io.undertow.server.handlers.HttpTraceHandler Maven / Gradle / Ivy
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* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.undertow.server.handlers;
import java.util.Collections;
import java.util.Map;
import java.util.Set;
import io.undertow.server.HandlerWrapper;
import io.undertow.server.HttpHandler;
import io.undertow.server.HttpServerExchange;
import io.undertow.server.handlers.builder.HandlerBuilder;
import io.undertow.util.HeaderValues;
import io.undertow.util.Headers;
import io.undertow.util.Methods;
/**
* A handler that handles HTTP trace requests
*
* @author Stuart Douglas
*/
public class HttpTraceHandler implements HttpHandler {
private final HttpHandler handler;
public HttpTraceHandler(final HttpHandler handler) {
this.handler = handler;
}
@Override
public void handleRequest(final HttpServerExchange exchange) throws Exception {
if(exchange.getRequestMethod().equals(Methods.TRACE)) {
exchange.getResponseHeaders().put(Headers.CONTENT_TYPE, "message/http");
StringBuilder body = new StringBuilder("TRACE ");
body.append(exchange.getRequestURI());
if(!exchange.getQueryString().isEmpty()) {
body.append('?');
body.append(exchange.getQueryString());
}
body.append(' ');
body.append(exchange.getProtocol().toString());
body.append("\r\n");
for(HeaderValues header : exchange.getRequestHeaders()) {
for(String value : header) {
body.append(header.getHeaderName());
body.append(": ");
body.append(value);
body.append("\r\n");
}
}
body.append("\r\n");
exchange.getResponseSender().send(body.toString());
} else {
handler.handleRequest(exchange);
}
}
@Override
public String toString() {
return "trace()";
}
public static class Builder implements HandlerBuilder {
@Override
public String name() {
return "trace";
}
@Override
public Map> parameters() {
return Collections.emptyMap();
}
@Override
public Set requiredParameters() {
return Collections.emptySet();
}
@Override
public String defaultParameter() {
return null;
}
@Override
public HandlerWrapper build(Map config) {
return new Wrapper();
}
}
private static class Wrapper implements HandlerWrapper {
@Override
public HttpHandler wrap(HttpHandler handler) {
return new HttpTraceHandler(handler);
}
}
}