Initial implementation of CronetBidirectionalStream.

components/cronet/android/test/src/org/chromium/net/Http2TestServer.java

Index: components/cronet/android/test/src/org/chromium/net/Http2TestServer.java
diff --git a/components/cronet/android/test/src/org/chromium/net/Http2TestServer.java b/components/cronet/android/test/src/org/chromium/net/Http2TestServer.java
new file mode 100644
index 0000000000000000000000000000000000000000..e37fec14e85250685e56acb6591571115d35c23d
--- /dev/null
+++ b/components/cronet/android/test/src/org/chromium/net/Http2TestServer.java
@@ -0,0 +1,178 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.net;
+
+import android.content.Context;
+import android.os.ConditionVariable;
+
+import org.chromium.base.Log;
+import org.chromium.net.test.util.CertTestUtil;
+
+import java.io.File;
+
+import io.netty.bootstrap.ServerBootstrap;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.ChannelOption;
+import io.netty.channel.EventLoopGroup;
+import io.netty.channel.nio.NioEventLoopGroup;
+import io.netty.channel.socket.SocketChannel;
+import io.netty.channel.socket.nio.NioServerSocketChannel;
+import io.netty.handler.codec.http2.Http2SecurityUtil;
+import io.netty.handler.logging.LogLevel;
+import io.netty.handler.logging.LoggingHandler;
+import io.netty.handler.ssl.ApplicationProtocolConfig;
+import io.netty.handler.ssl.ApplicationProtocolConfig.Protocol;
+import io.netty.handler.ssl.ApplicationProtocolConfig.SelectedListenerFailureBehavior;
+import io.netty.handler.ssl.ApplicationProtocolConfig.SelectorFailureBehavior;
+import io.netty.handler.ssl.ApplicationProtocolNames;
+import io.netty.handler.ssl.ApplicationProtocolNegotiationHandler;
+import io.netty.handler.ssl.OpenSslServerContext;
+import io.netty.handler.ssl.SslContext;
+import io.netty.handler.ssl.SupportedCipherSuiteFilter;
+
+/**
+ * Wrapper class to start a HTTP/2 test server.
+ */
+public final class Http2TestServer {
+    private static final ConditionVariable sBlock = new ConditionVariable();
+    private static final String TAG = "Http2TestServer";
+
+    // Host-based server.
+    static final int PORT = 8443;
+
+    public static boolean startHttp2TestServer(
+            Context context, String certFileName, String keyFileName) throws Exception {
+        (new Thread(

[pauljensen, 2016/01/19 16:03:41]

I don't think the extra parenthesis around "new Thread(blah)" are needed

[mef, 2016/01/20 15:37:41]

Done.

+                 new Http2TestServerRunnable(new File(CertTestUtil.CERTS_DIRECTORY + certFileName),
+                         new File(CertTestUtil.CERTS_DIRECTORY + keyFileName))))
+                .start();
+        sBlock.block();
+        return true;
+    }
+
+    public static boolean shutdownHttp2TestServer() throws Exception {
+        return true;
+    }
+
+    public static String getBaseUrl() {
+        return "https://127.0.0.1:" + PORT + '/';
+    }
+
+    public static String getServerHost() {
+        return "127.0.0.1";
+    }
+
+    public static int getServerPort() {
+        return PORT;
+    }
+
+    static String getEchoAllHeadersUrl() {
+        return getBaseUrl() + "echoallheaders";
+    }
+
+    static String getEchoHeaderUrl(String headerName) {
+        return getBaseUrl() + "echoheader?" + headerName;
+    }
+
+    static String getEchoMethodUrl() {
+        return getBaseUrl() + "echomethod";

[pauljensen, 2016/01/19 16:03:41]

these strings (e.g. "echomethod") seem duplicated between here and the server;
can they be moved into a shared location?

[mef, 2016/01/20 15:37:41]

They sure can. I think it would make sense to unify native test server, quic
test server and http2 test server urls.
Maybe in a separate CL though. WDYT?

[pauljensen, 2016/01/22 03:55:31]

The more unification the better :)  It may be harder to unify the other servers,
e.g. I think the native server gets the URLs from C++ code.  I think we may want
to ensure this CL isn't making things worse though, and at least unify the URLs
in this CL.

