Microsoft Technology Licensing, LLC

Roger Duncan Seielstad

Peter Alexi Gurevich

Alaa H Abdelhalim

Richard Thomas Russo

Aaron Matthew Tyler

Chandan Rama Reddy

Manoj Krishna Ghosh

Bruce L Green

Blaine Young

Kevin Eugene Mason

Jonathan Peary Morris

Jeffrey Paul Jensen

P Daniel Suberviola, Ii

Carla Dunagan Cetina

Vittal Pai

Jimison Samuel Turpin

Andrew Sveikauskas

Described herein are various principles for operating transfer protocols using adaptive flow control techniques. In accordance with some of these principles, a client may adaptively negotiate with a server regarding a window size to use when communicating datagrams using a connectionless content unit transfer protocol like the Trivial File Transfer Protocol (TFTP). In some implementations, a client may inform a server whether to increase or decrease a window size. In these implementations, the client may increase the window size upon determining that a previous window size has led to successful transfer of content without any loss of datagrams and the client may decrease the window size upon detecting a loss of a datagram. Because of the limited resources available in some environments in which these techniques may be used, in some implementations a window size may be increased by small amounts but may be decreased drastically upon detecting a loss.

Client-adjustable window size for connectionless transfer protocols

A system and a process for deploying a computer file involves a client computer applying the computer file concurrently with downloading the computer file from a file server. The concurrent operations can be performed even when the data of the computer file is downloaded out of order. The computer file includes a plurality of file segments. The client computer obtains information defining the file segments and monitors the received data of the computer file during downloading. When downloading of a file segment is complete, the client computer applies the completed segment concurrently with receiving other segments of the computer file from the file server. The process can be used when the computer file is downloaded using a multicast protocol, but is not limited to use with multicast protocols. The client computer can request only needed segments of the computer file.

Concurrently applying an image file while it is being downloaded using a multicast protocol

Described herein are various principles for operating a connectionless content unit transfer protocol to transmit content of a content unit to multiple clients using a shared buffer. A server may transfer content of one or more content units to each of multiple clients upon request from the client using individual buffers. For each content unit being transferred, the server may maintain a count of the aggregate size of buffers for transferring content of that content unit. If the server determines that the aggregate size of the buffers transmitting a particular content unit is larger than the content unit itself, the server may establish a shared buffer for transferring that content unit to clients. A server using a shared buffer in this manner may transfer content of the content unit to clients using the shared buffer until all requesting clients have received the content unit.

Shared buffer for connectionless transfer protocols

Systems, methods, and computer media for loading initial maximum transmission unit (MTU) information and determining a destination host PMTU are provided. PMTU is the maximum data unit size that can be transmitted from a source host to a destination host because of a limiting component located somewhere in the path. Initial MTU values are determined from local and network sources, including a central repository, and loaded. A PMTU is then determined for a path between a source host and destination host by selecting an MTU value from the available values. If no MTU values are available for a destination host, a default value is used.

Single-interface dynamic MTU control

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Roger Duncan Seielstad