CN114415989B - Multi-client connection printing system for iOS system - Google Patents
Multi-client connection printing system for iOS system Download PDFInfo
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- CN114415989B CN114415989B CN202111458052.XA CN202111458052A CN114415989B CN 114415989 B CN114415989 B CN 114415989B CN 202111458052 A CN202111458052 A CN 202111458052A CN 114415989 B CN114415989 B CN 114415989B
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- 230000007246 mechanism Effects 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 6
- 230000004044 response Effects 0.000 claims description 6
- 230000000977 initiatory effect Effects 0.000 claims description 5
- 230000008030 elimination Effects 0.000 claims description 3
- 238000003379 elimination reaction Methods 0.000 claims description 3
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
- G06F3/1203—Improving or facilitating administration, e.g. print management
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
- G06F3/1237—Print job management
- G06F3/126—Job scheduling, e.g. queuing, determine appropriate device
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1278—Dedicated interfaces to print systems specifically adapted to adopt a particular infrastructure
- G06F3/1285—Remote printer device, e.g. being remote from client or server
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1296—Printer job scheduling or printer resource handling
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- 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
- H04L67/143—Termination or inactivation of sessions, e.g. event-controlled end of session
- H04L67/145—Termination or inactivation of sessions, e.g. event-controlled end of session avoiding end of session, e.g. keep-alive, heartbeats, resumption message or wake-up for inactive or interrupted session
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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Abstract
The invention discloses a multi-client connection printing system for an iOS system, which comprises a client, a server and a printer, wherein the client is communicated with the printer through Bluetooth, and the client is communicated with the server through Bluetooth, wireless local area network or Internet connection; the invention provides a multi-client connection printing system aiming at an iOS system, which has low requirements on printers and can rapidly perform multi-client printing tasks.
Description
Technical Field
The invention relates to the technical field of printing, in particular to a multi-client connection printing system aiming at an iOS system.
Background
The apple iOS App adopts single-to-single connection in printing and then prints. When a plurality of apps initiate printing at the same time, only one App can be connected with the bluetooth printer, and other apps are not successfully connected and the printing is failed. Therefore, for merchants of the apple iOS system, only one device can be defaulted to perform connection printing when corresponding printing is performed, and the efficiency of business activities is greatly influenced. Especially for small micro enterprises, no redundant funds are required for special people to develop and reform, and the production capacity of the small micro enterprises is greatly influenced. When a plurality of apps print, print data is sent to a print program at a printer end through a local area network when the apps print, and the print program performs queuing printing. The method is very dependent on the local area network, and once the corresponding IP changes, the printing program needs to be restarted, the corresponding printing is performed again, and the printing information is repeatedly sent by reconnection. And a plurality of apps need to be connected again by Bluetooth every time, which is very troublesome and has very poor user experience. Therefore, a system with low cost, convenient use and printing connection by multiple devices is urgently needed.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides the multi-client connection printing system aiming at the iOS system, which has low requirements on printers and can rapidly carry out multi-client printing tasks.
The technical scheme of the invention is as follows:
a multi-client connection printing system for an iOS system comprises a client, a server and a printer, wherein the client is in connection communication with the printer through Bluetooth, and the client is in connection communication with the server through Bluetooth, a wireless local area network or the Internet; the specific printing mode is as follows:
101 Initializing the configuration step: a client is connected with a printer through Bluetooth or a communication line, and printer connection information obtained by connection is transmitted to a server;
102 Primary coordination judgment step: the server coordinates the printing transaction, when the client needs to print, the server judges whether the client is a main client according to a heartbeat mechanism sent by the client, if so, the printing step of the main client is entered, and if not, the printing step of other clients is entered;
103 Main client printing step: the client connected with the printer directly sends printing information with the printer through a Bluetooth protocol, and the printer prints;
104 Other client print step: the server coordinates the printing transaction, and when the client needs to print, the server further judges whether all printers have the main client; if yes, putting the printing transaction into a printing queue; if not, the server feeds back the printable information to the client initiating printing, the client is connected with the printer and sends the printing information of the printing transaction through the Bluetooth protocol, and the printer prints;
105 Print queue processing step): if yes, continuing to judge that the printer is idle, transmitting the information to be printed to the main client of the corresponding printer for connection printing, if not, putting the printing information into a to-be-printed queue in the printing queue, and carrying out corresponding printing after the printer is idle.
