/*
====================
NET_OpenIP
====================
*/
void NET_OpenIP( void ) {
int i;
int err;
int port;
int port6;
port = net_port->integer;
port6 = net_port6->integer;
NET_GetLocalAddress();
// automatically scan for a valid port, so multiple
// dedicated servers can be started without requiring
// a different net_port for each one
if(net_enabled->integer & NET_ENABLEV6)
{
for( i = 0 ; i < 10 ; i++ )
{
ip6_socket = NET_IP6Socket(net_ip6->string, port6 + i, &boundto, &err);
if (ip6_socket != INVALID_SOCKET)
{
Cvar_SetValue( "net_port6", port6 + i );
break;
}
else
{
if(err == EAFNOSUPPORT)
break;
}
}
if(ip6_socket == INVALID_SOCKET)
Com_Printf( "WARNING: Couldn't bind to a v6 ip address.\n");
}
if(net_enabled->integer & NET_ENABLEV4)
{
for( i = 0 ; i < 10 ; i++ ) {
ip_socket = NET_IPSocket( net_ip->string, port + i, &err );
if (ip_socket != INVALID_SOCKET) {
Cvar_SetValue( "net_port", port + i );
if (net_socksEnabled->integer)
NET_OpenSocks( port + i );
break;
}
else
{
if(err == EAFNOSUPPORT)
break;
}
}
if(ip_socket == INVALID_SOCKET)
Com_Printf( "WARNING: Couldn't bind to a v4 ip address.\n");
}
}
/*
====================
NET_JoinMulticast
Join an ipv6 multicast group
====================
*/
void NET_JoinMulticast6( void )
{
int err;
if ( ip6_socket == INVALID_SOCKET || multicast6_socket != INVALID_SOCKET || ( net_enabled->integer & NET_DISABLEMCAST ) )
{
return;
}
if ( IN6_IS_ADDR_MULTICAST( &boundto.sin6_addr ) || IN6_IS_ADDR_UNSPECIFIED( &boundto.sin6_addr ) )
{
// The way the socket was bound does not prohibit receiving multi-cast packets. So we don't need to open a new one.
multicast6_socket = ip6_socket;
}
else
{
if ( ( multicast6_socket = NET_IP6Socket( net_mcast6addr->string, ntohs( boundto.sin6_port ), NULL, &err ) ) == INVALID_SOCKET )
{
// If the OS does not support binding to multicast addresses, like Windows XP, at least try with a non-multicast socket.
multicast6_socket = ip6_socket;
}
}
if ( curgroup.ipv6mr_interface )
{
if ( setsockopt( multicast6_socket, IPPROTO_IPV6, IPV6_MULTICAST_IF,
( char * ) &curgroup.ipv6mr_interface, sizeof( curgroup.ipv6mr_interface ) ) < 0 )
{
Com_Printf(_( "NET_JoinMulticast6: Couldn't set scope on multicast socket: %s\n"), NET_ErrorString() );
if ( multicast6_socket != ip6_socket )
{
closesocket( multicast6_socket );
multicast6_socket = INVALID_SOCKET;
return;
}
}
}
if ( setsockopt( multicast6_socket, IPPROTO_IPV6, IPV6_JOIN_GROUP, ( char * ) &curgroup, sizeof( curgroup ) ) )
{
Com_Printf(_( "NET_JoinMulticast6: Couldn't join multicast group: %s\n"), NET_ErrorString() );
if ( multicast6_socket != ip6_socket )
{
closesocket( multicast6_socket );
multicast6_socket = INVALID_SOCKET;
return;
}
}
}
/*
====================
NET_OpenIP
====================
*/
static void NET_OpenIP( void )
{
int i;
int err;
int port = PORT_ANY;
int port6 = PORT_ANY;
struct sockaddr_in boundto4;
if ( serverMode )
{
port = NET_EnsureValidPortNo( net_port->integer );
port6 = NET_EnsureValidPortNo( net_port6->integer );
}
NET_GetLocalAddress();
// automatically scan for a valid port, so multiple
// dedicated servers can be started without requiring
// a different net_port for each one
if ( net_enabled->integer & NET_ENABLEV6 )
{
for ( i = ( port6 == PORT_ANY ? 1 : MAX_TRY_PORTS ); i; i++ )
{
ip6_socket = NET_IP6Socket( net_ip6->string, port6, &boundto, &err );
if ( ip6_socket != INVALID_SOCKET )
{
port6 = ntohs( boundto.sin6_port );
break;
}
else if ( err == EAFNOSUPPORT )
{
port6 = PORT_ANY;
break;
}
port6 = ( port6 == PORT_ANY ) ? port6 : NET_EnsureValidPortNo( port6 + 1 );
}
if ( ip6_socket == INVALID_SOCKET || err == EAFNOSUPPORT )
{
Com_Printf( "WARNING: Couldn't bind to an IPv6 address.\n" );
port6 = PORT_ANY;
}
}
if ( net_enabled->integer & NET_ENABLEV4 )
{
for ( i = ( port6 == PORT_ANY ? 1 : MAX_TRY_PORTS ); i; i++ )
{
ip_socket = NET_IPSocket( net_ip->string, port, &boundto4, &err );
if ( ip_socket != INVALID_SOCKET )
{
port = ntohs( boundto4.sin_port );
break;
}
else if ( err == EAFNOSUPPORT )
{
port = PORT_ANY;
break;
}
port = ( port == PORT_ANY ) ? port : NET_EnsureValidPortNo( port + 1 );
}
if ( ip_socket == INVALID_SOCKET )
{
Com_Printf( "WARNING: Couldn't bind to an IPv4 address.\n" );
port = PORT_ANY;
}
}
if ( port != PORT_ANY && net_socksEnabled->integer )
{
NET_OpenSocks( port );
}
Cvar_Set( "net_currentPort", va( "%i", port ) );
Cvar_Set( "net_currentPort6", va( "%i", port6 ) );
}
