@Override
public int hashCode() {
int result = uuid != null ? uuid.hashCode() : 0;
result = 31 * result + (type != null ? type.hashCode() : 0);
result = 31 * result + (buffer != null ? ByteBufUtil.hashCode(buffer) : 0);
return result;
}
/**
* Decodes the client connection preface string from the input buffer.
*
* @return {@code true} if processing of the client preface string is complete. Since client
* preface strings can only be received by servers, returns true immediately for client
* endpoints.
*/
private boolean readClientPrefaceString(ByteBuf in) throws Http2Exception {
if (clientPrefaceString == null) {
return true;
}
int prefaceRemaining = clientPrefaceString.readableBytes();
int bytesRead = min(in.readableBytes(), prefaceRemaining);
// If the input so far doesn't match the preface, break the connection.
if (bytesRead == 0
|| !ByteBufUtil.equals(
in,
in.readerIndex(),
clientPrefaceString,
clientPrefaceString.readerIndex(),
bytesRead)) {
String receivedBytes =
hexDump(
in, in.readerIndex(), min(in.readableBytes(), clientPrefaceString.readableBytes()));
throw connectionError(
PROTOCOL_ERROR,
"HTTP/2 client preface string missing or corrupt. " + "Hex dump for received bytes: %s",
receivedBytes);
}
in.skipBytes(bytesRead);
clientPrefaceString.skipBytes(bytesRead);
if (!clientPrefaceString.isReadable()) {
// Entire preface has been read.
clientPrefaceString.release();
clientPrefaceString = null;
return true;
}
return false;
}
/**
* Converts the specified Netty {@link ByteBuf} into an {@link HttpData}. Unlike {@link
* #of(byte[])}, this method makes a copy of the {@link ByteBuf}.
*
* @return a new {@link HttpData}. {@link #EMPTY_DATA} if the readable bytes of {@code buf} is 0.
*/
static HttpData of(ByteBuf buf) {
requireNonNull(buf, "buf");
if (!buf.isReadable()) {
return EMPTY_DATA;
}
return of(ByteBufUtil.getBytes(buf));
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
QueueMessage that = (QueueMessage) o;
if (buffer != null ? !ByteBufUtil.equals(buffer, that.buffer) : that.buffer != null)
return false;
if (type != that.type) return false;
if (uuid != null ? !uuid.equals(that.uuid) : that.uuid != null) return false;
return true;
}
@Override
protected void encodeInitialLine(final ByteBuf buf, final HttpMessage message) throws Exception {
if (message instanceof HttpRequest) {
HttpRequest request = (HttpRequest) message;
ByteBufUtil.writeAscii(buf, request.method().asciiName());
buf.writeByte(SP);
buf.writeBytes(request.uri().getBytes(CharsetUtil.UTF_8));
buf.writeByte(SP);
ByteBufUtil.writeAscii(buf, request.protocolVersion().text());
buf.writeBytes(CRLF);
} else if (message instanceof HttpResponse) {
HttpResponse response = (HttpResponse) message;
ByteBufUtil.writeAscii(buf, response.protocolVersion().text());
buf.writeByte(SP);
buf.writeBytes(String.valueOf(response.status().code()).getBytes(CharsetUtil.US_ASCII));
buf.writeByte(SP);
ByteBufUtil.writeAscii(buf, response.status().reasonPhrase());
buf.writeBytes(CRLF);
} else {
throw new UnsupportedMessageTypeException(
"Unsupported type " + StringUtil.simpleClassName(message));
}
}
private void handleWebsocket(
final OutPacketMessage msg, ChannelHandlerContext ctx, ChannelPromise promise)
throws IOException {
while (true) {
Queue<Packet> queue = msg.getClientHead().getPacketsQueue(msg.getTransport());
Packet packet = queue.poll();
if (packet == null) {
promise.setSuccess();
break;
}
final ByteBuf out = encoder.allocateBuffer(ctx.alloc());
encoder.encodePacket(packet, out, ctx.alloc(), true);
WebSocketFrame res = new TextWebSocketFrame(out);
if (log.isTraceEnabled()) {
log.trace(
"Out message: {} sessionId: {}", out.toString(CharsetUtil.UTF_8), msg.getSessionId());
}
if (out.isReadable()) {
ctx.channel().writeAndFlush(res, promise);
} else {
