Split rconlib and mcping

build.gradle.kts

@@ -1,46 +1,20 @@
-import org.jetbrains.kotlin.gradle.dsl.JvmTarget
-
 plugins {
-    kotlin("multiplatform") version "2.4.10"
+    kotlin("multiplatform") version "2.4.10" apply false
     id("maven-publish")
 }
 
+allprojects {
     group = "cn.rtast.mcping"
     version = providers.gradleProperty("libVersion").get()
 
     repositories {
         mavenCentral()
     }
-
-kotlin {
-    explicitApi()
-
-    linuxX64()
-    linuxArm64()
-    macosArm64()
-    mingwX64()
-    iosArm64()
-    iosSimulatorArm64()
-    jvm { compilerOptions.jvmTarget = JvmTarget.JVM_1_8 }
-
-    sourceSets {
-        jvmMain.dependencies {
-            // no dependencies needed
 }
 
-        nativeMain.dependencies {
-            implementation("io.ktor:ktor-network:3.5.2")
-            implementation("org.jetbrains.kotlinx:kotlinx-io-core:0.9.1")
-        }
-
-        commonTest.dependencies {
-            implementation(kotlin("test"))
-            implementation("org.jetbrains.kotlinx:kotlinx-coroutines-test:1.11.0")
-        }
-    }
-
-    compilerOptions.freeCompilerArgs.addAll("-Xexpect-actual-classes")
-}
+subprojects {
+    pluginManager.apply("org.jetbrains.kotlin.multiplatform")
+    pluginManager.apply("maven-publish")
 
     publishing {
         repositories {
@@ -55,3 +29,4 @@ publishing {
             }
         }
     }
+}

common/build.gradle.kts

@@ -0,0 +1,31 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
+kotlin {
+    explicitApi()
+
+    linuxX64()
+    linuxArm64()
+    macosArm64()
+    mingwX64()
+    iosArm64()
+    iosSimulatorArm64()
+    jvm { compilerOptions.jvmTarget = JvmTarget.JVM_1_8 }
+
+    sourceSets {
+        jvmMain.dependencies {
+            // no dependencies needed
+        }
+
+        nativeMain.dependencies {
+            implementation("io.ktor:ktor-network:3.5.2")
+            implementation("org.jetbrains.kotlinx:kotlinx-io-core:0.9.1")
+        }
+
+        commonTest.dependencies {
+            implementation(kotlin("test"))
+            implementation("org.jetbrains.kotlinx:kotlinx-coroutines-test:1.11.0")
+        }
+    }
+
+    compilerOptions.freeCompilerArgs.addAll("-Xexpect-actual-classes")
+}

common/src/commonMain/kotlin/cn/rtast/mcping/platform/buffer.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/9/3
+ */
+
+
+package cn.rtast.mcping.platform
+
+@Suppress("CLASSNAME")
+public expect class _Buffer {
+    public constructor()
+    public constructor(bytes: ByteArray)
+
+    public fun writeByte(value: Byte)
+    public fun writeShort(value: Short)
+    public fun writeLong(value: Long)
+    public fun writeBytes(bytes: ByteArray)
+
+    public fun readByte(): Byte
+    public fun readShort(): Short
+    public fun readLong(): Long
+    public fun readBytes(length: Int): ByteArray
+    public fun toByteArray(): ByteArray
+    public val size: Int
+}
+
+public fun ByteArray.wrap(): _Buffer = _Buffer(this)

common/src/commonMain/kotlin/cn/rtast/mcping/platform/channels.kt

@@ -0,0 +1,22 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/9/3
+ */
+
+
+package cn.rtast.mcping.platform
+
+@Suppress("CLASSNAME")
+public expect class _ReadChannel {
+    public fun readByte(): Byte
+    public fun readBytes(length: Int): ByteArray
+    public fun readFully(out: ByteArray, start: Int = 0, end: Int = out.size)
+    public fun readLong(): Long
+}
+
+@Suppress("CLASSNAME")
+public expect class _WriteChannel {
+    public fun writeFully(value: ByteArray, startIndex: Int = 0, endIndex: Int = value.size)
+    public fun flush()
+}

