private SpdySynReplyFrame createSynReplyFrame(HttpResponse httpResponse) throws Exception {
boolean chunked = httpResponse.isChunked();
// Get the Stream-ID from the headers
int streamID = SpdyHttpHeaders.getStreamID(httpResponse);
SpdyHttpHeaders.removeStreamID(httpResponse);
// The Connection, Keep-Alive, Proxy-Connection, and Transfer-ENcoding
// headers are not valid and MUST not be sent.
httpResponse.removeHeader(HttpHeaders.Names.CONNECTION);
httpResponse.removeHeader("Keep-Alive");
httpResponse.removeHeader("Proxy-Connection");
httpResponse.removeHeader(HttpHeaders.Names.TRANSFER_ENCODING);
SpdySynReplyFrame spdySynReplyFrame = new DefaultSpdySynReplyFrame(streamID);
// Unfold the first line of the response into name/value pairs
SpdyHeaders.setStatus(spdyVersion, spdySynReplyFrame, httpResponse.getStatus());
SpdyHeaders.setVersion(spdyVersion, spdySynReplyFrame, httpResponse.getProtocolVersion());
// Transfer the remaining HTTP headers
for (Map.Entry<String, String> entry : httpResponse.getHeaders()) {
spdySynReplyFrame.addHeader(entry.getKey(), entry.getValue());
}
if (chunked) {
currentStreamID = streamID;
spdySynReplyFrame.setLast(false);
} else {
spdySynReplyFrame.setLast(httpResponse.getContent().readableBytes() == 0);
}
return spdySynReplyFrame;
}
@SuppressWarnings("deprecation")
private SpdySynReplyFrame createSynReplyFrame(HttpResponse httpResponse) throws Exception {
// Get the Stream-ID from the headers
final HttpHeaders httpHeaders = httpResponse.headers();
int streamID = httpHeaders.getInt(Names.STREAM_ID);
httpHeaders.remove(Names.STREAM_ID);
// The Connection, Keep-Alive, Proxy-Connection, and Transfer-Encoding
// headers are not valid and MUST not be sent.
httpHeaders.remove(HttpHeaders.Names.CONNECTION);
httpHeaders.remove(HttpHeaders.Names.KEEP_ALIVE);
httpHeaders.remove(HttpHeaders.Names.PROXY_CONNECTION);
httpHeaders.remove(HttpHeaders.Names.TRANSFER_ENCODING);
SpdySynReplyFrame spdySynReplyFrame = new DefaultSpdySynReplyFrame(streamID);
SpdyHeaders frameHeaders = spdySynReplyFrame.headers();
// Unfold the first line of the response into name/value pairs
frameHeaders.set(STATUS, httpResponse.status());
frameHeaders.set(VERSION, httpResponse.protocolVersion());
// Transfer the remaining HTTP headers
for (Map.Entry<String, String> entry : httpHeaders) {
spdySynReplyFrame.headers().add(entry.getKey(), entry.getValue());
}
currentStreamId = streamID;
spdySynReplyFrame.setLast(isLast(httpResponse));
return spdySynReplyFrame;
}
private static FullHttpRequest createHttpRequest(int spdyVersion, SpdyHeaderBlock requestFrame)
throws Exception {
// Create the first line of the request from the name/value pairs
HttpMethod method = SpdyHeaders.getMethod(spdyVersion, requestFrame);
String url = SpdyHeaders.getUrl(spdyVersion, requestFrame);
HttpVersion httpVersion = SpdyHeaders.getVersion(spdyVersion, requestFrame);
SpdyHeaders.removeMethod(spdyVersion, requestFrame);
SpdyHeaders.removeUrl(spdyVersion, requestFrame);
SpdyHeaders.removeVersion(spdyVersion, requestFrame);
FullHttpRequest req = new DefaultFullHttpRequest(httpVersion, method, url);
