Fix macos mdns and support macosx64

README.md

@@ -2,14 +2,15 @@
 
 A Kotlin multiplatform library for mdns announcer(mdns server), only broadcast is supported, 
 
-Also, nmdns can be compiled to shared/static lib for other language calling, see [build.gradle.kts](build.gradle.kts)
+Also, nmdns can be compiled to shared/static lib for other language calling, see [c++ example](#cpp)
 
 Supported platforms:
 1. windows64(mingwx64)
 2. linuxX64
 3. linuxArm64
 4. macosArm64
-5. jvm(11 or later)
+5. macosX64
+6. jvm(11 or later)
 
 Supported srv type
 1. A
@@ -64,7 +65,7 @@ while (true) {
 }
 ```
 
-# C++
+# cpp
 
 ```cpp
 #include <csignal>

build.gradle.kts

@@ -17,7 +17,8 @@ kotlin {
         linuxArm64(),
         linuxX64(),
         mingwX64(),
-        macosArm64()
+        macosArm64(),
+        macosX64()
     )
     jvm { compilerOptions { jvmTarget = JvmTarget.JVM_11 } }
 

src/appleMain/kotlin/cn/rtast/nmdns/socket.apple.kt

@@ -34,7 +34,7 @@ public actual class Socket1 internal actual constructor() {
             val addr = alloc<sockaddr_in>()
             addr.sin_family = AF_INET.convert()
             addr.sin_port = htons(port.toUShort())
-            addr.sin_addr.s_addr = htonl(INADDR_ANY)
+            addr.sin_addr.s_addr = inet_addr(ip)
             if (bind(socket, addr.ptr.reinterpret(), sizeOf<sockaddr_in>().convert()) < 0) {
                 perror("Failed to bind")
                 close(socket)
@@ -43,8 +43,8 @@ public actual class Socket1 internal actual constructor() {
         memScoped {
             val mreq = alloc<ip_mreq>()
             mreq.imr_multiaddr.s_addr = inet_addr("224.0.0.251")
-            mreq.imr_interface.s_addr = htonl(INADDR_ANY)
+            mreq.imr_interface.s_addr = inet_addr(ip)
-            if (setsockopt(socket, IPPROTO_TP, IP_ADD_MEMBERSHIP, mreq.ptr, sizeOf<ip_mreq>().convert()) < 0) {
+            if (setsockopt(socket, IPPROTO_IP, IP_ADD_MEMBERSHIP, mreq.ptr, sizeOf<ip_mreq>().convert()) < 0) {
                 perror("setsockopt IP_ADD_MEMBERSHIP")
             }
         }