common/src/commonMain/kotlin/cn/rtast/mcping/platform/socket.kt

@@ -0,0 +1,21 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/9/3
+ */
+
+
+package cn.rtast.mcping.platform
+
+@Suppress("CLASSNAME")
+public expect class _Socket public constructor(host: String, port: Int, context: PingContext) {
+    public fun openReadChannel(): _ReadChannel
+    public fun openWriteChannel(): _WriteChannel
+    public fun close()
+}
+
+@Suppress("CLASSNAME")
+public expect class _UdpSocket public constructor(host: String, port: Int, context: PingContext) {
+    public fun sendAndReceive(data: ByteArray): ByteArray
+    public fun close()
+}

common/src/jvmMain/kotlin/cn/rtast/mcping/platform/buffer.jvm.kt

@@ -8,29 +8,29 @@ package cn.rtast.mcping.platform
 
 import java.io.ByteArrayOutputStream
 
-internal actual class PlatformBuffer {
+@Suppress("CLASSNAME")
+public actual class _Buffer {
     private val outStream = ByteArrayOutputStream()
     private var readBuffer: ByteArray? = null
     private var readOffset = 0
 
-    actual constructor()
-
-    actual constructor(bytes: ByteArray) {
+    public actual constructor()
+    public actual constructor(bytes: ByteArray) {
         this.readBuffer = bytes
         outStream.write(bytes)
     }
 
-    actual fun writeByte(value: Byte) {
+    public actual fun writeByte(value: Byte) {
         outStream.write(value.toInt())
     }
 
-    actual fun writeShort(value: Short) {
+    public actual fun writeShort(value: Short) {
         val v = value.toInt()
         outStream.write(v shr 8)
         outStream.write(v)
     }
 
-    actual fun writeLong(value: Long) {
+    public actual fun writeLong(value: Long) {
         outStream.write((value shr 56).toInt())
         outStream.write((value shr 48).toInt())
         outStream.write((value shr 40).toInt())
@@ -41,7 +41,7 @@ internal actual class PlatformBuffer {
         outStream.write(value.toInt())
     }
 
-    actual fun writeBytes(bytes: ByteArray) {
+    public actual fun writeBytes(bytes: ByteArray) {
         outStream.write(bytes)
     }
 
@@ -54,19 +54,19 @@ internal actual class PlatformBuffer {
         return buf
     }
 
-    actual fun readByte(): Byte {
+    public actual fun readByte(): Byte {
         val array = ensureReadArray()
         if (readOffset >= array.size) throw IndexOutOfBoundsException("Buffer underflow")
         return array[readOffset++]
     }
 
-    actual fun readShort(): Short {
+    public actual fun readShort(): Short {
         val b1 = readByte().toInt() and 0xFF
         val b2 = readByte().toInt() and 0xFF
         return ((b1 shl 8) or b2).toShort()
     }
 
-    actual fun readLong(): Long {
+    public actual fun readLong(): Long {
         return (readByte().toLong() and 0xFF shl 56) or
                 (readByte().toLong() and 0xFF shl 48) or
                 (readByte().toLong() and 0xFF shl 40) or
@@ -77,7 +77,7 @@ internal actual class PlatformBuffer {
                 (readByte().toLong() and 0xFF)
     }
 
-    actual fun readBytes(length: Int): ByteArray {
+    public actual fun readBytes(length: Int): ByteArray {
         val array = ensureReadArray()
         if (readOffset + length > array.size) throw IndexOutOfBoundsException("Buffer underflow")
         val result = array.copyOfRange(readOffset, readOffset + length)
@@ -85,8 +85,8 @@ internal actual class PlatformBuffer {
         return result
     }
 
-    actual fun toByteArray(): ByteArray = outStream.toByteArray()
+    public actual fun toByteArray(): ByteArray = outStream.toByteArray()
 
-    actual val size: Int
+    public actual val size: Int
         get() = outStream.size()
 }

common/src/jvmMain/kotlin/cn/rtast/mcping/platform/channels.jvm.kt

@@ -11,16 +11,17 @@ import java.io.EOFException
 import java.io.InputStream
 import java.io.OutputStream
 