Further, the printer connection information includes printer MAC information, time information, status information.
Further, at least one of the number of printers in step 101), all printers are connected to the client, and the printer connection information is transmitted to the server.
Further, if not, in step 104), when the client initiating printing prints, a corresponding notification is sent to the server through the heartbeat mechanism, that is, the server is informed that the corresponding printer has the master client, and the master client is the client.
Further, the client and the server are connected and communicated through a heartbeat mechanism, and the client sends corresponding connection information with the printer to the server at regular time.
Further, the heartbeat mechanism comprises sending a heartbeat packet and responding the heartbeat packet;
the information in the transmitted heartbeat packet includes {
"id": "client unique identification",
"timestamp": time stamp ",
"printer" is a "printer unique code",
"type": category: 0 represents the secondary end, 1 represents the primary end,
"flag" state: 0 represents busy and 1 represents idle; type=0 ignore "};
the information in the response heartbeat packet includes {
"id": "returns the client unique identification of the request as received",
"timestamp": "returns the timestamp of the request as is",
"printer" returns the requested printer unique code as is ",
"type": "returns the category of the request as received: 0 represents the secondary end, 1 represents the primary end,
"ack": "response: 1 indicates normal ",
task state: 0 indicates no task, 1 indicates a task,
token, the identifier used in the subsequent pulling task, the post-use invalidation.
Further, the printing queue of the server side comprises at least two queues, wherein the first queue is a processing queue of the printing program and the second queue is a queue to be printed; when a client connected with a printer takes a print job from a server, firstly uniformly entering a queue to be printed of the server, judging whether the print job is the same print job before through an algorithm, and thus carrying out duplication elimination; after the task is re-arranged, the task enters a processing queue, the client informs the server after printing is finished, the server removes the task from the processing queue, and otherwise, the task reenters the queue to be printed after overtime.
Compared with the prior art, the invention has the advantages that:
the invention coordinates by the server side, is convenient for printing, and realizes the situations of avoiding repeated printing and missing printing by a double-list mode. The client can also realize remote printing, and the printing speed is effectively improved. The main client and the printer (namely the Bluetooth printer) maintain long connection, so that the time of Bluetooth connection during each printing is saved; when printing, the corresponding printing information is submitted to a printing queue at the server side, the user operation is not blocked, and the printer takes the next printing task in the queue to be printed when idle.
Drawings
FIG. 1 is a print flow frame diagram of the present invention;
fig. 2 is a frame diagram of a heartbeat mechanism of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, wherein like or similar reference numerals refer to like or similar elements or elements of similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and not as a limitation of the present invention.
It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Reference numerals referring to steps in the various embodiments are merely for convenience of description and do not have a substantial sequential relationship. Different steps in each specific embodiment can be combined in different sequences, so that the aim of the invention is fulfilled.
The invention is further described below with reference to the drawings and the detailed description.
Example 1:
as shown in fig. 1 and 2, a print system with multiple client connections for iOS system includes a client, a server, and a printer, where the client communicates with the printer via bluetooth, and the client communicates with the server via bluetooth, a wireless lan, or an internet connection. The clients are mobile terminals, tablet computers, PC computers and the like of mobile phones. In this embodiment, the server does not need to be connected to the printer, that is, the server manages only the client portion.
The specific printing mode is as follows:
101 Initializing the configuration step: a client is connected with a printer through Bluetooth or a communication line, and printer connection information obtained by connection is transmitted to a server. The printer connection information includes printer MAC information, time information, status information, and the like.
At least one of the printers, namely two or more printers, needs to be connected with the client, can be connected with one client, can be connected with a plurality of clients, namely all printers need to be connected once, obtains corresponding connection information of all printers, and transmits the corresponding connection information to the server through the client.
In this case, the server does not need to connect to the printer, and all information is transmitted from the client.
102 Primary coordination judgment step: the server coordinates the printing transaction, when the client needs to print, the server judges whether the client is a main client according to a heartbeat mechanism sent by the client, if so, the printing step of the main client is entered, and if not, the printing step of other clients is entered;
103 Main client printing step: the client connected with the printer directly sends printing information with the printer through a Bluetooth protocol, and the printer prints. That is, as long as the client is already connected to the printer, printing can be directly performed without disconnection.
