[vlc-devel] [PATCH 2/3] upnp: move UpnpInstanceWrapper to upnp-wrapper

Shaleen Jain shaleen at jain.sh
Wed Jun 27 13:51:38 CEST 2018


On Wed, 2018-06-27 at 16:57 +0530, Shaleen Jain wrote:
> On Wed, 2018-06-27 at 03:50 -0700, Hugo Beauzée-Luyssen wrote:
> > 
> > On Mon, Jun 25, 2018, at 6:49 AM, Shaleen Jain wrote:
> > > Move out UpnpInstanceWrapper into its own file
> > > since it no longer has any dependencies on existing
> > > modules and allow other modules to get references to it.
> > > Move as well as the various helper functions that are
> > > directly required by the UpnpInstanceWrapper class
> > > and inline them for a small performance gain.
> > > 
> > > ---
> > >  modules/services_discovery/Makefile.am      |   4 +-
> > >  modules/services_discovery/upnp-wrapper.cpp | 156 ++++++++
> > >  modules/services_discovery/upnp-wrapper.hpp | 349
> > > ++++++++++++++++++
> > >  modules/services_discovery/upnp.cpp         | 378 --------------
> > > --
> > > ----
> > >  modules/services_discovery/upnp.hpp         |  66 +---
> > >  5 files changed, 509 insertions(+), 444 deletions(-)
> > >  create mode 100644 modules/services_discovery/upnp-wrapper.cpp
> > >  create mode 100644 modules/services_discovery/upnp-wrapper.hpp
> > > 
> > > diff --git a/modules/services_discovery/Makefile.am b/modules/
> > > services_discovery/Makefile.am
> > > index 41c7871a29..f63df23b32 100644
> > > --- a/modules/services_discovery/Makefile.am
> > > +++ b/modules/services_discovery/Makefile.am
> > > @@ -26,7 +26,9 @@ libmtp_plugin_la_LIBADD = $(MTP_LIBS)
> > >  EXTRA_LTLIBRARIES += libmtp_plugin.la
> > >  sd_LTLIBRARIES += $(LTLIBmtp)
> > >  
> > > -libupnp_plugin_la_SOURCES = services_discovery/upnp.cpp 
> > > services_discovery/upnp.hpp
> > > +libupnp_plugin_la_SOURCES = services_discovery/upnp.cpp 
> > > services_discovery/upnp.hpp \
> > > +			    services_discovery/upnp-wrapper.hpp
> > > \
> > > +			    services_discovery/upnp-wrapper.cpp
> > >  libupnp_plugin_la_CXXFLAGS = $(AM_CXXFLAGS) $(UPNP_CFLAGS)
> > >  libupnp_plugin_la_LDFLAGS = $(AM_LDFLAGS) -rpath '$(sddir)'
> > >  libupnp_plugin_la_LIBADD = $(UPNP_LIBS)
> > > diff --git a/modules/services_discovery/upnp-wrapper.cpp
> > > b/modules/
> > > services_discovery/upnp-wrapper.cpp
> > > new file mode 100644
> > > index 0000000000..e1f167a5a7
> > > --- /dev/null
> > > +++ b/modules/services_discovery/upnp-wrapper.cpp
> > > @@ -0,0 +1,156 @@
> > > +/
> > > *****************************************************************
> > > **
> > > **********
> > > + * upnp-wrapper.cpp :  UPnP Instance Wrapper class
> > > + 
> > > *****************************************************************
> > > **
> > > **********
> > > + * Copyright © 2004-2018 VLC authors and VideoLAN
> > > + * $Id$
> > > + *
> > > + * Authors: Rémi Denis-Courmont <rem # videolan.org> (original
> > > plugin)
> > > + *          Christian Henz <henz # c-lab.de>
> > > + *          Mirsal Ennaime <mirsal dot ennaime at gmail dot com>
> > > + *          Hugo Beauzée-Luyssen <hugo at beauzee.fr>
> > > + *          Shaleen Jain <shaleen at jain.sh>
> > > + *
> > > + * This program is free software; you can redistribute it and/or
> > > modify 
> > > it
> > > + * under the terms of the GNU Lesser General Public License as 
> > > published by
> > > + * the Free Software Foundation; either version 2.1 of the
> > > License, or
> > > + * (at your option) any later version.
> > > + *
> > > + * This program is distributed in the hope that it will be
> > > useful,
> > > + * but WITHOUT ANY WARRANTY; without even the implied warranty
> > > of
> > > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> > > + * GNU Lesser General Public License for more details.
> > > + *
> > > + * You should have received a copy of the GNU Lesser General
> > > Public 
> > > License
> > > + * along with this program; if not, write to the Free Software 
> > > Foundation,
> > > + * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301,
> > > USA.
