A few more platform fixes

- minbase_identify will now check for _GAMING_XBOX_XBOXONE and
  _GAMING_XBOX_SCARLETT.  (And also _GAMING_XBOX)
- Added IsXboxScarlett() and IsXbox()
- A few places in the low level code need to be tweaked based on IsXbox()
  instead of _XBOX_ONE
- Added IsIOS() and IsTVOS()

Deleted some code that was disabling warnings, I don't think it's needed
anymore.

Tweak defines in CSteamNetworkingUtils::GetPlatformString

PS4/PS5 need Microsoft-style __declspec(dllexport)

P4:7324318

include/steam/steamnetworkingtypes.h

@@ -31,7 +31,7 @@
 #if defined( STEAMNETWORKINGSOCKETS_STATIC_LINK )
 	#define STEAMNETWORKINGSOCKETS_INTERFACE extern "C"
 #elif defined( STEAMNETWORKINGSOCKETS_FOREXPORT )
-	#ifdef _WIN32
+	#if defined( _WIN32 ) || defined( __ORBIS__ ) || defined( __PROSPERO__ )
 		#define STEAMNETWORKINGSOCKETS_INTERFACE extern "C" __declspec( dllexport )
 	#else
 		#define STEAMNETWORKINGSOCKETS_INTERFACE extern "C" __attribute__((visibility("default")))

src/public/minbase/minbase_identify.h

@@ -118,9 +118,12 @@
 	#define IsDebug() false
 #endif
 
-#if defined( _XBOX_ONE )
+#if defined( _XBOX_ONE ) || defined( _GAMING_XBOX_XBOXONE )
 	#define IsXboxOne() true
 	#define IsConsole() true
+#elif defined( _GAMING_XBOX_SCARLETT )
+	#define IsXboxScarlett() true
+	#define IsConsole() true
 #elif defined( NN_NINTENDO_SDK )
 	#ifndef _WIN32
 		#define IsPosix() true
@@ -147,7 +150,12 @@
 		#define SUPPORTS_IOPOLLINGHELPER
 		#define IsOSX() true
 		#define IsPosix() true
-	//#elif defined( TARGET_OS_IPHONE )
+	#elif defined( TARGET_OS_IPHONE )
+		#define IsIOS() true
+		#define IsPosix() true
+	#elif defined( TARGET_OS_TV )
+		#define IsTVOS() true
+		#define IsPosix() true
 	#else
 		#error "Unsupported platform"
 	#endif
@@ -179,6 +187,13 @@
 #ifndef IsXboxOne
 	#define IsXboxOne() false
 #endif
+#ifndef IsXboxScarlett
+	#define IsXboxScarlett() false
+#endif
+#define IsXbox() ( IsXboxOne() || IsXboxScarlett() )
+#if defined( _GAMING_XBOX ) && !IsXbox()
+	#error "_GAMING_XBOX_XBOXONE or _GAMING_XBOX_SCARLETT should be defined"
+#endif
 #ifndef IsPS4
 	#define IsPS4() false
 #endif
@@ -186,6 +201,18 @@
 	#define IsPS5() false
 #endif
 #define IsPlaystation() ( IsPS4() || IsPS5() )
+#ifndef IsIOS
+	#define IsIOS() false
+	#if defined(IOS) || defined(__IOS__)
+		#error "TVOS detection not working"
+	#endif
+#endif
+#ifndef IsTVOS
+	#define IsTVOS() false
+	#if defined(TVOS) || defined(__TVOS__)
+		#error "TVOS detection not working"
+	#endif
+#endif
 #ifndef IsLinux
 	#define IsLinux() false
 #endif

src/steamnetworkingsockets/clientlib/csteamnetworkingsockets.cpp

@@ -2386,9 +2386,8 @@ const char *CSteamNetworkingUtils::GetPlatformString()
 {
 	#if IsNintendoSwitch()
 		return "nswitch";
-	#elif defined( _GAMECORE )
-		// Is this right?  This might actually require a system call.
-		return "xboxx";
+	#elif IsXboxScarlett()
+		return "scarlett";
 	#elif defined( _STADIA )
 		// Not sure if this works.
 		return "stadia";
@@ -2398,16 +2397,10 @@ const char *CSteamNetworkingUtils::GetPlatformString()
 		return "ps4";
 	#elif IsPS5()
 		return "ps5";
-	#elif defined( TVOS ) || defined( __TVOS__ )
+	#elif IsTVOS()
 		return "tvos";
-	#elif defined( __APPLE__ )
-		#if TARGET_OS_TV
-			return "tvos";
-		#elif TARGET_OS_IPHONE
-			return "ios";
-		#else
-			return "osx";
-		#endif
+	#elif IsIOS()
+		return "ios";
 	#elif IsOSX()
 		return "osx";
 	#elif IsAndroid()

src/steamnetworkingsockets/clientlib/steamnetworkingsockets_lowlevel.cpp

@@ -1,16 +1,4 @@
 //====== Copyright Valve Corporation, All rights reserved. ====================
-
-#if defined( _MSC_VER ) && ( _MSC_VER <= 1800 )
-	#pragma warning( disable: 4244 )
-	// 1>C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\include\chrono(749): warning C4244: '=' : conversion from '__int64' to 'time_t', possible loss of data (steamnetworkingsockets_lowlevel.cpp)
-#endif
-
-#ifdef __GNUC__
-	// src/public/tier0/basetypes.h:104:30: error: assuming signed overflow does not occur when assuming that (X + c) < X is always false [-Werror=strict-overflow]
-	// current steamrt:scout gcc "g++ (SteamRT 4.8.4-1ubuntu15~12.04+steamrt1.2+srt1) 4.8.4" requires this at the top due to optimizations
-	#pragma GCC diagnostic ignored "-Wstrict-overflow"
-#endif
-
 #include <thread>
 #include <mutex>
 #include <atomic>
@@ -1009,7 +997,7 @@ public:
 				nullptr // lpCompletionRoutine
 			);
 			bool bResult = ( r == 0 );
-			#ifndef _XBOX_ONE
+			#if !IsXbox()
 				if ( !bResult )
 				{
 					const char *lpMsgBuf = nullptr;
@@ -3255,12 +3243,12 @@ bool BSteamNetworkingSocketsLowLevelAddRef( SteamNetworkingErrMsg &errMsg )
 				return false;
 			}
 
-			#ifndef _XBOX_ONE
+			#if !IsXbox()
 				#pragma comment( lib, "winmm.lib" )
 				if ( ::timeBeginPeriod( 1 ) != 0 )
 				{
 					::WSACleanup();
-					#ifdef _XBOX_ONE
+					#ifdef _XBOX_ONE // Yes I realize this is always false here, but this is shutdown that needs to happen at every return
 						::CoUninitialize();
 					#endif
 					V_strcpy_safe( errMsg, "timeBeginPeriod failed" );
@@ -3475,7 +3463,7 @@ void SteamNetworkingSocketsLowLevelDecRef()
 
 	// Nuke sockets and COM
 	#ifdef _WIN32
-		#ifndef _XBOX_ONE
+		#if !IsXbox()
 			::timeEndPeriod( 1 );
 		#endif
 		::WSACleanup();