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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;
/**
* nsIUploadChannel
*
* A channel may optionally implement this interface if it supports the
* notion of uploading a data stream. The upload stream may only be set
* prior to the invocation of asyncOpen on the channel.
*/
[scriptable, uuid(5cfe15bd-5adb-4a7f-9e55-4f5a67d15794)]
interface nsIUploadChannel : nsISupports
{
/**
* Sets a stream to be uploaded by this channel.
*
* Most implementations of this interface require that the stream:
* (1) implement threadsafe addRef and release
* (2) implement nsIInputStream::readSegments
* (3) implement nsISeekableStream::seek
*
* History here is that we need to support both streams that already have
* headers (e.g., Content-Type and Content-Length) information prepended to
* the stream (by plugins) as well as clients (composer, uploading
* application) that want to upload data streams without any knowledge of
* protocol specifications. For this reason, we have a special meaning
* for the aContentType parameter (see below).
*
* @param aStream
* The stream to be uploaded by this channel.
* @param aContentType
* If aContentType is empty, the protocol will assume that no
* content headers are to be added to the uploaded stream and that
* any required headers are already encoded in the stream. In the
* case of HTTP, if this parameter is non-empty, then its value will
* replace any existing Content-Type header on the HTTP request.
* In the case of FTP and FILE, this parameter is ignored.
* @param aContentLength
* A value of -1 indicates that the length of the stream should be
* determined by calling the stream's |available| method.
*/
void setUploadStream(in nsIInputStream aStream,
in ACString aContentType,
in long long aContentLength);
/**
* Get the stream (to be) uploaded by this channel.
*/
readonly attribute nsIInputStream uploadStream;
};