Http2ClientFrameInitializer Class — netty Architecture

Source Code

example/src/main/java/io/netty/example/http2/helloworld/frame/client/Http2ClientFrameInitializer.java lines 30–57

public final class Http2ClientFrameInitializer extends ChannelInitializer<Channel> {

    private final SslContext sslCtx;

    public Http2ClientFrameInitializer(SslContext sslCtx) {
        this.sslCtx = sslCtx;
    }

    @Override
    protected void initChannel(Channel ch) throws Exception {
        // ensure that our 'trust all' SSL handler is the first in the pipeline if SSL is enabled.
        if (sslCtx != null) {
            ch.pipeline().addFirst(sslCtx.newHandler(ch.alloc()));
        }

        final Http2FrameCodec http2FrameCodec = Http2FrameCodecBuilder.forClient()
            .initialSettings(Http2Settings.defaultSettings()) // this is the default, but shows it can be changed.
            .build();
        ch.pipeline().addLast(http2FrameCodec);
        ch.pipeline().addLast(new Http2MultiplexHandler(new SimpleChannelInboundHandler() {
            @Override
            protected void channelRead0(ChannelHandlerContext ctx, Object msg) {
                // NOOP (this is the handler for 'inbound' streams, which is not relevant in this example)
            }
        }));
    }

}