package io.undertow.server.handlers;
import java.io.IOException;
import io.undertow.UndertowLogger;
import io.undertow.io.IoCallback;
import io.undertow.io.Sender;
import io.undertow.server.HttpContinue;
import io.undertow.server.HttpHandler;
import io.undertow.server.HttpHandlers;
import io.undertow.server.HttpServerExchange;
/**
* Handler that provides support for HTTP/1.1 continue responses.
* <p/>
* By default this will accept all requests. To change this behaviour this
* handler must be subclassed and the {@link #acceptRequest(io.undertow.server.HttpServerExchange)}
* method overridden tp provide the desired behaviour.
*
* @see io.undertow.server.HttpContinue
* @author Stuart Douglas
*/
public class HttpContinueAcceptingHandler implements HttpHandler {
private volatile HttpHandler next;
public HttpContinueAcceptingHandler(HttpHandler next) {
this.next = next;
}
public HttpContinueAcceptingHandler() {
this(ResponseCodeHandler.HANDLE_404);
}
@Override
public void handleRequest(final HttpServerExchange exchange) throws Exception {
if(HttpContinue.requiresContinueResponse(exchange)) {
if(acceptRequest(exchange)) {
HttpContinue.sendContinueResponse(exchange, new IoCallback() {
@Override
public void onComplete(final HttpServerExchange exchange, final Sender sender) {
exchange.dispatch(next);
}
@Override
public void onException(final HttpServerExchange exchange, final Sender sender, final IOException exception) {
UndertowLogger.REQUEST_IO_LOGGER.ioException(exception);
exchange.endExchange();
}
});
} else {
HttpContinue.rejectExchange(exchange);
}
} else {
next.handleRequest(exchange);
}
}
protected boolean acceptRequest(final HttpServerExchange exchange) {
return true;
}
public HttpHandler getNext() {
return next;
}
public HttpContinueAcceptingHandler setNext(final HttpHandler next) {
HttpHandlers.handlerNotNull(next);
this.next = next;
return this;
}
}