104 Other client print step: the server coordinates the printing transaction, and when the client needs to print, the server further judges whether all printers have the main client. If yes (namely, all printers are connected with the corresponding main end client), putting the printing transaction into a printing queue; if not (i.e. at least one printer is not connected with the corresponding client), the server feeds back the printable information to the client initiating printing, the client is connected with the printer, and the printer prints the printing information of the printing transaction through the Bluetooth protocol.
If the client side initiates printing, the client side sends corresponding notification to the server side through a heartbeat mechanism, namely the server side is informed that the corresponding printer has the main client side, and the main client side is the client side.
105 Print queue processing step): if yes, continuing to judge that the printer is idle, transmitting the information to be printed to the main client of the corresponding printer for connection printing, if not, putting the printing information into a to-be-printed queue in the printing queue, and carrying out corresponding printing after the printer is idle.
The print queue of the server side comprises at least two queues, wherein one is a processing queue of the print program and the other is a queue to be printed. When a client connected with a printer takes a print job from a server, firstly uniformly entering a queue to be printed of the server, judging whether the print job is the same print job before through an algorithm, and thus carrying out duplication elimination; after the task is re-arranged, the task enters a processing queue, the client informs the server after printing is finished, the server removes the task from the processing queue, and otherwise, the task reenters the queue to be printed after overtime. The situation of avoiding repeated printing and missing printing is realized.
The main client and the printer (namely the Bluetooth printer) maintain long connection, so that the Bluetooth connection time during each printing is saved; when printing, the corresponding printing information is submitted to the printing queue of the server without blocking the user operation, and the printer takes the next printing task in the queue to be printed when idle, thereby greatly improving the printing speed.
The client side and the server side are also connected and communicated through a heartbeat mechanism, and the client side sends corresponding connection information with the printer to the server side at regular time.
The heartbeat mechanism is an interconnection communication mode of the client and the server, and information transfer interaction is regularly carried out like the heartbeat timing of a person. Specifically, the method comprises the steps of sending a heartbeat packet and responding to the heartbeat packet. The sending heartbeat package and the responding heartbeat package only list the corresponding contained information, and the specific information sending, receiving and analyzing are conventional technical means and are not described in detail.
The specific heartbeat mechanism is described in step 102), and includes first determining whether the client is a main client connected to the printer, if so, continuing to determine whether to go back to the background, if so, disconnecting the main client from bluetooth connection with the printer, and if not, disconnecting the main client from the printer, and no longer providing heartbeat information. And if the user does not need to go back to the background, the heartbeat information is periodically reported. If the client is not the main terminal connection terminal, but printing is needed at the moment, corresponding heartbeat information is directly reported. So as to facilitate the corresponding coordination of the service end. Specifically, the information in the transmitted heartbeat packet includes {
"id": "client unique identification",
"timestamp": time stamp ",
"printer" is a "printer unique code",
"type": category: 0 represents the secondary end, 1 represents the primary end,
"flag" state: 0 represents busy and 1 represents idle; type=0 ignore "}.
The information in the response heartbeat packet includes {
"id": "returns the client unique identification of the request as received",
"timestamp": "returns the timestamp of the request as is",
"printer" returns the requested printer unique code as is ",
"type": "returns the category of the request as received: 0 represents the secondary end, 1 represents the primary end,
"ack": "response: 1 indicates normal ",
task state: 0 indicates no task, 1 indicates a task,
token, the identifier used in the subsequent pulling task, the post-use invalidation.