-internal actual class ReadChannel {
+@Suppress("CLASSNAME")
+public actual class _ReadChannel {
     private val _inputStream: InputStream
 
-    constructor(inputStream: InputStream) {
+    public constructor(inputStream: InputStream) {
         _inputStream = inputStream
     }
 
-    actual fun readByte(): Byte = _inputStream.read().toByte()
-    actual fun readBytes(length: Int): ByteArray = _inputStream.readNBytes(length)
-    actual fun readFully(out: ByteArray, start: Int, end: Int) {
+    public actual fun readByte(): Byte = _inputStream.read().toByte()
+    public actual fun readBytes(length: Int): ByteArray = _inputStream.readNBytes(length)
+    public actual fun readFully(out: ByteArray, start: Int, end: Int) {
         var bytesRead = 0
         val length = end - start
         while (bytesRead < length) {
@@ -30,7 +31,7 @@ internal actual class ReadChannel {
         }
     }
 
-    actual fun readLong(): Long {
+    public actual fun readLong(): Long {
         val bytes = ByteArray(8)
         var read = 0
         while (read < 8) {
@@ -49,17 +50,18 @@ internal actual class ReadChannel {
     }
 }
 
-internal actual class WriteChannel {
+@Suppress("CLASSNAME")
+public actual class _WriteChannel {
     private val _outputStream: OutputStream
 
-    constructor(outputStream: OutputStream) {
+    public constructor(outputStream: OutputStream) {
         _outputStream = outputStream
     }
 
-    actual fun writeFully(value: ByteArray, startIndex: Int, endIndex: Int) =
+    public actual fun writeFully(value: ByteArray, startIndex: Int, endIndex: Int): Unit =
         _outputStream.write(value, startIndex, endIndex - startIndex)
 
-    actual fun flush() = _outputStream.flush()
+    public actual fun flush(): Unit = _outputStream.flush()
 }
 
 private fun InputStream.readNBytes(length: Int): ByteArray {

common/src/jvmMain/kotlin/cn/rtast/mcping/platform/socket.jvm.kt

@@ -11,21 +11,23 @@ import java.net.DatagramSocket
 import java.net.InetSocketAddress
 import java.net.Socket as JvmSocket
 
-internal actual class Socket internal actual constructor(host: String, port: Int, context: PingContext) {
+@Suppress("CLASSNAME")
+public actual class _Socket public actual constructor(host: String, port: Int, context: PingContext) {
     private val socket = JvmSocket(host, port)
 
-    actual fun openReadChannel(): ReadChannel = ReadChannel(socket.getInputStream())
-    actual fun openWriteChannel(): WriteChannel = WriteChannel(socket.getOutputStream())
-    actual fun close() = socket.close()
+    public actual fun openReadChannel(): _ReadChannel = _ReadChannel(socket.getInputStream())
+    public actual fun openWriteChannel(): _WriteChannel = _WriteChannel(socket.getOutputStream())
+    public actual fun close(): Unit = socket.close()
 }
 
-internal actual class UdpSocket internal actual constructor(host: String, port: Int, context: PingContext) {
+@Suppress("CLASSNAME")
+public actual class _UdpSocket public actual constructor(host: String, port: Int, context: PingContext) {
     private val socket = DatagramSocket().apply {
         soTimeout = 3000
         connect(InetSocketAddress(host, port))
     }
 
-    actual fun sendAndReceive(data: ByteArray): ByteArray {
+    public actual fun sendAndReceive(data: ByteArray): ByteArray {
         socket.send(DatagramPacket(data, data.size))
 
         val buf = ByteArray(2048)
@@ -34,5 +36,5 @@ internal actual class UdpSocket internal actual constructor(host: String, port:
         return buf.copyOf(receivePacket.length)
     }
 
