/*
 * Copyright 2002-2018 the original author or authors.
 *
 * 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 org.springframework.http.server.reactive;

import java.net.InetSocketAddress;
import java.net.URI;
import java.net.URISyntaxException;
import javax.net.ssl.SSLSession;

import io.netty.handler.codec.http.HttpHeaderNames;
import io.netty.handler.codec.http.cookie.Cookie;
import io.netty.handler.ssl.SslHandler;
import reactor.core.publisher.Flux;
import reactor.netty.Connection;
import reactor.netty.http.server.HttpServerRequest;

import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.io.buffer.NettyDataBufferFactory;
import org.springframework.http.HttpCookie;
import org.springframework.http.HttpHeaders;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;

Adapt ServerHttpRequest to the Reactor HttpServerRequest.
Author:Stephane Maldini, Rossen Stoyanchev
Since:5.0
/** * Adapt {@link ServerHttpRequest} to the Reactor {@link HttpServerRequest}. * * @author Stephane Maldini * @author Rossen Stoyanchev * @since 5.0 */
class ReactorServerHttpRequest extends AbstractServerHttpRequest { private final HttpServerRequest request; private final NettyDataBufferFactory bufferFactory; public ReactorServerHttpRequest(HttpServerRequest request, NettyDataBufferFactory bufferFactory) throws URISyntaxException { super(initUri(request), "", initHeaders(request)); Assert.notNull(bufferFactory, "DataBufferFactory must not be null"); this.request = request; this.bufferFactory = bufferFactory; } private static URI initUri(HttpServerRequest request) throws URISyntaxException { Assert.notNull(request, "HttpServerRequest must not be null"); return new URI(resolveBaseUrl(request).toString() + resolveRequestUri(request)); } private static URI resolveBaseUrl(HttpServerRequest request) throws URISyntaxException { String scheme = getScheme(request); String header = request.requestHeaders().get(HttpHeaderNames.HOST); if (header != null) { final int portIndex; if (header.startsWith("[")) { portIndex = header.indexOf(':', header.indexOf(']')); } else { portIndex = header.indexOf(':'); } if (portIndex != -1) { try { return new URI(scheme, null, header.substring(0, portIndex), Integer.parseInt(header.substring(portIndex + 1)), null, null, null); } catch (NumberFormatException ex) { throw new URISyntaxException(header, "Unable to parse port", portIndex); } } else { return new URI(scheme, header, null, null); } } else { InetSocketAddress localAddress = request.hostAddress(); return new URI(scheme, null, localAddress.getHostString(), localAddress.getPort(), null, null, null); } } private static String getScheme(HttpServerRequest request) { return request.scheme(); } private static String resolveRequestUri(HttpServerRequest request) { String uri = request.uri(); for (int i = 0; i < uri.length(); i++) { char c = uri.charAt(i); if (c == '/' || c == '?' || c == '#') { break; } if (c == ':' && (i + 2 < uri.length())) { if (uri.charAt(i + 1) == '/' && uri.charAt(i + 2) == '/') { for (int j = i + 3; j < uri.length(); j++) { c = uri.charAt(j); if (c == '/' || c == '?' || c == '#') { return uri.substring(j); } } return ""; } } } return uri; } private static HttpHeaders initHeaders(HttpServerRequest channel) { NettyHeadersAdapter headersMap = new NettyHeadersAdapter(channel.requestHeaders()); return new HttpHeaders(headersMap); } @Override public String getMethodValue() { return this.request.method().name(); } @Override protected MultiValueMap<String, HttpCookie> initCookies() { MultiValueMap<String, HttpCookie> cookies = new LinkedMultiValueMap<>(); for (CharSequence name : this.request.cookies().keySet()) { for (Cookie cookie : this.request.cookies().get(name)) { HttpCookie httpCookie = new HttpCookie(name.toString(), cookie.value()); cookies.add(name.toString(), httpCookie); } } return cookies; } @Override public InetSocketAddress getRemoteAddress() { return this.request.remoteAddress(); } @Override @Nullable protected SslInfo initSslInfo() { SslHandler sslHandler = ((Connection) this.request).channel().pipeline().get(SslHandler.class); if (sslHandler != null) { SSLSession session = sslHandler.engine().getSession(); return new DefaultSslInfo(session); } return null; } @Override public Flux<DataBuffer> getBody() { return this.request.receive().retain().map(this.bufferFactory::wrap); } @SuppressWarnings("unchecked") @Override public <T> T getNativeRequest() { return (T) this.request; } @Override @Nullable protected String initId() { return this.request instanceof Connection ? ((Connection) this.request).channel().id().asShortText() : null; } }