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comparison: netwerk/base/public/nsITraceableChannel.idl
netwerk/base/public/nsITraceableChannel.idl
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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "nsISupports.idl" | |
| 7 | |
| 8 interface nsIStreamListener; | |
| 9 | |
| 10 /** | |
| 11 * A channel implementing this interface allows one to intercept its data by | |
| 12 * inserting intermediate stream listeners. | |
| 13 */ | |
| 14 [scriptable, uuid(68167b0b-ef34-4d79-a09a-8045f7c5140e)] | |
| 15 interface nsITraceableChannel : nsISupports | |
| 16 { | |
| 17 /* | |
| 18 * Replace the channel's listener with a new one, and return the listener | |
| 19 * the channel used to have. The new listener intercepts OnStartRequest, | |
| 20 * OnDataAvailable and OnStopRequest calls and must pass them to | |
| 21 * the original listener after examination. If multiple callers replace | |
| 22 * the channel's listener, a chain of listeners is created. | |
| 23 * The caller of setNewListener has no way to control at which place | |
| 24 * in the chain its listener is placed. | |
| 25 * | |
| 26 * Note: The caller of setNewListener must not delay passing | |
| 27 * OnStartRequest to the original listener. | |
| 28 * | |
| 29 * Note2: A channel may restrict when the listener can be replaced. | |
| 30 * It is not recommended to allow listener replacement after OnStartRequest | |
| 31 * has been called. | |
| 32 */ | |
| 33 nsIStreamListener setNewListener(in nsIStreamListener aListener); | |
| 34 }; |