-    actual fun close() = socket.close()
+    public actual fun close(): Unit = socket.close()
 }

common/src/nativeMain/kotlin/cn/rtast/mcping/platform/buffer.native.kt

@@ -0,0 +1,38 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/9/3
+ */
+
+package cn.rtast.mcping.platform
+
+import kotlinx.io.Buffer
+import kotlinx.io.readByteArray
+
+@Suppress("CLASSNAME")
+public actual class _Buffer {
+    private val _delegateBuf: Buffer
+
+    public actual constructor() {
+        _delegateBuf = Buffer()
+    }
+
+    public actual constructor(bytes: ByteArray) {
+        _delegateBuf = Buffer().apply { write(bytes) }
+    }
+
+    public actual fun writeByte(value: Byte): Unit = _delegateBuf.writeByte(value)
+    public actual fun writeShort(value: Short): Unit = _delegateBuf.writeShort(value)
+    public actual fun writeLong(value: Long): Unit = _delegateBuf.writeLong(value)
+    public actual fun writeBytes(bytes: ByteArray): Unit = _delegateBuf.write(bytes)
+
+    public actual fun readByte(): Byte = _delegateBuf.readByte()
+    public actual fun readShort(): Short = _delegateBuf.readShort()
+    public actual fun readLong(): Long = _delegateBuf.readLong()
+    public actual fun readBytes(length: Int): ByteArray = _delegateBuf.readByteArray(length)
+
+    public actual fun toByteArray(): ByteArray = _delegateBuf.peek().readByteArray()
+
+    public actual val size: Int
+        get() = _delegateBuf.size.toInt()
+}

common/src/nativeMain/kotlin/cn/rtast/mcping/platform/channels.native.kt

@@ -0,0 +1,40 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/9/3
+ */
+
+package cn.rtast.mcping.platform
+
+import io.ktor.utils.io.*
+import kotlinx.coroutines.runBlocking
+
+@Suppress("CLASSNAME")
+public actual class _ReadChannel {
+    private val _readChannel: ByteReadChannel
+
+    public constructor(readChannel: ByteReadChannel) {
+        _readChannel = readChannel
+    }
+
+    public actual fun readByte(): Byte = runBlocking { _readChannel.readByte() }
+    public actual fun readBytes(length: Int): ByteArray = runBlocking { _readChannel.readByteArray(length) }
+    public actual fun readFully(out: ByteArray, start: Int, end: Int): Unit =
+        runBlocking { _readChannel.readFully(out, start, end) }
+
+    public actual fun readLong(): Long = runBlocking { _readChannel.readLong() }
+}
+
+@Suppress("CLASSNAME")
+public actual class _WriteChannel {
+    private val _writeChannel: ByteWriteChannel
+
+    public constructor(writeChannel: ByteWriteChannel) {
+        _writeChannel = writeChannel
+    }
+
+    public actual fun writeFully(value: ByteArray, startIndex: Int, endIndex: Int): Unit =
+        runBlocking { _writeChannel.writeFully(value, startIndex, endIndex) }
+
+    public actual fun flush(): Unit = runBlocking { _writeChannel.flush() }
+}

common/src/nativeMain/kotlin/cn/rtast/mcping/platform/socket.native.kt

@@ -11,34 +11,36 @@ import io.ktor.utils.io.core.*
 import kotlinx.coroutines.runBlocking
 import kotlinx.io.readByteArray
 
-internal actual class Socket internal actual constructor(host: String, port: Int, context: PingContext) {
+@Suppress("CLASSNAME")
+public actual class _Socket public actual constructor(host: String, port: Int, context: PingContext) {
     private val ctx = context
     private val socket = runBlocking { aSocket(ctx._selectorManager).tcp().connect(host, port) }
 
-    actual fun openReadChannel(): ReadChannel = ReadChannel(socket.openReadChannel())
-    actual fun openWriteChannel(): WriteChannel =
-        WriteChannel(socket.openWriteChannel(autoFlush = true))
+    public actual fun openReadChannel(): _ReadChannel = _ReadChannel(socket.openReadChannel())
+    public actual fun openWriteChannel(): _WriteChannel =
+        _WriteChannel(socket.openWriteChannel(autoFlush = true))
 
-    actual fun close() {
+    public actual fun close() {
         socket.close()
         if (ctx._autoCloseSelectorManager) ctx._selectorManager.close()
     }
 }
 
-internal actual class UdpSocket internal actual constructor(host: String, port: Int, context: PingContext) {
+@Suppress("CLASSNAME")
+public actual class _UdpSocket public actual constructor(host: String, port: Int, context: PingContext) {
     private val ctx = context
 
