private void writePath(final ByteBuf buf, final AsciiString path) {
if (path.equals(PATH_SLASH)) {
Hpack.writeIndexedHeaderField(buf, 4);
} else if (path.equals(PATH_INDEX_HTML)) {
Hpack.writeIndexedHeaderField(buf, 5);
} else {
writeLiteralHeaderFieldIncrementalIndexingIndexedName(buf, 4);
writeString(buf, path);
}
}
private void writeScheme(final ByteBuf buf, final AsciiString scheme) {
if (scheme.equals(SCHEME_HTTP)) {
Hpack.writeIndexedHeaderField(buf, 6);
} else if (scheme.equals(SCHEME_HTTPS)) {
Hpack.writeIndexedHeaderField(buf, 7);
} else {
writeLiteralHeaderFieldIncrementalIndexingIndexedName(buf, 2);
writeString(buf, scheme);
}
}
private void writeMethod(final ByteBuf buf, final AsciiString method) {
if (method.equals(HttpMethod.GET.asciiName())) {
Hpack.writeIndexedHeaderField(buf, 2);
} else if (method.equals(HttpMethod.POST.asciiName())) {
Hpack.writeIndexedHeaderField(buf, 3);
} else {
writeLiteralHeaderFieldIncrementalIndexingIndexedName(buf, 2);
writeString(buf, method);
}
}
@Test
public void testWriteUsAsciiString() {
AsciiString usAscii = new AsciiString("NettyRocks");
ByteBuf buf = ReferenceCountUtil.releaseLater(Unpooled.buffer(16));
buf.writeBytes(usAscii.toString().getBytes(CharsetUtil.US_ASCII));
ByteBuf buf2 = ReferenceCountUtil.releaseLater(Unpooled.buffer(16));
ByteBufUtil.writeAscii(buf2, usAscii);
Assert.assertEquals(buf, buf2);
}
private void writeString(final ByteBuf buf, final AsciiString s) {
final int encodedLength = Huffman.encodedLength(s);
if (encodedLength < s.length()) {
Hpack.writeHuffmanString(buf, s, encodedLength);
} else {
Hpack.writeRawString(buf, s);
}
}
@Override
public void validateName(CharSequence name) {
if (name instanceof AsciiString) {
try {
((AsciiString) name).forEachByte(HEADER_NAME_VALIDATOR);
} catch (Exception e) {
PlatformDependent.throwException(e);
}
} else {
checkNotNull(name, "name");
// Go through each character in the name
for (int index = 0; index < name.length(); ++index) {
validateChar(name.charAt(index));
}
}
}
@Test
public void testStaticEncoding() throws Exception {
final AsciiString method = GET.asciiName();
final AsciiString scheme = SCHEME_HTTPS;
final AsciiString authority = AsciiString.of("www.example.com");
final AsciiString path = AsciiString.of("/index.html");
final ByteBuf buf = Unpooled.buffer();
writeMethod(buf, method);
writeScheme(buf, scheme);
writeAuthority(buf, authority);
writePath(buf, path);
final Decoder decoder = new Decoder(Integer.MAX_VALUE, Integer.MAX_VALUE);
final ByteBufInputStream in = new ByteBufInputStream(buf);
final HeaderListener listener = mock(HeaderListener.class);
decoder.decode(in, listener);
verify(listener).addHeader(HEADER_METHOD.array(), method.array(), false);
verify(listener).addHeader(HEADER_SCHEME.array(), scheme.array(), false);
verify(listener).addHeader(HEADER_AUTHORITY.array(), authority.array(), false);
verify(listener).addHeader(HEADER_PATH.array(), path.array(), false);
verifyNoMoreInteractions(listener);
}
@RunWith(Theories.class)
public class HpackTest {
private static final AsciiString PATH_SLASH = AsciiString.of("/");
private static final AsciiString PATH_INDEX_HTML = AsciiString.of("/index.html");
private static final AsciiString SCHEME_HTTP = AsciiString.of("http");
private static final AsciiString SCHEME_HTTPS = AsciiString.of("https");
private static final AsciiString HEADER_METHOD = AsciiString.of(":method");
private static final AsciiString HEADER_SCHEME = AsciiString.of(":scheme");
private static final AsciiString HEADER_AUTHORITY = AsciiString.of(":authority");
private static final AsciiString HEADER_PATH = AsciiString.of(":path");
@Test
public void testStaticEncoding() throws Exception {
final AsciiString method = GET.asciiName();
final AsciiString scheme = SCHEME_HTTPS;
final AsciiString authority = AsciiString.of("www.example.com");
