/*
* Copyright 2002-2014 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.transport.handler;
import java.io.IOException;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.converter.FormHttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.util.MultiValueMap;
import org.springframework.util.StringUtils;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.sockjs.SockJsException;
import org.springframework.web.socket.sockjs.frame.SockJsMessageCodec;
import org.springframework.web.socket.sockjs.transport.TransportHandler;
import org.springframework.web.socket.sockjs.transport.TransportType;
import org.springframework.web.socket.sockjs.transport.session.AbstractHttpSockJsSession;
/**
* A {@link TransportHandler} that receives messages over HTTP.
*
* @author Rossen Stoyanchev
*/
public class JsonpReceivingTransportHandler extends AbstractHttpReceivingTransportHandler {
private final FormHttpMessageConverter formConverter = new FormHttpMessageConverter();
@Override
public TransportType getTransportType() {
return TransportType.JSONP_SEND;
}
@Override
public void handleRequestInternal(ServerHttpRequest request, ServerHttpResponse response,
WebSocketHandler wsHandler, AbstractHttpSockJsSession sockJsSession) throws SockJsException {
super.handleRequestInternal(request, response, wsHandler, sockJsSession);
try {
response.getBody().write("ok".getBytes("UTF-8"));
}
catch (IOException ex) {
throw new SockJsException("Failed to write to the response body", sockJsSession.getId(), ex);
}
}
@Override
protected String[] readMessages(ServerHttpRequest request) throws IOException {
SockJsMessageCodec messageCodec = getServiceConfig().getMessageCodec();
MediaType contentType = request.getHeaders().getContentType();
if (contentType != null && MediaType.APPLICATION_FORM_URLENCODED.isCompatibleWith(contentType)) {
MultiValueMap<String, String> map = this.formConverter.read(null, request);
String d = map.getFirst("d");
return (StringUtils.hasText(d) ? messageCodec.decode(d) : null);
}
else {
return messageCodec.decodeInputStream(request.getBody());
}
}
@Override
protected HttpStatus getResponseStatus() {
return HttpStatus.OK;
}
}