org.springframework.web.socket.sockjs.client.Transport.java Source code

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Here is the source code for org.springframework.web.socket.sockjs.client.Transport.java

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/*
 * Copyright 2002-2015 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
 *
 *      https://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.util.List;

import org.springframework.util.concurrent.ListenableFuture;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.WebSocketSession;
import org.springframework.web.socket.sockjs.transport.TransportType;

/**
 * A client-side implementation for a SockJS transport.
 *
 * @author Rossen Stoyanchev
 * @since 4.1
 */
public interface Transport {

    /**
     * Return the SockJS transport types that this transport can be used for.
     * In particular since from a client perspective there is no difference
     * between XHR and XHR streaming, an {@code XhrTransport} could do both.
     */
    List<TransportType> getTransportTypes();

    /**
     * Connect the transport.
     * @param request the transport request.
     * @param webSocketHandler the application handler to delegate lifecycle events to.
     * @return a future to indicate success or failure to connect.
     */
    ListenableFuture<WebSocketSession> connect(TransportRequest request, WebSocketHandler webSocketHandler);

}