CN102707994A - Method for controlling computer by handheld mobile equipment in local area network - Google Patents

Abstract

The invention discloses a method for controlling a computer with a handheld mobile device in a local area network, the steps of which are: (1) connecting to the local area network; (2) opening the computer terminal service; (3) obtaining the local area network number; (4) constructing available computer information Set; (5) input control password; (6) send CMD command; (7) execute CMD command; (8) send command execution result; (9) release resource. The present invention adopts the CMD command as the network transmission object, which overcomes the problems of high network bandwidth and high network traffic consumption caused by the use of video transmission technology in the prior art, so that the present invention can be applied to environments with high real-time requirements and by calling the CMD command to directly control the computer, it overcomes the single function of the prior art due to the use of virtual mouse and keyboard technology to control the computer, no return result, and the problem of insufficient effective control distance, so that the application range of the present invention is wider.

Description

Method for controlling computer with handheld mobile device in local area network

technical field

The invention belongs to the field of computer technology, and further relates to a method for controlling a computer by a hand-held mobile device based on socket technology and Windows system command prompt window technology in the field of application software development of a hand-held mobile device in a local area network. The invention can be used in the fields of multimedia teaching controlled by a computer, family smart device control, remote office and parental monitoring by using a hand-held mobile device in a local area network.

Background technique

Handheld mobile device control computer means that users use mobile devices to interact with computers. Through the portability and interactive diversity of mobile devices, the input devices and output devices of the computer are expanded and file resources are shared with the computer, so as to facilitate the user's control of the computer.

Currently, there are two common methods for controlling computers with handheld mobile devices: computer control based on real-time video transmission and computer control based on virtual mouse and keyboard.

The existing foreign software "PhoneMyPC" is a typical example of computer control based on real-time video transmission. The software uses video streaming technology to send the current computer screenshot image information to the mobile device application program in real time. The interface is intuitive and friendly, and the user is easy to use. It is currently the most popular mobile device control computer software. The disadvantage of using this software is that, on the one hand, the computer and mobile devices must be connected to the Internet to be connected to each other, and real-time computer desktop video is sent during the use of the software, which requires high network bandwidth and consumes a lot of network traffic . Home mobile devices generally have low bandwidth and expensive traffic. This makes for a choppy user experience and therefore limited use. On the other hand, since the computer end is connected to the Internet, as long as the account password of the mobile device end is correct, the computer can be fully controlled. Make the computer end easy to be hacked, resulting in poor security of the computer end.

In the patent application "a method of controlling a computer through a mobile phone" (patent application number: 200710028902.6, publication number: CN101082889A) filed by Songxunda Zhongke Electronics (Shenzhen) Co., Ltd., a computer control method based on a virtual mouse and keyboard is carried out. detailed introduction. In this method, the control information is sent to the computer, and the control information is converted into a corresponding control key, and the control key is executed on the computer, so that the mobile phone can be reached on any computer with bluetooth function or infrared energy. Control computer effects. The method has the advantages of simple operation, convenient use, reliable transmission and the like. However, the disadvantage of this method is that, on the one hand, the mobile phone does not output information, so that the user cannot remotely control the computer. On the other hand, the function is relatively single, so that the method is used in a small range and is difficult to promote.

Contents of the invention

The purpose of the present invention is to overcome the shortcoming that above-mentioned technology exists, provide a kind of utilization TCP transmission agreement, realize client application program and computer end service program respectively, control computer directly based on command line and Windows message processing mechanism, and in command prompt window Read computer data, effectively reduce the amount of information transmission, provide a smooth user experience and complete control functions.

The technical idea of realizing the present invention is: first connect the handheld mobile device and the computer to the same local area network through Wifi, then search for available computers in the local area network through the handheld mobile device, then send control commands to the computer through the handheld mobile device, and finally the computer Parse control commands and execute corresponding CMD commands.