> > > + 
> > > *****************************************************************
> > > **
> > > **********/
> > > +
> > > +#include "upnp-wrapper.hpp"
> > > +
> > > +UpnpInstanceWrapper* UpnpInstanceWrapper::s_instance;
> > > +UpnpInstanceWrapper::Listeners UpnpInstanceWrapper::s_listeners;
> > > +vlc_mutex_t UpnpInstanceWrapper::s_lock = VLC_STATIC_MUTEX;
> > > +
> > > +UpnpInstanceWrapper::UpnpInstanceWrapper()
> > > +    : m_handle( -1 )
> > > +    , m_refcount( 0 )
> > > +{
> > > +}
> > > +
> > > +UpnpInstanceWrapper::~UpnpInstanceWrapper()
> > > +{
> > > +    UpnpUnRegisterClient( m_handle );
> > > +    UpnpFinish();
> > > +}
> > > +
> > > +UpnpInstanceWrapper *UpnpInstanceWrapper::get(vlc_object_t
> > > *p_obj)
> > > +{
> > > +    vlc_mutex_locker lock( &s_lock );
> > > +    if ( s_instance == NULL )
> > > +    {
> > > +        UpnpInstanceWrapper* instance = new(std::nothrow) 
> > > UpnpInstanceWrapper;
> > > +        if ( unlikely( !instance ) )
> > > +        {
> > > +            return NULL;
> > > +        }
> > > +
> > > +    #ifdef UPNP_ENABLE_IPV6
> > > +        char* psz_miface = var_InheritString( p_obj, "miface" );
> > > +        if (psz_miface == NULL)
> > > +            psz_miface = getPreferedAdapter();
> > > +        msg_Info( p_obj, "Initializing libupnp on '%s'
> > > interface", 
> > > psz_miface ? psz_miface : "default" );
> > > +        int i_res = UpnpInit2( psz_miface, 0 );
> > > +        free( psz_miface );
> > > +    #else
> > > +        /* If UpnpInit2 isnt available, initialize on first
> > > IPv4-
> > > capable interface */
> > > +        char *psz_hostip = getIpv4ForMulticast();
> > > +        int i_res = UpnpInit( psz_hostip, 0 );
> > > +        free(psz_hostip);
> > > +    #endif /* UPNP_ENABLE_IPV6 */
> > > +        if( i_res != UPNP_E_SUCCESS )
> > > +        {
> > > +            msg_Err( p_obj, "Initialization failed: %s", 
> > > UpnpGetErrorMessage( i_res ) );
> > > +            delete instance;
> > > +            return NULL;
> > > +        }
> > > +
> > > +        ixmlRelaxParser( 1 );
> > > +
> > > +        /* Register a control point */
> > > +        i_res = UpnpRegisterClient( Callback, instance,
> > > &instance-
> > > > m_handle );
> > > 
> > > +        if( i_res != UPNP_E_SUCCESS )
> > > +        {
> > > +            msg_Err( p_obj, "Client registration failed: %s", 
> > > UpnpGetErrorMessage( i_res ) );
> > > +            delete instance;
> > > +            return NULL;
> > > +        }
> > > +
> > > +        /* libupnp does not treat a maximum content length of 0
> > > as 
> > > unlimited
> > > +         * until 64dedf (~ pupnp v1.6.7) and provides no sane
> > > way
> > > to 
> > > discriminate
> > > +         * between versions */
> > > +        if( (i_res = UpnpSetMaxContentLength( INT_MAX )) != 
> > > UPNP_E_SUCCESS )
> > > +        {
> > > +            msg_Err( p_obj, "Failed to set maximum content
> > > length:
> > > %s",
> > > +                    UpnpGetErrorMessage( i_res ));
> > > +            delete instance;
> > > +            return NULL;
> > > +        }
> > > +        s_instance = instance;
> > > +    }
> > > +    s_instance->m_refcount++;
> > > +    return s_instance;
> > > +}
> > > +
> > > +void UpnpInstanceWrapper::release()
> > > +{
> > > +    UpnpInstanceWrapper *p_delete = NULL;
> > > +    vlc_mutex_lock( &s_lock );
> > > +    if (--s_instance->m_refcount == 0)
> > > +    {
> > > +        p_delete = s_instance;
> > > +        s_instance = NULL;
> > > +    }
> > > +    vlc_mutex_unlock( &s_lock );
> > > +    delete p_delete;
> > > +}
> > > +
> > > +UpnpClient_Handle UpnpInstanceWrapper::handle() const
> > > +{
> > > +    return m_handle;
> > > +}
> > > +
> > > +int UpnpInstanceWrapper::Callback(Upnp_EventType event_type, 
> > > UpnpEventPtr p_event, void *p_user_data)
> > > +{
> > > +    for (Listeners::iterator iter = s_listeners.begin(); iter
> > > != 
> > > s_listeners.end(); ++iter)
> > > +    {
> > > +        (*iter)->onEvent(event_type, p_event, p_user_data);
> > > +    }
> > > +
> > > +    return 0;
> > > +}
> > > +
> > > +void UpnpInstanceWrapper::addListener(ListenerPtr listener)
> > > +{
> > > +    vlc_mutex_lock( &s_lock );
> > > +    if ( std::find( s_listeners.begin(), s_listeners.end(),
> > > listener) !
> > > = s_listeners.end() )
> > > +    {
> > > +        vlc_mutex_unlock( &s_lock );
> > > +        return;
> > > +    }
> > > +    s_listeners.push_back( std::move(listener) );
> > > +    vlc_mutex_unlock( &s_lock );
> > > +}
> > > +
> > > +void UpnpInstanceWrapper::removeListener(ListenerPtr listener)
> > > +{
> > > +    vlc_mutex_lock( &s_lock );
> > > +    Listeners::iterator iter = std::find( s_listeners.begin(), 
> > > s_listeners.end(), listener );
> > > +    if ( iter == s_listeners.end() )
> > > +    {
> > > +        vlc_mutex_unlock( &s_lock );
> > > +        return;
> > > +    }
> > > +
> > > +    s_listeners.erase( iter );
> > > +    vlc_mutex_unlock( &s_lock );
> > > +}
> > > diff --git a/modules/services_discovery/upnp-wrapper.hpp
> > > b/modules/
> > > services_discovery/upnp-wrapper.hpp
> > > new file mode 100644
> > > index 0000000000..e8952a152a
> > > --- /dev/null
> > > +++ b/modules/services_discovery/upnp-wrapper.hpp
> > > @@ -0,0 +1,349 @@
> > > +/
> > > *****************************************************************
> > > **
> > > **********
> > > + * upnp-wrapper.cpp :  UPnP Instance Wrapper class header
> > 
> > Copy paste mistake :)
> 
> Well spotted
> > 
> > > + 
> > > *****************************************************************
> > > **
> > > **********
> > > + * Copyright © 2004-2018 VLC authors and VideoLAN
> > > + * $Id$
> > 
> > Feel free to remove the $Id$ svn relicate
> 
> Okay.
> > 
> > > + *
> > > + * Authors: Rémi Denis-Courmont <rem # videolan.org> (original
> > > plugin)
> > > + *          Christian Henz <henz # c-lab.de>
> > > + *          Mirsal Ennaime <mirsal dot ennaime at gmail dot com>
> > > + *          Hugo Beauzée-Luyssen <hugo at beauzee.fr>
> > > + *          Shaleen Jain <shaleen at jain.sh>
> > > + *
> > > + * This program is free software; you can redistribute it and/or
> > > modify 
> > > it
> > > + * under the terms of the GNU Lesser General Public License as 
> > > published by
> > > + * the Free Software Foundation; either version 2.1 of the
> > > License, or
> > > + * (at your option) any later version.
> > > + *
> > > + * This program is distributed in the hope that it will be
> > > useful,
> > > + * but WITHOUT ANY WARRANTY; without even the implied warranty
> > > of
> > > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> > > + * GNU Lesser General Public License for more details.
