engine: client: implement errormsg, secure client by checking server IP address we're connected to

engine/common/common.h

@@ -851,7 +851,6 @@ qboolean CL_IsInConsole( void );
 qboolean CL_IsThirdPerson( void );
 qboolean CL_IsIntermission( void );
 qboolean CL_Initialized( void );
-void CL_WarnLostSplitPacket( void );
 char *CL_Userinfo( void );
 void CL_LegacyUpdateInfo( void );
 void CL_CharEvent( int key );
@@ -952,6 +951,7 @@ void GL_FreeImage( const char *name );
 void VID_InitDefaultResolution( void );
 void VID_Init( void );
 void UI_SetActiveMenu( qboolean fActive );
+void UI_ShowConnectionWarning( void );
 void Cmd_Null_f( void );
 
 // soundlib shared exports

engine/common/dedicated.c

@@ -327,7 +327,7 @@ void CL_ClearStaticEntities( void )
 
 }
 
-void CL_WarnLostSplitPacket( void )
+void UI_ShowConnectionWarning( void )
 {
 
 }

engine/common/net_chan.c

@@ -140,7 +140,7 @@ qboolean NetSplit_GetLong( netsplit_t *ns, netadr_t *from, byte *data, size_t *l
 		// warn if previous packet not received
 		if( p->received < p->count )
 		{
-			CL_WarnLostSplitPacket();
+			UI_ShowConnectionWarning();
 			Con_Reportf( S_WARN "NetSplit_GetLong: lost packet %d\n", p->id );
 		}