The present invention comprises the steps:

(1) Connect to LAN

1a) Turn on the wireless router, and start the service function of the wireless router dynamic host setting protocol;

1b) Connect the computer to the wireless router;

1c) Turn on the Wifi function of the handheld mobile device and connect to the wireless LAN access point of the wireless router through the Wifi of the handheld mobile device;

(2) Turn on the computer service

2a) Call the system function to open the listening port of the Socket server on the computer side;

2b) call the system function, and establish a command prompt window process on the computer side;

(3) Obtain the LAN number

3a) Call the system function to obtain the IP address in the network card information of the handheld mobile device;

3b) Determine the address type of the IP address: if the IP address is a Class A address, the subnet mask is 0xFF000000; if the IP address is a Class B address, the subnet mask is 0xFFFF0000; if the IP address is a Class C address, then The subnet mask is 0xFFFFFF00;

3c) performing an AND operation on the subnet mask and the IP address to obtain the network number;

(4) Construct a collection of available computer information

4a) Set the available computer information set at the handheld mobile device as an empty set, and complete the initialization;

4b) 32-bit binary variable i is set to the subnet mask described in step 3b);

4c) i is set to i+1, and i is ANDed with the subnet mask described in step 3b), and then the result of the operation is ORed with the network number calculated in step 3c) to obtain an unidentified network number in the local area network access IP address;

4d) Connect the Socket port of the handheld mobile device to the listening port of the computer-side Socket server corresponding to the IP address;

4e) determine whether the Socket connection is successful: if so, then establish a Socket connection between the handheld mobile device and the computer terminal, and store the information of the Socket connection into the available computer information collection as available computer information; otherwise, perform step 4f);

4f) Determine whether i is less than 0xFFFFFFFF: if so, execute step 4c); otherwise, use the computer information set to complete the construction, execute step 4g);

4g) Display the available computer collection information on the control interface of the mobile device;

(5) Enter the control password

5a) The user selects an available computer to be controlled on the control interface of the handheld mobile device, reserves the Socket connection corresponding to the selected available computer, and releases the remaining Socket connections;

5b) The user enters the control password corresponding to the selected available computer on the control interface of the handheld mobile device;

5c) Send the control password to the computer through the Socket connection established in step 4f);

5e) Judging whether the control password sent to the computer is the same as the original password in the computer database: if yes, the password is correct, and step 6a) is executed; otherwise, the password is wrong, and step 5f) is executed;

5f) Send the password error prompt information to the handheld mobile device through the Socket connection established in step 4f);

5g) Display the password error prompt to the control interface of the handheld mobile device, and perform step 4a);

(6) Send CMD command

6a) The user inputs a command prompt window CMD command on the control interface of the handheld mobile device;

6b) the command prompt window CMD command input by the user is sent to the computer through the Socket connection established in step 4f);

(7) Execute the CMD command

7a) the command prompt window CMD command is written into the input flow of the command prompt window process that step 2b) establishes;

7b) execute the incoming command prompt window CMD command in the command prompt window process that step 2b) establishes;

(8) Send command execution result

8a) read the output stream of the command prompt window process that step 2b) sets up, judge whether there is return result in the command prompt window CMD order: if exist, then return result is sent to handheld mobile device by the Socket connection that step 4f) establishes ; Otherwise, send the character string "NULL" to the handheld mobile device through the Socket connection;

8b) Judging whether the return result sent to the handheld mobile device is the string "NULL": if so, then perform step 9a); otherwise, display the returned information on the control interface of the mobile device;

(9) Release resources

9a) Determine whether the user continues to control the computer: if so, execute step 9b); otherwise execute step 6a);

9b) call system function, release the Socket connection that step 4f) establishes;

9c) call the system function, close step 2b) the command prompt window process established at the computer end;

9d) calling the system function to close the listening port of the Socket server on the computer side.

Compared with the prior art, the present invention has the following advantages:

First, the present invention uses the CMD command as the network transmission object, which overcomes the problems of high network bandwidth and high network traffic consumption in the prior art due to the use of video transmission technology, so that the present invention can be applied to real-time requirements. environment.

Second, the present invention directly controls the computer by calling the CMD command, which overcomes the single function of the prior art due to the use of virtual mouse and keyboard technology to control the computer, no return result, and insufficient effective control distance, making the present invention have a wider range of applications .

Description of drawings

Fig. 1 is a flowchart of the present invention;

Fig. 2 is the CMD command view of the present invention and returns information emulation effect diagram;

Fig. 3 is a simulation effect diagram of displaying process information in the present invention.