> > > + *
> > > + * You should have received a copy of the GNU Lesser General
> > > Public 
> > > License
> > > + * along with this program; if not, write to the Free Software 
> > > Foundation,
> > > + * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301,
> > > USA.
> > > + 
> > > *****************************************************************
> > > **
> > > **********/
> > > +
> > > +#ifdef HAVE_CONFIG_H
> > > +# include "config.h"
> > > +#endif
> > 
> > Although it was previously included from upnp.h, config.h should be
> > included from the source rather than the header.
> > 
> > It's also fine to fix this in a separated commit though, since
> > you're
> > just moving code around in this one
> > 
> 
> Okay.
Actually config.h is required by the various vlc headers like
vlc_common.h and vlc_input.h which are included by both upnp-
wrapper.hpp and upnp.c/hpp. And needs to at the top of the include
hierarchy.
> 
> > > +
> > > +#include <memory>
> > > +#include <vector>
> > > +#include <algorithm>
> > > +#include <assert.h>
> > > +
> > > +#include <upnp/upnp.h>
> > > +#include <upnp/upnptools.h>
> > > +
> > > +#include <vlc_common.h>
> > > +
> > > +#if UPNP_VERSION < 10800
> > > +typedef void* UpnpEventPtr;
> > > +#else
> > > +typedef const void* UpnpEventPtr;
> > > +#endif
> > > +
> > > +/**
> > > + * libUpnp allows only one instance per process, so we create a
> > > wrapper
> > > + * class around it that acts and behaves as a singleton. Letting
> > > us get
> > > + * multiple references to it but only ever having a single
> > > instance in 
> > > memory.
> > > + * At the same time we let any module wishing to get a callback
> > > from 
> > > the library
> > > + * to register a UpnpInstanceWrapper::Listener to get the 
> > > Listener#onEvent()
> > > + * callback without having any hard dependencies.
> > > + */
> > > +class UpnpInstanceWrapper
> > > +{
> > > +public:
> > > +    class Listener
> > > +    {
> > > +        public:
> > > +            virtual ~Listener() {}
> > > +            virtual int onEvent( Upnp_EventType event_type,
> > > +                                 UpnpEventPtr p_event,
> > > +                                 void* p_user_data ) = 0;
> > > +    };
> > > +
> > > +private:
> > > +    static UpnpInstanceWrapper* s_instance;
> > > +    static vlc_mutex_t s_lock;
> > > +    UpnpClient_Handle m_handle;
> > > +    int m_refcount;
> > > +    typedef std::shared_ptr<Listener> ListenerPtr;
> > > +    typedef std::vector<ListenerPtr> Listeners;
> > > +    static Listeners s_listeners;
> > > +
> > > +public:
> > > +    // This increases the refcount before returning the instance
> > > +    static UpnpInstanceWrapper* get( vlc_object_t* p_obj );
> > > +    void release();
> > > +    UpnpClient_Handle handle() const;
> > > +    void addListener(ListenerPtr listener);
> > > +    void removeListener(ListenerPtr listener);
> > > +
> > > +private:
> > > +    static int Callback( Upnp_EventType event_type,
> > > UpnpEventPtr 
> > > p_event, void* p_user_data );
> > > +
> > > +    UpnpInstanceWrapper();
> > > +    ~UpnpInstanceWrapper();
> > > +};
> > > +
> > > +// **************************
> > > +// Helper functions
> > > +// **************************
> > > +
> > > +#if UPNP_VERSION < 10623
> > > +/*
> > > + * Compat functions and typedefs for libupnp prior to 1.8
> > > + */
> > > +
> > > +typedef Upnp_Discovery UpnpDiscovery;
> > > +typedef Upnp_Action_Complete UpnpActionComplete;
> > > +
> > > +inline const char* UpnpDiscovery_get_Location_cstr( const 
> > > UpnpDiscovery* p_discovery )
> > > +{
> > > +  return p_discovery->Location;
> > > +}
> > > +
> > > +inline const char* UpnpDiscovery_get_DeviceID_cstr( const 
> > > UpnpDiscovery* p_discovery )
> > > +{
> > > +  return p_discovery->DeviceId;
> > > +}
> > > +
> > > +inline static IXML_Document*
> > > UpnpActionComplete_get_ActionResult(
> > > const 
> > > UpnpActionComplete* p_result )
> > > +{
> > > +  return p_result->ActionResult;
> > > +}
> > > +#endif
> > > +
> > > +/*
> > > + * Returns the value of a child element, or NULL on error
> > > + */
> > > +inline const char* xml_getChildElementValue( IXML_Element*
> > > p_parent,
> > > +                                      const char*   psz_tag_name
> > > )
> > > +{
> > > +    assert( p_parent );
> > > +    assert( psz_tag_name );
> > > +
> > > +    IXML_NodeList* p_node_list;
> > > +    p_node_list = ixmlElement_getElementsByTagName( p_parent, 
> > > psz_tag_name );
> > > +    if ( !p_node_list ) return NULL;
> > > +
> > > +    IXML_Node* p_element = ixmlNodeList_item( p_node_list, 0 );
> > > +    ixmlNodeList_free( p_node_list );
> > > +    if ( !p_element )   return NULL;
> > > +
> > > +    IXML_Node* p_text_node = ixmlNode_getFirstChild( p_element
> > > );
> > > +    if ( !p_text_node ) return NULL;
> > > +
> > > +    return ixmlNode_getNodeValue( p_text_node );
> > > +}
> > > +
> > > +#ifdef _WIN32
> > > +
> > > +inline IP_ADAPTER_MULTICAST_ADDRESS* 
> > > getMulticastAddress(IP_ADAPTER_ADDRESSES* p_adapter)
> > > +{
> > > +    const unsigned long i_broadcast_ip =
> > > inet_addr("239.255.255.250");
> > > +
> > > +    IP_ADAPTER_MULTICAST_ADDRESS *p_multicast = p_adapter-
> > > > FirstMulticastAddress;
> > > 
> > > +    while (p_multicast != NULL)
> > > +    {
> > > +        if (((struct sockaddr_in *)p_multicast-
> > > > Address.lpSockaddr)-
> > > > sin_addr.S_un.S_addr == i_broadcast_ip)
> > > 
> > > +            return p_multicast;
> > > +        p_multicast = p_multicast->Next;
> > > +    }
> > > +    return NULL;
> > > +}
> > > +
> > > +inline bool isAdapterSuitable(IP_ADAPTER_ADDRESSES* p_adapter,
> > > bool 
> > > ipv6)
> > > +{
> > > +    if ( p_adapter->OperStatus != IfOperStatusUp )
> > > +        return false;
> > > +    if (p_adapter->Length == sizeof(IP_ADAPTER_ADDRESSES_XP))
> > > +    {
> > > +        IP_ADAPTER_ADDRESSES_XP* p_adapter_xp = 
> > > reinterpret_cast<IP_ADAPTER_ADDRESSES_XP*>( p_adapter );
> > > +        // On Windows Server 2003 and Windows XP, this member is
> > > zero 
> > > if IPv4 is not available on the interface.
