KTOR-4834 Fix startup message on Windows

ktor-server/ktor-server-host-common/jvm/src/io/ktor/server/engine/internal/EngineUtilsJvm.kt

@@ -0,0 +1,15 @@
+/*
+ * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+package io.ktor.server.engine.internal
+
+private val OS_NAME = System.getProperty("os.name", "")
+    .lowercase()
+
+internal actual fun escapeHostname(value: String): String {
+    if (!OS_NAME.contains("windows")) return value
+    if (value != "0.0.0.0") return value
+
+    return "127.0.0.1"
+}

ktor-server/ktor-server-host-common/jvmAndNix/src/io/ktor/server/engine/BaseApplicationEngine.kt

@@ -72,8 +72,9 @@ public abstract class BaseApplicationEngine(
         val log = environment.log
         CoroutineScope(environment.application.coroutineContext).launch {
             connectors.await().forEach {
+                val host = escapeHostname(it.host)
                 log.info(
-                    "Responding at ${it.type.name.lowercase()}://${it.host}:${it.port}"
+                    "Responding at ${it.type.name.lowercase()}://$host:${it.port}"
                 )
             }
         }

ktor-server/ktor-server-host-common/jvmAndNix/src/io/ktor/server/engine/internal/EngineUtils.kt

@@ -0,0 +1,7 @@
+/*
+ * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+package io.ktor.server.engine.internal
+
+internal expect fun escapeHostname(value: String): String

ktor-server/ktor-server-host-common/nix/src/io/ktor/server/engine/internal/EngineUtilsNix.kt

@@ -0,0 +1,7 @@
+/*
+ * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+package io.ktor.server.engine.internal
+
+internal actual fun escapeHostname(value: String): String = value