// Remove the scheme header
SpdyHeaders.removeScheme(spdyVersion, requestFrame);
if (spdyVersion >= 3) {
// Replace the SPDY host header with the HTTP host header
String host = SpdyHeaders.getHost(requestFrame);
SpdyHeaders.removeHost(requestFrame);
HttpHeaders.setHost(req, host);
}
for (Map.Entry<String, String> e : requestFrame.headers().entries()) {
req.headers().add(e.getKey(), e.getValue());
}
// The Connection and Keep-Alive headers are no longer valid
HttpHeaders.setKeepAlive(req, true);
// Transfer-Encoding header is not valid
req.headers().remove(HttpHeaders.Names.TRANSFER_ENCODING);
return req;
}
private static void assertHeaders(Object msg, int streamId, boolean last, SpdyHeaders headers) {
assertNotNull(msg);
assertTrue(msg instanceof SpdyHeadersFrame);
SpdyHeadersFrame spdyHeadersFrame = (SpdyHeadersFrame) msg;
assertEquals(spdyHeadersFrame.getStreamId(), streamId);
assertEquals(spdyHeadersFrame.isLast(), last);
for (String name : headers.names()) {
List<String> expectedValues = headers.getAll(name);
List<String> receivedValues = spdyHeadersFrame.headers().getAll(name);
assertTrue(receivedValues.containsAll(expectedValues));
receivedValues.removeAll(expectedValues);
assertTrue(receivedValues.isEmpty());
spdyHeadersFrame.headers().remove(name);
}
assertTrue(spdyHeadersFrame.headers().isEmpty());
}
private static FullHttpResponse createHttpResponse(int spdyVersion, SpdyHeaderBlock responseFrame)
throws Exception {
// Create the first line of the response from the name/value pairs
HttpResponseStatus status = SpdyHeaders.getStatus(spdyVersion, responseFrame);
HttpVersion version = SpdyHeaders.getVersion(spdyVersion, responseFrame);
SpdyHeaders.removeStatus(spdyVersion, responseFrame);
SpdyHeaders.removeVersion(spdyVersion, responseFrame);
FullHttpResponse res = new DefaultFullHttpResponse(version, status);
for (Map.Entry<String, String> e : responseFrame.headers().entries()) {
res.headers().add(e.getKey(), e.getValue());
}
// The Connection and Keep-Alive headers are no longer valid
HttpHeaders.setKeepAlive(res, true);
// Transfer-Encoding header is not valid
res.headers().remove(HttpHeaders.Names.TRANSFER_ENCODING);
res.headers().remove(HttpHeaders.Names.TRAILER);
return res;
}
private SpdySynStreamFrame createSynStreamFrame(HttpMessage httpMessage) throws Exception {
boolean chunked = httpMessage.isChunked();
// Get the Stream-ID, Associated-To-Stream-ID, Priority, URL, and scheme from the headers
int streamID = SpdyHttpHeaders.getStreamID(httpMessage);
int associatedToStreamID = SpdyHttpHeaders.getAssociatedToStreamID(httpMessage);
byte priority = SpdyHttpHeaders.getPriority(httpMessage);
String URL = SpdyHttpHeaders.getUrl(httpMessage);
String scheme = SpdyHttpHeaders.getScheme(httpMessage);
SpdyHttpHeaders.removeStreamID(httpMessage);
SpdyHttpHeaders.removeAssociatedToStreamID(httpMessage);
SpdyHttpHeaders.removePriority(httpMessage);
SpdyHttpHeaders.removeUrl(httpMessage);
SpdyHttpHeaders.removeScheme(httpMessage);
// The Connection, Keep-Alive, Proxy-Connection, and Transfer-Encoding
// headers are not valid and MUST not be sent.