> > > +        if (ipv6)
> > > +            return p_adapter_xp->Ipv6IfIndex != 0;
> > > +        return p_adapter_xp->IfIndex != 0;
> > > +    }
> > > +    IP_ADAPTER_ADDRESSES_LH* p_adapter_lh = 
> > > reinterpret_cast<IP_ADAPTER_ADDRESSES_LH*>( p_adapter );
> > > +    if (p_adapter_lh->FirstGatewayAddress == NULL)
> > > +        return false;
> > > +    if (ipv6)
> > > +        return p_adapter_lh->Ipv6Enabled;
> > > +    return p_adapter_lh->Ipv4Enabled;
> > > +}
> > > +
> > > +inline IP_ADAPTER_ADDRESSES* ListAdapters()
> > > +{
> > > +    ULONG addrSize;
> > > +    const ULONG queryFlags = GAA_FLAG_INCLUDE_GATEWAYS|
> > > GAA_FLAG_SKIP_ANYCAST|GAA_FLAG_SKIP_DNS_SERVER;
> > > +    IP_ADAPTER_ADDRESSES* addresses = NULL;
> > > +    HRESULT hr;
> > > +
> > > +    /**
> > > +     * https://msdn.microsoft.com/en-us/library/aa365915.aspx
> > > +     *
> > > +     * The recommended method of calling the
> > > GetAdaptersAddresses 
> > > function is to pre-allocate a
> > > +     * 15KB working buffer pointed to by the AdapterAddresses 
> > > parameter. On typical computers,
> > > +     * this dramatically reduces the chances that the 
> > > GetAdaptersAddresses function returns
> > > +     * ERROR_BUFFER_OVERFLOW, which would require calling 
> > > GetAdaptersAddresses function multiple
> > > +     * times. The example code illustrates this method of use.
> > > +     */
> > > +    addrSize = 15 * 1024;
> > > +    do
> > > +    {
> > > +        free(addresses);
> > > +        addresses = (IP_ADAPTER_ADDRESSES*)malloc( addrSize );
> > > +        if (addresses == NULL)
> > > +            return NULL;
> > > +        hr = GetAdaptersAddresses(AF_UNSPEC, queryFlags, NULL, 
> > > addresses, &addrSize);
> > > +    } while (hr == ERROR_BUFFER_OVERFLOW);
> > > +    if (hr != NO_ERROR) {
> > > +        free(addresses);
> > > +        return NULL;
> > > +    }
> > > +    return addresses;
> > > +}
> > > +
> > > +#ifdef UPNP_ENABLE_IPV6
> > > +
> > > +inline char* getPreferedAdapter()
> > > +{
> > > +    IP_ADAPTER_ADDRESSES *p_adapter, *addresses;
> > > +
> > > +    addresses = ListAdapters();
> > > +    if (addresses == NULL)
> > > +        return NULL;
> > > +
> > > +    /* find one with multicast capabilities */
> > > +    p_adapter = addresses;
> > > +    while (p_adapter != NULL)
> > > +    {
> > > +        if (isAdapterSuitable( p_adapter, true ))
> > > +        {
> > > +            /* make sure it supports 239.255.255.250 */
> > > +            IP_ADAPTER_MULTICAST_ADDRESS *p_multicast = 
> > > getMulticastAddress( p_adapter );
> > > +            if (p_multicast != NULL)
> > > +            {
> > > +                char* res = FromWide( p_adapter->FriendlyName );
> > > +                free( addresses );
> > > +                return res;
> > > +            }
> > > +        }
> > > +        p_adapter = p_adapter->Next;
> > > +    }
> > > +    free(addresses);
> > > +    return NULL;
> > > +}
> > > +
> > > +#else
> > > +
> > > +inline char *getIpv4ForMulticast()
> > > +{
> > > +    IP_ADAPTER_UNICAST_ADDRESS *p_best_ip = NULL;
> > > +    wchar_t psz_uri[32];
> > > +    DWORD strSize;
> > > +    IP_ADAPTER_ADDRESSES *p_adapter, *addresses;
> > > +
> > > +    addresses = ListAdapters();
> > > +    if (addresses == NULL)
> > > +        return NULL;
> > > +
> > > +    /* find one with multicast capabilities */
> > > +    p_adapter = addresses;
> > > +    while (p_adapter != NULL)
> > > +    {
> > > +        if (isAdapterSuitable( p_adapter, false ))
> > > +        {
> > > +            /* make sure it supports 239.255.255.250 */
> > > +            IP_ADAPTER_MULTICAST_ADDRESS *p_multicast = 
> > > getMulticastAddress( p_adapter );
> > > +            if (p_multicast != NULL)
> > > +            {
> > > +                /* get an IPv4 address */
> > > +                IP_ADAPTER_UNICAST_ADDRESS *p_unicast =
> > > p_adapter-
> > > > FirstUnicastAddress;
> > > 
> > > +                while (p_unicast != NULL)
> > > +                {
> > > +                    strSize = sizeof( psz_uri ) / sizeof(
> > > wchar_t
> > > );
> > > +                    if( WSAAddressToString( p_unicast-
> > > > Address.lpSockaddr,
> > > 
> > > +                                            p_unicast-
> > > > Address.iSockaddrLength,
> > > 
> > > +                                            NULL, psz_uri,
> > > &strSize ) 
> > > == 0 )
> > > +                    {
> > > +                        if ( p_best_ip == NULL ||
> > > +                             p_best_ip->ValidLifetime >
> > > p_unicast-
> > > > ValidLifetime )
> > > 
> > > +                        {
> > > +                            p_best_ip = p_unicast;
> > > +                        }
> > > +                    }
> > > +                    p_unicast = p_unicast->Next;
> > > +                }
> > > +            }
> > > +        }
> > > +        p_adapter = p_adapter->Next;
> > > +    }
> > > +
> > > +    if ( p_best_ip != NULL )
> > > +        goto done;
> > > +
> > > +    /* find any with IPv4 */
> > > +    p_adapter = addresses;
> > > +    while (p_adapter != NULL)
> > > +    {
> > > +        if (isAdapterSuitable(p_adapter, false))
> > > +        {
> > > +            /* get an IPv4 address */
> > > +            IP_ADAPTER_UNICAST_ADDRESS *p_unicast = p_adapter-
> > > > FirstUnicastAddress;
> > > 
> > > +            while (p_unicast != NULL)
> > > +            {
> > > +                strSize = sizeof( psz_uri ) / sizeof( wchar_t );
> > > +                if( WSAAddressToString( p_unicast-
> > > > Address.lpSockaddr,
> > > 
> > > +                                        p_unicast-
