CN114415987A - Multi-client coordinated connection printing system for iOS system - Google Patents
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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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- 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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- 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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Abstract
The invention discloses a multi-client coordinated connection printing system for an iOS system, which comprises a client, a server and a printer, wherein the client is connected and communicated with the printer through Bluetooth, and the client and the server are connected and communicated through Bluetooth, a wireless local area network or the Internet; the invention provides a multi-client coordinated connection printing system aiming at an iOS system, which has low requirement on a printer and can quickly perform multi-client printing tasks.
Description
Technical Field
The invention relates to the technical field of printing, in particular to a multi-client coordinated connection printing system for an iOS system.
Background
The apple iOS App uses single-to-single connection in printing, and then prints. When a plurality of apps initiate printing simultaneously, only one of the apps is connected with the Bluetooth printer, and the other apps are unsuccessfully connected and fail to print. Therefore, for the commercial customers of the apple iOS system, only one default device can be used for connection printing when corresponding printing is carried out, and the efficiency of commercial activities is greatly influenced. Particularly, for small and micro enterprises, no extra funds are required to be developed and modified by specially-assigned persons, and the production capacity of the small and micro enterprises is greatly influenced. When a plurality of apps are used for printing, the existing bluetooth printer of the iOS system on the market transmits printing data to a printing program at the printer end through a local area network when the apps are required to print, and the printing program is used for queuing and printing. The method is very dependent on a local area network, and once a corresponding IP changes, a printing program needs to be restarted, corresponding printing is carried out again, and the printing information is reconnected and sent repeatedly. Therefore, a system which has lower cost and convenient use and can be connected with multiple devices for printing is urgently needed.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides the multi-client coordinated connection printing system aiming at the iOS system, which has low requirement on a printer and can quickly perform multi-client printing tasks.
The technical scheme of the invention is as follows:
a multi-client coordinated connection printing system for an iOS system comprises a client, a server and a printer, wherein the client is connected and communicated with the printer through Bluetooth, and the client is connected and communicated with the server through Bluetooth, a wireless local area network or the Internet; the specific printing mode is as follows:
101) an initialization configuration step: firstly, a client is connected with a printer in a Bluetooth or communication line mode, and printer connection information obtained by connection is transmitted to a server;
102) a preliminary coordination judgment step: the server coordinates the printing transaction, when a client needs to print, the server judges whether the client is a main client or not according to a heartbeat mechanism sent by the client, if so, the printing step of the main client is carried out, and if not, the printing step of other clients is carried out;
103) printing by the main client: the client connected with the printer directly sends printing information with the printer through a Bluetooth protocol, and the printer prints the information;
104) printing by other clients: the server coordinates the printing transaction, and further judges whether all printers have the main-end client when the client needs to print; if so, the client side continuously waits for the corresponding printer to be vacated; if not, the server side feeds back printable information to the client side initiating printing, the client side is connected with a corresponding printer, printing information of a printing transaction is sent through a Bluetooth protocol, and the printer prints;
105) a print queue processing step: if yes in the step 104), continuously judging whether the printer is idle, transmitting the information to be printed to a main-end client corresponding to the idle printer, disconnecting the printer by the main-end client, and connecting the printer by the client to be printed and printing; if the printer is not idle, the information to be printed is transmitted to the main client corresponding to the idle printer, and when the main client finishes printing, the connected printer is disconnected.
Further, the printer connection information includes printer MAC information, time information, and status information.
Further, in step 101), the number of printers is at least one, all the printers are connected with the client, and the printer connection information is transmitted to the server.
Further, if the result in the step 104) is negative, when the client initiating the printing prints, a corresponding notification is sent to the server, 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 a heartbeat packet sending and a heartbeat packet responding;
the information in the heartbeat packet is sent to include
"id": client unique identification ",
"timestamp",
"printer unique code,
type: category: 0 represents the secondary side, 1 represents the primary side ",
status of "flag": 0 indicates busy, 1 indicates idle; neglect "} when type is 0
The information in the response heartbeat packet includes
"id" unique identification of client that returns request as is "
"timestamp": return the timestamp of the request as is ",
"printer": return the requested printer unique code as it is,
"type": the category of the request is returned as is: 0 represents the secondary side, 1 represents the primary side ",
"ack": response: 0, no main end, and an auxiliary end; 1 indicates normal; 2 denotes turning off the printer, giving the master,
task status: 0 means no task, 1 means task ",
"token" is the mark used in the subsequent pulling task, and is invalid after being used once.
