diff --git a/src/ktorSocketTest/kotlin/net/sergeych/kiloparsec/adapter/InternetTest.kt b/src/ktorSocketTest/kotlin/net/sergeych/kiloparsec/adapter/InternetTest.kt
index a25bdcd..0fc930f 100644
--- a/src/ktorSocketTest/kotlin/net/sergeych/kiloparsec/adapter/InternetTest.kt
+++ b/src/ktorSocketTest/kotlin/net/sergeych/kiloparsec/adapter/InternetTest.kt
@@ -154,19 +154,28 @@ class InternetrTest {
             }
         }
         val uServer = UdpServer(port)
+
         KiloServer(cli, uServer.transportFlow) {
             Session("unknown")
         }
 
+        // second server
+        KiloServer(cli,acceptUdpDevice(uServer.port+1)) { Session("unknown2") }
+
+
         val client = KiloClient<Unit>() {
             addErrors(cli)
             connect { connectUdpDevice("localhost:$port") }
         }
+        val client2 = KiloClient<Unit>() { connect { connectUdpDevice("localhost:${port+1}") } }
 
         assertEquals("start", client.call(cmdLoad))
+        assertEquals("start", client2.call(cmdLoad))
 
         client.call(cmdSave, "foobar")
+        client2.call(cmdSave, "buzz")
         assertEquals("foobar", client.call(cmdLoad))
+        assertEquals("buzz", client2.call(cmdLoad))
 
         val res = kotlin.runCatching { client.call(cmdException) }
         assertIs<TestException>(res.exceptionOrNull())