Examples with DefaultHttp2ResetFrame io.netty.handler.codec.http2.DefaultHttp2ResetFrame used on opensource projects

Example 1 with DefaultHttp2ResetFrame

use of io.netty.handler.codec.http2.DefaultHttp2ResetFrame in project zuul by Netflix.

the class Http2ContentLengthEnforcingHandler method channelRead.

/**
 * This checks that the content length does what it says, preventing a client from causing Zuul to misinterpret the
 * request.  Because this class is meant to work in an HTTP/2 setting, the content length and transfer encoding
 * checks are more semantics.  In particular, this checks:
 * <ul>
 *     <li>No duplicate Content length</li>
 *     <li>Content Length (if present) must always be greater than or equal to how much content has been seen</li>
 *     <li>Content Length (if present) must always be equal to how much content has been seen by the end</li>
 *     <li>Content Length cannot be present along with chunked transfer encoding.</li>
 * </ul>
 */
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    if (msg instanceof HttpRequest) {
        HttpRequest req = (HttpRequest) msg;
        List<String> lengthHeaders = req.headers().getAll(HttpHeaderNames.CONTENT_LENGTH);
        if (lengthHeaders.size() > 1) {
            ctx.writeAndFlush(new DefaultHttp2ResetFrame(Http2Error.PROTOCOL_ERROR));
            return;
        } else if (lengthHeaders.size() == 1) {
            expectedContentLength = Long.parseLong(lengthHeaders.get(0));
            if (expectedContentLength < 0) {
                // TODO(carl-mastrangelo): this is not right, but meh.  Fix this to return a proper 400.
                ctx.writeAndFlush(new DefaultHttp2ResetFrame(Http2Error.PROTOCOL_ERROR));
                return;
            }
        }
        if (hasContentLength() && HttpUtil.isTransferEncodingChunked(req)) {
            // TODO(carl-mastrangelo): this is not right, but meh.  Fix this to return a proper 400.
            ctx.writeAndFlush(new DefaultHttp2ResetFrame(Http2Error.PROTOCOL_ERROR));
            return;
        }
    }
    if (msg instanceof HttpContent) {
        ByteBuf content = ((HttpContent) msg).content();
        incrementSeenContent(content.readableBytes());
        if (hasContentLength() && seenContentLength > expectedContentLength) {
            // TODO(carl-mastrangelo): this is not right, but meh.  Fix this to return a proper 400.
            ctx.writeAndFlush(new DefaultHttp2ResetFrame(Http2Error.PROTOCOL_ERROR));
            return;
        }
    }
    if (msg instanceof LastHttpContent) {
        if (hasContentLength() && seenContentLength != expectedContentLength) {
            // TODO(carl-mastrangelo): this is not right, but meh.  Fix this to return a proper 400.
            ctx.writeAndFlush(new DefaultHttp2ResetFrame(Http2Error.PROTOCOL_ERROR));
            return;
        }
    }
    super.channelRead(ctx, msg);
}

Example 2 with DefaultHttp2ResetFrame

use of io.netty.handler.codec.http2.DefaultHttp2ResetFrame in project zuul by Netflix.

the class Http2StreamErrorHandler method exceptionCaught.

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
    if (cause instanceof StreamException) {
        StreamException streamEx = (StreamException) cause;
        ctx.writeAndFlush(new DefaultHttp2ResetFrame(streamEx.error()));
    } else if (cause instanceof DecoderException) {
        ctx.writeAndFlush(new DefaultHttp2ResetFrame(Http2Error.PROTOCOL_ERROR));
    } else {
        super.exceptionCaught(ctx, cause);
    }
}