions in the response headers, storing the data in a compressed buffer memory and sending the data to a client, if the response headers comprise blocking transmission code instructions, storing the data in the compressed buffer memory and sending the data to the client, if the response headers are not in receiving, compressing the data of a local block response body, storing the data in the compressed buffer memory and sending the data to the client, determining whether the receiving of all response bodies is completed or not according to the length of all response bodies in the response headers or a blocking transmission coding operation mark, if the receiving of all response bodies is completed, closing the connection and finishing, and if the receiving of all response bodies is not completed, continuing receiving data from the website. A proxy server is further disclosed.
Description
Technical field
The present invention relates to data compression technique, refer to a kind of proxy server active compression method and proxy server especially.
Background technology
Under the environment of mobile Internet, the transmission delay between user terminal (as mobile phone, panel computer, 3G card of surfing Internet etc.) and backbone network is usually comparatively large, and larger network delay can cause user's networking speed slow, affects Consumer's Experience.
When cannot solve transmission delay in a short time, if transferring content can be carried out Lossless Compression, also will bring very large lifting to user's networking speed.
Browser (as IE, chrome, firefox etc.) is under HTTP (as http1.1 agreement), and for contents such as webpages, proxy server can ask common data compression (as gzip compression) usually; And if this compress mode is not supported in website, the problem that cannot respond compression request will be caused; And then cause the increase of user's transmitted data amount, waste bandwidth.
Summary of the invention
In view of this, the object of the invention is to propose a kind of proxy server active compression method and proxy server, improve network speed largely.
Based on above-mentioned purpose a kind of proxy server active compression method provided by the invention, comprising:
Data are received from website;
Judge whether to receive head response;
If receive head response, then by the data received responsively head keep in, and judge whether head response receives; If head response does not receive, then continue to receive data from website; If head response receives, then judge whether head response comprises block transmission coded command, if head response does not comprise block transmission coded command, head response is then forced to be set to block transmission encoding operation, and in head response, add entity coding instruction, and data are saved in compressed cache and mail to client; If head response comprises block transmission coded command, then data be saved in compressed cache and mail to client;
If not receive head response, then the data of this block response body are compressed, and data are saved in compressed cache and mail to client;
Judge all whether response body finishes receiving according to the whole response body length in head response or block transmission encoding operation mark, if so, then close and connect and terminate; If not, then continue to receive data from website.
In one embodiment, described subsequent processing steps also comprises:
Before closedown connects and terminates, refresh operation is carried out to compressed cache.
In another embodiment, the described step judging whether head response receives comprises:
Judge whether to receive 2 special identifier symbols, if so, then think that head response receives.
In another embodiment, described special identifier symbol for r n.
Present invention also offers a kind of proxy server, comprising:
Receiver module, for receiving data from website, and judges whether data are head response; If receive head response, then by the data received responsively head keep in, and judge whether head response receives; If head response does not receive, then described receiver module continues to receive data from website; If head response receives, then data are mail to head response processing module;
Head response processing module, for judging whether head response comprises block transmission coded command, if head response does not comprise block transmission coded command, then force head response to be set to block transmission encoding operation, and in head response, add entity coding instruction, then data are mail to sending module; If head response comprises block transmission coding, then direct data are mail to sending module;
Data, for compressing the data of this block response body, are then mail to sending module by compression module;
According to the whole response body length in head response or block transmission encoding operation mark, sending module, for data being saved in compressed cache and mailing to client, and judges all whether response body finishes receiving, if so, then closes and connect and terminate; If not, then described receiver module continues to receive data from website.
In one embodiment, described sending module also for before closedown connects and terminates, carries out refresh operation to compressed cache.
As can be seen from above, a kind of proxy server active compression method provided by the invention and proxy server, by proxy server in the downloading data of website, compress data simultaneously, greatly save bandwidth; And the data after compression preserved by described proxy server in compressed cache, time later each client asks this packed data, can quickly call from compressed cache and directly provide, reduce the consumption of CPU; And improve network speed largely.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of proxy server active compression method embodiment 1 that the present invention proposes;
Fig. 2 is the flow chart of a kind of proxy server active compression method embodiment 2 that the present invention proposes.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
With reference to figure 1, it is the flow chart of a kind of proxy server active compression method embodiment 1 that the present invention proposes.
1 illustrated embodiment flow chart with reference to the accompanying drawings, a kind of proxy server active compression method provided by the present invention, comprising:
Step 101: start;
Step 102: receive data from website;
Step 103: judge whether to receive head response (header);
Step 104: if receiving head response (header), then by the data that receive responsively head (header) keep in;
Step 105: judge whether head response (header) receives; If head response (header) does not receive, then continue to jump to step 102;
Step: 106: if head response (header) receives, then judge whether head response comprises block transmission coded command (Chunked); If head response comprises block transmission coded command (Chunked), then jump to step 110;
Step 107: if head response does not comprise block transmission coded command (Chunked), then force head response to be set to block transmission encoding operation (Chunked);
Step 108: add entity coding instruction (Content-Encoding:gzip) in head response, and jump to step 110;
Step 109: if not receiving head response (header), then compress the data of this block response body (body);
Step 110: data be saved in compressed cache (cache) and mail to client;
Step 111: judge whether all respond body (body) finishes receiving according to whole response body (body) length in head response (header) or block transmission encoding operation (Chunked) mark; If not, then step 102 is jumped to;
Step 112: if so, then close and connect and terminate compression.
