Abstract: A method for playing multimedia on virtual desktop includes the following steps: a cloud-based system receives a virtual desktop request from a client. The cloud-based system provides a virtual desktop to the client through a virtual desktop connection for the client to display. The cloud-based system receives a request of multimedia streaming through the virtual desktop connection for obtaining a target multimedia file to display on the virtual desktop of the client. The cloud-based system obtains the target multimedia file. The cloud-based system builds a PUSH connection with the client and transmits the target multimedia file to the client through the PUSH connection for playing the target multimedia file on the virtual desktop of the client.

Abstract: A method for opening a file on a virtual desktop for a cloud-based system includes the following steps: The at least one external cloud server does not belong to the cloud-based system. A virtual desktop is provided to a client. The client displays the virtual desktop by a browser. An open-file request for opening a target file is received through the virtual desktop. A corresponding application service, which is utilized for opening the target file, is searched among the external application services. When the target file is an internal file stored in the cloud-based system and the corresponding application service is provided by the at least one external cloud server, the at least one external cloud server is driven to provide the corresponding application service for opening the target file, and the opened target file is displayed on the virtual desktop of the client.

Abstract: In a method for providing an application by a virtual machine (VM), an application requesting instruction for requesting a target application is received from a client. An available VM is assigned according to the application requesting instruction. A target-application executable file corresponding to the target application is searched from several candidate executable files stored in an executable-file storage pool. The target-application executable file is mounted to the available VM. The mounted target-application executable file is executed through the available VM.

Abstract: A method for opening a file on a virtual desktop for a cloud-based system includes the following steps: The at least one external cloud server does not belong to the cloud-based system. A virtual desktop is provided to a client. The client displays the virtual desktop by a browser. An open-file request for opening a target file is received through the virtual desktop. A corresponding application service, which is utilized for opening the target file, is searched among the external application services. When the target file is an internal file stored in the cloud-based system and the corresponding application service is provided by the at least one external cloud server, the at least one external cloud server is driven to provide the corresponding application service for opening the target file, and the opened target file is displayed on the virtual desktop of the client.

Abstract: A method for playing multimedia on virtual desktop includes the following steps: a cloud-based system receives a virtual desktop request from a client. The cloud-based system provides a virtual desktop to the client through a virtual desktop connection for the client to display. The cloud-based system receives a request of multimedia streaming through the virtual desktop connection for obtaining a target multimedia file to display on the virtual desktop of the client. The cloud-based system obtains the target multimedia file. The cloud-based system builds a PUSH connection with the client and transmits the target to multimedia file to the client through the PUSH connection for playing the target multimedia file on the virtual desktop of the client.