> > > > Address.iSockaddrLength,
> > > 
> > > +                                        NULL, psz_uri, &strSize
> > > )
> > > == 
> > > 0 )
> > > +                {
> > > +                    if ( p_best_ip == NULL ||
> > > +                         p_best_ip->ValidLifetime > p_unicast-
> > > > ValidLifetime )
> > > 
> > > +                    {
> > > +                        p_best_ip = p_unicast;
> > > +                    }
> > > +                }
> > > +                p_unicast = p_unicast->Next;
> > > +            }
> > > +        }
> > > +        p_adapter = p_adapter->Next;
> > > +    }
> > > +
> > > +done:
> > > +    if (p_best_ip != NULL)
> > > +    {
> > > +        strSize = sizeof( psz_uri ) / sizeof( wchar_t );
> > > +        WSAAddressToString( p_best_ip->Address.lpSockaddr,
> > > +                            p_best_ip->Address.iSockaddrLength,
> > > +                            NULL, psz_uri, &strSize );
> > > +        free(addresses);
> > > +        return FromWide( psz_uri );
> > > +    }
> > > +    free(addresses);
> > > +    return NULL;
> > > +}
> > > +#endif /* UPNP_ENABLE_IPV6 */
> > > +#else /* _WIN32 */
> > > +
> > > +#ifdef UPNP_ENABLE_IPV6
> > > +
> > > +inline char *getPreferedAdapter()
> > > +{
> > > +    return NULL;
> > > +}
> > > +
> > > +#else
> > > +
> > > +inline char *getIpv4ForMulticast()
> > > +{
> > > +    return NULL;
> > > +}
> > > +
> > > +#endif
> > > +
> > > +#endif /* _WIN32 */
> > > diff --git a/modules/services_discovery/upnp.cpp b/modules/
> > > services_discovery/upnp.cpp
> > > index fc81a847a2..26d9206b5f 100644
> > > --- a/modules/services_discovery/upnp.cpp
> > > +++ b/modules/services_discovery/upnp.cpp
> > > @@ -39,30 +39,6 @@
> > >  #include <set>
> > >  #include <string>
> > >  
> > > -#if UPNP_VERSION < 10623
> > > -/*
> > > - * Compat functions and typedefs for libupnp prior to 1.8
> > > - */
> > > -
> > > -typedef Upnp_Discovery UpnpDiscovery;
> > > -typedef Upnp_Action_Complete UpnpActionComplete;
> > > -
> > > -static const char* UpnpDiscovery_get_Location_cstr( const 
> > > UpnpDiscovery* p_discovery )
> > > -{
> > > -  return p_discovery->Location;
> > > -}
> > > -
> > > -static const char* UpnpDiscovery_get_DeviceID_cstr( const 
> > > UpnpDiscovery* p_discovery )
> > > -{
> > > -  return p_discovery->DeviceId;
> > > -}
> > > -
> > > -static IXML_Document* UpnpActionComplete_get_ActionResult(
> > > const 
> > > UpnpActionComplete* p_result )
> > > -{
> > > -  return p_result->ActionResult;
> > > -}
> > > -#endif
> > > -
> > >  /*
> > >   * Constants
> > >  */
> > > @@ -94,10 +70,6 @@ struct access_sys_t
> > >      UpnpInstanceWrapper* p_upnp;
> > >  };
> > >  
> > > -UpnpInstanceWrapper* UpnpInstanceWrapper::s_instance;
> > > -UpnpInstanceWrapper::Listeners UpnpInstanceWrapper::s_listeners;
> > > -vlc_mutex_t UpnpInstanceWrapper::s_lock = VLC_STATIC_MUTEX;
> > > -
> > >  /*
> > >   * VLC callback prototypes
> > >   */
> > > @@ -141,30 +113,6 @@ vlc_module_begin()
> > >      VLC_SD_PROBE_SUBMODULE
> > >  vlc_module_end()
> > >  
> > > -
> > > -/*
> > > - * Returns the value of a child element, or NULL on error
> > > - */
> > > -const char* xml_getChildElementValue( IXML_Element* p_parent,
> > > -                                      const char*   psz_tag_name
> > > )
> > > -{
> > > -    assert( p_parent );
> > > -    assert( psz_tag_name );
> > > -
> > > -    IXML_NodeList* p_node_list;
> > > -    p_node_list = ixmlElement_getElementsByTagName( p_parent,
> > > psz_tag_name );
> > > -    if ( !p_node_list ) return NULL;
> > > -
> > > -    IXML_Node* p_element = ixmlNodeList_item( p_node_list, 0 );
> > > -    ixmlNodeList_free( p_node_list );
> > > -    if ( !p_element )   return NULL;
> > > -
> > > -    IXML_Node* p_text_node = ixmlNode_getFirstChild( p_element
> > > );
> > > -    if ( !p_text_node ) return NULL;
> > > -
> > > -    return ixmlNode_getNodeValue( p_text_node );
> > > -}
> > > -
> > >  /*
> > >   * Extracts the result document from a SOAP response
> > >   */
> > > @@ -1309,329 +1257,3 @@ static void Close( vlc_object_t* p_this )
> > >  }
> > >  
> > >  }
> > > -
> > > -UpnpInstanceWrapper::UpnpInstanceWrapper()
> > > -    : m_handle( -1 )
> > > -    , m_refcount( 0 )
> > > -{
> > > -}
> > > -
> > > -UpnpInstanceWrapper::~UpnpInstanceWrapper()
> > > -{
> > > -    UpnpUnRegisterClient( m_handle );
> > > -    UpnpFinish();
> > > -}
> > > -
> > > -#ifdef _WIN32
> > > -
> > > -static IP_ADAPTER_MULTICAST_ADDRESS* 
> > > getMulticastAddress(IP_ADAPTER_ADDRESSES* p_adapter)
> > > -{
> > > -    const unsigned long i_broadcast_ip =
> > > inet_addr("239.255.255.250");
> > > -
> > > -    IP_ADAPTER_MULTICAST_ADDRESS *p_multicast = p_adapter-
> > > > FirstMulticastAddress;
> > > 
> > > -    while (p_multicast != NULL)
> > > -    {
> > > -        if (((struct sockaddr_in *)p_multicast-
> > > > Address.lpSockaddr)-
> > > > sin_addr.S_un.S_addr == i_broadcast_ip)
> > > 
> > > -            return p_multicast;
> > > -        p_multicast = p_multicast->Next;
> > > -    }
> > > -    return NULL;
> > > -}
> > > -
> > > -static bool isAdapterSuitable(IP_ADAPTER_ADDRESSES* p_adapter,
> > > bool 
> > > ipv6)
> > > -{
> > > -    if ( p_adapter->OperStatus != IfOperStatusUp )
> > > -        return false;
> > > -    if (p_adapter->Length == sizeof(IP_ADAPTER_ADDRESSES_XP))
> > > -    {
> > > -        IP_ADAPTER_ADDRESSES_XP* p_adapter_xp = 
> > > reinterpret_cast<IP_ADAPTER_ADDRESSES_XP*>( p_adapter );
> > > -        // On Windows Server 2003 and Windows XP, this member is
> > > zero 
> > > if IPv4 is not available on the interface.
