Package com.rabbitmq.client.impl
Class AMQConnection
- java.lang.Object
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- com.rabbitmq.client.impl.ShutdownNotifierComponent
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- com.rabbitmq.client.impl.AMQConnection
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- All Implemented Interfaces:
Connection
,NetworkConnection
,ShutdownNotifier
,Closeable
,AutoCloseable
- Direct Known Subclasses:
RecoveryAwareAMQConnection
public class AMQConnection extends ShutdownNotifierComponent implements Connection, NetworkConnection
Concrete class representing and managing an AMQP connection to a broker.To create a broker connection, use
ConnectionFactory
. SeeConnection
for an example.
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Field Summary
Fields Modifier and Type Field Description protected ConsumerWorkService
_workService
static double
CHANNEL_SHUTDOWN_TIMEOUT_MULTIPLIER
protected MetricsCollector
metricsCollector
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Constructor Summary
Constructors Constructor Description AMQConnection(ConnectionParams params, FrameHandler frameHandler)
AMQConnection(ConnectionParams params, FrameHandler frameHandler, MetricsCollector metricsCollector)
Construct a new connection
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description void
abort()
Public API - Abort this connection and all its channels with theAMQP.REPLY_SUCCESS
close code and message 'OK'.void
abort(int timeout)
Public API - Abort this connection and all its channels with theAMQP.REPLY_SUCCESS
close code and message 'OK'.void
abort(int closeCode, String closeMessage)
Public API - Abort this connection and all its channels.void
abort(int closeCode, String closeMessage, int timeout)
Public API - Abort this connection and all its channels.void
addBlockedListener(BlockedListener listener)
Add aBlockedListener
.void
addRecoveryCanBeginListener(RecoveryCanBeginListener fn)
void
clearBlockedListeners()
Remove allBlockedListener
s.void
close()
Public API - Close this connection and all its channels with theAMQP.REPLY_SUCCESS
close code and message 'OK'.void
close(int timeout)
Public API - Close this connection and all its channels with theAMQP.REPLY_SUCCESS
close code and message 'OK'.void
close(int closeCode, String closeMessage)
Public API - Close this connection and all its channels.void
close(int closeCode, String closeMessage, boolean initiatedByApplication, Throwable cause)
Protected API - Delegates tothe six-argument close method
, passing -1 for the timeout, and false for the abort flag.void
close(int closeCode, String closeMessage, boolean initiatedByApplication, Throwable cause, int timeout, boolean abort)
Protected API - Close this connection with the given code, message, source and timeout value for all the close operations to complete.void
close(int closeCode, String closeMessage, int timeout)
Public API - Close this connection and all its channels.protected void
configureChannelManager(ChannelManager channelManager)
Channel
createChannel()
Public API - Create a new channel, using an internally allocated channel number.Channel
createChannel(int channelNumber)
Public API - Create a new channel, using the specified channel number if possible.static Map<String,Object>
defaultClientProperties()
Retrieve a copy of the default table of client properties that will be sent to the server during connection startup.void
disconnectChannel(ChannelN channel)
Protected API - respond, in the driver thread, to a ShutdownSignal.void
doFinalShutdown()
private APIvoid
flush()
Public API - flush the output buffersInetAddress
getAddress()
Retrieve the host.int
getChannelMax()
Get the negotiated maximum channel number.int
getChannelRpcTimeout()
Map<String,Object>
getClientProperties()
Get a copy of the map of client properties sent to the serverString
getClientProvidedName()
Returns client-provided connection name, if any.ExceptionHandler
getExceptionHandler()
Protected API - retrieve the current ExceptionHandlerFrameHandler
getFrameHandler()
int
getFrameMax()
Get the negotiated maximum frame size.int
getHeartbeat()
Get the negotiated heartbeat interval.String
getId()
Public API - Returns a unique ID for this connection.InetAddress
getLocalAddress()
Retrieve the local host.int
getLocalPort()
Retrieve the local port number.int
getPort()
