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;
}