For example, if the master client sends a print request, the specific heartbeat information sent is: { "id": "4606f9172e464176af855ae5e313cb6e",
"timestamp":"1636185712096",
"printer":"SP-L36-A1B2",
"type":"1",
"flag":"1"}。
if the server responds, the returned content is as follows: {
"id":"4606f9172e464176af855ae5e313cb6e",
"timestamp":"1636185712096",
"printer":"L36-A1B2",
"type":"1",
"ack":"1",
"task":"1",
"token":"bf005607-e500-45da-a641-344a6ebf10b4"}。
If the server responds, the returned content is as follows: {
"id":"4606f9172e464176af855ae5e313cb6e",
"timestamp":"1636185712096",
"printer":"L36-A1B2",
"type":"1",
"ack":"1",
"task":"0"}。
If other clients send out print requests, the specific heartbeat information sent is: {
"id":"1bf8795db22f4d38a82b8dcaa80b9bcd",
"timestamp":"1636185712096",
"printer":"SP-L36-A1B2",
"type":"0"}。
The server responds, and the returned content is as follows: {
"id":"1bf8795db22f4d38a82b8dcaa80b9bcd",
"timestamp":"1636185712096",
"printer":"SP-L36-A1B2",
"type":"0",
"ack":"1"}。
In summary, in actual operation, as long as the main client is connected with the printer, other clients can completely perform remote printing, and are not limited by space and network.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the concept of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (6)
1. A multi-client connection printing system for an iOS system, characterized by: the system comprises a client, a server and a printer, wherein the client is communicated with the printer through Bluetooth, and the client is communicated with the server through Bluetooth, wireless local area network or Internet connection; the specific printing mode is as follows:
101 Initializing the configuration step: a client is connected with a printer through Bluetooth or a communication line, and printer connection information obtained by connection is transmitted to a server;
102 Primary coordination judgment step: the server coordinates the printing transaction, when the client needs to print, the server judges whether the client is a main client according to a heartbeat mechanism sent by the client, if so, the printing step of the main client is entered, and if not, the printing step of other clients is entered;
103 Main client printing step: the client connected with the printer directly sends printing information with the printer through a Bluetooth protocol, and the printer prints;
104 Other client print step: the server coordinates the printing transaction, and when the client needs to print, the server further judges whether all printers have the main client; if yes, putting the printing transaction into a printing queue; if not, the server feeds back the printable information to the client initiating printing, the client is connected with the printer and sends the printing information of the printing transaction through the Bluetooth protocol, and the printer prints;
105 Print queue processing step): if yes, continuing to judge that the printer is idle, transmitting the information to be printed to a main client of the corresponding printer for connection printing, and if not, putting the printing information into a to-be-printed queue in the printing queue, and carrying out corresponding printing after the printer is idle;
the heartbeat mechanism comprises a heartbeat packet sending and heartbeat packet responding;
the information in the transmitted heartbeat packet includes {
"id": "client unique identification",
"timestamp": time stamp ",
"printer" is a "printer unique code",
"type": category: 0 represents the secondary end, 1 represents the primary end,
"flag" state: 0 represents busy and 1 represents idle; type=0 ignore "};
the information in the response heartbeat packet includes {
"id": "returns the client unique identification of the request as received",
"timestamp": "returns the timestamp of the request as is",
"printer" returns the requested printer unique code as is ",
"type": "returns the category of the request as received: 0 represents the secondary end, 1 represents the primary end,
"ack": "response: 1 indicates normal ",
task state: 0 indicates no task, 1 indicates a task,
token, the identifier used in the subsequent pulling task, the post-use invalidation.
2. A multi-client connected printing system for an iOS system according to claim 1, wherein: the printer connection information includes printer MAC information, time information, status information.
3. A multi-client connected printing system for an iOS system according to claim 1, wherein: at least one of the number of printers in step 101), all printers are connected with the client, and printer connection information is transmitted to the server.
4. A multi-client connected printing system for an iOS system according to claim 1, wherein: if not, step 104) sends out corresponding notification to the server through the heartbeat mechanism when the client initiating printing prints, that is, informs the server that the corresponding printer has the main client, and the main client is the client.
5. A multi-client connected printing system for an iOS system according to claim 1, wherein: the client side and the server side are connected and communicated through a heartbeat mechanism, and the client side sends corresponding connection information with the printer to the server side at regular time.
6. A multi-client connected printing system for an iOS system according to claim 1, wherein: the printing queue of the server comprises at least two queues, wherein one is a processing queue of a printing program and the other is a queue to be printed; when a client connected with a printer takes a print job from a server, firstly uniformly entering a queue to be printed of the server, judging whether the print job is the same print job before through an algorithm, and thus carrying out duplication elimination; after the task is re-arranged, the task enters a processing queue, the client informs the server after printing is finished, the server removes the task from the processing queue, and otherwise, the task reenters the queue to be printed after overtime.
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| CN111367479A (en) * | 2020-02-27 | 2020-07-03 | 上海东普信息科技有限公司 | Cloud printing method, printing method of cloud printing service platform and storage medium |
| CN112905130A (en) * | 2021-02-05 | 2021-06-04 | 深圳市商汤科技有限公司 | Self-service printing method, device, equipment and storage medium |
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| CN114415989A (en) | 2022-04-29 |
| CN117170597A (en) | 2023-12-05 |
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