Support anonymous connect to ws server

bl-client/src/commonMain/kotlin/cn/rtast/bldm/client/bldm.kt

@@ -7,16 +7,15 @@
 package cn.rtast.bldm.client
 
 import cn.rtast.bldm.client.util.fromJson
+import cn.rtast.bldm.client.util.parseBuvidAndUid
 import cn.rtast.bldm.client.util.sendPacket
 import cn.rtast.bldm.codec.event.DanmuEventDispatcher
 import cn.rtast.bldm.codec.protocol.codec.PacketDecoder
 import cn.rtast.bldm.codec.protocol.codec.PacketEncoder
-import cn.rtast.bldm.codec.util.parseBuvidAndUid
 import cn.rtast.bldm.codec.util.signWbi
-import cn.rtast.bldm.dto.BldmConstant
-import cn.rtast.bldm.dto.DMServerConf
-import cn.rtast.bldm.dto.RealRoomId
-import cn.rtast.bldm.dto.UserNavData
+import cn.rtast.bldm.dto.*
+import io.ktor.client.*
+import io.ktor.client.plugins.*
 import io.ktor.client.plugins.websocket.*
 import io.ktor.client.request.*
 import io.ktor.client.statement.*
@@ -31,6 +30,16 @@ public class BldmClient internal constructor(
 ) : DanmuEventDispatcher(), AutoCloseable {
     private companion object {
         private val HEARTBEAT_INTERVAL = 30.seconds
+        private const val USER_AGENT =
+            "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.36"
+    }
+
+    private val httpClient = HttpClient {
+        install(WebSockets)
+
+        defaultRequest {
+            header(HttpHeaders.UserAgent, USER_AGENT)
+        }
     }
 
     private val packetEncoder = PacketEncoder()
@@ -39,8 +48,12 @@ public class BldmClient internal constructor(
     private var connectionJob: Job? = null
     private var session: DefaultClientWebSocketSession? = null
 
+    private suspend fun getBuvidFromApi(): String =
+        httpClient.get(BldmConstant.BUVID_URL)
+            .bodyAsText().fromJson<Buvid>()
+            .data.buvid
+
     private suspend fun internalConnect() {
-        val parsedCookie = parseBuvidAndUid(cookie ?: "")
         val realRoomId = httpClient.get(BldmConstant.REAL_ROOM_ID_URL + "?id=$roomId")
             .bodyAsText().fromJson<RealRoomId>()
         val navData = httpClient.get(BldmConstant.USER_NAV_URL)
@@ -49,14 +62,13 @@ public class BldmClient internal constructor(
         val serverConf = httpClient.get(BldmConstant.DM_SERVER_CONF_URL + "?$wbi") {
             cookie?.let { header(HttpHeaders.Cookie, it) }
         }.bodyAsText().fromJson<DMServerConf>().data
-
+        val parsedCookie = parseBuvidAndUid(cookie ?: "")
+        val buvid = if (cookie == null) getBuvidFromApi() else parsedCookie.first!!
+        val uid = if (cookie == null) 0 else parsedCookie.second!!
         httpClient.webSocket(serverConf.hostList.first().tlsWsAddress) {
             session = this
             val authPacket = packetEncoder.authPacket(
-                parsedCookie.second ?: 0,
-                realRoomId.data.roomId,
-                parsedCookie.first ?: "",
-                serverConf.token
+                uid, realRoomId.data.roomId, buvid, serverConf.token
             )
             sendPacket(authPacket)
             val heartbeatJob = launch {

bl-client/src/commonMain/kotlin/cn/rtast/bldm/client/constant.kt

@@ -1,25 +0,0 @@
-/*
- * Copyright © 2026 RTAkland
- * Author: RTAkland
- * Date: 2026/8/30
- */
-
-
-package cn.rtast.bldm.client
-
-import io.ktor.client.*
-import io.ktor.client.plugins.defaultRequest
-import io.ktor.client.plugins.websocket.*
-import io.ktor.client.request.header
-import io.ktor.http.HttpHeaders
-
-internal val httpClient = HttpClient {
-    install(WebSockets)
-
-    defaultRequest {
-        header(HttpHeaders.UserAgent, USER_AGENT)
-    }
-}
-
-internal const val USER_AGENT =
-    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.36"

bl-client/src/commonMain/kotlin/cn/rtast/bldm/client/util/_cookie_parser.kt

@@ -0,0 +1,29 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/8/30
+ */
+
+
+package cn.rtast.bldm.client.util
+
+/**
+ * get buvid and uid from a cookie
+ * first -> buvid
+ * second -> uid
+ */
+public fun parseBuvidAndUid(cookie: String): Pair<String?, Long?> {
+    if (cookie.isBlank()) return Pair(null, null)
+    var buvid: String? = null
+    var uid: Long? = null
+    cookie.split(';').forEach { entry ->
+        val parts = entry.split('=', limit = 2)
+        if (parts.size == 2) {
+            when (parts[0].trim()) {
+                "buvid3" -> buvid = parts[1].trim()
+                "DedeUserID" -> uid = parts[1].trim().toLongOrNull()
+            }
+        }
+    }
+    return buvid to uid
+}

bl-client/src/commonTest/kotlin/test/TestClient.kt

@@ -9,14 +9,12 @@ package test
 
 import cn.rtast.bldm.client.BLDMClient
 import cn.rtast.bldm.codec.event.DanmuEvent
-import kotlinx.coroutines.delay
 import kotlinx.coroutines.test.runTest
 import kotlinx.io.buffered
 import kotlinx.io.files.Path
 import kotlinx.io.files.SystemFileSystem
 import kotlinx.io.readString
 import kotlin.test.Test
-import kotlin.time.Duration.Companion.seconds
 
 class TestClient {
 
@@ -25,7 +23,7 @@ class TestClient {
 
     @Test
     fun `test bldm client`() = runTest {
-        val client = BLDMClient(7777, cookie)
+        val client = BLDMClient(55, null)
         client.on<DanmuEvent.HeartbeatEvent> { println("Heartbeat") }
         client.on<DanmuEvent.AuthReplyEvent> { println("AuthReply") }
         client.on<DanmuEvent.MessageEvent> { println(it.content) }