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Java library for Azure Service Bus. Please note, a newer package com.azure:azure-messaging-servicebus for Azure Service Bus is available as of December 2020. While this package will continue to receive critical bug fixes, we strongly encourage you to upgrade. Read the migration guide at https://aka.ms/azsdk/java/migrate/sb for more details.

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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.

package com.microsoft.azure.servicebus.amqp;

import com.microsoft.azure.proton.transport.ws.impl.WebSocketImpl;
import com.microsoft.azure.servicebus.primitives.ClientConstants;
import org.apache.qpid.proton.engine.Event;
import org.apache.qpid.proton.engine.impl.TransportInternal;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class WebSocketConnectionHandler extends ConnectionHandler {

    private static final Logger TRACE_LOGGER = LoggerFactory.getLogger(WebSocketConnectionHandler.class);

    public WebSocketConnectionHandler(IAmqpConnection messagingFactory) {
        super(messagingFactory);
    }

    @Override
    public void addTransportLayers(final Event event, final TransportInternal transport) {
        final String hostName = event.getConnection().getHostname();

        final WebSocketImpl webSocket = new WebSocketImpl();
        webSocket.configure(
                hostName,
                "/$servicebus/websocket",
                "",
                0,
                "AMQPWSB10",
                null,
                null);

        transport.addTransportLayer(webSocket);

        if (TRACE_LOGGER.isInfoEnabled()) {
            TRACE_LOGGER.info("addWebsocketHandshake: hostname[" + hostName + "]");
        }

        super.addTransportLayers(event, transport);
    }

    @Override
    public int getProtocolPort() {
        return ClientConstants.HTTPS_PORT;
    }

    @Override
    public int getMaxFrameSize() {
        // This is the current limitation of https://github.com/Azure/qpid-proton-j-extensions
        // once, this library enables larger frames - this property can be removed.
        return AmqpConstants.WEBSOCKET_MAX_FRAME_SIZE;
    }
}