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/*
* Copyright (C) 2015 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 com.squareup.okhttp.internal;
import com.squareup.okhttp.ConnectionSpec;
import com.squareup.okhttp.TlsVersion;
import java.io.IOException;
import java.security.cert.CertificateException;
import java.util.Arrays;
import java.util.LinkedHashSet;
import java.util.Set;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLHandshakeException;
import javax.net.ssl.SSLSocket;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
public class ConnectionSpecSelectorTest {
static {
Internal.initializeInstanceForTests();
}
public static final SSLHandshakeException RETRYABLE_EXCEPTION = new SSLHandshakeException(
"Simulated handshake exception");
private SSLContext sslContext = SslContextBuilder.localhost();
@Test
public void nonRetryableIOException() throws Exception {
ConnectionSpecSelector connectionSpecSelector =
createConnectionSpecSelector(ConnectionSpec.MODERN_TLS, ConnectionSpec.COMPATIBLE_TLS);
SSLSocket socket = createSocketWithEnabledProtocols(TlsVersion.TLS_1_1, TlsVersion.TLS_1_0);
connectionSpecSelector.configureSecureSocket(socket);
boolean retry = connectionSpecSelector.connectionFailed(
new IOException("Non-handshake exception"));
assertFalse(retry);
socket.close();
}
@Test
public void nonRetryableSSLHandshakeException() throws Exception {
ConnectionSpecSelector connectionSpecSelector =
createConnectionSpecSelector(ConnectionSpec.MODERN_TLS, ConnectionSpec.COMPATIBLE_TLS);
SSLSocket socket = createSocketWithEnabledProtocols(TlsVersion.TLS_1_1, TlsVersion.TLS_1_0);
connectionSpecSelector.configureSecureSocket(socket);
SSLHandshakeException trustIssueException =
new SSLHandshakeException("Certificate handshake exception");
trustIssueException.initCause(new CertificateException());
boolean retry = connectionSpecSelector.connectionFailed(trustIssueException);
assertFalse(retry);
socket.close();
}
@Test
public void retryableSSLHandshakeException() throws Exception {
ConnectionSpecSelector connectionSpecSelector =
createConnectionSpecSelector(ConnectionSpec.MODERN_TLS, ConnectionSpec.COMPATIBLE_TLS);
SSLSocket socket = createSocketWithEnabledProtocols(TlsVersion.TLS_1_1, TlsVersion.TLS_1_0);
connectionSpecSelector.configureSecureSocket(socket);
boolean retry = connectionSpecSelector.connectionFailed(RETRYABLE_EXCEPTION);
assertTrue(retry);
socket.close();
}
@Test
public void someFallbacksSupported() throws Exception {
ConnectionSpec sslV3 =
new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
.tlsVersions(TlsVersion.SSL_3_0)
.build();
ConnectionSpecSelector connectionSpecSelector = createConnectionSpecSelector(
ConnectionSpec.MODERN_TLS, ConnectionSpec.COMPATIBLE_TLS, sslV3);
TlsVersion[] enabledSocketTlsVersions = { TlsVersion.TLS_1_1, TlsVersion.TLS_1_0 };
SSLSocket socket = createSocketWithEnabledProtocols(enabledSocketTlsVersions);
// MODERN_TLS is used here.
connectionSpecSelector.configureSecureSocket(socket);
assertEnabledProtocols(socket, TlsVersion.TLS_1_1, TlsVersion.TLS_1_0);
boolean retry = connectionSpecSelector.connectionFailed(RETRYABLE_EXCEPTION);
assertTrue(retry);
socket.close();
// COMPATIBLE_TLS is used here.
socket = createSocketWithEnabledProtocols(enabledSocketTlsVersions);
connectionSpecSelector.configureSecureSocket(socket);
assertEnabledProtocols(socket, TlsVersion.TLS_1_0);
retry = connectionSpecSelector.connectionFailed(RETRYABLE_EXCEPTION);
assertFalse(retry);
socket.close();
// sslV3 is not used because SSLv3 is not enabled on the socket.
}
private static ConnectionSpecSelector createConnectionSpecSelector(
ConnectionSpec... connectionSpecs) {
return new ConnectionSpecSelector(Arrays.asList(connectionSpecs));
}
private SSLSocket createSocketWithEnabledProtocols(TlsVersion... tlsVersions) throws IOException {
SSLSocket socket = (SSLSocket) sslContext.getSocketFactory().createSocket();
socket.setEnabledProtocols(javaNames(tlsVersions));
return socket;
}
private static void assertEnabledProtocols(SSLSocket socket, TlsVersion... required) {
Set<String> actual = new LinkedHashSet<>(Arrays.asList(socket.getEnabledProtocols()));
Set<String> expected = new LinkedHashSet<>(Arrays.asList(javaNames(required)));
assertEquals(expected, actual);
}
private static String[] javaNames(TlsVersion... tlsVersions) {
String[] protocols = new String[tlsVersions.length];
for (int i = 0; i < tlsVersions.length; i++) {
protocols[i] = tlsVersions[i].javaName();
}
return protocols;
}
}
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