Retrieve the port number.Map<String,Object>
getServerProperties()
Retrieve the server properties.ThreadFactory
getThreadFactory()
TrafficListener
getTrafficListener()
void
handleConnectionClose(Command closeCommand)
void
handleHeartbeatFailure()
private APIvoid
handleIoError(Throwable ex)
private APIboolean
handleReadFrame(Frame frame)
private APIboolean
hasBrokerInitiatedShutdown()
protected ChannelManager
instantiateChannelManager(int channelMax, ThreadFactory threadFactory)
boolean
isRunning()
protected int
negotiateChannelMax(int requestedChannelMax, int serverMax)
Private API, allows for easier simulation of bogus clients.boolean
processControlCommand(Command c)
Handles incoming control commands on channel zero.boolean
removeBlockedListener(BlockedListener listener)
Remove aBlockedListener
.void
removeRecoveryCanBeginListener(RecoveryCanBeginListener fn)
void
setHeartbeat(int heartbeat)
Protected API - set the heartbeat timeout.void
setId(String id)
Public API - Sets a unique ID for this connection.void
setThreadFactory(ThreadFactory threadFactory)
Makes it possible to override thread factory that is used to instantiate connection network I/O loop.ShutdownSignalException
shutdown(Method reason, boolean initiatedByApplication, Throwable cause, boolean notifyRpc)
Protected API - causes all attached channels to terminate (shutdown) with a ShutdownSignal built from the argument, and stops this connection from accepting further work from the application.void
start()
Start up the connection, including the MainLoop thread.void
startMainLoop()
Package private API, allows for easier testing.String
toString()
boolean
willCheckRpcResponseType()
boolean
willShutDownConsumerExecutor()
Public APIvoid
writeFrame(Frame f)
Public API - sends a frame directly to the broker.-
Methods inherited from class com.rabbitmq.client.impl.ShutdownNotifierComponent
addShutdownListener, getCloseReason, isOpen, notifyListeners, removeShutdownListener, setShutdownCauseIfOpen
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface com.rabbitmq.client.ShutdownNotifier
addShutdownListener, getCloseReason, isOpen, notifyListeners, removeShutdownListener
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Field Detail
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CHANNEL_SHUTDOWN_TIMEOUT_MULTIPLIER
public static final double CHANNEL_SHUTDOWN_TIMEOUT_MULTIPLIER
- See Also:
- Constant Field Values
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_workService
protected ConsumerWorkService _workService
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metricsCollector
protected final MetricsCollector metricsCollector
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Constructor Detail
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AMQConnection
public AMQConnection(ConnectionParams params, FrameHandler frameHandler)
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AMQConnection
public AMQConnection(ConnectionParams params, FrameHandler frameHandler, MetricsCollector metricsCollector)
Construct a new connection- Parameters:
params
- parameters for it
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Method Detail
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defaultClientProperties
public static Map<String,Object> defaultClientProperties()
Retrieve a copy of the default table of client properties that will be sent to the server during connection startup. This method is called when each new ConnectionFactory instance is constructed.- Returns:
- a map of client properties
- See Also:
Connection.getClientProperties()
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disconnectChannel
public final void disconnectChannel(ChannelN channel)
Protected API - respond, in the driver thread, to a ShutdownSignal.- Parameters:
channel
- the channel to disconnect
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getAddress
public InetAddress getAddress()
Retrieve the host.- Specified by:
getAddress
in interfaceConnection
- Specified by:
getAddress
in interfaceNetworkConnection
- Returns:
- the hostname of the peer we're connected to.
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getLocalAddress
public InetAddress getLocalAddress()
Description copied from interface:NetworkConnection
Retrieve the local host.- Specified by:
getLocalAddress
in interfaceNetworkConnection
- Returns:
- the client socket address.