Further, the printing queue of the server comprises at least two queues, wherein one queue is a processing queue of a printing program, and the other queue is a queue to be printed; when a client connected with a printer fetches a printing task from a server, the client uniformly enters a queue to be printed of the server, and whether the same previous printing task is the same is judged through an algorithm, so that duplicate removal is performed; and after the repetition is eliminated, the task enters a processing queue, the client informs the server after printing, the server removes the task from the processing queue, and otherwise, the task reenters the queue to be printed after time out.
Compared with the prior art, the invention has the advantages that:
the invention is coordinated by the server side, is convenient for printing, and avoids the situations of repeated printing and printing omission by a double-list mode. The master client and the printer (namely the Bluetooth printer) maintain long connection, so that the action and time of reconnecting the Bluetooth are saved during each printing, and the reconnection operation is only carried out when the master client needs to be replaced; and when printing, the corresponding printing information is submitted to a server side printing queue, the user operation is not blocked, and the printer takes the next printing task in the queue to be printed when the printer is idle.
Drawings
FIG. 1 is a print flow framework of the present invention;
fig. 2 is a frame diagram of the heartbeat mechanism of the present invention.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, wherein like or similar reference numerals refer to like or similar elements or elements of similar function throughout. The embodiments described below with reference to the drawings are exemplary only, and are not intended as limitations on the present invention.
It will be understood by those skilled in the art that, unless otherwise defined, 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. 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 in the various embodiments are provided for steps of the description only and are not necessarily associated in a substantially sequential manner. Different steps in each embodiment can be combined in different sequences, so that the purpose of the invention is achieved.
The invention is further described with reference to the following figures and detailed description.
Example 1:
as shown in fig. 1 and 2, a multi-client coordinated connection printing system for an iOS system includes a client, a server, and a printer, where the client is connected and communicated with the printer via bluetooth, and the client is connected and communicated with the server via bluetooth, a wireless lan, or the internet. The client is mostly a mobile terminal of a mobile phone, a tablet, a PC computer, etc. 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) an initialization configuration step: a client is connected with a printer through a Bluetooth or communication line mode, and printer connection information obtained through connection is transmitted to a server. The printer connection information includes printer MAC information, time information, status information, and the like.
The number of the printers is at least one, that is, two or more printers, all the printers need to be connected with the client, all the printers can be connected with one client, or all the printers can be connected with a plurality of clients, that is, all the printers need to be connected once, corresponding connection information of all the printers is obtained, and the connection information is transmitted to the server through the clients.
Here, the server does not need to be connected to the printer, and all information is transmitted from the client.
102) A preliminary coordination judgment step: the server coordinates the printing transaction, when the client needs to print, the server judges whether the client is the main client according to the heartbeat mechanism sent by the client, if so, the printing step of the main client is carried out, and if not, the printing step of other clients is carried out.
103) Printing by the main client: 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 and the printer are connected and the disconnection does not occur, the printing can be directly performed.
104) Printing by other clients: 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 so (namely all printers are connected with corresponding main-end clients), the client continuously waits for the corresponding printer to be vacated and puts the printing transaction into a printing queue; if not (namely at least one printer is not connected with the corresponding client), the server side feeds back printable information to the client side initiating printing, the client side is connected with the corresponding printer, printing information of a printing transaction is sent through a Bluetooth protocol, and the printer prints.
If not, when the client initiating printing prints, a corresponding notification is sent to the server through a heartbeat mechanism, that is, the server is informed that the corresponding printer has a main client, and the main client is the client.
105) A print queue processing step: if yes in the step 104), continuously judging whether the printer is idle, transmitting the information to be printed to a main-end client corresponding to the idle printer, disconnecting the printer by the main-end client, and connecting the printer by the client to be printed and printing. If the printer is not idle, the information to be printed is transmitted to the main client corresponding to the idle printer, and when the main client finishes printing, the connected printer is disconnected. Namely, when the main client side prints, the main client side continues to operate, does not perform any independent feedback of the received information of the server side, or gives a clear indication, disconnects, and does not give information such as waiting. The whole process only needs to send corresponding information by a heartbeat mechanism.
And the client to be printed judges whether the printing is successful or not by setting corresponding overtime waiting and whether the printing request needs to be initiated again or not.
