@Test
public void decodeShouldSucceed() throws Exception {
ByteBuf buf =
encode(b(":method"), b("GET"), b("akey"), b("avalue"), randomBytes(), randomBytes());
try {
Http2Headers headers = decoder.decodeHeaders(buf);
assertEquals(3, headers.size());
assertEquals("GET", headers.method().toString());
assertEquals("avalue", headers.get(new AsciiString("akey")).toString());
} finally {
buf.release();
}
}
/**
* Checks if a new decoder object is needed for the stream identified by {@code streamId}. This
* method will modify the {@code content-encoding} header contained in {@code builder}.
*
* @param streamId The identifier for the headers inside {@code builder}
* @param builder Object representing headers which have been read
* @param endOfStream Indicates if the stream has ended
* @throws Http2Exception If the {@code content-encoding} is not supported
*/
private void initDecoder(int streamId, Http2Headers headers, boolean endOfStream)
throws Http2Exception {
// Convert the names into a case-insensitive map.
final Http2Stream stream = connection.stream(streamId);
if (stream != null) {
EmbeddedChannel decoder = stream.decompressor();
if (decoder == null) {
if (!endOfStream) {
// Determine the content encoding.
AsciiString contentEncoding = headers.get(CONTENT_ENCODING_LOWER_CASE);
if (contentEncoding == null) {
contentEncoding = IDENTITY;
}
decoder = newContentDecoder(contentEncoding);
if (decoder != null) {
stream.decompressor(decoder);
// Decode the content and remove or replace the existing headers
// so that the message looks like a decoded message.
AsciiString targetContentEncoding = getTargetContentEncoding(contentEncoding);
if (IDENTITY.equalsIgnoreCase(targetContentEncoding)) {
headers.remove(CONTENT_ENCODING_LOWER_CASE);
} else {
headers.set(CONTENT_ENCODING_LOWER_CASE, targetContentEncoding);
}
}
}
} else if (endOfStream) {
cleanup(stream, decoder);
}
if (decoder != null) {
// The content length will be for the compressed data. Since we will decompress the data
// this content-length will not be correct. Instead of queuing messages or delaying sending
// header frames...just remove the content-length header
headers.remove(CONTENT_LENGTH_LOWER_CASE);
}
}
}
