update

README.md

@@ -1,9 +1,9 @@
 # native-mdns
 
 A Kotlin multiplatform library for mdns announcer(mdns server), only broadcast is supported, 
-it depends on ktor-network
+it depends on ktor-network.
 
-support PTR.
+Also, nmdns can be compiled to shared/static lib for other language usage, see [build.gradle.kts](build.gradle.kts)
 
 Supported platforms:
 1. windows64(mingwx64)
@@ -12,6 +12,11 @@ Supported platforms:
 4. macosArm64
 5. jvm(11 or later)
 
+Supported srv type
+1. A
+2. PTR
+
+> AAAA is not supported
 
 AirPlay2(_airplay._tcp.local.) is tested
 
@@ -35,7 +40,7 @@ kotlin {
 
     sourceSets {
         commonMain.dependencies {
-            implementation("cn.rtast.nmdns:native-mdns:0.0.1")
+            implementation("cn.rtast.nmdns:native-mdns:0.0.2")
         }
     }
 }
@@ -44,7 +49,7 @@ kotlin {
 There is a simple airplay2 service
 
 ```kotlin
-            val service = createService(
+val service = registerService(
     serviceType = "_airplay._tcp.local.",
     serviceName = "AP@RTAST",
     hostname = "rtakland.local.",
@@ -52,9 +57,9 @@ There is a simple airplay2 service
     port = 7001,
     bindAddress = "192.168.10.104",
     mdnsPort = 5356,
-            )
+)
-            while (true) {
+while (true) {
     service.broadcast()
-                delay(2000L)
+    delay(2000L) // or use cn.rtast.nmdns.sleep1(2) sleep 2 seconds
-            }
+}
 ```

build.gradle.kts

@@ -6,19 +6,32 @@ plugins {
 }
 
 group = "cn.rtast.nmdns"
-version = "0.0.1"
+version = "0.0.2"
 
 repositories {
     mavenCentral()
 }
 
 kotlin {
-    linuxArm64()
+    val nativeTargets = listOf(
-    linuxX64()
+        linuxArm64(),
-    mingwX64()
+        linuxX64(),
+        mingwX64(),
         macosArm64()
+    )
     jvm { compilerOptions { jvmTarget = JvmTarget.JVM_11 } }
 
+    nativeTargets.forEach {
+        it.binaries {
+            staticLib {
+                baseName = "nmdns"
+            }
+            sharedLib {
+                baseName = "nmdns"
+            }
+        }
+    }
+
     sourceSets {
         commonMain.dependencies {
             implementation("io.ktor:ktor-network:3.2.3")
@@ -42,3 +55,27 @@ publishing {
         }
     }
 }
+
+/**
+ * link all targets static lib
+ * Apple target can only be compiled on macos
+ */
+tasks.register("linkStaticLibrary") {
+    group = "nmdns"
+    dependsOn(tasks.named("linkReleaseStaticLinuxArm64"))
+    dependsOn(tasks.named("linkReleaseStaticLinuxX64"))
+    dependsOn(tasks.named("linkReleaseStaticMacosArm64"))
+    dependsOn(tasks.named("linkReleaseStaticMingwX64"))
+}
+
+/**
+ * link all targrts to shared lib
+ * Apple target can only be compiled on macos
+ */
+tasks.register("linkSharedLibrary") {
+    group = "nmdns"
+    dependsOn(tasks.named("linkReleaseSharedLinuxArm64"))
+    dependsOn(tasks.named("linkReleaseSharedLinuxX64"))
+    dependsOn(tasks.named("linkReleaseSharedMacosArm64"))
+    dependsOn(tasks.named("linkReleaseSharedMingwX64"))
+}

src/commonMain/kotlin/cn/rtast/nmdns/mac.kt

@@ -40,4 +40,7 @@ private val macAddresses = listOf(
     "c3:c9:1c:3d:ae:dd"
 )
 
+/**
+ * get random mac address
+ */
 fun randomMacAddress(): String = macAddresses.random()

src/commonMain/kotlin/cn/rtast/nmdns/nmdns_server.kt

@@ -13,58 +13,62 @@ import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.Dispatchers
 import kotlinx.io.Buffer
 
-data class NMDNSServer(
+data class NMDNSAnnouncer(
     /**
      * coroutine dispatcher for running server
      */
-    val dispatcher: CoroutineDispatcher = Dispatchers.Default,
+    internal val dispatcher: CoroutineDispatcher = Dispatchers.Default,
     /**
      * service type
-     * default airplay
+     * airplay service type: _airplay._tcp.local.
      */
-    val serviceType: String = "_airplay._tcp.local.",
+    internal val serviceType: String,
     /**
      * service name
-     * finally: $serviceName.$serviceType
      */
-    val serviceName: String = "APS",
+    internal val serviceName: String,
     /**
      * local hostname
      */
-    val hostname: String,
+    internal val hostname: String,
     /**
      * service ip, lan ip mostly
      */
-    val ipAddress: String,
+    internal val ipAddress: String,
     /**
      * service port
      */
-    val port: Int = 7004,
+    internal val port: Int = 7004,
     /**
      * mdns server port
      */
-    val mdnsPort: Int = 3025,
+    internal val mdnsPort: Int = 3025,
     /**
-     * Txt record content
+     * txt record content
      */
-    val txtRecords: List<String> = listOf(
+    internal val txtRecords: List<String>,
-        "deviceid=01:23:45:67:89:AB",
-        "model=AppleTV3,2C",
-        "features=0x5A7FFFF7,0x1E",
-        "srcvers=220.68",
-        "pk=f3769a660475d27b4f6040381d784645e13e21c53e6d2da6a8c3d757086fc336"
-    ),
     /**
      * mdns socket server
      */
-    val server: BoundDatagramSocket,
+    internal val server: BoundDatagramSocket,
     /**
      * srv packet
      */
-    val packet: Buffer,
+    internal val packet: Buffer,
 )
 
