Vmware, Inc.

Omnissa, LLC

Petrochina Company Limited

Weigang Huang

Kun Shi

Hui Zhang

Hui Yuan

Mingsheng Zang

Zhongzheng Tu

Huiyong Huo

Yueting Zhang

Mangui She

Jinxing Hu

Feng Yan

Haiwei Zhao

Wu Bai

Qi An

Eric Yueting Zhang

Yong Hu

Yongxin Han

Gang Si

Xizhe Li

Xuan Xu

Yunsheng Wei

Yujin Wan

Chunyan Jiao

Zhenhua Guo

Haifa Tang

Guangzhen Chu

Chuansheng Zhang

Yunhe Su

System and method are described for dynamically switching redirection of features between a first and a second virtual desktop that are accessed by a client in nested mode. To connect to the desktops in the nested configuration, the client can establish a first session on the first virtual desktop and then establish a session on the second virtual desktop within the first desktop. A connection can be established between the client and an agent in the first desktop for exchanging feature redirection data corresponding to a feature such as USB, clipboard, etc., and the feature can subsequently be redirected to the first desktop by exchanging corresponding data over the connection. A request can be received to switch the feature redirection to the second desktop. In response to the request, the client can establish a connection for redirecting the feature with an agent in the second desktop and the feature can be subsequently redirected to the second desktop by exchanging corresponding data over the new connection. As a result, feature redirection can be switched between desktops dynamically without terminating either virtual desktop session.

Dynamic connection switching in virtual desktops under nested mode

The disclosure provides techniques for storage device input/output (I/O) performance improvement in a remote computing environment. Embodiments include creating, on a remote device that is remote from a client device, a virtual storage device corresponding to a physical storage device that is located on the client device. Embodiments include receiving, by a driver on the remote device, a request from an application on the remote device to perform an input or output operation with respect to the virtual storage device. Embodiments include sending, by the remote device, a block-level input or output operation to the client device based on the request. Embodiments include receiving, by the remote device, a result of the block-level input or output operation from the client device. Embodiments include providing, by the driver on the remote device, to the application, a response to the request based on the result of the block-level input or output operation.

Storage device I/O performance in remote computing environments

The disclosure provides a method of associating thread identifiers (IDs) to input/output (I/O) requests in a remote computing environment. The method generally includes receiving, by a mini-filter on a remote device that is remote from a client device, a request from an application on the remote device to access resources at the client device, determining, by the mini-filter, a thread identifier (ID) associated with the request, the thread ID corresponding to an application thread of the application that generated the request, determining, by the mini-filter, one or more parameters of the request, and transmitting, by the mini-filter, to a redirection server process on the remote device, a message comprising the thread ID and the one or more parameters of the request, wherein the thread ID and the one or more parameters of the request are added to a cache maintained by the redirection server process.

Input/output (I/O) performance in remote computing environments using a mini-filter driver

System and methods are provided for improved directory enumeration on shared client directories in virtual desktops. A merged I/O request containing multiple expected I/O requests for enumerating a directory can be produced on the virtual desktop. The merged I/O request can be conveyed to the client device and a merged I/O response containing multiple I/O responses to the expected I/O requests can be received from the client device. The received I/O responses can be stored in cache memory on the virtual desktop and used to respond to subsequent queries for enumerating the directory on the virtual desktop.

Merged input/output for accelerating directory listing phase in client drive redirection

A scanner redirection method includes the steps of: receiving from an application running on a host server, a request for scanner properties; acquiring properties of the physical scanner; converting the properties of the physical scanner that are described according to a first scanning protocol to properties of the physical scanner that are described according to a second scanning protocol; transmitting the properties of the physical scanner that are described according to the second scanning protocol to the application; in response to detecting a user selection made on an image of a user interface, transmitting the user selection to the application; and in response to the user selection, receiving from the application, a request for a scanned image, and transmitting a request to an image capture core to acquire the scanned image from the physical scanner.

Method to realize scanner redirection between a client and an agent using different scanning protocols

A scanner redirection method for a remote desktop system that includes a client computing device that has running therein a scanner redirection module, and a host server, the scanner redirection module including a data source manager for communicating with a data source that is configured to communicate with a physical scanner, includes the steps of: receiving from an application running on the host server, a request for a scanned image; in response to the request for the scanned image, transmitting to the data source a request to acquire the scanned image from the physical scanner; and upon receiving the scanned image from the data source, transmitting the scanned image to the application.

Method to realize scanner redirection between a client and an agent

A scanning preview method for a remote desktop system that includes a client computing device that has running therein a remote desktop client application including a scanner redirection module, and a host server, the scanner redirection module including a scanner core that is configured to communicate with a physical scanner, includes the steps of: receiving from an application running on the host server, a request for a preview of a scanned image; in response to the request for the preview of the scanned image, transmitting to the scanner core a request to acquire the scanned image from the physical scanner; and upon receiving the scanned image from the scanner core, transmitting the scanned image to the application, and in response thereto, receiving from the application an image of a remote desktop that includes the scanned image.