Head response (header) described in said method, it is the character string sent before server transmits HTML(Hypertext Markup Language) to browser with HTTP (http protocol), before HTML sent back in supertext preliminary treatment language (PHP), all head response data first need be passed.
Response body (body) described in said method is a kind of HTML label be used in webpage, represents the main part of webpage, and namely the content that can see of user, can comprise the various contents such as text, picture, audio frequency, video.
Block transmission coding (Chunked---Chunked transferencoding) described in said method is a kind of data transmission mechanism in HTTP(Hypertext Transport Protocol), allows HTML (Hypertext Markup Language) to send to the data of client application (normally web browser) can be divided into multiple part by web page server; Use block transmission is encoded, and data decomposition becomes a series of data block, and with one or more pieces of transmissions, such server can send data and not need to know the total size sending content in advance.
HTML(Hypertext Markup Language) is transmitted in the process of browser with HTTP (http protocol) at server, be divided into head response (header) and response body (body) in whole response, all respond the determination methods that body (body) data receiver completes and comprise:
Method 1: head response (header) is inner comprises physical length instruction (Content-Length), the length then all responding body (body) is length represented in physical length instruction (Content-Length), namely terminates after having accepted the data of this length.
Method 2: head response (header) is inner comprises block transmission coded command (Transfer-Encoding:Chunked), when running into one piece of response body (Chunk) that a length is 0, then represents that all responding body (body) data receiver completes.
As can be seen from above-described embodiment 1, a kind of proxy server active compression method provided by the invention, by proxy server in the downloading data of website, compresses data simultaneously, greatly saves bandwidth; And the data after compression preserved by described proxy server in compressed cache, time later each client asks this packed data, can quickly call from compressed cache and directly provide, while saving bandwidth, also reduce the consumption of CPU; And improve network speed largely.
With reference to figure 2, it is the flow chart of a kind of proxy server active compression method embodiment 2 that the present invention proposes.
Step 201: start;
Step 202: receive data from website;
Step: 203: judge whether to receive head response (header);
Step 204: if receiving head response (header), then by the data that receive responsively head (header) keep in;
Step 205: judge whether to receive 2 special identifier symbols, then jump to step 202 if not;
Step 206: if so, then think that head response (header) receives;
Step 207: judge whether head response comprises block transmission coded command (Chunked);
Step 208: if head response does not comprise block transmission coded command (Chunked), then all responded the length of body (body) according to head response (header);
Step 209: force head response to be set to block transmission encoding operation (Chunked);
Step 210: add entity coding instruction (Content-Encoding:gzip) in head response, and jump to step 213;
Step 211: if so, then learn that this response is block transmission coding (Chunked), then jump to step 213;
Step 212: if not receiving head response (header), then compress the data of this block response body (body);
Step 213: data be saved in compressed cache (cache) and mail to client;
Step 214: judge that whether all respond body (body) finishes receiving, and if not, then jumps to step 202 according to whole response body (body) length in head response (header) or block transmission encoding operation (Chunked) mark;
Step 215: if so, then refresh operation is carried out to compressed cache;
Step 216: close and connect and terminate compression.
As can be seen from above-described embodiment 2, a kind of proxy server active compression method provided by the invention, by proxy server in the downloading data of website, compresses data simultaneously, greatly saves bandwidth; And the data after compression preserved by described proxy server in compressed cache, time later each client asks this packed data, can quickly call from compressed cache and directly provide, while saving bandwidth, also reduce the consumption of CPU; And further, before closedown connects and terminates, refresh operation is carried out to compressed cache, compression process can be made more smooth; And improve network speed largely.
Transmit HTML(Hypertext Markup Language) in the process of browser at server with HTTP (http protocol), in whole response, be divided into head response (header) and response body (body).The end of head response (header) be 2 r n, this be http agreement regulation (as long as that is: detect 2 r n, represent that http head receives.) therefore, preferred described special identifier symbol for r n.
Those skilled in the art should know, when server adopts HTTP (http protocol), described special identifier symbol for r n, but in other transportation protocols, this special identifier symbol may change, therefore, special identifier should not accorded with r n as restriction technical characteristic of the present invention.
Here must illustrate; above-mentioned two embodiments are proxy server and transmit the embodiment of HTML(Hypertext Markup Language) to browser with HTTP (http protocol), but also should belong to protection scope of the present invention based on the similar active compression method transmitting data under other protocols of the present invention's design.
