CN112565425B - Method for copying and pasting among cloud application programs of multiple cross-cloud server host machine sessions - Google Patents
Method for copying and pasting among cloud application programs of multiple cross-cloud server host machine sessions Download PDFInfo
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- CN112565425B CN112565425B CN202011416155.5A CN202011416155A CN112565425B CN 112565425 B CN112565425 B CN 112565425B CN 202011416155 A CN202011416155 A CN 202011416155A CN 112565425 B CN112565425 B CN 112565425B
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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
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/543—User-generated data transfer, e.g. clipboards, dynamic data exchange [DDE], object linking and embedding [OLE]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
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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
- H04L67/34—Network arrangements or protocols for supporting network services or applications involving the movement of software or configuration parameters
Abstract
The invention discloses a method for copying and pasting among a plurality of cloud application programs of cross-cloud server host session, which comprises the following steps of S1: setting a shear plate agent program on each cloud server host; s2: creating a subscription queue on a message queue server; s3: the clipboard agent program in the session A broadcasts the copy operation information, and other cloud clipboard agent programs set respective system clipboards by using declarations; s4: and the user executes the pasting operation on the session B, and places the taken clipboard data into a system clipboard of the cloud server host for obtaining a window initiating the pasting behavior. The clipboard grouping and sharing technology can enable the same user to be connected to a plurality of cloud server hosts at the same time, and open and use cloud application windows running on a plurality of remote hosts, so that user-level clipboard copying and pasting operations are performed on the cloud application windows of the cross-cloud server hosts, and the clipboard grouping and sharing technology is high in speed and is anti-disclosure.
Description
Technical Field
The invention belongs to the technical field of cloud application, and particularly relates to a method for copying and pasting among a plurality of cloud application programs of cross-cloud server host sessions.
Background
With the change of cloud computing and cloud desktop technologies, the use scenes of people are further developed from cloud on office desktops to cloud on applications. Through deployment of the cloud application, users can use existing computer software like WeChat applets, the users do not need to install various redundant software on own computers, and can directly open traditional Office, 3D design and even own developed software applications through double click by an application software store, so that various problems of insufficient space of various personal computers, system compatibility of software, trouble in operation and maintenance of computer failures, too few software licenses, document confidentiality and the like are avoided, and the cloud application brings the most obvious benefit.
In the details of various requirements faced by the cloud application technology, there is a very critical clipboard technology, and since various software that is opened and used by the same user at the same time may actually run on different remote operating systems, the problem of how to transmit data when the user copies and pastes the two software is faced. For example, a Word window is actually run on the cloud host a, an Excel window is run on the cloud host B, both Word and Excel are used in the eyes of a user as if the user uses a local application program, and when the user copies a text in the Word window and wants to paste the text into the Excel, how to transfer the text data from the memory of the cloud host a to the memory of the cloud host B, and the text data can only be seen by the current user and cannot be taken by other users is urgently needed to be solved. In the conventional technology, a clipboard redirection channel of a remote desktop is used to allow copied data to reach a local computer of a user from a cloud host a and then to be transferred to a cloud host B from the local computer of the user, as shown in fig. 1, but the disadvantages of this are: the transmission speed is slow, and data leakage is easily caused.
At present, the industry has many internet products called cloud clipboard, which are essentially that they open accounts on their own website, and need users to upload clipboard data to their servers, and then log in with the same account on another computer or mobile phone, and take the clipboard data uploaded so far to paste, but this becomes a data sharing network disk, loses the meaning of the clipboard, and it has no relation with cloud application, and is the sharing between two client computers, and this patent is directed to the clipboard sharing between two application windows with different sources on the same computer.
Disclosure of Invention
The invention aims to provide a method for copying and pasting among a plurality of cloud application programs of cross-cloud server host session, and solves the technical problems that in the existing cloud application technology, when a user copies and pastes among a plurality of application programs of cross-cloud server host session, copied data first arrives at a local computer of the user from one cloud host through a shear plate redirection channel of a remote desktop and then is transmitted to another cloud host from the local computer of the user, so that the transmission speed is low, and the data leakage is easily caused.
