1 Introduction

This document is a specification for the Background Intelligent Transfer Service (BITS) Upload Protocol. This protocol is used to transfer large payloads from a client to a server or server to client over networks with frequent disconnections and to send notifications from the server to a server application about the availability of uploaded payloads. This protocol is layered on top of HTTP 1.1 and uses several standard HTTP headers and defines some new headers.

Sections 1.5, 1.8, 1.9, 2, and 3 of this specification are normative. All other sections and examples in this specification are informative.

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