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87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef _nsIProtocolInstance_h_
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#define _nsIProtocolInstance_h_
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#include "nsISupports.h"
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class nsIInputStream;
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/*
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The nsIProtocolInstance class is a common interface to all protocol
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functionality. This base interface will support at getting the input
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stream and the outputstream for the "connection"
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There are still issues on what is the most common interface for the
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extreme cases of an interactive protocol like HTTP vs. events based
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one like SMTP/IMAP. This interface will probably go thru some
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redesigning.
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-Gagan Saksena 03/15/99
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*/
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class nsIProtocolInstance : public nsISupports
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{
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public:
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/*
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The GetInputStream function. Note that this function is not a const
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and calling it may result in a state change for the protocol instance.
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Its upto the protocol to reflect an already open input stream through
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the return methods.
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*/
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NS_IMETHOD GetInputStream( nsIInputStream* *o_Stream) = 0;
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/*
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The interrupt function for stopping an active instance.
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*/
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NS_IMETHOD Interrupt(void) = 0;
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/*
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The load function that makes the actual attempt to starts the
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retrieval process. Depending upon the protocol's implementation
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this function may open the network connection.
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*/
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NS_IMETHOD Load(void) = 0;
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static const nsIID& GetIID() {
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// {3594D180-CB85-11d2-A1BA-444553540000}
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static const nsIID NS_IProtocolInstance_IID =
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{ 0x3594d180, 0xcb85, 0x11d2, { 0xa1, 0xba, 0x44, 0x45, 0x53, 0x54, 0x0, 0x0 } };
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return NS_IProtocolInstance_IID;
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};
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protected:
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/*
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Protocol's check for connection status. Once Load is called, this
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should return true. TODO THINK
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NS_IMETHOD_(PRBool) IsConnected(void) = 0;
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*/
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};
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//Possible errors
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#define NS_ERROR_ALREADY_CONNECTED NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_NETWORK, 150);
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#endif /* _nsIProtocolInstance_h_ */
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