     // use bind to create an unconnected socket
     private val socket = runBlocking { aSocket(ctx._selectorManager).udp().bind() }
     private val remoteAddress = InetSocketAddress(host, port)
 
-    actual fun sendAndReceive(data: ByteArray): ByteArray = runBlocking {
+    public actual fun sendAndReceive(data: ByteArray): ByteArray = runBlocking {
         val packet = buildPacket { writeFully(data) }
         socket.send(Datagram(packet, remoteAddress))
         socket.receive().packet.readByteArray()
     }
 
-    actual fun close() {
+    public actual fun close() {
         socket.close()
         if (ctx._autoCloseSelectorManager) ctx._selectorManager.close()
     }

mcping/build.gradle.kts

@@ -0,0 +1,24 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
+kotlin {
+    explicitApi()
+
+    linuxX64()
+    linuxArm64()
+    macosArm64()
+    mingwX64()
+    iosArm64()
+    iosSimulatorArm64()
+    jvm { compilerOptions.jvmTarget = JvmTarget.JVM_1_8 }
+
+    sourceSets {
+        commonMain.dependencies {
+            implementation(project(":common"))
+        }
+
+        commonTest.dependencies {
+            implementation(kotlin("test"))
+            implementation("org.jetbrains.kotlinx:kotlinx-coroutines-test:1.11.0")
+        }
+    }
+}

mcping/src/commonMain/kotlin/cn/rtast/mcping/bedrock/packet.kt

@@ -7,9 +7,8 @@
 
 package cn.rtast.mcping.bedrock
 
-import cn.rtast.mcping.platform.PlatformBuffer
+import cn.rtast.mcping.platform._Buffer
 import kotlin.random.Random
-import kotlin.time.Clock
 
 private val rakNetMagic = byteArrayOf(
     0x00, 0xFF.toByte(),
@@ -26,7 +25,7 @@ internal interface MinecraftBedrockPacket {
     val time: Long
     val magic: ByteArray
 
-    fun writePayload(buffer: PlatformBuffer)
+    fun writePayload(buffer: _Buffer)
 }
 
 internal data class BedrockRequestPacket(
@@ -36,7 +35,7 @@ internal data class BedrockRequestPacket(
 ) : MinecraftBedrockPacket {
     override val packetId: Byte = 0x01
 
-    override fun writePayload(buffer: PlatformBuffer) {
+    override fun writePayload(buffer: _Buffer) {
         buffer.writeByte(packetId)
         buffer.writeLong(time)
         buffer.writeBytes(magic)
@@ -71,7 +70,7 @@ internal data class BedrockResponsePacket(
     val stringLength: Short,
     val payload: String,
 ) : MinecraftBedrockPacket {
-    override fun writePayload(buffer: PlatformBuffer) {}
+    override fun writePayload(buffer: _Buffer) {}
 
     override fun equals(other: Any?): Boolean {
         if (this === other) return true

mcping/src/commonMain/kotlin/cn/rtast/mcping/bedrock/packet_writer.kt

@@ -0,0 +1,17 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/9/3
+ */
+
+
+package cn.rtast.mcping.bedrock
+
+import cn.rtast.mcping.platform._Buffer
+import cn.rtast.mcping.platform._UdpSocket
+
+internal fun _UdpSocket.sendPacket(packet: MinecraftBedrockPacket): ByteArray  {
+    val buf = _Buffer()
+    packet.writePayload(buf)
+    return sendAndReceive(buf.toByteArray())
+}

mcping/src/commonMain/kotlin/cn/rtast/mcping/bedrock/ping_bedrock.kt

@@ -9,12 +9,12 @@ package cn.rtast.mcping.bedrock
 
 import cn.rtast.mcping.PingResponse
 import cn.rtast.mcping.platform.PingContext
-import cn.rtast.mcping.platform.UdpSocket
+import cn.rtast.mcping.platform._UdpSocket
 import cn.rtast.mcping.platform.wrap
 import kotlin.time.Clock
 