-suspend fun createService(
+/**
+ * register service
+ * airplay2 txt records
+ * listOf(
+ *     "deviceid=${randomMacAddress()}",
+ *     "model=AppleTV3,2C",
+ *     "features=0x5A7FFFF7,0x1E",
+ *     "srcvers=220.68",
+ *     "pk=f3769a660475d27b4f6040381d784645e13e21c53e6d2da6a8c3d757086fc336"
+ * )
+ */
+suspend fun registerService(
     serviceType: String,
     serviceName: String,
     hostname: String,
@@ -72,25 +76,29 @@ suspend fun createService(
     port: Int,
     mdnsPort: Int = 9872,
     bindAddress: String,
-    txtRecords: List<String> = listOf(
+    txtRecords: List<String>,
-        "deviceid=${randomMacAddress()}",
+): NMDNSAnnouncer {
-        "model=AppleTV3,2C",
-        "features=0x5A7FFFF7,0x1E",
-        "srcvers=220.68",
-        "pk=f3769a660475d27b4f6040381d784645e13e21c53e6d2da6a8c3d757086fc336"
-    ),
-): NMDNSServer {
     val manager = SelectorManager(Dispatchers.Default)
     val serverSocket = aSocket(manager).udp()
         .bind(InetSocketAddress(bindAddress, mdnsPort))
-    return NMDNSServer(
+    return NMDNSAnnouncer(
-        Dispatchers.Default, serviceType, serviceName,
+        Dispatchers.Default,
-        hostname, ipAddress, port, mdnsPort,
+        serviceType,
-        txtRecords, serverSocket, buildPacket(serviceType, "$serviceName.$serviceType", hostname, ipAddress, port, txtRecords)
+        serviceName,
+        hostname,
+        ipAddress,
+        port,
+        mdnsPort,
+        txtRecords,
+        serverSocket,
+        buildPacket(serviceType, "$serviceName.$serviceType", hostname, ipAddress, port, txtRecords)
     )
 }
 
-suspend fun NMDNSServer.broadcast() {
+/**
+ * broadcast packet
+ */
+suspend fun NMDNSAnnouncer.broadcast() {
     this.server.send(Datagram(packet.copy(), InetSocketAddress("224.0.0.251", 5353)))
 }
 

src/commonMain/kotlin/cn/rtast/nmdns/sleep1.kt

@@ -7,4 +7,8 @@
 
 package cn.rtast.nmdns
 
+/**
+ * block current thread
+ * unit: second
+ */
 internal expect fun sleep1(time: Int)

src/jvmTest/kotlin/test/JvmTest.kt

@@ -8,7 +8,8 @@
 package test
 
 import cn.rtast.nmdns.broadcast
-import cn.rtast.nmdns.createService
+import cn.rtast.nmdns.randomMacAddress
+import cn.rtast.nmdns.registerService
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.runBlocking
 import org.junit.Test
@@ -40,14 +41,21 @@ class JvmTest {
 //                println("sent")
 //                delay(2000L)
 //            }
-            val service = createService(
+            val service = registerService(
                 serviceType = "_airplay._tcp.local.",
                 serviceName = "AP@RTAST",
                 hostname = "rtakland.local.",
                 ipAddress = "192.168.10.104",
                 port = 7001,
                 bindAddress = "192.168.10.104",
-                mdnsPort = 5356
+                mdnsPort = 5356,
+                txtRecords = listOf(
+                    "deviceid=${randomMacAddress()}",
+                    "model=AppleTV3,2C",
+                    "features=0x5A7FFFF7,0x1E",
+                    "srcvers=220.68",
+                    "pk=f3769a660475d27b4f6040381d784645e13e21c53e6d2da6a8c3d757086fc336"
+                )
             )
             while (true) {
                 service.broadcast()

src/linuxTest/kotlin/test/LinuxTest.kt

@@ -1,16 +1,16 @@
 /*
- * Copyright © 2025 RTAkland
+* Copyright © 2025 RTAkland
- * Author: RTAkland
+* Author: RTAkland
- * Date: 9/29/25
+* Date: 9/29/25
- */
+*/
 
 
 package test
 
 import cn.rtast.nmdns.broadcast
-import cn.rtast.nmdns.createService
+import cn.rtast.nmdns.randomMacAddress
+import cn.rtast.nmdns.registerService
 import cn.rtast.nmdns.sleep1
-import kotlinx.coroutines.delay
 import kotlinx.coroutines.runBlocking
 import kotlin.test.Test
 
@@ -18,14 +18,21 @@ class LinuxTest {
     @Test
     fun `test on linux`() {
         runBlocking {
-            val service = createService(
+            val service = registerService(
                 serviceType = "_airplay._tcp.local.",
                 serviceName = "AP@RTAST",
                 hostname = "rtakland.local.",
                 ipAddress = "192.168.10.104",
                 port = 7001,
                 bindAddress = "192.168.10.104",
-                mdnsPort = 5356
+                mdnsPort = 5356,
+                txtRecords = listOf(
+                    "deviceid=${randomMacAddress()}",
+                    "model=AppleTV3,2C",
+                    "features=0x5A7FFFF7,0x1E",
+                    "srcvers=220.68",
+                    "pk=f3769a660475d27b4f6040381d784645e13e21c53e6d2da6a8c3d757086fc336"
+                )
             )
             while (true) {
                 service.broadcast()