Preferably, the server may include a print queue, where the print queue includes at least two queues, 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 fetches a printing task from a server, the client uniformly enters a queue to be printed of the server, and whether the same previous printing task is the same is judged through an algorithm, so that duplicate removal is performed; after the rearrangement, the task enters a processing queue, after the client prints, the server can know through a heartbeat mechanism, and then the server removes the task from the processing queue, otherwise, the task enters the queue to be printed again after time out. The situation of avoiding repeated printing and missing printing is realized.
The host client and the printer (namely the Bluetooth printer) maintain long connection, so that the traditional operation and time for performing Bluetooth connection in each printing process are saved; the corresponding printing information can be submitted to the printing queue of the server side during printing, user operation is not blocked, and the printer takes the next printing task in the queue to be printed when the printer is idle, so that the printing speed is greatly improved.
The heartbeat mechanism between the client and the server carries out connection communication, and the client sends corresponding connection information between the client and the printer to the server at regular time.
The heartbeat mechanism is a communication mode of mutual connection between the client and the server, and information transmission interaction is regularly carried out like human heartbeat. The method specifically comprises sending a heartbeat packet and responding to the heartbeat packet. The sending heartbeat packet and the responding heartbeat packet only list information contained correspondingly, and specific information sending, receiving and analyzing are conventional technical means and are not described in detail.
The specific heartbeat mechanism itself is described in step 102), which includes first determining whether the client is a main client connected to the printer, if so, continuing to determine whether to quit to the background, if so, disconnecting the bluetooth connection between the main client and the printer, and taking the main client off the line, so as not to send out heartbeat information. And if the user does not need to back to the background, periodically reporting the heartbeat information. If the client is not the main end connecting end and needs to be printed at the moment, the corresponding heartbeat information is directly reported. So as to facilitate the server side to perform corresponding coordination. Specifically, the information in the heartbeat packet includes
"id": client unique identification ",
"timestamp",
"printer unique code,
type: category: 0 represents the secondary side, 1 represents the primary side ",
status of "flag": 0 indicates busy, 1 indicates idle; ignore "} when type is 0.
The information in the response heartbeat packet includes
"id" return the client unique identification of the request as is ",
"timestamp": return the timestamp of the request as is ",
"printer": return the requested printer unique code as it is,
"type": the category of the request is returned as is: 0 represents the secondary side, 1 represents the primary side ",
"ack": response: 0, no main end, and an auxiliary end; 1 indicates normal; 2 denotes turning off the printer, giving the master,
task status: 0 means no task, 1 means task ",
"token" is the mark used in the subsequent pulling task, and is invalid after being used once.
For example, if the main client sends a print request, the specific heartbeat information sent is as follows: {
"id":"4606f9172e464176af855ae5e313cb6e",
"timestamp":"1636185712096",
"printer":"SP-L36-A1B2",
"type":"1",
"flag":"1"}。
If the printer has a task right when the server side 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 printer has no task when the server side responds, the returned content is as follows: { "id": 4606f9172e464176af855ae5e313cb6e ",
"timestamp":"1636185712096",
"printer":"L36-A1B2",
"type":"1",
"ack":"1",
"task":"0"}。
in response, the printer is disconnected, and the returned content is as follows: {
"id":"4606f9172e464176af855ae5e313cb6e",
"timestamp":"1636185712096",
"printer":"L36-A1B2",
"type":"1",
"ack":"2",
"task":"0"}。
If the other client sends the printing request, the specific heartbeat information sent is as follows: {
"id":"1bf8795db22f4d38a82b8dcaa80b9bcd",
"timestamp":"1636185712096",
"printer":"SP-L36-A1B2",
"type":"0"}。
When the server side responds, the printer is connected with the client side, and the returned content is as follows: {
"id":"1bf8795db22f4d38a82b8dcaa80b9bcd",
"timestamp":"1636185712096",
"printer":"SP-L36-A1B2",
"type":"0",
"ack":"1"}。
When the server side responds, the printer is not connected with the client side, and the returned content is as follows: {
"id":"1bf8795db22f4d38a82b8dcaa80b9bcd",
"timestamp":"1636185712096",
"printer":"SP-L36-A1B2",
"type":"0",
"ack":"0",
"task":"1",
"token":"bf005607-e500-45da-a641-344a6ebf10b4"}。
In conclusion, the scheme is coordinated by the server side, printing is convenient, and the situations of repeated printing and printing missing are avoided by a double-list mode. The master client and the printer (namely the Bluetooth printer) maintain long connection, so that the action and time of reconnecting the Bluetooth are saved during each printing, and the reconnection operation is only carried out when the master client needs to be replaced; and when printing, the corresponding printing information is submitted to a server side printing queue, the user operation is not blocked, and the printer takes the next printing task in the queue to be printed when the printer is idle. .