httpMessage.removeHeader(HttpHeaders.Names.CONNECTION);
httpMessage.removeHeader("Keep-Alive");
httpMessage.removeHeader("Proxy-Connection");
httpMessage.removeHeader(HttpHeaders.Names.TRANSFER_ENCODING);
SpdySynStreamFrame spdySynStreamFrame =
new DefaultSpdySynStreamFrame(streamID, associatedToStreamID, priority);
// Unfold the first line of the message into name/value pairs
if (httpMessage instanceof HttpRequest) {
HttpRequest httpRequest = (HttpRequest) httpMessage;
SpdyHeaders.setMethod(spdyVersion, spdySynStreamFrame, httpRequest.getMethod());
SpdyHeaders.setUrl(spdyVersion, spdySynStreamFrame, httpRequest.getUri());
SpdyHeaders.setVersion(spdyVersion, spdySynStreamFrame, httpMessage.getProtocolVersion());
}
if (httpMessage instanceof HttpResponse) {
HttpResponse httpResponse = (HttpResponse) httpMessage;
SpdyHeaders.setStatus(spdyVersion, spdySynStreamFrame, httpResponse.getStatus());
SpdyHeaders.setUrl(spdyVersion, spdySynStreamFrame, URL);
spdySynStreamFrame.setUnidirectional(true);
}
// Replace the HTTP host header with the SPDY host header
if (spdyVersion >= 3) {
String host = HttpHeaders.getHost(httpMessage);
httpMessage.removeHeader(HttpHeaders.Names.HOST);
SpdyHeaders.setHost(spdySynStreamFrame, host);
}
// Set the SPDY scheme header
if (scheme == null) {
scheme = "https";
}
SpdyHeaders.setScheme(spdyVersion, spdySynStreamFrame, scheme);
// Transfer the remaining HTTP headers
for (Map.Entry<String, String> entry : httpMessage.getHeaders()) {
spdySynStreamFrame.addHeader(entry.getKey(), entry.getValue());
}
if (chunked) {
currentStreamID = streamID;
spdySynStreamFrame.setLast(false);
} else {
spdySynStreamFrame.setLast(httpMessage.getContent().readableBytes() == 0);
}
return spdySynStreamFrame;
}
@Override
protected void decode(
ChannelHandlerContext ctx, SpdyDataOrControlFrame msg, MessageBuf<Object> out)
throws Exception {
if (msg instanceof SpdySynStreamFrame) {
// HTTP requests/responses are mapped one-to-one to SPDY streams.
SpdySynStreamFrame spdySynStreamFrame = (SpdySynStreamFrame) msg;
int streamId = spdySynStreamFrame.getStreamId();
if (SpdyCodecUtil.isServerId(streamId)) {
// SYN_STREAM frames initiated by the server are pushed resources
int associatedToStreamId = spdySynStreamFrame.getAssociatedToStreamId();
// If a client receives a SYN_STREAM with an Associated-To-Stream-ID of 0
// it must reply with a RST_STREAM with error code INVALID_STREAM
if (associatedToStreamId == 0) {
SpdyRstStreamFrame spdyRstStreamFrame =
new DefaultSpdyRstStreamFrame(streamId, SpdyStreamStatus.INVALID_STREAM);
ctx.write(spdyRstStreamFrame);
}
String URL = SpdyHeaders.getUrl(spdyVersion, spdySynStreamFrame);
// If a client receives a SYN_STREAM without a 'url' header
// it must reply with a RST_STREAM with error code PROTOCOL_ERROR
if (URL == null) {
SpdyRstStreamFrame spdyRstStreamFrame =
new DefaultSpdyRstStreamFrame(streamId, SpdyStreamStatus.PROTOCOL_ERROR);
ctx.write(spdyRstStreamFrame);
}
try {
FullHttpResponse httpResponseWithEntity =
createHttpResponse(spdyVersion, spdySynStreamFrame);
// Set the Stream-ID, Associated-To-Stream-ID, Priority, and URL as headers
SpdyHttpHeaders.setStreamId(httpResponseWithEntity, streamId);
SpdyHttpHeaders.setAssociatedToStreamId(httpResponseWithEntity, associatedToStreamId);
SpdyHttpHeaders.setPriority(httpResponseWithEntity, spdySynStreamFrame.getPriority());
SpdyHttpHeaders.setUrl(httpResponseWithEntity, URL);
if (spdySynStreamFrame.isLast()) {
HttpHeaders.setContentLength(httpResponseWithEntity, 0);
out.add(httpResponseWithEntity);
} else {
// Response body will follow in a series of Data Frames
putMessage(streamId, httpResponseWithEntity);
}
} catch (Exception e) {
SpdyRstStreamFrame spdyRstStreamFrame =
new DefaultSpdyRstStreamFrame(streamId, SpdyStreamStatus.PROTOCOL_ERROR);
ctx.write(spdyRstStreamFrame);
}
} else {
// SYN_STREAM frames initiated by the client are HTTP requests
try {
FullHttpRequest httpRequestWithEntity =
createHttpRequest(spdyVersion, spdySynStreamFrame);
// Set the Stream-ID as a header
SpdyHttpHeaders.setStreamId(httpRequestWithEntity, streamId);
if (spdySynStreamFrame.isLast()) {
out.add(httpRequestWithEntity);
} else {
// Request body will follow in a series of Data Frames
putMessage(streamId, httpRequestWithEntity);
}
} catch (Exception e) {
// If a client sends a SYN_STREAM without all of the getMethod, url (host and path),
// scheme, and version headers the server must reply with a HTTP 400 BAD REQUEST reply.
