platform: Improve iOS OOM killer

experimental/libbox/command_server.go

@@ -60,6 +60,7 @@ func NewCommandServer(handler CommandServerHandler, platformInterface PlatformIn
 		Handler:     (*platformHandler)(server),
 		Debug:       sDebug,
 		LogMaxLines: sLogMaxLines,
+		OOMKiller:   memoryLimitEnabled,
 		// WorkingDirectory: sWorkingPath,
 		// TempDirectory:    sTempPath,
 		// UserID:           sUserID,

experimental/libbox/ffi.json

@@ -29,7 +29,6 @@
           "with_utls",
           "with_naive_outbound",
           "with_clash_api",
-          "with_conntrack",
           "badlinkname",
           "tfogo_checklinkname0",
           "with_tailscale",
@@ -59,7 +58,6 @@
           "with_wireguard",
           "with_utls",
           "with_clash_api",
-          "with_conntrack",
           "badlinkname",
           "tfogo_checklinkname0",
           "with_tailscale",
@@ -90,7 +88,6 @@
           "with_utls",
           "with_naive_outbound",
           "with_clash_api",
-          "with_conntrack",
           "badlinkname",
           "tfogo_checklinkname0",
           "with_dhcp",
@@ -134,7 +131,6 @@
           "with_naive_outbound",
           "with_purego",
           "with_clash_api",
-          "with_conntrack",
           "badlinkname",
           "tfogo_checklinkname0",
           "with_tailscale",

experimental/libbox/memory.go

@@ -4,20 +4,23 @@ import (
 	"math"
 	runtimeDebug "runtime/debug"
 
-	"github.com/sagernet/sing-box/common/conntrack"
+	C "github.com/sagernet/sing-box/constant"
 )
 
+var memoryLimitEnabled bool
+
 func SetMemoryLimit(enabled bool) {
-	const memoryLimit = 45 * 1024 * 1024
-	const memoryLimitGo = memoryLimit / 1.5
+	memoryLimitEnabled = enabled
+	const memoryLimitGo = 45 * 1024 * 1024
 	if enabled {
 		runtimeDebug.SetGCPercent(10)
-		runtimeDebug.SetMemoryLimit(memoryLimitGo)
-		conntrack.KillerEnabled = true
-		conntrack.MemoryLimit = memoryLimit
+		if C.IsIos {
+			runtimeDebug.SetMemoryLimit(memoryLimitGo)
+		}
 	} else {
 		runtimeDebug.SetGCPercent(100)
-		runtimeDebug.SetMemoryLimit(math.MaxInt64)
-		conntrack.KillerEnabled = false
+		if C.IsIos {
+			runtimeDebug.SetMemoryLimit(math.MaxInt64)
+		}
 	}
 }