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the spirit of the present invention, and these modifications and decorations should also be regarded as being within the scope of the present invention.
Claims (7)
1. A multi-client coordinated connection printing system for an iOS system, characterized by: the system comprises a client, a server and a printer, wherein the client is connected and communicated with the printer through Bluetooth, and the client is connected and communicated with the server through Bluetooth, a wireless local area network or the Internet; the specific printing mode is as follows:
101) an initialization configuration step: firstly, a client is connected with a printer in a Bluetooth or communication line mode, and printer connection information obtained by connection is transmitted to a server;
102) a preliminary coordination judgment step: the method comprises the steps that a server coordinates a printing transaction, when a client needs to print, the server judges whether the client is a main client or not according to a heartbeat mechanism sent by the client, if so, the printing step of the main client is carried out, and if not, the printing step of other clients is carried out;
103) printing by the main client: the client connected with the printer directly sends printing information with the printer through a Bluetooth protocol, and the printer prints.
104) Printing by other clients: the server coordinates the printing transaction, and further judges whether all printers have the main-end client when the client needs to print; if so, the client side continuously waits for the corresponding printer to be vacated; if not, the server side feeds back printable information to the client side initiating printing, the client side is connected with a corresponding printer, printing information of a printing transaction is sent through a Bluetooth protocol, and the printer prints;
105) a print queue processing step: if yes in the step 104), continuously judging whether the printer is idle, transmitting the information to be printed to a main-end client corresponding to the idle printer, disconnecting the printer by the main-end client, and connecting the printer by the client to be printed and printing; if the printer is not idle, the information to be printed is transmitted to the main client corresponding to the idle printer, and when the main client finishes printing, the connected printer is disconnected.
2. A multi-client coordinated connection printing system for an iOS system according to claim 1, characterized in that: the printer connection information includes printer MAC information, time information, status information.
3. A multi-client coordinated connection printing system for an iOS system according to claim 1, characterized in that: and step 101), the number of the printers is at least one, all the printers are connected with the client, and the printer connection information is transmitted to the server.
4. A multi-client coordinated connection printing system for an iOS system according to claim 1, characterized in that: and step 104), if the number is not in the middle, when the client initiating the printing prints, sending a corresponding notification to the server through a heartbeat mechanism, namely informing that the corresponding printer of the server has a main client, and the main client is the client.
5. A multi-client coordinated connection printing system for an iOS system according to claim 1, characterized in that: the client side and the server side are connected and communicated through a heartbeat mechanism, and the client side sends corresponding connection information between the client side and the printer to the server side at regular time.
6. The multi-client coordinated connection printing system for the iOS system according to claim 5, characterized in that: the heartbeat mechanism comprises a heartbeat packet sending unit and a heartbeat packet responding unit;
the information in the heartbeat packet is sent to include
"id": client unique identification ",
"timestamp",
"printer unique code,
type: category: 0 represents the secondary side, 1 represents the primary side ",
status of "flag": 0 indicates busy, 1 indicates idle; neglect "} when type is 0;
the information in the response heartbeat packet includes
"id" return the client unique identification of the request as is ",
"timestamp": return the timestamp of the request as is ",
"printer": return the requested printer unique code as it is,
"type": the category of the request is returned as is: 0 represents the secondary side, 1 represents the primary side ",
"ack": response: 0, no main end, and an auxiliary end; 1 indicates normal; 2 denotes turning off the printer, giving the master,
task status: 0 means no task, 1 means task ",
"token" is the mark used in the subsequent pulling task, and is invalid after being used once.
7. A multi-client coordinated connection printing system for an iOS system according to claim 1, characterized in that: the printing queue of the server comprises at least two queues, wherein one queue is a processing queue of a printing program, and the other queue is a queue to be printed; when a client connected with a printer fetches a printing task from a server, the client uniformly enters a queue to be printed of the server, and whether the same previous printing task is the same is judged through an algorithm, so that duplicate removal is performed; and after the repetition is eliminated, the task enters a processing queue, the client informs the server after printing, the server removes the task from the processing queue, and otherwise, the task reenters the queue to be printed after time out.
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| CN114415987B (en) | 2023-09-22 |
| CN117170596A (en) | 2023-12-05 |
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