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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "iocomponent.h"
#include <vespa/vespalib/net/server_socket.h>
class FNET_IPacketStreamer;
class FNET_IServerAdapter;
/**
* Class used to listen for incoming connections on a single TCP/IP
* port.
**/
class FNET_Connector : public FNET_IOComponent
{
private:
FNET_IPacketStreamer *_streamer;
FNET_IServerAdapter *_serverAdapter;
vespalib::ServerSocket _server_socket;
uint32_t _cached_port;
FNET_Connector(const FNET_Connector &);
FNET_Connector &operator=(const FNET_Connector &);
public:
/**
* Construct a connector.
*
* @param owner the TransportThread object serving this connector
* @param streamer custom packet streamer
* @param serverAdapter object for custom channel creation
* @param spec listen spec for this connector
* @param server_socket the underlying server socket
**/
FNET_Connector(FNET_TransportThread *owner,
FNET_IPacketStreamer *streamer,
FNET_IServerAdapter *serverAdapter,
const char *spec,
vespalib::ServerSocket server_socket);
/**
* Obtain the port number of the underlying server socket.
*
* @return port number
**/
uint32_t GetPortNumber() const;
FNET_IServerAdapter *server_adapter() override;
/**
* Close this connector. This method must be called in the transport
* thread in order to avoid race conditions related to socket event
* registration, deregistration and triggering.
**/
void Close() override;
/**
* Called by the transport layer when a read event has occurred. If
* an incoming connection could be accepted, an event is posted on
* the transport thread event queue.
*
* @return false if connector is broken, true otherwise.
**/
bool HandleReadEvent() override;
/**
* Called by the transport layer when a write event has
* occurred. Note that this should never happen during normal
* operation. This method simply ignores the event, disables further
* write events and returns true.
*
* @return true.
**/
bool HandleWriteEvent() override;
};
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