> > > -        if (ipv6)
> > > -            return p_adapter_xp->Ipv6IfIndex != 0;
> > > -        return p_adapter_xp->IfIndex != 0;
> > > -    }
> > > -    IP_ADAPTER_ADDRESSES_LH* p_adapter_lh = 
> > > reinterpret_cast<IP_ADAPTER_ADDRESSES_LH*>( p_adapter );
> > > -    if (p_adapter_lh->FirstGatewayAddress == NULL)
> > > -        return false;
> > > -    if (ipv6)
> > > -        return p_adapter_lh->Ipv6Enabled;
> > > -    return p_adapter_lh->Ipv4Enabled;
> > > -}
> > > -
> > > -static IP_ADAPTER_ADDRESSES* ListAdapters()
> > > -{
> > > -    ULONG addrSize;
> > > -    const ULONG queryFlags = GAA_FLAG_INCLUDE_GATEWAYS|
> > > GAA_FLAG_SKIP_ANYCAST|GAA_FLAG_SKIP_DNS_SERVER;
> > > -    IP_ADAPTER_ADDRESSES* addresses = NULL;
> > > -    HRESULT hr;
> > > -
> > > -    /**
> > > -     * https://msdn.microsoft.com/en-us/library/aa365915.aspx
> > > -     *
> > > -     * The recommended method of calling the
> > > GetAdaptersAddresses 
> > > function is to pre-allocate a
> > > -     * 15KB working buffer pointed to by the AdapterAddresses 
> > > parameter. On typical computers,
> > > -     * this dramatically reduces the chances that the 
> > > GetAdaptersAddresses function returns
> > > -     * ERROR_BUFFER_OVERFLOW, which would require calling 
> > > GetAdaptersAddresses function multiple
> > > -     * times. The example code illustrates this method of use.
> > > -     */
> > > -    addrSize = 15 * 1024;
> > > -    do
> > > -    {
> > > -        free(addresses);
> > > -        addresses = (IP_ADAPTER_ADDRESSES*)malloc( addrSize );
> > > -        if (addresses == NULL)
> > > -            return NULL;
> > > -        hr = GetAdaptersAddresses(AF_UNSPEC, queryFlags, NULL, 
> > > addresses, &addrSize);
> > > -    } while (hr == ERROR_BUFFER_OVERFLOW);
> > > -    if (hr != NO_ERROR) {
> > > -        free(addresses);
> > > -        return NULL;
> > > -    }
> > > -    return addresses;
> > > -}
> > > -
> > > -#ifdef UPNP_ENABLE_IPV6
> > > -
> > > -static char* getPreferedAdapter()
> > > -{
> > > -    IP_ADAPTER_ADDRESSES *p_adapter, *addresses;
> > > -
> > > -    addresses = ListAdapters();
> > > -    if (addresses == NULL)
> > > -        return NULL;
> > > -
> > > -    /* find one with multicast capabilities */
> > > -    p_adapter = addresses;
> > > -    while (p_adapter != NULL)
> > > -    {
> > > -        if (isAdapterSuitable( p_adapter, true ))
> > > -        {
> > > -            /* make sure it supports 239.255.255.250 */
> > > -            IP_ADAPTER_MULTICAST_ADDRESS *p_multicast = 
> > > getMulticastAddress( p_adapter );
> > > -            if (p_multicast != NULL)
> > > -            {
> > > -                char* res = FromWide( p_adapter->FriendlyName );
> > > -                free( addresses );
> > > -                return res;
> > > -            }
> > > -        }
> > > -        p_adapter = p_adapter->Next;
> > > -    }
> > > -    free(addresses);
> > > -    return NULL;
> > > -}
> > > -
> > > -#else
> > > -
> > > -static char *getIpv4ForMulticast()
> > > -{
> > > -    IP_ADAPTER_UNICAST_ADDRESS *p_best_ip = NULL;
> > > -    wchar_t psz_uri[32];
> > > -    DWORD strSize;
> > > -    IP_ADAPTER_ADDRESSES *p_adapter, *addresses;
> > > -
> > > -    addresses = ListAdapters();
> > > -    if (addresses == NULL)
> > > -        return NULL;
> > > -
> > > -    /* find one with multicast capabilities */
> > > -    p_adapter = addresses;
> > > -    while (p_adapter != NULL)
> > > -    {
> > > -        if (isAdapterSuitable( p_adapter, false ))
> > > -        {
> > > -            /* make sure it supports 239.255.255.250 */
> > > -            IP_ADAPTER_MULTICAST_ADDRESS *p_multicast = 
> > > getMulticastAddress( p_adapter );
> > > -            if (p_multicast != NULL)
> > > -            {
> > > -                /* get an IPv4 address */
> > > -                IP_ADAPTER_UNICAST_ADDRESS *p_unicast =
> > > p_adapter-
> > > > FirstUnicastAddress;
> > > 
> > > -                while (p_unicast != NULL)
> > > -                {
> > > -                    strSize = sizeof( psz_uri ) / sizeof(
> > > wchar_t
> > > );
> > > -                    if( WSAAddressToString( p_unicast-
> > > > Address.lpSockaddr,
> > > 
> > > -                                            p_unicast-
> > > > Address.iSockaddrLength,
> > > 
> > > -                                            NULL, psz_uri,
> > > &strSize ) 
> > > == 0 )
> > > -                    {
> > > -                        if ( p_best_ip == NULL ||
> > > -                             p_best_ip->ValidLifetime >
> > > p_unicast-
> > > > ValidLifetime )
> > > 
> > > -                        {
> > > -                            p_best_ip = p_unicast;
> > > -                        }
> > > -                    }
> > > -                    p_unicast = p_unicast->Next;
> > > -                }
> > > -            }
> > > -        }
> > > -        p_adapter = p_adapter->Next;
> > > -    }
> > > -
> > > -    if ( p_best_ip != NULL )
> > > -        goto done;
> > > -
> > > -    /* find any with IPv4 */
> > > -    p_adapter = addresses;
> > > -    while (p_adapter != NULL)
> > > -    {
> > > -        if (isAdapterSuitable(p_adapter, false))
> > > -        {
> > > -            /* get an IPv4 address */
> > > -            IP_ADAPTER_UNICAST_ADDRESS *p_unicast = p_adapter-
> > > > FirstUnicastAddress;
> > > 