 internal fun pingBedrockServer(host: String, port: Int, context: PingContext): PingResponse {
-    val socket = UdpSocket(host, port, context)
+    val socket = _UdpSocket(host, port, context)
     return try {
         val sendTime = Clock.System.now().toEpochMilliseconds()
         val packet = BedrockRequestPacket(sendTime)

mcping/src/commonMain/kotlin/cn/rtast/mcping/java/mc_primitives.kt

@@ -6,11 +6,11 @@
 
 package cn.rtast.mcping.java
 
-import cn.rtast.mcping.platform.PlatformBuffer
-import cn.rtast.mcping.platform.ReadChannel
+import cn.rtast.mcping.platform._Buffer
+import cn.rtast.mcping.platform._ReadChannel
 
 
-internal fun PlatformBuffer.writeVarInt(value: Int) {
+internal fun _Buffer.writeVarInt(value: Int) {
     var v = value
     while (true) {
         if ((v and 0x7F.inv()) == 0) {
@@ -22,7 +22,7 @@ internal fun PlatformBuffer.writeVarInt(value: Int) {
     }
 }
 
-internal fun ReadChannel.readVarInt(): Int {
+internal fun _ReadChannel.readVarInt(): Int {
     var value = 0
     var position = 0
     while (true) {
@@ -35,13 +35,13 @@ internal fun ReadChannel.readVarInt(): Int {
     return value
 }
 
-internal fun PlatformBuffer.writeMcString(value: String) {
+internal fun _Buffer.writeMcString(value: String) {
     val bytes = value.encodeToByteArray()
     this.writeVarInt(bytes.size)
     this.writeBytes(bytes)
 }
 
-internal fun ReadChannel.readMcString(): String {
+internal fun _ReadChannel.readMcString(): String {
     val length = this.readVarInt()
     val bytes = this.readBytes(length)
     return bytes.decodeToString()

mcping/src/commonMain/kotlin/cn/rtast/mcping/java/packet.kt

@@ -7,12 +7,12 @@
 
 package cn.rtast.mcping.java
 
-import cn.rtast.mcping.platform.PlatformBuffer
+import cn.rtast.mcping.platform._Buffer
 
 internal interface MinecraftPacket {
     val packetId: Int
 
-    fun writePayload(buffer: PlatformBuffer)
+    fun writePayload(buffer: _Buffer)
 }
 
 // ref https://minecraft.wiki/w/Java_Edition_protocol/Packets#Handshake
@@ -25,7 +25,7 @@ internal data class HandshakePacket(
 ) : MinecraftPacket {
     override val packetId: Int = 0x00
 
-    override fun writePayload(buffer: PlatformBuffer) {
+    override fun writePayload(buffer: _Buffer) {
         buffer.writeVarInt(protocolVersion)
         buffer.writeMcString(serverAddress)
         // write UShort
@@ -39,10 +39,10 @@ internal data class HandshakePacket(
 // ref https://minecraft.wiki/w/Java_Edition_protocol/Packets#Status
 internal data object StatusRequestPacket : MinecraftPacket {
     override val packetId: Int = 0x00
-    override fun writePayload(buffer: PlatformBuffer) {}
+    override fun writePayload(buffer: _Buffer) {}
 }
 
 internal data class PingPacket(val currentTime: Long) : MinecraftPacket {
     override val packetId: Int = 0x01
-    override fun writePayload(buffer: PlatformBuffer) = buffer.writeLong(currentTime)
+    override fun writePayload(buffer: _Buffer) = buffer.writeLong(currentTime)
 }

mcping/src/commonMain/kotlin/cn/rtast/mcping/java/packet_writer.kt

@@ -7,14 +7,14 @@
 
 package cn.rtast.mcping.java
 
-import cn.rtast.mcping.platform.PlatformBuffer
-import cn.rtast.mcping.platform.WriteChannel
+import cn.rtast.mcping.platform._Buffer
+import cn.rtast.mcping.platform._WriteChannel
 
