Convert SAM (#6828)

mockwebserver/src/main/kotlin/mockwebserver3/internal/duplex/DuplexResponseBody.kt

@@ -19,7 +19,7 @@ import java.io.IOException
 import okhttp3.internal.http2.Http2Stream
 import mockwebserver3.RecordedRequest
 
-interface DuplexResponseBody {
+fun interface DuplexResponseBody {
   @Throws(IOException::class)
   fun onRequest(request: RecordedRequest, http2Stream: Http2Stream)
 }

okhttp-testing-support/src/main/kotlin/okhttp3/OkHttpClientTestRule.kt

@@ -253,11 +253,9 @@ class OkHttpClientTestRule : BeforeEachCallback, AfterEachCallback {
      * A network that resolves only one IP address per host. Use this when testing route selection
      * fallbacks to prevent the host machine's various IP addresses from interfering.
      */
-    private val SINGLE_INET_ADDRESS_DNS = object : Dns {
-      override fun lookup(hostname: String): List<InetAddress> {
+    private val SINGLE_INET_ADDRESS_DNS = Dns { hostname ->
       val addresses = Dns.SYSTEM.lookup(hostname)
-        return listOf(addresses[0])
-      }
+      listOf(addresses[0])
     }
 
     private operator fun Throwable?.plus(throwable: Throwable): Throwable {

okhttp/src/main/kotlin/okhttp3/Dns.kt

@@ -27,7 +27,7 @@ import okhttp3.Dns.Companion.SYSTEM
  *
  * Implementations of this interface must be safe for concurrent use.
  */
-interface Dns {
+fun interface Dns {
   /**
    * Returns the IP addresses of `hostname`, in the order they will be attempted by OkHttp. If a
    * connection to an address fails, OkHttp will retry the connection with the next address until

okhttp/src/main/kotlin/okhttp3/internal/tls/TrustRootIndex.kt

@@ -17,7 +17,7 @@ package okhttp3.internal.tls
 
 import java.security.cert.X509Certificate
 
-interface TrustRootIndex {
+fun interface TrustRootIndex {
   /** Returns the trusted CA certificate that signed [cert]. */
   fun findByIssuerAndSignature(cert: X509Certificate): X509Certificate?
 }

okhttp/src/test/java/okhttp3/KotlinSourceModernTest.kt

@@ -338,9 +338,7 @@ class KotlinSourceModernTest {
 
   @Test
   fun dns() {
-    var dns: Dns = object : Dns {
-      override fun lookup(hostname: String): List<InetAddress> = TODO()
-    }
+    var dns: Dns = Dns { TODO() }
 
     val system: Dns = Dns.SYSTEM
   }

okhttp/src/test/java/okhttp3/SocketChannelTest.kt

@@ -90,11 +90,7 @@ class SocketChannelTest(
     }
 
     val client = clientTestRule.newClientBuilder()
-      .dns(object : Dns {
-        override fun lookup(hostname: String): List<InetAddress> {
-          return listOf(InetAddress.getByName("localhost"))
-        }
-      })
+      .dns { listOf(InetAddress.getByName("localhost")) }
       .callTimeout(4, SECONDS)
       .writeTimeout(2, SECONDS)
       .readTimeout(2, SECONDS)