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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsISupports.idl"
+
+interface nsIInputStream;
+interface nsIRunnable;
+
+[scriptable, uuid(2f712b52-19c5-4e0c-9e8f-b5c7c3b67049)]
+interface nsIUploadChannel2 : nsISupports
+{
+ /**
+ * Sets a stream to be uploaded by this channel with the specified
+ * Content-Type and Content-Length header values.
+ *
+ * Most implementations of this interface require that the stream:
+ * (1) implement threadsafe addRef and release
+ * (2) implement nsIInputStream::readSegments
+ * (3) implement nsISeekableStream::seek
+ *
+ * @param aStream
+ * The stream to be uploaded by this channel.
+ * @param aContentType
+ * This value will replace any existing Content-Type
+ * header on the HTTP request, regardless of whether
+ * or not its empty.
+ * @param aContentLength
+ * A value of -1 indicates that the length of the stream should be
+ * determined by calling the stream's |available| method.
+ * @param aMethod
+ * The HTTP request method to set on the stream.
+ * @param aStreamHasHeaders
+ * True if the stream already contains headers for the HTTP request.
+ */
+ void explicitSetUploadStream(in nsIInputStream aStream,
+ in ACString aContentType,
+ in long long aContentLength,
+ in ACString aMethod,
+ in boolean aStreamHasHeaders);
+
+ /**
+ * Value of aStreamHasHeaders from the last successful call to
+ * explicitSetUploadStream. TRUE indicates the attached upload stream
+ * contians request headers.
+ */
+ readonly attribute boolean uploadStreamHasHeaders;
+
+ /**
+ * Ensure the upload stream, if any, is cloneable. This may involve
+ * async copying, so a callback runnable must be provided. It will
+ * invoked on the current thread when the upload stream is ready
+ * for cloning. If the stream is already cloneable, then the callback
+ * will be invoked synchronously.
+ */
+ [noscript]
+ void ensureUploadStreamIsCloneable(in nsIRunnable aCallback);
+
+ /**
+ * Clones the upload stream. May return failure if the upload stream
+ * is not cloneable. If this is not acceptable, use the
+ * ensureUploadStreamIsCloneable() method first.
+ */
+ [noscript]
+ nsIInputStream cloneUploadStream();
+};