@Override
public void exchangeTerminated(HttpExchange exchange, Result result) {
super.exchangeTerminated(exchange, result);
Response response = result.getResponse();
HttpFields responseHeaders = response.getHeaders();
String closeReason = null;
if (result.isFailed()) closeReason = "failure";
else if (receiver.isShutdown()) closeReason = "server close";
if (closeReason == null) {
if (response.getVersion().compareTo(HttpVersion.HTTP_1_1) < 0) {
// HTTP 1.0 must close the connection unless it has
// an explicit keep alive or it's a CONNECT method.
boolean keepAlive =
responseHeaders.contains(HttpHeader.CONNECTION, HttpHeaderValue.KEEP_ALIVE.asString());
boolean connect = HttpMethod.CONNECT.is(exchange.getRequest().getMethod());
if (!keepAlive && !connect) closeReason = "http/1.0";
} else {
// HTTP 1.1 or greater closes only if it has an explicit close.
if (responseHeaders.contains(HttpHeader.CONNECTION, HttpHeaderValue.CLOSE.asString()))
closeReason = "http/1.1";
}
}
if (closeReason != null) {
if (LOG.isDebugEnabled()) LOG.debug("Closing, reason: {} - {}", closeReason, connection);
connection.close();
} else {
if (response.getStatus() == HttpStatus.SWITCHING_PROTOCOLS_101) connection.remove();
else release();
}
}
@Override
public Result exchangeTerminating(HttpExchange exchange, Result result) {
if (result.isFailed()) return result;
HttpResponse response = exchange.getResponse();
if ((response.getVersion() == HttpVersion.HTTP_1_1)
&& (response.getStatus() == HttpStatus.SWITCHING_PROTOCOLS_101)) {
String connection = response.getHeaders().get(HttpHeader.CONNECTION);
if ((connection == null) || !connection.toLowerCase(Locale.US).contains("upgrade")) {
return new Result(
result,
new HttpResponseException(
"101 Switching Protocols without Connection: Upgrade not supported", response));
}
// Upgrade Response
HttpRequest request = exchange.getRequest();
if (request instanceof HttpConnectionUpgrader) {
HttpConnectionUpgrader listener = (HttpConnectionUpgrader) request;
try {
listener.upgrade(response, getHttpConnection());
} catch (Throwable x) {
return new Result(result, x);
}
}
}
return result;
}
protected boolean success() {
HttpExchange exchange = connection.getExchange();
if (exchange == null) return false;
AtomicMarkableReference<Result> completion = exchange.responseComplete(null);
if (!completion.isMarked()) return false;
parser.reset();
decoder = null;
if (!updateState(State.RECEIVE, State.IDLE)) throw new IllegalStateException();
exchange.terminateResponse();
HttpResponse response = exchange.getResponse();
List<Response.ResponseListener> listeners = exchange.getConversation().getResponseListeners();
ResponseNotifier notifier = connection.getDestination().getResponseNotifier();
notifier.notifySuccess(listeners, response);
LOG.debug("Received {}", response);
Result result = completion.getReference();
if (result != null) {
connection.complete(exchange, !result.isFailed());
notifier.notifyComplete(listeners, result);
}
return true;
}