+    }
+
+    static String getEchoStreamUrl() {
+        return getBaseUrl() + "echostream";
+    }
+
+    static String getEchoTrailersUrl() {
+        return getBaseUrl() + "echotrailers";
+    }
+
+    private static void onServerStarted() {
+        Log.i(TAG, "Http2 server started.");

[pauljensen, 2016/01/19 16:03:41]

any reason onServerStarted is in a seperate function and not inlined?  The Log
line in here looks duplicated with the log line before the call to
onServerStarted()

[mef, 2016/01/20 15:37:41]

Done.

+        sBlock.open();
+    }
+
+    static class Http2TestServerRunnable implements Runnable {
+        File mCertFile;

[pauljensen, 2016/01/19 16:03:41]

private final?

[mef, 2016/01/20 15:37:41]

Done.

+        File mKeyFile;

[pauljensen, 2016/01/19 16:03:41]

ditto

[mef, 2016/01/20 15:37:41]

Done.

+
+        Http2TestServerRunnable(File certFile, File keyFile) {
+            mCertFile = certFile;
+            mKeyFile = keyFile;
+        }
+
+        public void run() {
+            Log.i(TAG, "Hello from Http2TestServerRunnable!");
+            try {
+                runHttp2TestServer(mCertFile, mKeyFile);
+            } catch (Exception e) {
+                Log.e(TAG, e.toString());
+            }
+        }
+    }
+
+    private static void runHttp2TestServer(File certFile, File keyFile) throws Exception {
+        ApplicationProtocolConfig applicationProtocolConfig =
+                new ApplicationProtocolConfig(Protocol.ALPN, SelectorFailureBehavior.NO_ADVERTISE,
+                        SelectedListenerFailureBehavior.ACCEPT, ApplicationProtocolNames.HTTP_2);
+
+        final SslContext sslCtx =
+                new OpenSslServerContext(certFile, keyFile, null, null, Http2SecurityUtil.CIPHERS,
+                        SupportedCipherSuiteFilter.INSTANCE, applicationProtocolConfig, 0, 0);
+
+        // Configure the server.
+        EventLoopGroup group = new NioEventLoopGroup();
+        try {
+            ServerBootstrap b = new ServerBootstrap();
+            b.option(ChannelOption.SO_BACKLOG, 1024);
+            b.group(group)
+                    .channel(NioServerSocketChannel.class)
+                    .handler(new LoggingHandler(LogLevel.INFO))
+                    .childHandler(new Http2ServerInitializer(sslCtx));
+
+            Channel ch = b.bind(PORT).sync().channel();
+            Log.i(TAG, "Netty HTTP/2 server started on " + getBaseUrl());
+            onServerStarted();
+            ch.closeFuture().sync();
+        } finally {
+            group.shutdownGracefully();
+        }
+        Log.i(TAG, "Stopped Http2TestServerRunnable!");
+    }
+
+    /**
+     * Sets up the Netty pipeline for the test server.
+     */
+    static class Http2ServerInitializer extends ChannelInitializer<SocketChannel> {
+        private final SslContext mSslCtx;
+
+        public Http2ServerInitializer(SslContext sslCtx) {
+            this.mSslCtx = sslCtx;
+        }
+
+        @Override
+        public void initChannel(SocketChannel ch) {
+            ch.pipeline().addLast(mSslCtx.newHandler(ch.alloc()), new Http2NegotiationHandler());
+        }
+    }
+
+    static class Http2NegotiationHandler extends ApplicationProtocolNegotiationHandler {
+        protected Http2NegotiationHandler() {
+            super(ApplicationProtocolNames.HTTP_1_1);
+        }
+
+        @Override
+        protected void configurePipeline(ChannelHandlerContext ctx, String protocol)
+                throws Exception {
+            if (ApplicationProtocolNames.HTTP_2.equals(protocol)) {
+                ctx.pipeline().addLast(new Http2TestHandler.Builder().build());
+                return;
+            }
+
+            throw new IllegalStateException("unknown protocol: " + protocol);
+        }
+    }
+}