okhttp3.internal.platform.Jdk9Platform.kt Maven / Gradle / Ivy
/*
* Copyright (C) 2016 Square, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package okhttp3.internal.platform
import javax.net.ssl.SSLSocket
import javax.net.ssl.SSLSocketFactory
import javax.net.ssl.X509TrustManager
import okhttp3.Protocol
import okhttp3.internal.SuppressSignatureCheck
/** OpenJDK 9+. */
open class Jdk9Platform : Platform() {
@SuppressSignatureCheck
override fun configureTlsExtensions(
sslSocket: SSLSocket,
hostname: String?,
protocols: List<@JvmSuppressWildcards Protocol>
) {
val sslParameters = sslSocket.sslParameters
val names = alpnProtocolNames(protocols)
sslParameters.applicationProtocols = names.toTypedArray()
sslSocket.sslParameters = sslParameters
}
@SuppressSignatureCheck
override fun getSelectedProtocol(sslSocket: SSLSocket): String? {
try {
// SSLSocket.getApplicationProtocol returns "" if application protocols values will not
// be used. Observed if you didn't specify SSLParameters.setApplicationProtocols
return when (val protocol = sslSocket.applicationProtocol) {
null, "" -> null
else -> protocol
}
} catch (e: UnsupportedOperationException) {
// https://docs.oracle.com/javase/9/docs/api/javax/net/ssl/SSLSocket.html#getApplicationProtocol--
return null
}
}
override fun trustManager(sslSocketFactory: SSLSocketFactory): X509TrustManager? {
// Not supported due to access checks on JDK 9+:
// java.lang.reflect.InaccessibleObjectException: Unable to make member of class
// sun.security.ssl.SSLSocketFactoryImpl accessible: module java.base does not export
// sun.security.ssl to unnamed module @xxx
throw UnsupportedOperationException(
"clientBuilder.sslSocketFactory(SSLSocketFactory) not supported on JDK 9+")
}
companion object {
val isAvailable: Boolean
init {
val jdkVersion: String? = System.getProperty("java.specification.version")
val majorVersion = jdkVersion?.toIntOrNull()
isAvailable = if (majorVersion != null) {
majorVersion >= 9
} else {
try {
// also present on JDK8 after build 252.
SSLSocket::class.java.getMethod("getApplicationProtocol")
true
} catch (nsme: NoSuchMethodException) {
false
}
}
}
fun buildIfSupported(): Jdk9Platform? = if (isAvailable) Jdk9Platform() else null
}
}