Detailed ways

Below in conjunction with accompanying drawing 1 the realization concrete steps of the inventive method are described in detail:

Step 1. Connect to LAN

Turn on the wireless router and start the service function of the wireless router dynamic host setting protocol. At this time, the device connected to the wireless router will be assigned an IP address. If the computer has a wired network adapter, use a twisted pair cable to connect the computer to the LAN port of the wireless router. If the computer has a wireless network adapter, use the wireless network adapter to connect the computer to the wireless LAN access point of the wireless router. Turn on the Wifi function of the handheld mobile device and connect to the wireless LAN access point of the wireless router through the Wifi of the handheld mobile device. At this point, the LAN connection is complete. It can be seen from these steps that the process of establishing a local area network connection in the present invention only needs to be set once in most mobile devices and computers, and then the computers and handheld mobile devices will automatically connect to the router when Wifi is turned on. Using the local area network to connect the control computer not only improves the diversity of connection modes, but also makes the method widely used, and can increase the connection distance and improve the control range through the extended connection of wireless routers, switches and hubs.

Step 2. Start the computer service

Call the system function to open the listening port of the Socket server on the computer. This listening port is used for communication with handheld mobile devices. Create a CMD process on the computer side. This process is used to execute commands from handheld mobile devices.

Step 3. Obtain the LAN number

By calling the system function, the IP address in the network card information of the handheld mobile device is obtained. Determine the address type of the IP address: if the IP address is a class A address, the subnet mask is 0xFF000000; if the IP address is a class B address, the subnet mask is 0xFFFF0000; if the IP address is a class C address, the subnet mask is The mask is 0xFFFFFF00. Perform an AND operation on the subnet mask and the IP address to obtain the network number. The purpose of this step is to determine the LAN number and provide conditions for traversing the IP addresses of the LAN in the subsequent steps.

Step 4. Build a collection of available computer information

Set the available computer information set to an empty set to complete the initialization. The available computer information set is a set of computer information stored in the memory of the handheld mobile device and used to save the computer information for starting the computer service in the local area network. Let i be a 32-bit binary number, and set i to the subnet mask described in step 3. i is a loop variable used to represent the IP address of the LAN. All IP addresses in the local area network can be traversed by cyclically accessing the IP address i. Set i to i+1, perform an AND operation on i and the subnet mask described in step 3, and then OR the operation result with the network number calculated in step 3 to obtain an IP address in the local area network. Connect the Socket port of the handheld mobile device to the listening port of the Socket server on the computer corresponding to the IP address, and judge whether the Socket connection is successful: if so, establish a Socket connection between the handheld mobile device and the computer, and use the information about the Socket connection as available The computer information is stored in the available computer information collection. Determine whether i is less than 0xFFFFFFFF in the local area network: if it is, then repeatedly increment i by 1, then follow the above steps to perform an AND operation on i and the subnet mask described in step 3, and then calculate the result of the operation with step 3 The network number is ORed to obtain an IP address in the local area network until i is equal to 0xFFFFFFFF. Display the collection information of available computers on the control interface of the mobile device. The computer collection information includes information such as the IP address and port number carried in the Socket information. From these steps, it can be seen that the present invention avoids the process of manually inputting the IP address of the computer by the user. If step 2 is set to run automatically when the computer is turned on, then the computer can be controlled by a handheld mobile device only after the computer is turned on.

Step 5. Enter the control password

The user selects an available computer to be controlled on the control interface of the handheld mobile device, reserves the Socket connection corresponding to the selected available computer, and releases the remaining Socket connections. The user inputs the control password corresponding to the selected available computer on the control interface of the handheld mobile device. The control password is a string of 8 to 20 characters without special characters. Send the control password to the computer through the Socket connection established in step 4. The control password can be transmitted encrypted to ensure the security of the present invention. Determine whether the control password sent to the computer is the same as the original password in the computer database: if yes, the computer can be controlled if the password is correct, and go to step 6. Otherwise, the password error prompt information is sent to the handheld mobile device through the Socket connection established in step 4, and the password error prompt is displayed on the control interface of the handheld mobile device, and step 4 is performed. The original password refers to a string of 8 to 20 characters without special characters that the user sets in advance on the computer before controlling the computer. It can be seen from this step that when the user does not know the control password, the computer cannot be controlled. This step improves the security of the present invention and prevents the computer from being controlled by illegal users.

Step 6. Send CMD command

The user inputs a CMD command on the control interface of the handheld mobile device. This CMD command can also be converted from the user's input on the graphical interface of the handheld mobile device, so that the user does not need to memorize a wide variety of CMD commands, reducing the difficulty of the user's use. Send the CMD command entered by the user to the computer through the Socket connection established in step 4. It can be seen from these steps that the network transmission object used in the present invention is a CMD command, which makes the network load of the method smaller.