Present invention also offers a kind of proxy server, it comprises:
Receiver module, for receiving data from website, and judges whether data are head response; If receive head response, then by the data received responsively head keep in, and judge whether head response receives; If head response does not receive, then described receiver module continues to receive data from website; If head response receives, then data are mail to head response processing module;
Head response processing module, for judging whether head response comprises block transmission coded command, if head response does not comprise block transmission coded command, then force head response to be set to block transmission encoding operation, and in head response, add entity coding instruction, then data are mail to sending module; If head response comprises block transmission coding, then direct data are mail to sending module;
Data, for compressing the data of this block response body, are then mail to sending module by compression module;
According to the whole response body length in head response or block transmission encoding operation mark, sending module, for data being saved in compressed cache and mailing to client, and judges all whether response body finishes receiving, if so, then closes and connect and terminate; If not, then described receiver module continues to receive data from website.
Preferably, described sending module also for closedown connects and terminate compress before, refresh operation is carried out to compressed cache.
As can be seen from the above, a kind of proxy server provided by the invention, by proxy server in the downloading data of website, compresses data simultaneously, greatly saves bandwidth; And the data after compression preserved by described proxy server in compressed cache, time later each client asks this packed data, can quickly call from compressed cache and directly provide, while saving bandwidth, also reduce the consumption of CPU; And further, before closedown connects and terminates, refresh operation is carried out to compressed cache, compression process can be made more smooth; And improve network speed largely.
Here must illustrate; above-described embodiment is that proxy server transmits the embodiment of HTML(Hypertext Markup Language) to browser with HTTP (http protocol), but also should belong to protection scope of the present invention based on the similar proxy server transmitting data under other protocols of the present invention's design.
Those of ordinary skill in the field are to be understood that: the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a proxy server active compression method, is characterized in that, comprising:
Data are received from website;
Judge whether to receive head response;
If receive head response, then by the data received responsively head keep in, and judge whether head response receives; If head response does not receive, then continue to receive data from website; If head response receives, then judge whether head response comprises block transmission coded command, if head response does not comprise block transmission coded command, head response is then forced to be set to block transmission encoding operation, and in head response, add entity coding instruction, and data are saved in compressed cache and mail to client; If head response comprises block transmission coded command, then data be saved in compressed cache and mail to client;
If not receive head response, then the data of this block response body are compressed, and data are saved in compressed cache and mail to client;
Judge all whether response body finishes receiving according to the whole response body length in head response or block transmission encoding operation mark, if so, then close and connect and terminate; If not, then continue to receive data from website.
2. a kind of proxy server active compression method according to claim 1, it is characterized in that, subsequent processing steps also comprises:
Before closedown connects and terminates, refresh operation is carried out to compressed cache.
3. a kind of proxy server active compression method according to claim 1 and 2, is characterized in that, the described step judging whether head response receives comprises:
Judge whether to receive 2 special identifier symbols, if so, then think that head response receives.
4. a kind of proxy server active compression method according to claim 3, is characterized in that, described special identifier symbol for r n.
5. a proxy server, is characterized in that, comprising:
Receiver module, for receiving data from website, and judges whether data are head response; If receive head response, then by the data received responsively head keep in, and judge whether head response receives; If head response does not receive, then described receiver module continues to receive data from website; If head response receives, then data are mail to head response processing module;
Head response processing module, for judging whether head response comprises block transmission coded command, if head response does not comprise block transmission coded command, then force head response to be set to block transmission encoding operation, and in head response, add entity coding instruction, then data are mail to sending module; If head response comprises block transmission coding, then direct data are mail to sending module;
Data, for compressing the data of this block response body, are then mail to sending module by compression module;
According to the whole response body length in head response or block transmission encoding operation mark, sending module, for data being saved in compressed cache and mailing to client, and judges all whether response body finishes receiving, if so, then closes and connect and terminate; If not, then described receiver module continues to receive data from website.
6. a kind of proxy server according to claim 5, is characterized in that, described sending module also for before closedown connects and terminates, carries out refresh operation to compressed cache.
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| CN103929447B (en) * | 2013-01-11 | 2017-07-07 | 中国科学院声学研究所 | A kind of method of the parsing HTTP chunked coded datas based on PEEK operations |
| CN104780182B (en) * | 2014-01-09 | 2018-05-22 | 中国科学院声学研究所 | HTTP chunked are encoded and IP encapsulations, analytic method |
| CN106559468A (en) * | 2015-09-30 | 2017-04-05 | 北京奇虎科技有限公司 | A kind of method for accessing data |
| CN106559465A (en) * | 2015-09-30 | 2017-04-05 | 北京奇虎科技有限公司 | Save the determination method and device of flow data |
| CN106559466A (en) * | 2015-09-30 | 2017-04-05 | 北京奇虎科技有限公司 | Save the determination method and device of flow data |
| CN112187858B (en) * | 2020-08-24 | 2023-04-18 | 浙江百应科技有限公司 | Method for matching pipeline type http request and response |
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Effective date of registration: 20180719 Address after: 510663 Guangdong science and Technology Development Zone, Guangzhou science and Technology Development Zone, No. 3, No. A4, scientific research road, No. 3, No. 458, No. Patentee after: Guangzhou Zhi Le Internet of things Technology Co., Ltd. Address before: 100070 Beijing Fengtai District headquarters base area 8, 4 floor. Patentee before: Beijing Glass Period Communication Technology Co., Ltd. |