In order to solve the technical problems, the invention adopts the technical scheme that:
the method for copying and pasting among a plurality of cloud application programs of cross-cloud server host session comprises the following steps:
s1: respectively setting a clipboard agent program on each cloud server host connected with a user, and automatically starting the clipboard agent program in a user session context on each cloud server host which the user logs in currently;
s2: through a subscription mechanism of the message server, when a user is connected to each cloud server host and opens a cloud application window, a subscription queue is created on the message queue server; the number of the queues is the same as that of the cloud server hosts of the user session, all the queues use the same theme key characters to form a broadcast group, and when any queue externally broadcasts the information of the node through the message server, other queues in the same broadcast group can receive the information;
s3: when a user executes copy operation in the context of the session A, the clipboard agent program in the session A broadcasts the list of the copied format name, and then the clipboard agent programs on other cloud server hosts connected with the current user set respective system clipboards by using the declared clipboard format list and establish TCP network connection with the clipboard agent program in the session A;
s4: when the user session B executes the pasting operation, the clipboard agent program in the session B initiates a clipboard data request to the clipboard agent program in the session A by utilizing the pre-established TCP connection, and finally, the obtained clipboard data is put into a system clipboard of the cloud server host for obtaining a window initiating the pasting action.
The clipboard grouping and sharing technique allows the same user to connect to multiple cloud server hosts simultaneously, the cloud application windows running on a plurality of remote hosts are opened and used simultaneously, the share of the cloud end of the clipboard among the windows is realized, the data format complete set of the clipboard comprising characters and images is supported, thereby realizing the user-level clipboard copy and paste operation on the cloud application window of the cross-cloud server host, and the user using the cloud application can work like daily office, high-speed and safe copy and paste operation is carried out between the application windows of the two cloud server hosts, data transmission is directly transmitted between cloud server hosts without passing through a local computer of a client, usually is a ten-gigabit optical fiber network, the performance is far higher than the user bandwidth of remote access, the data transmission is completely isolated from a local shear plate of the client, and confidential data leakage is prevented.
Further optimization, in step S2, the node information that is queued to be broadcast to the outside by the message server includes a cloud server host name, a TCP, and a UDP port number;
the broadcast group is a clipboard sharing group, and all clipboard agents in the same sharing group share TCP and UDP port numbers monitored by each other; the TCP layer is suitable for mass data transmission and is used for clipboard data transmission; the UDP layer is suitable for short message transport and is mainly used for clipboard format declaration.
Further optimization, the specific method of step S3 includes: when a user performs copy operation in the session A, the clipboard agent program of the session A monitors the clipboard copy action, then the copied clipboard format list sends out a statement through UDP, and the clipboard agent programs on other cloud server hosts use the declared clipboard format list to set respective system clipboards; the clipboard agent of session a merely declares ownership of the clipboard data source and does not pass the clipboard data to clipboard agents that are passed to other cloud server hosts.
The clipboard mechanism at the bottom of the Windows operating system adopts a delayed loading technology, when a copy action is performed in a certain application program window, an application program can select to temporarily register the cut data in the memory space of the system clipboard, and does not perform a real memory data copy action, and until a user performs an actual paste action, the operating system can inform the application program providing the data to store the data in the clipboard space. The time slot of delayed loading is utilized to monitor and take over the shearing action of the system, the sheared data format is broadcasted to all other cloud server hosts of the user session, when the user pastes on other hosts, the data to be transmitted is copied across the cloud server hosts through the high-bandwidth network channel located at the cloud end, and therefore high-performance cloud shear board experience is provided for the user who works across the cloud server hosts. When two applications running on different cloud server hosts are opened, high-speed and safe data copying and pasting operation can be performed like daily operation.
Further optimization, the specific method of step S4 includes: when a user pastes a certain window in a session B, a clipboard agent program of the session B receives a data rendering request corresponding to a certain clipboard format, and initiates a clipboard real data request to a declaration party session A of clipboard data through TCP connection; and the clipboard agent program in the session A calls a system API to acquire system clipboard data and replies the system clipboard data to the session B, and the session B renders the received real clipboard data in a certain format into the system clipboard, so that a user can see the pasted result.
Further, in step S2, the keyword used by the queue is a user name.
The technical scheme of the invention has the beneficial effects that:
in the invention, the clipboard grouping and sharing technology can enable the same user to be connected to a plurality of cloud server hosts at the same time, and open and use the cloud application windows running on a plurality of remote hosts, thereby realizing the clipboard cloud sharing between the windows, and supporting the clipboard data format complete set including characters and images, thereby realizing the user-level clipboard copying and pasting operation on the cloud application windows of the cross-cloud server hosts, and the user using the cloud application can carry out high-speed and safe copying and pasting operation between the application windows of two cloud server hosts like daily office work, wherein the data transmission does not need to pass through a client local computer, but is directly transmitted between the cloud server hosts, generally is a ten-trillion optical fiber network, has the performance far higher than the user bandwidth accessed remotely, and is completely isolated from the local clipboard of the client, confidential data is prevented from being leaked.