> > > -            while (p_unicast != NULL)
> > > -            {
> > > -                strSize = sizeof( psz_uri ) / sizeof( wchar_t );
> > > -                if( WSAAddressToString( p_unicast-
> > > > Address.lpSockaddr,
> > > 
> > > -                                        p_unicast-
> > > > Address.iSockaddrLength,
> > > 
> > > -                                        NULL, psz_uri, &strSize
> > > )
> > > == 
> > > 0 )
> > > -                {
> > > -                    if ( p_best_ip == NULL ||
> > > -                         p_best_ip->ValidLifetime > p_unicast-
> > > > ValidLifetime )
> > > 
> > > -                    {
> > > -                        p_best_ip = p_unicast;
> > > -                    }
> > > -                }
> > > -                p_unicast = p_unicast->Next;
> > > -            }
> > > -        }
> > > -        p_adapter = p_adapter->Next;
> > > -    }
> > > -
> > > -done:
> > > -    if (p_best_ip != NULL)
> > > -    {
> > > -        strSize = sizeof( psz_uri ) / sizeof( wchar_t );
> > > -        WSAAddressToString( p_best_ip->Address.lpSockaddr,
> > > -                            p_best_ip->Address.iSockaddrLength,
> > > -                            NULL, psz_uri, &strSize );
> > > -        free(addresses);
> > > -        return FromWide( psz_uri );
> > > -    }
> > > -    free(addresses);
> > > -    return NULL;
> > > -}
> > > -#endif /* UPNP_ENABLE_IPV6 */
> > > -#else /* _WIN32 */
> > > -
> > > -#ifdef UPNP_ENABLE_IPV6
> > > -
> > > -static char *getPreferedAdapter()
> > > -{
> > > -    return NULL;
> > > -}
> > > -
> > > -#else
> > > -
> > > -static char *getIpv4ForMulticast()
> > > -{
> > > -    return NULL;
> > > -}
> > > -
> > > -#endif
> > > -
> > > -#endif /* _WIN32 */
> > > -
> > > -UpnpInstanceWrapper *UpnpInstanceWrapper::get(vlc_object_t
> > > *p_obj)
> > > -{
> > > -    vlc_mutex_locker lock( &s_lock );
> > > -    if ( s_instance == NULL )
> > > -    {
> > > -        UpnpInstanceWrapper* instance = new(std::nothrow) 
> > > UpnpInstanceWrapper;
> > > -        if ( unlikely( !instance ) )
> > > -        {
> > > -            return NULL;
> > > -        }
> > > -
> > > -    #ifdef UPNP_ENABLE_IPV6
> > > -        char* psz_miface = var_InheritString( p_obj, "miface" );
> > > -        if (psz_miface == NULL)
> > > -            psz_miface = getPreferedAdapter();
> > > -        msg_Info( p_obj, "Initializing libupnp on '%s'
> > > interface", 
> > > psz_miface ? psz_miface : "default" );
> > > -        int i_res = UpnpInit2( psz_miface, 0 );
> > > -        free( psz_miface );
> > > -    #else
> > > -        /* If UpnpInit2 isnt available, initialize on first
> > > IPv4-
> > > capable interface */
> > > -        char *psz_hostip = getIpv4ForMulticast();
> > > -        int i_res = UpnpInit( psz_hostip, 0 );
> > > -        free(psz_hostip);
> > > -    #endif /* UPNP_ENABLE_IPV6 */
> > > -        if( i_res != UPNP_E_SUCCESS )
> > > -        {
> > > -            msg_Err( p_obj, "Initialization failed: %s", 
> > > UpnpGetErrorMessage( i_res ) );
> > > -            delete instance;
> > > -            return NULL;
> > > -        }
> > > -
> > > -        ixmlRelaxParser( 1 );
> > > -
> > > -        /* Register a control point */
> > > -        i_res = UpnpRegisterClient( Callback, instance,
> > > &instance-
> > > > m_handle );
> > > 
> > > -        if( i_res != UPNP_E_SUCCESS )
> > > -        {
> > > -            msg_Err( p_obj, "Client registration failed: %s", 
> > > UpnpGetErrorMessage( i_res ) );
> > > -            delete instance;
> > > -            return NULL;
> > > -        }
> > > -
> > > -        /* libupnp does not treat a maximum content length of 0
> > > as 
> > > unlimited
> > > -         * until 64dedf (~ pupnp v1.6.7) and provides no sane
> > > way
> > > to 
> > > discriminate
> > > -         * between versions */
> > > -        if( (i_res = UpnpSetMaxContentLength( INT_MAX )) != 
> > > UPNP_E_SUCCESS )
> > > -        {
> > > -            msg_Err( p_obj, "Failed to set maximum content
> > > length:
> > > %s",
> > > -                    UpnpGetErrorMessage( i_res ));
> > > -            delete instance;
> > > -            return NULL;
> > > -        }
> > > -        s_instance = instance;
> > > -    }
> > > -    s_instance->m_refcount++;
> > > -    return s_instance;
> > > -}
> > > -
> > > -void UpnpInstanceWrapper::release()
> > > -{
> > > -    UpnpInstanceWrapper *p_delete = NULL;
> > > -    vlc_mutex_lock( &s_lock );
> > > -    if (--s_instance->m_refcount == 0)
> > > -    {
> > > -        p_delete = s_instance;
> > > -        s_instance = NULL;
> > > -    }
> > > -    vlc_mutex_unlock( &s_lock );
> > > -    delete p_delete;
> > > -}
> > > -
> > > -UpnpClient_Handle UpnpInstanceWrapper::handle() const
> > > -{
> > > -    return m_handle;
> > > -}
> > > -
> > > -int UpnpInstanceWrapper::Callback(Upnp_EventType event_type, 
> > > UpnpEventPtr p_event, void *p_user_data)
> > > -{
> > > -    for (Listeners::iterator iter = s_listeners.begin(); iter
> > > != 
> > > s_listeners.end(); ++iter)
> > > -    {
> > > -        (*iter)->onEvent(event_type, p_event, p_user_data);
> > > -    }
> > > -
> > > -    return 0;
> > > -}
> > > -
> > > -void UpnpInstanceWrapper::addListener(ListenerPtr listener)
> > > -{
> > > -    vlc_mutex_lock( &s_lock );
> > > -    if ( std::find( s_listeners.begin(), s_listeners.end(),
> > > listener) !