-internal fun WriteChannel.sendPacket(packet: MinecraftPacket) {
-    val bodyBuffer = PlatformBuffer()
+internal fun _WriteChannel.sendPacket(packet: MinecraftPacket) {
+    val bodyBuffer = _Buffer()
     bodyBuffer.writeVarInt(packet.packetId)
     packet.writePayload(bodyBuffer)
-    val frameBuffer = PlatformBuffer()
+    val frameBuffer = _Buffer()
     frameBuffer.writeVarInt(bodyBuffer.size)
     frameBuffer.writeBytes(bodyBuffer.toByteArray())
     val bytes = frameBuffer.toByteArray()

mcping/src/commonMain/kotlin/cn/rtast/mcping/java/ping_java.kt

@@ -9,11 +9,11 @@ package cn.rtast.mcping.java
 
 import cn.rtast.mcping.PingResponse
 import cn.rtast.mcping.platform.PingContext
-import cn.rtast.mcping.platform.Socket
+import cn.rtast.mcping.platform._Socket
 import kotlin.time.Clock
 
 internal fun pingJavaServer(host: String, port: Int, context: PingContext): PingResponse {
-    val socket = Socket(host, port, context)
+    val socket = _Socket(host, port, context)
     val receiveChannel = socket.openReadChannel()
     val sendChannel = socket.openWriteChannel()
 

rconlib/build.gradle.kts

@@ -0,0 +1,24 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
+kotlin {
+    explicitApi()
+
+    linuxX64()
+    linuxArm64()
+    macosArm64()
+    mingwX64()
+    iosArm64()
+    iosSimulatorArm64()
+    jvm { compilerOptions.jvmTarget = JvmTarget.JVM_1_8 }
+
+    sourceSets {
+        commonMain.dependencies {
+            implementation(project(":common"))
+        }
+
+        commonTest.dependencies {
+            implementation(kotlin("test"))
+            implementation("org.jetbrains.kotlinx:kotlinx-coroutines-test:1.11.0")
+        }
+    }
+}

rconlib/src/commonMain/kotlin/cn/rtast/mcping/rconlib/rconlib.kt

@@ -0,0 +1,9 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/9/4
+ */
+
+
+package cn.rtast.mcping.rconlib
+

settings.gradle.kts

@@ -2,3 +2,7 @@ plugins {
     id("org.gradle.toolchains.foojay-resolver-convention") version "0.8.0"
 }
 rootProject.name = "mcping"
+
+include(":mcping")
+include(":rconlib")
+include(":common")

src/commonMain/kotlin/cn/rtast/mcping/bedrock/packet_writer.kt

@@ -1,17 +0,0 @@
-/*
- * Copyright © 2026 RTAkland
- * Author: RTAkland
- * Date: 2026/9/3
- */
-
-
-package cn.rtast.mcping.bedrock
-
-import cn.rtast.mcping.platform.PlatformBuffer
-import cn.rtast.mcping.platform.UdpSocket
-
-internal fun UdpSocket.sendPacket(packet: MinecraftBedrockPacket): ByteArray  {
-    val buf = PlatformBuffer()
-    packet.writePayload(buf)
-    return sendAndReceive(buf.toByteArray())
-}

src/commonMain/kotlin/cn/rtast/mcping/platform/buffer.kt

@@ -1,27 +0,0 @@
-/*
- * Copyright © 2026 RTAkland
- * Author: RTAkland
- * Date: 2026/9/3
- */
-
-
-package cn.rtast.mcping.platform
-
-internal expect class PlatformBuffer {
-    constructor()
-    constructor(bytes: ByteArray)
-
-    fun writeByte(value: Byte)
-    fun writeShort(value: Short)
-    fun writeLong(value: Long)
-    fun writeBytes(bytes: ByteArray)
-
-    fun readByte(): Byte
-    fun readShort(): Short
-    fun readLong(): Long
-    fun readBytes(length: Int): ByteArray
-    fun toByteArray(): ByteArray
-    val size: Int
-}
-
-internal fun ByteArray.wrap(): PlatformBuffer = PlatformBuffer(this)