promise.setSuccess();
out.release();
}
for (ByteBuf buf : packet.getAttachments()) {
ByteBuf outBuf = encoder.allocateBuffer(ctx.alloc());
outBuf.writeByte(4);
outBuf.writeBytes(buf);
if (log.isTraceEnabled()) {
log.trace(
"Out attachment: {} sessionId: {}", ByteBufUtil.hexDump(outBuf), msg.getSessionId());
}
ctx.channel().writeAndFlush(new BinaryWebSocketFrame(outBuf));
}
}
}
@Override
public String toString() {
if (refCnt() == 0) {
return "SctpFrame{"
+ "streamIdentifier="
+ streamIdentifier
+ ", protocolIdentifier="
+ protocolIdentifier
+ ", unordered="
+ unordered
+ ", data=(FREED)}";
}
return "SctpFrame{"
+ "streamIdentifier="
+ streamIdentifier
+ ", protocolIdentifier="
+ protocolIdentifier
+ ", unordered="
+ unordered
+ ", data="
+ ByteBufUtil.hexDump(content())
+ '}';
}
/** 此方法会在接收到服务器数据后调用 */
public void channelRead0(ChannelHandlerContext ctx, ByteBuf in) {
System.out.println("Client received: " + ByteBufUtil.hexDump(in.readBytes(in.readableBytes())));
}
@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out)
throws SSLException {
final int startOffset = in.readerIndex();
final int endOffset = in.writerIndex();
int offset = startOffset;
int totalLength = 0;
// If we calculated the length of the current SSL record before, use that information.
if (packetLength > 0) {
if (endOffset - startOffset < packetLength) {
return;
} else {
offset += packetLength;
totalLength = packetLength;
packetLength = 0;
}
}
boolean nonSslRecord = false;
while (totalLength < OpenSslEngine.MAX_ENCRYPTED_PACKET_LENGTH) {
final int readableBytes = endOffset - offset;
if (readableBytes < 5) {
break;
}
final int packetLength = getEncryptedPacketLength(in, offset);
if (packetLength == -1) {
nonSslRecord = true;
break;
}
assert packetLength > 0;
if (packetLength > readableBytes) {
// wait until the whole packet can be read
this.packetLength = packetLength;
break;
}
int newTotalLength = totalLength + packetLength;
if (newTotalLength > OpenSslEngine.MAX_ENCRYPTED_PACKET_LENGTH) {
// Don't read too much.
break;
}
// We have a whole packet.
// Increment the offset to handle the next packet.
offset += packetLength;
totalLength = newTotalLength;
}
if (totalLength > 0) {
boolean decoded = false;
// The buffer contains one or more full SSL records.
// Slice out the whole packet so unwrap will only be called with complete packets.
// Also directly reset the packetLength. This is needed as unwrap(..) may trigger
// decode(...) again via:
// 1) unwrap(..) is called
// 2) wrap(...) is called from within unwrap(...)
// 3) wrap(...) calls unwrapLater(...)
// 4) unwrapLater(...) calls decode(...)
//
// See https://github.com/netty/netty/issues/1534
in.skipBytes(totalLength);
// If SSLEngine expects a heap buffer for unwrapping, do the conversion.
if (in.isDirect() && wantsInboundHeapBuffer) {
ByteBuf copy = ctx.alloc().heapBuffer(totalLength);
try {
copy.writeBytes(in, startOffset, totalLength);
decoded = unwrap(ctx, copy, 0, totalLength);
} finally {
copy.release();
}
} else {
decoded = unwrap(ctx, in, startOffset, totalLength);
}
if (!firedChannelRead) {
// Check first if firedChannelRead is not set yet as it may have been set in a
// previous decode(...) call.
firedChannelRead = decoded;
}
}
if (nonSslRecord) {
// Not an SSL/TLS packet
NotSslRecordException e =
new NotSslRecordException("not an SSL/TLS record: " + ByteBufUtil.hexDump(in));
in.skipBytes(in.readableBytes());
ctx.fireExceptionCaught(e);
setHandshakeFailure(ctx, e);
}
}
@Override
public void inboundBufferUpdated(final ChannelHandlerContext ctx) throws Exception {
final ByteBuf in = ctx.inboundByteBuffer();
if (in.readableBytes() < 5) {
return;
}
int packetLength = getEncryptedPacketLength(in);
if (packetLength == -1) {
// Bad data - discard the buffer and raise an exception.