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getPort
public int getPort()
Retrieve the port number.- Specified by:
getPort
in interfaceConnection
- Specified by:
getPort
in interfaceNetworkConnection
- Returns:
- the port number of the peer we're connected to.
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getLocalPort
public int getLocalPort()
Description copied from interface:NetworkConnection
Retrieve the local port number.- Specified by:
getLocalPort
in interfaceNetworkConnection
- Returns:
- the client socket port number
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getFrameHandler
public FrameHandler getFrameHandler()
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getServerProperties
public Map<String,Object> getServerProperties()
Retrieve the server properties.- Specified by:
getServerProperties
in interfaceConnection
- Returns:
- a map of the server properties. This typically includes the product name and version of the server.
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start
public void start() throws IOException, TimeoutException
Start up the connection, including the MainLoop thread. Sends the protocol version negotiation header, and runs through Connection.Start/.StartOk, Connection.Tune/.TuneOk, and then calls Connection.Open and waits for the OpenOk. Sets heart-beat and frame max values after tuning has taken place.- Throws:
IOException
- if an error is encountered either before, or during, protocol negotiation; sub-classesProtocolVersionMismatchException
andPossibleAuthenticationFailureException
will be thrown in the corresponding circumstances.AuthenticationFailureException
will be thrown if the broker closes the connection with ACCESS_REFUSED. If an exception is thrown, connection resources allocated can all be garbage collected when the connection object is no longer referenced.TimeoutException
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instantiateChannelManager
protected ChannelManager instantiateChannelManager(int channelMax, ThreadFactory threadFactory)
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configureChannelManager
protected void configureChannelManager(ChannelManager channelManager)
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startMainLoop
public void startMainLoop()
Package private API, allows for easier testing.
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negotiateChannelMax
protected int negotiateChannelMax(int requestedChannelMax, int serverMax)
Private API, allows for easier simulation of bogus clients.
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getChannelMax
public int getChannelMax()
Get the negotiated maximum channel number. Usable channel numbers range from 1 to this number, inclusive.- Specified by:
getChannelMax
in interfaceConnection
- Returns:
- the maximum channel number permitted for this connection.
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getFrameMax
public int getFrameMax()
Get the negotiated maximum frame size.- Specified by:
getFrameMax
in interfaceConnection
- Returns:
- the maximum frame size, in octets; zero if unlimited
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getHeartbeat
public int getHeartbeat()
Get the negotiated heartbeat interval.- Specified by:
getHeartbeat
in interfaceConnection
- Returns:
- the heartbeat interval, in seconds; zero if none
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setHeartbeat
public void setHeartbeat(int heartbeat)
Protected API - set the heartbeat timeout. Should only be called during tuning.
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setThreadFactory
public void setThreadFactory(ThreadFactory threadFactory)
Makes it possible to override thread factory that is used to instantiate connection network I/O loop. Only necessary in the environments with restricted- Parameters:
threadFactory
- thread factory to use
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getThreadFactory
public ThreadFactory getThreadFactory()
- Returns:
- Thread factory used by this connection.