src/commonMain/kotlin/cn/rtast/mcping/platform/channels.kt

@@ -1,20 +0,0 @@
-/*
- * Copyright © 2026 RTAkland
- * Author: RTAkland
- * Date: 2026/9/3
- */
-
-
-package cn.rtast.mcping.platform
-
-internal expect class ReadChannel {
-    fun readByte(): Byte
-    fun readBytes(length: Int): ByteArray
-    fun readFully(out: ByteArray, start: Int = 0, end: Int = out.size)
-    fun readLong(): Long
-}
-
-internal expect class WriteChannel {
-    fun writeFully(value: ByteArray, startIndex: Int = 0, endIndex: Int = value.size)
-    fun flush()
-}

src/commonMain/kotlin/cn/rtast/mcping/platform/socket.kt

@@ -1,19 +0,0 @@
-/*
- * Copyright © 2026 RTAkland
- * Author: RTAkland
- * Date: 2026/9/3
- */
-
-
-package cn.rtast.mcping.platform
-
-internal expect class Socket internal constructor(host: String, port: Int, context: PingContext) {
-    fun openReadChannel(): ReadChannel
-    fun openWriteChannel(): WriteChannel
-    fun close()
-}
-
-internal expect class UdpSocket internal constructor(host: String, port: Int, context: PingContext) {
-    fun sendAndReceive(data: ByteArray): ByteArray
-    fun close()
-}

src/nativeMain/kotlin/cn/rtast/mcping/platform/buffer.native.kt

@@ -1,37 +0,0 @@
-/*
- * Copyright © 2026 RTAkland
- * Author: RTAkland
- * Date: 2026/9/3
- */
-
-package cn.rtast.mcping.platform
-
-import kotlinx.io.Buffer
-import kotlinx.io.readByteArray
-
-internal actual class PlatformBuffer {
-    private val _delegateBuf: Buffer
-
-    actual constructor() {
-        _delegateBuf = Buffer()
-    }
-
-    actual constructor(bytes: ByteArray) {
-        _delegateBuf = Buffer().apply { write(bytes) }
-    }
-
-    actual fun writeByte(value: Byte) = _delegateBuf.writeByte(value)
-    actual fun writeShort(value: Short) = _delegateBuf.writeShort(value)
-    actual fun writeLong(value: Long) = _delegateBuf.writeLong(value)
-    actual fun writeBytes(bytes: ByteArray) = _delegateBuf.write(bytes)
-
-    actual fun readByte(): Byte = _delegateBuf.readByte()
-    actual fun readShort(): Short = _delegateBuf.readShort()
-    actual fun readLong(): Long = _delegateBuf.readLong()
-    actual fun readBytes(length: Int): ByteArray = _delegateBuf.readByteArray(length)
-
-    actual fun toByteArray(): ByteArray = _delegateBuf.peek().readByteArray()
-
-    actual val size: Int
-        get() = _delegateBuf.size.toInt()
-}

src/nativeMain/kotlin/cn/rtast/mcping/platform/channels.native.kt

@@ -1,36 +0,0 @@
-/*
- * Copyright © 2026 RTAkland
- * Author: RTAkland
- * Date: 2026/9/3
- */
-
-package cn.rtast.mcping.platform
-
-import io.ktor.utils.io.*
-import kotlinx.coroutines.runBlocking
-
-internal actual class ReadChannel {
-    private val _readChannel: ByteReadChannel
-
-    constructor(readChannel: ByteReadChannel) {
-        _readChannel = readChannel
-    }
-
-    actual fun readByte(): Byte = runBlocking { _readChannel.readByte() }
-    actual fun readBytes(length: Int): ByteArray = runBlocking { _readChannel.readByteArray(length) }
-    actual fun readFully(out: ByteArray, start: Int, end: Int) = runBlocking { _readChannel.readFully(out, start, end) }
-    actual fun readLong(): Long = runBlocking { _readChannel.readLong() }
-}
-
-internal actual class WriteChannel {
-    private val _writeChannel: ByteWriteChannel
-
-    constructor(writeChannel: ByteWriteChannel) {
-        _writeChannel = writeChannel
-    }
-
-    actual fun writeFully(value: ByteArray, startIndex: Int, endIndex: Int) =
-        runBlocking { _writeChannel.writeFully(value, startIndex, endIndex) }
-
-    actual fun flush() = runBlocking { _writeChannel.flush() }
-}