Drawings
Fig. 1 is a schematic view of a prior art "cloud shear plate".
Fig. 2 is a route diagram of a method for performing copy and paste among a plurality of cloud applications across a cloud server host session according to the present invention.
Fig. 3 is a schematic diagram illustrating a message queue created on a message queue server after a user connects to each cloud server host.
Fig. 4 is a block flow diagram of a copy and paste process between two cloud applications across a cloud server host session.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The method for copying and pasting among a plurality of cloud applications of a cross-cloud server host session comprises the following steps, as shown in fig. 2:
s1: and respectively setting a clipboard agent program on each cloud server host connected with the user, and automatically starting the clipboard agent program in the user session context of each cloud server host which the user logs in currently.
S2: through a subscription mechanism of the message server, when a user is connected to each cloud server host and opens a cloud application window, a subscription queue is created on the message queue server; the number of the message queues is the same as that of the cloud server hosts of the user session, all the queues use the same topic key word to form a broadcast group, the key word is a user name, so that as long as the session under the user name is in the same clipboard sharing group, the clipboard agents in the same clipboard sharing group can firstly share TCP and UDP port numbers which are monitored by each other through the mechanism. The TCP layer is suitable for large data transmission and therefore for clipboard data transmission, and the UDP layer is suitable for short message transmission and therefore mainly used for clipboard format declaration. As shown in fig. 3, including a user 1 and a user 2, the user 1 and the user 2 both have a conversation with the cloud server host 1 and the cloud server host 2, two message queues are formed between the user 1 and the cloud server host 2, the two message queues form a clipboard sharing group using "user 1" as a topic keyword, two message queues are formed between the user 2 and the cloud server host 1 and the cloud server host 2, and the two message queues form a clipboard sharing group using "user 2" as a topic keyword.
S3: when a user executes copy operation in the context of session a, the clipboard agent program in session a broadcasts the list of the format name copied this time, and the clipboard agent programs on other cloud server hosts connected by the current user set their respective system clipboards by using the declared clipboard format list, and establish TCP network connection with the clipboard agent program in session a.
S4: when a user executes a paste operation on the session B, the clipboard agent program in the session B initiates a clipboard data request to the clipboard agent program in the session A by utilizing a pre-established TCP connection, and finally, the taken clipboard data is put into a system clipboard of the cloud server host for obtaining a window initiating a paste behavior.
In the invention, the clipboard grouping and sharing technology can enable the same user to be connected to a plurality of cloud server hosts at the same time, and open and use the cloud application windows running on a plurality of remote hosts, thereby realizing the clipboard cloud sharing among the windows, and supporting the clipboard data format complete set including characters and images, thereby realizing the user-level clipboard copying and pasting operation on the cloud application windows of the cross-cloud server hosts. Because data transmission in the whole process occurs between the virtual machines and has no relation with a locally connected client, the current user can use the function of the shared shear plate no matter which remote connection protocol is used for logging in, even the Web console is connected, the transmission speed is not influenced by the position of the client, the high-speed network of the server can be fully utilized, and high speed and confidentiality are achieved.
The clipboard mechanism at the bottom of the Windows operating system adopts a delayed loading technology, when a copy action is performed in a certain application program window, an application program can select to temporarily register the cut data in the memory space of the system clipboard, and does not perform a real memory data copy action, and until a user performs an actual paste action, the operating system can inform the application program providing the data to store the data in the clipboard space. The time slot of delayed loading is utilized to monitor and take over the shearing action of the system, the sheared data format is broadcasted to all other cloud server hosts of the user session, when the user pastes on other hosts, the data to be transmitted is copied across the cloud server hosts through the high-bandwidth network channel located at the cloud end, and therefore high-performance cloud shear board experience is provided for the user who works across the cloud server hosts. When two applications running on different cloud server hosts are opened, high-speed and safe data copying and pasting operation can be performed like daily operation.