Scanning preview method for a remote application when using scanner redirection for remote desktop services

A system is described for establishing a nested bridge to improve data exchange between a client device and a second virtual desktop accessed by the client device through a first virtual desktop in a nested mode configuration. The nested bridge can be established between a virtual desktop agent of the first virtual desktop and a virtual desktop client of the second virtual desktop, both of which can run in the first virtual desktop, to enable fast and efficient exchange of data between the agent and client within the first virtual desktop. The nested bridge can be utilized in conjunction with virtual channels connecting the client device to the first virtual desktop and virtual channels connecting the first virtual desktop to the second virtual desktop for exchanging data between the client device and the second virtual desktop to enable various features.

Bridging virtual desktops under nested mode

The disclosure provides an approach for storage device write performance improvement in a remote computing environment. Embodiments include creating, on a remote device that is remote from a client device, a virtual storage device corresponding to a physical storage device physically connected to the client device. Embodiments include receiving, by a driver on the remote device, a request from an application on the remote device to perform a write operation with respect to the virtual storage device. Embodiments include sending, by the remote device, a write operation to the client device based on the request. Embodiments include prior to receiving a confirmation from the client device that the write operation was received or completed, sending, by the driver, to the application, a message indicating that the write operation is complete. Embodiments include receiving, by the driver, based on the message, an additional request to perform an additional write operation.

Storage device write performance in remote computing environments

A method of copying at least first and second files stored in a client computing device to a host server, includes the steps of: generating at the host server a first read I/O request for data of the first file based on responses to pre-read I/O requests for the first file, received from the client computing device; transmitting a merged I/O request that includes the first read I/O request for data of the first file and pre-read I/O requests for the second file from the host server to the client computing device; generating at the host server a second read I/O request for data of the second file based on responses to the pre-read I/O requests for the second file, received from the client computing device; and transmitting the second read I/O request for data of the second file from the host server to the client computing device.

Method to improve copy performance of client drive redirection with per-thread merged input/output

A print driver store is usable for redirection printing in a virtualized computing environment that supports virtual desktops. Native print drivers are uploaded to the print driver store from a client side. When an agent attempts to instantiate a virtual printer at the agent side that corresponds to a physical printer at the client side, the agent checks to determine if a native print driver for the physical printer is installed at the agent side. If the native print driver is not installed, then the agent obtains the native print driver from the print driver store and installs the native print driver at the agent side. The agent completes the instantiation of the virtual printer at the agent side and associates the native print driver with the virtual printer.

Print driver store for redirection printing in a virtualized computing environment

Techniques are described for auditing print content during printer redirection in a virtual desktop. The ability to audit redirected print content allows an organization to pre-define certain sensitive data and to track whether print redirection requests in the virtual desktop environment contain any such sensitive data. If such sensitive data is contained in a printer redirection request, a file is generated containing information about the sensitive data, as well as a watermark that encodes information about the printer redirection request, such the user identifier of the user who initiated the print request and a timestamp of when the print request occurred. The generated file is transmitted to one or more registered recipients.

Print content auditing during printer redirection in virtual desktop environments

System and methods are provided for improved directory enumeration and data copy with shared client directories in virtual desktops by quickly and efficiently retrieving shared directory entries from the client device over a separate fast channel and caching them on the virtual desktop, where the directory entries can be available locally to applications in the virtual desktop for performing directory enumeration. The fast channel can further be utilized for efficiently transferring data in data copy operations between the client device and the virtual desktop.

Optimized directory enumeration and data copy for client drive redirection in virtual desktops

A scanner redirection method for a remote desktop system that includes a client computing device and a host server, includes the steps of: acquiring properties of a physical scanner from a data source; generating a user interface (UI) for the acquired properties of the physical scanner; in response to a first user selection made on the UI, transmitting a request to the physical scanner to update a scanner property that is one of the acquired properties of the physical scanner; and in response to a second user selection made on the UI, receiving from an application running on the host server, a request for a scanned image, transmitting to the data source a request to acquire the scanned image from the physical scanner, and upon receiving the scanned image from the data source, transmitting the scanned image to the application.

Method to use native scanning properties dialog to scan in scanner redirection

The disclosure provides an approach for print redirection in a remote computing environment. Embodiments include receiving, on a remote device, a request to perform a printing task using a printing device associated with a client device. Embodiments include determining, on the remote device, that data associated with the request to perform the printing task exceeds a size threshold. Embodiments include generating, on the remote device, a plurality of data slices based on the data, wherein each respective data slice of the plurality of data slices comprises a respective subset of the data that does not exceed the size threshold. Embodiments include transmitting, from the remote device to the client device, the plurality of data slices as separate transmissions in separate time intervals along with information that allows the data to be reconstructed from the plurality of data slices for performing the printing task on the client device.

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Beijing, China

Weigang Huang