final AsciiString path = AsciiString.of("/index.html");
final ByteBuf buf = Unpooled.buffer();
writeMethod(buf, method);
writeScheme(buf, scheme);
writeAuthority(buf, authority);
writePath(buf, path);
final Decoder decoder = new Decoder(Integer.MAX_VALUE, Integer.MAX_VALUE);
final ByteBufInputStream in = new ByteBufInputStream(buf);
final HeaderListener listener = mock(HeaderListener.class);
decoder.decode(in, listener);
verify(listener).addHeader(HEADER_METHOD.array(), method.array(), false);
verify(listener).addHeader(HEADER_SCHEME.array(), scheme.array(), false);
verify(listener).addHeader(HEADER_AUTHORITY.array(), authority.array(), false);
verify(listener).addHeader(HEADER_PATH.array(), path.array(), false);
verifyNoMoreInteractions(listener);
}
@Theory
public void testWriteReadInteger(
@TestedOn(ints = {1, 2, 3, 4, 5, 6, 7, 8}) int n,
@TestedOn(ints = {0, 1, 17, 4711, 80087, 22193521}) int i)
throws Exception {
final int maxMaskBits = 8 - n;
for (int maskBits = 0; maskBits < maxMaskBits; maskBits++) {
final int mask = 0xFF << (8 - maskBits);
final ByteBuf buf = Unpooled.buffer();
writeInteger(buf, mask, n, i);
assertThat(Hpack.readInteger(buf, n), is(i));
}
}
@Test
public void testHuffmanDecode() throws Exception {
final String expected = "https://www.example.com";
final byte[] encoded =
TestUtil.bytes(
0x9d, 0x29, 0xad, 0x17, 0x18, 0x63, 0xc7, 0x8f, 0x0b, 0x97, 0xc8, 0xe9, 0xae, 0x82,
0xae, 0x43, 0xd3);
final ByteBuf in = Unpooled.wrappedBuffer(encoded);
final ByteBuf out = Unpooled.buffer();
Huffman.decode(in, out);
final String decoded = out.toString(US_ASCII);
assertThat(decoded, is(expected));
}
@Test
public void testHeaderTableSizeUpdate() throws Exception {
for (int i = 0; i < 32; i++) {
int size = 1 << i;
ByteBuf buf = Unpooled.buffer();
Hpack.writeDynamicTableSizeUpdate(buf, size);
int updateSize = Hpack.dynamicTableSizeUpdateSize(size);
assertThat(buf.readableBytes(), is(updateSize));
}
}
@Test
public void testIntegerSize() throws Exception {
for (int n = 1; n <= 8; n++) {
for (int i = 0; i < 32; i++) {
for (int j = 0; j <= i; j++) {
int value = Math.toIntExact((1L << j) - 1);
ByteBuf buf = Unpooled.buffer();
Hpack.writeInteger(buf, 0, n, value);
int calculatedSize = Hpack.integerSize(n, value);
final int actualSize = buf.readableBytes();
assertThat(actualSize, is(calculatedSize));
}
}
}
}
private void writeLiteralHeaderFieldIncrementalIndexingIndexedName(
final ByteBuf buf, final int i) {
writeInteger(buf, 0x40, 6, i);
}
private void writeString(final ByteBuf buf, final AsciiString s) {
final int encodedLength = Huffman.encodedLength(s);
if (encodedLength < s.length()) {
Hpack.writeHuffmanString(buf, s, encodedLength);
} else {
Hpack.writeRawString(buf, s);
}
}
private void writeMethod(final ByteBuf buf, final AsciiString method) {
if (method.equals(HttpMethod.GET.asciiName())) {
Hpack.writeIndexedHeaderField(buf, 2);
} else if (method.equals(HttpMethod.POST.asciiName())) {
Hpack.writeIndexedHeaderField(buf, 3);
} else {
writeLiteralHeaderFieldIncrementalIndexingIndexedName(buf, 2);
writeString(buf, method);
}
}
private void writeScheme(final ByteBuf buf, final AsciiString scheme) {
if (scheme.equals(SCHEME_HTTP)) {
Hpack.writeIndexedHeaderField(buf, 6);
} else if (scheme.equals(SCHEME_HTTPS)) {
Hpack.writeIndexedHeaderField(buf, 7);
} else {
writeLiteralHeaderFieldIncrementalIndexingIndexedName(buf, 2);
writeString(buf, scheme);
}
}
private void writeAuthority(final ByteBuf buf, final AsciiString s) {
writeLiteralHeaderFieldIncrementalIndexingIndexedName(buf, 1);
writeString(buf, s);
}
private void writePath(final ByteBuf buf, final AsciiString path) {
if (path.equals(PATH_SLASH)) {
Hpack.writeIndexedHeaderField(buf, 4);
} else if (path.equals(PATH_INDEX_HTML)) {
Hpack.writeIndexedHeaderField(buf, 5);
} else {
writeLiteralHeaderFieldIncrementalIndexingIndexedName(buf, 4);
writeString(buf, path);
}
}
}