> > > = s_listeners.end() )
> > > -        return;
> > > -    s_listeners.push_back( std::move(listener) );
> > > -    vlc_mutex_unlock( &s_lock );
> > > -}
> > > -
> > > -void UpnpInstanceWrapper::removeListener(ListenerPtr listener)
> > > -{
> > > -    vlc_mutex_lock( &s_lock );
> > > -    Listeners::iterator iter = std::find( s_listeners.begin(), 
> > > s_listeners.end(), listener );
> > > -    if ( iter == s_listeners.end() )
> > > -        return;
> > > -
> > > -    s_listeners.erase( iter );
> > > -    vlc_mutex_unlock( &s_lock );
> > > -}
> > > diff --git a/modules/services_discovery/upnp.hpp b/modules/
> > > services_discovery/upnp.hpp
> > > index 8c13265fc8..164b1cbc69 100644
> > > --- a/modules/services_discovery/upnp.hpp
> > > +++ b/modules/services_discovery/upnp.hpp
> > > @@ -24,82 +24,18 @@
> > >   * along with this program; if not, write to the Free Software 
> > > Foundation,
> > >   * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301,
> > > USA.
> > >   
> > > *****************************************************************
> > > **
> > > **********/
> > > -
> > > -#ifdef HAVE_CONFIG_H
> > > -# include "config.h"
> > > -#endif
> > > +#include "upnp-wrapper.hpp"
> > >  
> > >  #include <vector>
> > >  #include <string>
> > > -#include <memory>
> > >  
> > >  #ifdef _WIN32
> > >  #include <windows.h>
> > >  #include <wincrypt.h>
> > >  #endif
> > > -#include <upnp/upnp.h>
> > > -#include <upnp/upnptools.h>
> > >  
> > > -#include <vlc_common.h>
> > >  #include <vlc_url.h>
> > >  
> > > -#if UPNP_VERSION < 10800
> > > -typedef void* UpnpEventPtr;
> > > -#else
> > > -typedef const void* UpnpEventPtr;
> > > -#endif
> > > -
> > > -namespace SD
> > > -{
> > > -    class MediaServerList;
> > > -}
> > > -
> > > -/*
> > > - * libUpnp allows only one instance per process, so we have to
> > > share 
> > > one for
> > > - * both SD & Access module
> > > - * Since the callback is bound to the UpnpClient_Handle, we have
> > > to 
> > > register
> > > - * a wrapper callback, in order for the access module to be able
> > > to 
> > > initialize
> > > - * libUpnp first.
> > > - * When a SD wishes to use libUpnp, it will provide its own
> > > callback, 
> > > that the
> > > - * wrapper will forward.
> > > - * This way, we always have a register callback & a client
> > > handle.
> > > - */
> > > -class UpnpInstanceWrapper
> > > -{
> > > -public:
> > > -    class Listener
> > > -    {
> > > -        public:
> > > -        virtual ~Listener() {}
> > > -        virtual int onEvent( Upnp_EventType event_type,
> > > -                             UpnpEventPtr p_event,
> > > -                             void* p_user_data ) = 0;
> > > -    };
> > > -
> > > -private:
> > > -    static UpnpInstanceWrapper* s_instance;
> > > -    static vlc_mutex_t s_lock;
> > > -    UpnpClient_Handle m_handle;
> > > -    int m_refcount;
> > > -    typedef std::shared_ptr<Listener> ListenerPtr;
> > > -    typedef std::vector<ListenerPtr> Listeners;
> > > -    static Listeners s_listeners;
> > > -
> > > -public:
> > > -    // This increases the refcount before returning the instance
> > > -    static UpnpInstanceWrapper* get( vlc_object_t* p_obj );
> > > -    void release();
> > > -    UpnpClient_Handle handle() const;
> > > -    void addListener(ListenerPtr listener);
> > > -    void removeListener(ListenerPtr listener);
> > > -
> > > -private:
> > > -    static int Callback( Upnp_EventType event_type,
> > > UpnpEventPtr 
> > > p_event, void* p_user_data );
> > > -
> > > -    UpnpInstanceWrapper();
> > > -    ~UpnpInstanceWrapper();
> > > -};
> > > -
> > >  namespace SD
> > >  {
> > >  
> > > -- 
> > > 2.18.0
> > > _______________________________________________
> > > vlc-devel mailing list
> > > To unsubscribe or modify your subscription options:
> > > https://mailman.videolan.org/listinfo/vlc-devel
> > 
> > Nitpick aside, LGTM
> > 
-- 
Regards,
Shaleen Jain



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