// Also sends HTTP 400 BAD REQUEST reply if header name/value pairs are invalid
SpdySynReplyFrame spdySynReplyFrame = new DefaultSpdySynReplyFrame(streamId);
spdySynReplyFrame.setLast(true);
SpdyHeaders.setStatus(spdyVersion, spdySynReplyFrame, HttpResponseStatus.BAD_REQUEST);
SpdyHeaders.setVersion(spdyVersion, spdySynReplyFrame, HttpVersion.HTTP_1_0);
ctx.write(spdySynReplyFrame);
}
}
} else if (msg instanceof SpdySynReplyFrame) {
SpdySynReplyFrame spdySynReplyFrame = (SpdySynReplyFrame) msg;
int streamId = spdySynReplyFrame.getStreamId();
try {
FullHttpResponse httpResponseWithEntity =
createHttpResponse(spdyVersion, spdySynReplyFrame);
// Set the Stream-ID as a header
SpdyHttpHeaders.setStreamId(httpResponseWithEntity, streamId);
if (spdySynReplyFrame.isLast()) {
HttpHeaders.setContentLength(httpResponseWithEntity, 0);
out.add(httpResponseWithEntity);
} else {
// Response body will follow in a series of Data Frames
putMessage(streamId, httpResponseWithEntity);
}
} catch (Exception e) {
// If a client receives a SYN_REPLY without valid getStatus and version headers
// the client must reply with a RST_STREAM frame indicating a PROTOCOL_ERROR
SpdyRstStreamFrame spdyRstStreamFrame =
new DefaultSpdyRstStreamFrame(streamId, SpdyStreamStatus.PROTOCOL_ERROR);
ctx.write(spdyRstStreamFrame);
}
} else if (msg instanceof SpdyHeadersFrame) {
SpdyHeadersFrame spdyHeadersFrame = (SpdyHeadersFrame) msg;
int streamId = spdyHeadersFrame.getStreamId();
FullHttpMessage fullHttpMessage = getMessage(streamId);
// If message is not in map discard HEADERS frame.
if (fullHttpMessage == null) {
return;
}
for (Map.Entry<String, String> e : spdyHeadersFrame.headers().entries()) {
fullHttpMessage.headers().add(e.getKey(), e.getValue());
}
if (spdyHeadersFrame.isLast()) {
HttpHeaders.setContentLength(fullHttpMessage, fullHttpMessage.content().readableBytes());
removeMessage(streamId);
out.add(fullHttpMessage);
}
} else if (msg instanceof SpdyDataFrame) {
SpdyDataFrame spdyDataFrame = (SpdyDataFrame) msg;
int streamId = spdyDataFrame.getStreamId();
FullHttpMessage fullHttpMessage = getMessage(streamId);
// If message is not in map discard Data Frame.
