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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| package com.m3u.data.net.udp | ||
|
|
||
| import kotlinx.coroutines.Dispatchers | ||
| import kotlinx.coroutines.channels.awaitClose | ||
| import kotlinx.coroutines.flow.Flow | ||
| import kotlinx.coroutines.flow.channelFlow | ||
| import kotlinx.coroutines.flow.flowOn | ||
| import java.net.DatagramPacket | ||
| import java.net.DatagramSocket | ||
| import java.net.InetAddress | ||
| import java.nio.charset.Charset | ||
|
|
||
| interface Broadcast { | ||
| fun send(bytes: ByteArray) | ||
| fun receive(): Flow<ByteArray> | ||
| } | ||
|
|
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| data class LocalCode( | ||
| val host: String, | ||
| val port: Int, | ||
| val code: Int, | ||
| val expiration: Long | ||
| ) { | ||
| companion object { | ||
| fun encode(code: LocalCode): ByteArray = | ||
| "#M3U_LOCAL_CODE,${code.host},${code.port},${code.code},${code.expiration}#" | ||
| .toByteArray(Charsets.UTF_8) | ||
|
|
||
| fun decode(bytes: ByteArray): LocalCode { | ||
| val line = bytes | ||
| .toString(Charset.defaultCharset()) | ||
| .run { | ||
| take(indexOf('#', 1)) | ||
| } | ||
| check(line.startsWith("#M3U_LOCAL_CODE", true)) { | ||
| "Invalidate bytes: $line" | ||
| } | ||
| val elements = line.split(",") | ||
| return LocalCode( | ||
| host = elements[1], | ||
| port = elements[2].toInt(), | ||
| code = elements[3].toInt(), | ||
| expiration = elements[4].toLong() | ||
| ) | ||
| } | ||
| } | ||
| } | ||
|
|
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| object LocalCodeBroadcast : Broadcast { | ||
| override fun send(bytes: ByteArray) { | ||
| val socket = DatagramSocket() | ||
| socket.broadcast = true | ||
| val packet = DatagramPacket(bytes, bytes.size, InetAddress.getByName("0.0.0.0"), PORT) | ||
| try { | ||
| socket.send(packet) | ||
| } catch (ignore: Exception) { | ||
| } | ||
| } | ||
|
|
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| override fun receive(): Flow<ByteArray> = channelFlow { | ||
| val socket = DatagramSocket(PORT, InetAddress.getByName("0.0.0.0")) | ||
| socket.broadcast = true | ||
| awaitClose { | ||
| try { | ||
| socket.close() | ||
| } catch (ignore: Exception) { | ||
| } | ||
| } | ||
| while (true) { | ||
| val bytes = ByteArray(65535) | ||
| val packet = DatagramPacket(bytes, bytes.size) | ||
| try { | ||
| socket.receive(packet) | ||
| send(packet.data) | ||
| } catch (ignore: Exception) { | ||
| } | ||
| } | ||
| } | ||
| .flowOn(Dispatchers.IO) | ||
|
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|
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| private const val PORT = 56981 | ||
| } |
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data/src/main/java/com/m3u/data/net/udp/action/VerifyBroadcast.kt
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