The key steps of the copy and paste process performed by the user among the cloud applications of the multiple cross-cloud server host sessions are as follows, as shown in fig. 4, the number labels in fig. 4 correspond to the following steps:
1. a session A is established between a certain user and a cloud server host, and information of the node is broadcasted outwards through a message server, wherein the information comprises a host name and a TCP/UDP port number;
2. the clipboard agent program in the conversation B receives the broadcast from the conversation A and adds the conversation A into the clipboard sharing group;
3. a user performs copy operation in the session A, and a clipboard agent program in the session A monitors clipboard copy action;
4. the clipboard agent program sends out a statement to the clipboard format list which is copied through UDP and sends the statement to a session B;
5. the clipboard agent program in the conversation B sets the clipboard format list declared by the conversation A to the system clipboard, but the actual clipboard data is NULL;
6. a user carries out pasting operation on a certain window in the session B, and an agent process in the session B receives a data rendering request corresponding to a certain clipboard format;
7. the proxy process in the session B initiates a clipboard real data request to the declaration party session A of the clipboard data through TCP connection;
8. the agent process in the session A calls a system API to acquire system clipboard data and replies to the session B;
9. and the session B renders the received real clipboard data in a certain format into the system clipboard, so that the user sees the pasted result.
The above examples are merely illustrative for clarity and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (5)
1. The method for copying and pasting among a plurality of cloud application programs of cross-cloud server host session is characterized by comprising the following steps:
s1: respectively setting a clipboard agent program on each cloud server host connected with a user, and automatically starting the clipboard agent program in a user session context on each cloud server host which the user logs in currently;
s2: when a user connects to each cloud server host and opens a cloud application window, a subscription queue is created on a message server; the number of the queues is the same as that of the cloud server hosts of the user session, all the queues use the same theme key characters to form a broadcast group, and when any queue externally broadcasts the information of the node through the message server, other queues in the same broadcast group can receive the information;
s3: when a user executes copy operation in the context of the session A, the clipboard agent program in the session A broadcasts the list of the copied format name, and then the clipboard agent programs on other cloud server hosts connected with the current user set respective system clipboards by using the declared clipboard format list and establish TCP network connection with the clipboard agent program in the session A;
s4: when a user executes a paste operation on the session B, the clipboard agent program in the session B initiates a clipboard data request to the clipboard agent program in the session A by utilizing a pre-established TCP connection, and finally, the taken clipboard data is put into a system clipboard of the cloud server host for obtaining a window initiating a paste behavior.
2. The method for copy-paste between multiple cloud applications across cloud server host sessions according to claim 1, wherein in step S2, the local node information queued for external broadcast by the message server includes cloud server host name, TCP and UDP port number;
the broadcast group is a clipboard sharing group, and all clipboard agents in the same sharing group share TCP and UDP port numbers monitored by each other; the TCP layer is suitable for mass data transmission and is used for clipboard data transmission; the UDP layer is suitable for short message transport and is mainly used for clipboard format declaration.
3. The method for copy and paste among a plurality of cloud applications across a cloud server hosting session according to claim 2, wherein the specific method of step S3 is as follows: when a user performs copy operation in the session A, the clipboard agent program of the session A monitors the clipboard copy action, then the copied clipboard format list sends out a statement through UDP, and the clipboard agent programs on other cloud server hosts use the declared clipboard format list to set respective system clipboards; the clipboard agent of session a merely declares ownership of the clipboard data source and does not pass the clipboard data to clipboard agents that are passed to other cloud server hosts.
4. The method for copy and paste among a plurality of cloud applications across cloud server hosting sessions according to claim 3, wherein the specific method of step S4 is as follows: when a user pastes a certain window in a session B, a clipboard agent program of the session B receives a data rendering request corresponding to a certain clipboard format, and initiates a clipboard real data request to a declaration party session A of clipboard data through TCP connection; and the clipboard agent program in the session A calls a system API to acquire system clipboard data and replies the system clipboard data to the session B, and the session B renders the received real clipboard data in a certain format into the system clipboard, so that a user can see the pasted result.
5. The method for copy-paste between cloud applications in multiple cross-cloud server host sessions according to any of claims 1 to 4, wherein in the step S2, the keyword used by the queue is a user name.
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| CN114095280B (en) * | 2022-01-20 | 2022-04-19 | 苏州浪潮智能科技有限公司 | Cloud platform server communication channel construction method, communication method, device and server |
| CN115617540A (en) * | 2022-09-20 | 2023-01-17 | 阿里巴巴（中国）有限公司 | Method, device and system for realizing cloud clipboard and storage medium |
| CN115543663B (en) * | 2022-12-01 | 2023-08-01 | 北京志翔科技股份有限公司 | Data processing method, device, electronic equipment and storage medium |
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