зеркало из https://github.com/mozilla/gecko-dev.git
193 строки
8.1 KiB
Plaintext
193 строки
8.1 KiB
Plaintext
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is Mozilla.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 2002
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Darin Fisher <darin@netscape.com>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#include "nsISupports.idl"
|
|
|
|
interface nsIInputStream;
|
|
interface nsIOutputStream;
|
|
interface nsITransportEventSink;
|
|
interface nsIEventTarget;
|
|
|
|
/**
|
|
* nsITransport
|
|
*
|
|
* This interface provides a common way of accessing i/o streams connected
|
|
* to some resource. This interface does not in any way specify the resource.
|
|
* It provides methods to open blocking or non-blocking, buffered or unbuffered
|
|
* streams to the resource. The name "transport" is meant to connote the
|
|
* inherent data transfer implied by this interface (i.e., data is being
|
|
* transfered in some fashion via the streams exposed by this interface).
|
|
*
|
|
* A transport can have an event sink associated with it. The event sink
|
|
* receives transport-specific events as the transfer is occuring. For a
|
|
* socket transport, these events can include status about the connection.
|
|
* See nsISocketTransport for more info about socket transport specifics.
|
|
*/
|
|
[scriptable, uuid(cbb0baeb-5fcb-408b-a2be-9f8fc98d0af1)]
|
|
interface nsITransport : nsISupports
|
|
{
|
|
/**
|
|
* Open flags.
|
|
*/
|
|
const unsigned long OPEN_BLOCKING = 1<<0;
|
|
const unsigned long OPEN_UNBUFFERED = 1<<1;
|
|
|
|
/**
|
|
* Open an input stream on this transport.
|
|
*
|
|
* Flags have the following meaning:
|
|
*
|
|
* OPEN_BLOCKING
|
|
* If specified, then the resulting stream will have blocking stream
|
|
* semantics. This means that if the stream has no data and is not
|
|
* closed, then reading from it will block the calling thread until
|
|
* at least one byte is available or until the stream is closed.
|
|
* If this flag is NOT specified, then the stream has non-blocking
|
|
* stream semantics. This means that if the stream has no data and is
|
|
* not closed, then reading from it returns NS_BASE_STREAM_WOULD_BLOCK.
|
|
* In addition, in non-blocking mode, the stream is guaranteed to
|
|
* support nsIAsyncInputStream. This interface allows the consumer of
|
|
* the stream to be notified when the stream can again be read.
|
|
*
|
|
* OPEN_UNBUFFERED
|
|
* If specified, the resulting stream may not support ReadSegments.
|
|
* ReadSegments is only gauranteed to be implemented when this flag is
|
|
* NOT specified.
|
|
*
|
|
* @param aFlags
|
|
* optional transport specific flags.
|
|
* @param aSegmentSize
|
|
* if OPEN_UNBUFFERED is not set, then this parameter specifies the
|
|
* size of each buffer segment (pass 0 to use default value).
|
|
* @param aSegmentCount
|
|
* if OPEN_UNBUFFERED is not set, then this parameter specifies the
|
|
* maximum number of buffer segments (pass 0 to use default value).
|
|
*/
|
|
nsIInputStream openInputStream(in unsigned long aFlags,
|
|
in unsigned long aSegmentSize,
|
|
in unsigned long aSegmentCount);
|
|
|
|
/**
|
|
* Open an output stream on this transport.
|
|
*
|
|
* Flags have the following meaning:
|
|
*
|
|
* OPEN_BLOCKING
|
|
* If specified, then the resulting stream will have blocking stream
|
|
* semantics. This means that if the stream is full and is not closed,
|
|
* then writing to it will block the calling thread until ALL of the
|
|
* data can be written or until the stream is closed. If this flag is
|
|
* NOT specified, then the stream has non-blocking stream semantics.
|
|
* This means that if the stream is full and is not closed, then writing
|
|
* to it returns NS_BASE_STREAM_WOULD_BLOCK. In addition, in non-
|
|
* blocking mode, the stream is guaranteed to support
|
|
* nsIAsyncOutputStream. This interface allows the consumer of the
|
|
* stream to be notified when the stream can again accept more data.
|
|
*
|
|
* OPEN_UNBUFFERED
|
|
* If specified, the resulting stream may not support WriteSegments and
|
|
* WriteFrom. WriteSegments and WriteFrom are only gauranteed to be
|
|
* implemented when this flag is NOT specified.
|
|
*
|
|
* @param aFlags
|
|
* optional transport specific flags.
|
|
* @param aSegmentSize
|
|
* if OPEN_UNBUFFERED is not set, then this parameter specifies the
|
|
* size of each buffer segment (pass 0 to use default value).
|
|
* @param aSegmentCount
|
|
* if OPEN_UNBUFFERED is not set, then this parameter specifies the
|
|
* maximum number of buffer segments (pass 0 to use default value).
|
|
*/
|
|
nsIOutputStream openOutputStream(in unsigned long aFlags,
|
|
in unsigned long aSegmentSize,
|
|
in unsigned long aSegmentCount);
|
|
|
|
/**
|
|
* Close the transport and any open streams.
|
|
*
|
|
* @param aReason
|
|
* the reason for closing the stream.
|
|
*/
|
|
void close(in nsresult aReason);
|
|
|
|
/**
|
|
* Set the transport event sink.
|
|
*
|
|
* @param aSink
|
|
* receives transport layer notifications
|
|
* @param aEventTarget
|
|
* indicates the event target to which the notifications should
|
|
* be delivered. if NULL, then the notifications may occur on
|
|
* any thread.
|
|
*/
|
|
void setEventSink(in nsITransportEventSink aSink,
|
|
in nsIEventTarget aEventTarget);
|
|
|
|
/**
|
|
* Generic nsITransportEventSink status codes. nsITransport
|
|
* implementations may override these status codes with their own more
|
|
* specific status codes (e.g., see nsISocketTransport).
|
|
*/
|
|
const unsigned long STATUS_READING = 0x804b0008;
|
|
const unsigned long STATUS_WRITING = 0x804b0009;
|
|
};
|
|
|
|
[scriptable, uuid(561de8af-1b74-4cd4-8479-89447d48185c)]
|
|
interface nsITransportEventSink : nsISupports
|
|
{
|
|
/**
|
|
* Transport status notification.
|
|
*
|
|
* @param aTransport
|
|
* the transport sending this status notification.
|
|
* @param aStatus
|
|
* the transport status (resolvable to a string using
|
|
* nsIErrorService). See nsISocketTransport for socket specific
|
|
* status codes and more comments.
|
|
* @param aProgress
|
|
* the amount of data either read or written depending on the value
|
|
* of the status code. this value is relative to aProgressMax.
|
|
* @param aProgressMax
|
|
* the maximum amount of data that will be read or written. if
|
|
* unknown, 0xFFFFFFFF will be passed.
|
|
*/
|
|
void onTransportStatus(in nsITransport aTransport,
|
|
in nsresult aStatus,
|
|
in unsigned long aProgress,
|
|
in unsigned long aProgressMax);
|
|
};
|