diff --git a/src/Client.kt b/src/Client.kt
index 8167e47..b6c0f84 100644
--- a/src/Client.kt
+++ b/src/Client.kt
@@ -8,28 +8,16 @@ import java.io.ObjectOutputStream
 import java.io.Serializable
 import java.net.InetSocketAddress
 import java.net.Socket
-import javax.sound.sampled.AudioFormat
 import javax.sound.sampled.AudioSystem
 import kotlin.system.measureTimeMillis
 
-val SERVER_PORT = 7890
+val SERVER_PORT = 7860
 val ECHO_CANCELLATION = true
 val PACKET_SAMPLES = 2880
 val SAMPLE_RATE = 48000
 val CHANNELS = 1
 val BUFFER_SIZE = PACKET_SAMPLES * CHANNELS
-
-val bufferOut = ByteArray(BUFFER_SIZE * 2)
-val bufferIn = ByteArray(BUFFER_SIZE * 2)
-val format = AudioConvert.getAudioFormat(SAMPLE_RATE, CHANNELS)
-
-val decoder = OpusDecoder(SAMPLE_RATE, CHANNELS)
-val encoder = OpusEncoder(SAMPLE_RATE, CHANNELS, OpusApplication.OPUS_APPLICATION_AUDIO).also {
-    it.bitrate = 96000
-    it.forceMode = OpusMode.MODE_CELT_ONLY
-    it.signalType = OpusSignal.OPUS_SIGNAL_MUSIC
-    it.complexity = 0
-}
+val AUDIO_FORMAT = AudioConvert.getAudioFormat(SAMPLE_RATE, CHANNELS)
 
 object Client {
     @JvmStatic
@@ -47,22 +35,32 @@ fun mainClient() = runBlocking {
     val socket = Socket()
 
     val t = measureTimeMillis {
-//        socket.connect(InetSocketAddress("zedo.top", SERVER_PORT))
-        socket.connect(InetSocketAddress("127.0.0.1", SERVER_PORT))
+        socket.connect(InetSocketAddress("zedo.top", SERVER_PORT))
+//        socket.connect(InetSocketAddress("127.0.0.1", SERVER_PORT))
     }
     println("connect time $t")
 
     val out = ObjectOutputStream(socket.getOutputStream())
     val inp = ObjectInputStream(socket.getInputStream())
 
-    val targetDataLine = AudioSystem.getTargetDataLine(format)
-    targetDataLine.open(format, bufferIn.size)
+    val bufferOut = ByteArray(BUFFER_SIZE * 2)
+    val targetDataLine = AudioSystem.getTargetDataLine(AUDIO_FORMAT)
+    targetDataLine.open(AUDIO_FORMAT, bufferOut.size)
     targetDataLine.start()
 
-    val sourceDataLine = AudioSystem.getSourceDataLine(format)
-    sourceDataLine.open(format, bufferIn.size)
+    val bufferIn = ByteArray(BUFFER_SIZE * 2)
+    val sourceDataLine = AudioSystem.getSourceDataLine(AUDIO_FORMAT)
+    sourceDataLine.open(AUDIO_FORMAT, bufferIn.size)
     sourceDataLine.start()
 
+    val decoder = OpusDecoder(SAMPLE_RATE, CHANNELS)
+    val encoder = OpusEncoder(SAMPLE_RATE, CHANNELS, OpusApplication.OPUS_APPLICATION_AUDIO).also {
+        it.bitrate = 96000
+        it.forceMode = OpusMode.MODE_CELT_ONLY
+        it.signalType = OpusSignal.OPUS_SIGNAL_MUSIC
+        it.complexity = 0
+    }
+
     launch(Dispatchers.IO) {
         while (true) {
             targetDataLine.read(bufferOut, 0, bufferOut.size)