Step 7. Execute CMD command

Write a CMD command to the input stream of the CMD process established in step 2, and execute the incoming CMD command in the CMD process established in step 2.

Step 8. Send command execution result

Read the output stream of the command prompt window process established in step 2, and judge whether there is a return result in the command prompt window CMD command: if it exists, then the return result is sent to the handheld mobile device through the Socket connection established in step 4; otherwise, the The character string "NULL" is sent to the handheld mobile device through the Socket connection. Judging whether the returned result sent to the handheld mobile device is the string "NULL": if yes, execute step 9; otherwise, display the returned information on the control interface of the handheld mobile device. The returned information of this step can be displayed on the control interface of the control interface of the handheld mobile device in the form of a view, which makes the user experience better. It can be seen from these steps that the present invention has return information when implementing control, and the return information occupies less transmission bandwidth.

Step 9. Release resources

Judge whether the user continues to control the computer: if so, then release the Socket connection established in step 4, close the command prompt window process that step 2 establishes at the computer end and close the listening port of the computer end Socket server described in step 2; otherwise execute step 6.

Below in conjunction with accompanying drawing 2, accompanying drawing 3 is further described to the effect of the present invention:

Accompanying drawing 2, the emulation environment that accompanying drawing 3 realizes is: Intel (R) Core (TM) 2CPU T8100 2.10GHz, Window 7, test program Cellphone Controller, this test program is that the inventor of this patent uses the method development described in this patent test program.

Fig. 2 is a simulation effect diagram of using the present invention to browse disk file information. The user sends the CMD command "dir" to the computer-side service program by clicking the disk drive letter icon on the control interface of the handheld mobile device. The computer-side service program runs the CMD command through the command message prompt window process and sends the returned information to the handheld mobile device. The handheld device-side application program converts the returned file information into view information and returns it to the user. The view information is shown in Figure 2 Content. The function of the scan available host button on the upper left in Figure 2 is to scan the available computer information collection through the Socket, which is equivalent to step 4. The function of the up button is to return to the upper level folder, which is equivalent to using step 6, step 7, and step 8 to execute the CMD command "cd..", and then use step 6, step 7, and step 8 to execute the CMD command "dir" and The returned result is represented in the main part of the figure in the form of a view. The function of the disk information button is to display the disk information, which is equivalent to using step 6, step 7, and step 8 to execute the CMD command "wmiclogicaldisk get DeviceID, DriveType, FileSystem, FreeSpace, Size, VolumeName" and return the result in the form of a view in the figure 2 except for the main body of the three buttons. The main part in Figure 2 except for the three buttons shows the file information under the D: disk, which is the visual return information after using the step 6, step 7, and step 8 to execute the CMD command "dir" under the D: disk. Users can conveniently browse file information and disk information through the invention, and realize viewing of all files in the computer.

Fig. 3 is a simulation effect diagram of browsing process information using the present invention. When the user opens the test program process panel, the handheld mobile device application converts the click operation into the CMD command "wmic process getCSName, Name, HandleCount, Priority, ProcessId, ThreadCount, WorkingSetSize", and uses step 6, step 7, step 8 Execute the CMD command, and then convert the returned process information into table information and return it to the user. The table information is the content shown in Figure 3. Figure 3 shows the process information table of the simulated computer at the current moment, in which the first line is header information, and the rest are specific process information. The meanings represented by the header information are the process ID, the name of the process, the user name of the process, the priority of the process, the number of threads owned by the process, the number of handles of the process, and the size of the working set of the process. The working set unit is KB. Each remaining line shows specific information for each process. The user can also use step 6, step 7, and step 8 to execute the CMD command "wmic process where ProcessId=PID delete" to end the process by long pressing the row where the process information is located. Where PID is the ID of the process to be terminated. The user can conveniently browse the process information and control the process through the invention.