if (fullHttpMessage == null) {
return;
}
ByteBuf content = fullHttpMessage.content();
if (content.readableBytes() > maxContentLength - spdyDataFrame.content().readableBytes()) {
removeMessage(streamId);
throw new TooLongFrameException(
"HTTP content length exceeded " + maxContentLength + " bytes.");
}
ByteBuf spdyDataFrameData = spdyDataFrame.content();
int spdyDataFrameDataLen = spdyDataFrameData.readableBytes();
content.writeBytes(spdyDataFrameData, spdyDataFrameData.readerIndex(), spdyDataFrameDataLen);
if (spdyDataFrame.isLast()) {
HttpHeaders.setContentLength(fullHttpMessage, content.readableBytes());
removeMessage(streamId);
out.add(fullHttpMessage);
}
} else if (msg instanceof SpdyRstStreamFrame) {
SpdyRstStreamFrame spdyRstStreamFrame = (SpdyRstStreamFrame) msg;
int streamId = spdyRstStreamFrame.getStreamId();
removeMessage(streamId);
}
}
@SuppressWarnings("deprecation")
private SpdySynStreamFrame createSynStreamFrame(HttpMessage httpMessage) throws Exception {
// Get the Stream-ID, Associated-To-Stream-ID, Priority, URL, and scheme from the headers
final HttpHeaders httpHeaders = httpMessage.headers();
int streamID = httpHeaders.getInt(Names.STREAM_ID);
int associatedToStreamId = httpHeaders.getInt(Names.ASSOCIATED_TO_STREAM_ID, 0);
byte priority = (byte) httpHeaders.getInt(Names.PRIORITY, 0);
String URL = httpHeaders.get(Names.URL);
String scheme = httpHeaders.get(Names.SCHEME);
httpHeaders.remove(Names.STREAM_ID);
httpHeaders.remove(Names.ASSOCIATED_TO_STREAM_ID);
httpHeaders.remove(Names.PRIORITY);
httpHeaders.remove(Names.URL);
httpHeaders.remove(Names.SCHEME);
// The Connection, Keep-Alive, Proxy-Connection, and Transfer-Encoding
// headers are not valid and MUST not be sent.
httpHeaders.remove(HttpHeaders.Names.CONNECTION);
httpHeaders.remove(HttpHeaders.Names.KEEP_ALIVE);
httpHeaders.remove(HttpHeaders.Names.PROXY_CONNECTION);
httpHeaders.remove(HttpHeaders.Names.TRANSFER_ENCODING);
SpdySynStreamFrame spdySynStreamFrame =
new DefaultSpdySynStreamFrame(streamID, associatedToStreamId, priority);
// Unfold the first line of the message into name/value pairs
SpdyHeaders frameHeaders = spdySynStreamFrame.headers();
if (httpMessage instanceof FullHttpRequest) {
HttpRequest httpRequest = (HttpRequest) httpMessage;
frameHeaders.set(METHOD, httpRequest.method());
frameHeaders.set(PATH, httpRequest.uri());
frameHeaders.set(VERSION, httpMessage.protocolVersion());
}
if (httpMessage instanceof HttpResponse) {
HttpResponse httpResponse = (HttpResponse) httpMessage;
frameHeaders.set(STATUS, httpResponse.status());
frameHeaders.set(PATH, URL);
frameHeaders.set(VERSION, httpMessage.protocolVersion());
spdySynStreamFrame.setUnidirectional(true);
}
// Replace the HTTP host header with the SPDY host header
if (spdyVersion >= 3) {
CharSequence host = httpHeaders.getUnconverted(HttpHeaders.Names.HOST);
httpHeaders.remove(HttpHeaders.Names.HOST);
frameHeaders.set(HOST, host);
}
// Set the SPDY scheme header
if (scheme == null) {
scheme = "https";
}
frameHeaders.set(SCHEME, scheme);
// Transfer the remaining HTTP headers
for (Map.Entry<String, String> entry : httpHeaders) {
frameHeaders.add(entry.getKey(), entry.getValue());
}
currentStreamId = spdySynStreamFrame.streamId();
spdySynStreamFrame.setLast(isLast(httpMessage));
return spdySynStreamFrame;
}