NotSslRecordException e =
new NotSslRecordException("not an SSL/TLS record: " + ByteBufUtil.hexDump(in));
in.skipBytes(in.readableBytes());
ctx.fireExceptionCaught(e);
setHandshakeFailure(e);
return;
}
assert packetLength > 0;
final ByteBuf out = ctx.nextInboundByteBuffer();
out.discardReadBytes();
boolean wrapLater = false;
int bytesProduced = 0;
try {
loop:
for (; ; ) {
SSLEngineResult result = unwrap(engine, in, out);
bytesProduced += result.bytesProduced();
switch (result.getStatus()) {
case CLOSED:
// notify about the CLOSED state of the SSLEngine. See #137
sslCloseFuture.setClosed();
break;
case BUFFER_UNDERFLOW:
break loop;
}
switch (result.getHandshakeStatus()) {
case NEED_UNWRAP:
break;
case NEED_WRAP:
wrapLater = true;
break;
case NEED_TASK:
runDelegatedTasks();
break;
case FINISHED:
setHandshakeSuccess();
wrapLater = true;
continue;
case NOT_HANDSHAKING:
break;
default:
throw new IllegalStateException(
"Unknown handshake status: " + result.getHandshakeStatus());
}
if (result.bytesConsumed() == 0 && result.bytesProduced() == 0) {
break;
}
}
if (wrapLater) {
flush(ctx, ctx.newFuture());
}
} catch (SSLException e) {
setHandshakeFailure(e);
throw e;
} finally {
if (bytesProduced > 0) {
in.discardReadBytes();
ctx.fireInboundBufferUpdated();
}
}
}
@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out)
throws SSLException {
// Keeps the list of the length of every SSL record in the input buffer.
int[] recordLengths = null;
int nRecords = 0;
final int startOffset = in.readerIndex();
final int endOffset = in.writerIndex();
int offset = startOffset;
// If we calculated the length of the current SSL record before, use that information.
if (packetLength > 0) {
if (endOffset - startOffset < packetLength) {
return;
} else {
recordLengths = new int[4];
recordLengths[0] = packetLength;
nRecords = 1;
offset += packetLength;
packetLength = 0;
}
}
boolean nonSslRecord = false;
for (; ; ) {
final int readableBytes = endOffset - offset;
if (readableBytes < 5) {
break;
}
final int packetLength = getEncryptedPacketLength(in, offset);
if (packetLength == -1) {
nonSslRecord = true;
break;
}
assert packetLength > 0;
if (packetLength > readableBytes) {
// wait until the whole packet can be read
this.packetLength = packetLength;
break;
}
// We have a whole packet.
// Remember the length of the current packet.
if (recordLengths == null) {
recordLengths = new int[4];
}
if (nRecords == recordLengths.length) {
recordLengths = Arrays.copyOf(recordLengths, recordLengths.length << 1);
}
recordLengths[nRecords++] = packetLength;
// Increment the offset to handle the next packet.
offset += packetLength;
}
final int totalLength = offset - startOffset;
if (totalLength > 0) {
// The buffer contains one or more full SSL records.
// Slice out the whole packet so unwrap will only be called with complete packets.
// Also directly reset the packetLength. This is needed as unwrap(..) may trigger
// decode(...) again via:
// 1) unwrap(..) is called
// 2) wrap(...) is called from within unwrap(...)
// 3) wrap(...) calls unwrapLater(...)
// 4) unwrapLater(...) calls decode(...)
