/*
* Copyright 2002-2017 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.web.socket.sockjs.client;
import java.net.InetSocketAddress;
import java.net.URI;
import java.util.Collections;
import java.util.List;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.util.Assert;
import org.springframework.util.concurrent.SettableListenableFuture;
import org.springframework.web.socket.CloseStatus;
import org.springframework.web.socket.TextMessage;
import org.springframework.web.socket.WebSocketExtension;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.WebSocketSession;
import org.springframework.web.socket.sockjs.transport.TransportType;
/**
* An extension of {@link AbstractClientSockJsSession} for use with HTTP
* transports simulating a WebSocket session.
*
* @author Rossen Stoyanchev
* @since 4.1
*/
public class XhrClientSockJsSession extends AbstractClientSockJsSession {
private final XhrTransport transport;
private HttpHeaders headers;
private HttpHeaders sendHeaders;
private final URI sendUrl;
private int textMessageSizeLimit = -1;
private int binaryMessageSizeLimit = -1;
public XhrClientSockJsSession(TransportRequest request, WebSocketHandler handler,
XhrTransport transport, SettableListenableFuture<WebSocketSession> connectFuture) {
super(request, handler, connectFuture);
Assert.notNull(transport, "'transport' is required");
this.transport = transport;
this.headers = request.getHttpRequestHeaders();
this.sendHeaders = new HttpHeaders();
if (this.headers != null) {
this.sendHeaders.putAll(this.headers);
}
this.sendHeaders.setContentType(MediaType.APPLICATION_JSON);
this.sendUrl = request.getSockJsUrlInfo().getTransportUrl(TransportType.XHR_SEND);
}
public HttpHeaders getHeaders() {
return this.headers;
}
@Override
public InetSocketAddress getLocalAddress() {
return null;
}
@Override
public InetSocketAddress getRemoteAddress() {
return new InetSocketAddress(getUri().getHost(), getUri().getPort());
}
@Override
public String getAcceptedProtocol() {
return null;
}
@Override
public void setTextMessageSizeLimit(int messageSizeLimit) {
this.textMessageSizeLimit = messageSizeLimit;
}
@Override
public int getTextMessageSizeLimit() {
return this.textMessageSizeLimit;
}
@Override
public void setBinaryMessageSizeLimit(int messageSizeLimit) {
this.binaryMessageSizeLimit = -1;
}
@Override
public int getBinaryMessageSizeLimit() {
return this.binaryMessageSizeLimit;
}
@Override
public List<WebSocketExtension> getExtensions() {
return Collections.emptyList();
}
@Override
protected void sendInternal(TextMessage message) {
this.transport.executeSendRequest(this.sendUrl, this.sendHeaders, message);
}
@Override
protected void disconnect(CloseStatus status) {
// Nothing to do: XHR transports check if session is disconnected.
}
}