/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * 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
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 * 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.
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 * ***** END LICENSE BLOCK ***** */

#include "nsITransport.idl"

interface nsIInterfaceRequestor;

native PRNetAddr(union PRNetAddr);

/**
 * nsISocketTransport
 *
 * NOTE: Connection setup is triggered by opening an input or output stream,
 * it does not start on its own. Completion of the connection setup is
 * indicated by a STATUS_CONNECTED_TO notification to the event sink (if set).
 *
 * NOTE: This is a free-threaded interface, meaning that the methods on
 * this interface may be called from any thread.
 */
[scriptable, uuid(19c37caa-fb41-4c32-bbf1-c6b31b75d789)]
interface nsISocketTransport : nsITransport 
{
    /**
     * Get the host for the underlying socket connection.
     */
    readonly attribute AUTF8String host;

    /**
     * Get the port for the underlying socket connection.
     */
    readonly attribute long port;

    /** 
     * Returns the IP address of the socket connection peer. This
     * attribute is defined only once a connection has been established.
     */
    [noscript] PRNetAddr getPeerAddr();

    /** 
     * Returns the IP address of the initiating end. This attribute
     * is defined only once a connection has been established.
     */
    [noscript] PRNetAddr getSelfAddr();

    /**
     * Security info object returned from the secure socket provider.  This
     * object supports nsISSLSocketControl, nsITransportSecurityInfo, and
     * possibly other interfaces.
     *
     * This attribute is only available once the socket is connected.
     */
    readonly attribute nsISupports securityInfo;
    
    /**
     * Security notification callbacks passed to the secure socket provider
     * via nsISSLSocketControl at socket creation time.
     *
     * NOTE: this attribute cannot be changed once a stream has been opened.
     */
    attribute nsIInterfaceRequestor securityCallbacks;
   
    /**
     * Test if this socket transport is (still) connected.
     */
    boolean isAlive();

    /**
     * Socket timeouts in seconds.  To specify no timeout, pass PR_UINT32_MAX
     * as aValue to setTimeout.  The implementation may truncate timeout values
     * to a smaller range of values (e.g., 0 to 0xFFFF).
     */
    unsigned long getTimeout(in unsigned long aType);
    void          setTimeout(in unsigned long aType, in unsigned long aValue);

    /**
     * Values for the aType parameter passed to get/setTimeout.
     */
    const unsigned long TIMEOUT_CONNECT    = 0;
    const unsigned long TIMEOUT_READ_WRITE = 1;

    /**
     * nsITransportEventSink status codes.
     *
     * Although these look like XPCOM error codes and are passed in an nsresult
     * variable, they are *not* error codes.  Note that while they *do* overlap
     * with existing error codes in Necko, these status codes are confined
     * within a very limited context where no error codes may appear, so there
     * is no ambiguity.
     *
     * The values of these status codes must never change.
     *
     * The status codes appear in near-chronological order (not in numeric
     * order).  STATUS_RESOLVING may be skipped if the host does not need to be
     * resolved.  STATUS_WAITING_FOR is an optional status code, which the impl
     * of this interface may choose not to generate.
     */
    const unsigned long STATUS_RESOLVING      = 0x804b0003;
    const unsigned long STATUS_RESOLVED       = 0x804b000b;
    const unsigned long STATUS_CONNECTING_TO  = 0x804b0007;
    const unsigned long STATUS_CONNECTED_TO   = 0x804b0004;
    const unsigned long STATUS_SENDING_TO     = 0x804b0005;
    const unsigned long STATUS_WAITING_FOR    = 0x804b000a;
    const unsigned long STATUS_RECEIVING_FROM = 0x804b0006;

    /**
     * connectionFlags is a bitmask that can be used to modify underlying 
     * behavior of the socket connection. See the flags below.
     */
    attribute unsigned long connectionFlags;

    /**
     * Values for the connectionFlags
     *
     * When making a new connection BYPASS_CACHE will force the Necko DNS 
     * cache entry to be refreshed with a new call to NSPR if it is set before
     * opening the new stream.
     */
    const unsigned long BYPASS_CACHE = (1 << 0);

    /**
     * When setting this flag, the socket will not apply any
     * credentials when establishing a connection. For example,
     * an SSL connection would not send any client-certificates
     * if this flag is set.
     */
    const unsigned long ANONYMOUS_CONNECT = (1 << 1);

    /**
     * If set, we will skip all IPv6 addresses the host may have and only
     * connect to IPv4 ones.
     */
    const unsigned long DISABLE_IPV6 = (1 << 2);

    /**
     * Socket QoS/ToS markings. Valid values are IPTOS_DSCP_AFxx or
     * IPTOS_CLASS_CSx (or IPTOS_DSCP_EF, but currently no supported
     * services require expedited-forwarding).
     * Not setting this value will leave the socket with the default
     * ToS value, which on most systems if IPTOS_CLASS_CS0 (formerly
     * IPTOS_PREC_ROUTINE).
     */
    attribute octet QoSBits;

};

%{C++
/**
 * #define's for compatibility
 */
#define NS_NET_STATUS_RESOLVING_HOST nsISocketTransport::STATUS_RESOLVING
#define NS_NET_STATUS_RESOLVED_HOST  nsISocketTransport::STATUS_RESOLVED
#define NS_NET_STATUS_CONNECTED_TO   nsISocketTransport::STATUS_CONNECTED_TO
#define NS_NET_STATUS_SENDING_TO     nsISocketTransport::STATUS_SENDING_TO
#define NS_NET_STATUS_RECEIVING_FROM nsISocketTransport::STATUS_RECEIVING_FROM
#define NS_NET_STATUS_CONNECTING_TO  nsISocketTransport::STATUS_CONNECTING_TO
#define NS_NET_STATUS_WAITING_FOR    nsISocketTransport::STATUS_WAITING_FOR
%}