//
// See https://github.com/netty/netty/issues/1534
in.skipBytes(totalLength);
ByteBuffer buffer = in.nioBuffer(startOffset, totalLength);
unwrapMultiple(ctx, buffer, totalLength, recordLengths, nRecords, out);
}
if (nonSslRecord) {
// Not an SSL/TLS packet
NotSslRecordException e =
new NotSslRecordException("not an SSL/TLS record: " + ByteBufUtil.hexDump(in));
in.skipBytes(in.readableBytes());
ctx.fireExceptionCaught(e);
setHandshakeFailure(e);
}
}
@Test
public void stressTest() throws Exception {
final Http2Headers headers = dummyHeaders();
final String pingMsg = "12345678";
int length = 10;
final ByteBuf data = randomBytes(length);
final String dataAsHex = ByteBufUtil.hexDump(data);
final ByteBuf pingData = Unpooled.copiedBuffer(pingMsg, UTF_8);
final int numStreams = 2000;
// Collect all the ping buffers as we receive them at the server.
final String[] receivedPings = new String[numStreams];
doAnswer(
new Answer<Void>() {
int nextIndex;
@Override
public Void answer(InvocationOnMock in) throws Throwable {
receivedPings[nextIndex++] = ((ByteBuf) in.getArguments()[1]).toString(UTF_8);
return null;
}
})
.when(serverListener)
.onPingRead(any(ChannelHandlerContext.class), any(ByteBuf.class));
// Collect all the data buffers as we receive them at the server.
final StringBuilder[] receivedData = new StringBuilder[numStreams];
doAnswer(
new Answer<Integer>() {
@Override
public Integer answer(InvocationOnMock in) throws Throwable {
int streamId = (Integer) in.getArguments()[1];
ByteBuf buf = (ByteBuf) in.getArguments()[2];
int padding = (Integer) in.getArguments()[3];
int processedBytes = buf.readableBytes() + padding;
int streamIndex = (streamId - 3) / 2;
StringBuilder builder = receivedData[streamIndex];
if (builder == null) {
builder = new StringBuilder(dataAsHex.length());
receivedData[streamIndex] = builder;
}
builder.append(ByteBufUtil.hexDump(buf));
return processedBytes;
}
})
.when(serverListener)
.onDataRead(
any(ChannelHandlerContext.class), anyInt(), any(ByteBuf.class), anyInt(), anyBoolean());
try {
bootstrapEnv(numStreams * length, 1, numStreams * 4, numStreams);
runInChannel(
clientChannel,
new Http2Runnable() {
@Override
public void run() {
int upperLimit = 3 + 2 * numStreams;
for (int streamId = 3; streamId < upperLimit; streamId += 2) {
// Send a bunch of data on each stream.
http2Client
.encoder()
.writeHeaders(
ctx(), streamId, headers, 0, (short) 16, false, 0, false, newPromise());
http2Client
.encoder()
.writePing(ctx(), false, pingData.slice().retain(), newPromise());
http2Client
.encoder()
.writeData(ctx(), streamId, data.slice().retain(), 0, false, newPromise());
// Write trailers.
http2Client
.encoder()
.writeHeaders(
ctx(), streamId, headers, 0, (short) 16, false, 0, true, newPromise());
}
}
});
// Wait for all frames to be received.
assertTrue(serverSettingsAckLatch.await(60, SECONDS));
assertTrue(trailersLatch.await(60, SECONDS));
verify(serverListener, times(numStreams))
.onHeadersRead(
any(ChannelHandlerContext.class),
anyInt(),
eq(headers),
eq(0),
eq((short) 16),
eq(false),
eq(0),
eq(false));
verify(serverListener, times(numStreams))
.onHeadersRead(
any(ChannelHandlerContext.class),
anyInt(),
eq(headers),
eq(0),
eq((short) 16),
eq(false),
eq(0),
eq(true));
verify(serverListener, times(numStreams))
.onPingRead(any(ChannelHandlerContext.class), any(ByteBuf.class));
verify(serverListener, never())
.onDataRead(
any(ChannelHandlerContext.class), anyInt(), any(ByteBuf.class), eq(0), eq(true));
for (StringBuilder builder : receivedData) {
assertEquals(dataAsHex, builder.toString());
}
for (String receivedPing : receivedPings) {
assertEquals(pingMsg, receivedPing);
}
} finally {
data.release();
pingData.release();
}
}