Claims (7)

1. the method for handheld mobile device controlling computer in the LAN is characterized in that, comprises the steps:

(1) connects LAN

1a) open wireless router starts the service function that the wireless router DynamicHost is provided with agreement;

1b) computer is connected to wireless router;

1c) open the Wifi function of handheld mobile device and be connected to the wireless local network connecting point of wireless router through the Wifi of handheld mobile device;

(2) open the computer end service

2a) calling system function, the listening port of unlatching computer end Socket server;

2b) calling system function is set up the command prompt window process in computer end;

(3) obtain LAN number

3a) calling system function obtains the IP address in the handheld mobile device network interface card information;

3b) the address style of judgement IP address: if the IP address is the category-A address, then subnet mask is 0xFF000000; If the IP address is the category-B address, then subnet mask is 0xFFFF0000; If the IP address is C class address, then subnet mask is 0xFFFFFF00;

3c) subnet mask and IP address are carried out drawing network number with computing;

(4) make up available computerized information set

4a) the available computerized information set of handheld mobile device end is made as empty set, accomplishes initialization;

4b) 32 binary variable i are set to step 3b) described subnet mask;

4c) i is set to i+1, and with i and step 3b) the non-of said subnet mask carry out and computing, again with operation result and step 3c) network number of calculating carries out exclusive disjunction and obtains in the LAN one and do not visit the IP address;

4d) the Socket port with handheld mobile device is connected to this IP address corresponding computer end Socket server listening port;

4e) judge that Socket connects whether success: if, then between handheld mobile device and computer end, to set up Socket and is connected, the information that this Socket is connected deposits available computerized information in as available computerized information and gathers; Otherwise, execution in step 4f);

4f) judge that i is whether less than 0xFFFFFFFF: if, execution in step 4c then); Otherwise available computerized information set makes up accomplishes execution in step 4g);

4g) available computer aggregate information is controlled interface display at the mobile device end;

(5) input control password

5a) user need to select the available computer of control on handheld mobile device end control interface, and the Socket that the available computer of choosing is corresponding connects and keeps, and discharges all the other Socket and connects;

5b) user's input control password corresponding on handheld mobile device end control interface with the available computer of choosing;

5c) will control password through step 4f) Socket that sets up connects and is sent to computer;

5e) judge whether original code is identical in the control password be sent to computer and the computer end database: if then password is correct, execution in step 6a); Otherwise, password mistake, execution in step 5f);

5f) with password miscue information through step 4f) Socket that sets up connects and is sent to handheld mobile device;

5g) the password miscue is shown to handheld mobile device end control interface, execution in step 4a);

(6) send the CMD order

6a) user's input command prompt window CMD order on handheld mobile device end control interface;

6b) with the command prompt window CMD order of user input through step 4f) the Socket connection of setting up is sent to computer;

(7) carry out the CMD order

7a) with command prompt window CMD order write step 2b) inlet flow of the command prompt window process set up;

7b) at step 2b) carry out the command prompt window CMD order of importing in the command prompt window process set up;

(8) send command execution results

8a) read step 2b) output stream of the command prompt window process set up, judge whether have return results in the command prompt window CMD order: if exist, then with return results through step 4f) the Socket connection of foundation is sent to handheld mobile device; Otherwise, character string " NULL " is sent to handheld mobile device through this Socket connection;

8b) judge whether the return results be sent to handheld mobile device is character string " NULL ": if, execution in step 9a then); Otherwise, return message is shown to mobile device end control interface;

(9) discharge resource

9a) whether judges continues controlling computer: if, execution in step 9b); Otherwise execution in step 6a);

9b) calling system function, release steps 4f) Socket that sets up connects;

9c) calling system function is closed step 2b) the command prompt window process set up in computer end;

9d) calling system function is closed the listening port of computer end Socket server.

2. the method for handheld mobile device controlling computer in the LAN according to claim 1; It is characterized in that; Step 1b) described computer is meant and has network adapter, Windows operating system is installed and supports Socket programming, the computer of multi-process programming and command prompt window.

3. the method for handheld mobile device controlling computer is characterized in that step 1b in the LAN according to claim 1) the described method that computer is connected to wireless router is to use twisted-pair feeder computer to be connected to the lan port of wireless router.

4. the method for handheld mobile device controlling computer in the LAN according to claim 1; It is characterized in that; Step 1b) the described method that computer is connected to wireless router is, uses wireless network adapter computer to be connected to the wireless local network connecting point of wireless router.

5. the method for handheld mobile device controlling computer is characterized in that step 1c in the LAN according to claim 1) described handheld mobile device is meant to have the Wifi module, supports the handheld mobile device that Socket programming and user interface are programmed.

6. the method for handheld mobile device controlling computer is characterized in that step 5b in the LAN according to claim 1) described control password is meant the character string of 8 to 20 no special character.

7. the method for handheld mobile device controlling computer is characterized in that step 5e in the LAN according to claim 1) described original code is meant, the character string of 8 to 20 no special characters that the user was provided with in computer end before controlling computer in advance.

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