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getClientProperties
public Map<String,Object> getClientProperties()
Description copied from interface:Connection
Get a copy of the map of client properties sent to the server- Specified by:
getClientProperties
in interfaceConnection
- Returns:
- a copy of the map of client properties
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getClientProvidedName
public String getClientProvidedName()
Description copied from interface:Connection
Returns client-provided connection name, if any. Note that the value returned does not uniquely identify a connection and cannot be used as a connection identifier in HTTP API requests.- Specified by:
getClientProvidedName
in interfaceConnection
- Returns:
- client-provided connection name, if any
- See Also:
ConnectionFactory.newConnection(Address[], String)
,ConnectionFactory.newConnection(ExecutorService, Address[], String)
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getExceptionHandler
public ExceptionHandler getExceptionHandler()
Protected API - retrieve the current ExceptionHandler- Specified by:
getExceptionHandler
in interfaceConnection
- See Also:
ExceptionHandler
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willShutDownConsumerExecutor
public boolean willShutDownConsumerExecutor()
Public API- Returns:
- true if this work service instance uses its own consumerWorkServiceExecutor (as opposed to a shared one)
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createChannel
public Channel createChannel(int channelNumber) throws IOException
Public API - Create a new channel, using the specified channel number if possible.- Specified by:
createChannel
in interfaceConnection
- Parameters:
channelNumber
- the channel number to allocate- Returns:
- a new channel descriptor, or null if this channel number is already in use
- Throws:
IOException
- if an I/O problem is encountered
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createChannel
public Channel createChannel() throws IOException
Public API - Create a new channel, using an internally allocated channel number. If automatic connection recovery is enabled, the channel returned by this method will beRecoverable
.- Specified by:
createChannel
in interfaceConnection
- Returns:
- a new channel descriptor, or null if none is available
- Throws:
IOException
- if an I/O problem is encountered
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writeFrame
public void writeFrame(Frame f) throws IOException
Public API - sends a frame directly to the broker.- Throws:
IOException
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flush
public void flush() throws IOException
Public API - flush the output buffers- Throws:
IOException
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handleReadFrame
public boolean handleReadFrame(Frame frame)
private API
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isRunning
public boolean isRunning()
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hasBrokerInitiatedShutdown
public boolean hasBrokerInitiatedShutdown()
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handleHeartbeatFailure
public void handleHeartbeatFailure()
private API
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handleIoError
public void handleIoError(Throwable ex)
private API
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doFinalShutdown
public void doFinalShutdown()
private API
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addRecoveryCanBeginListener
public void addRecoveryCanBeginListener(RecoveryCanBeginListener fn)
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removeRecoveryCanBeginListener
public void removeRecoveryCanBeginListener(RecoveryCanBeginListener fn)
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processControlCommand
public boolean processControlCommand(Command c) throws IOException
Handles incoming control commands on channel zero.- Throws:
IOException
- See Also:
ChannelN.processAsync(com.rabbitmq.client.Command)
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handleConnectionClose
public void handleConnectionClose(Command closeCommand)
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shutdown
public ShutdownSignalException shutdown(Method reason, boolean initiatedByApplication, Throwable cause, boolean notifyRpc)
Protected API - causes all attached channels to terminate (shutdown) with a ShutdownSignal built from the argument, and stops this connection from accepting further work from the application.ShutdownListener
s for the connection are notified when the main loop terminates.- Parameters:
reason
- description of reason for the exceptioninitiatedByApplication
- true if caused by a client commandcause
- trigger exception which caused shutdownnotifyRpc
- true if outstanding rpc should be informed of shutdown- Returns:
- a shutdown signal built using the given arguments
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close
public void close() throws IOException
Public API - Close this connection and all its channels with theAMQP.REPLY_SUCCESS
close code and message 'OK'. Waits for all the close operations to complete.- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCloseable
- Specified by:
close
in interfaceConnection
- Throws:
IOException
- if an I/O problem is encountered
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close
public void close(int timeout) throws IOException
Public API - Close this connection and all its channels with theAMQP.REPLY_SUCCESS
close code and message 'OK'. This method behaves in a similar way asConnection.close()
, with the only difference that it waits with a provided timeout for all the close operations to complete. When timeout is reached the socket is forced to close.- Specified by:
close
in interfaceConnection
- Parameters:
timeout
- timeout (in milliseconds) for completing all the close-related operations, use -1 for infinity- Throws:
IOException
- if an I/O problem is encountered
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close
public void close(int closeCode, String closeMessage) throws IOException
Public API - Close this connection and all its channels. Waits for all the close operations to complete.- Specified by:
close
in interfaceConnection
- Parameters:
closeCode
- the close code (See under "Reply Codes" in the AMQP specification)closeMessage
- a message indicating the reason for closing the connection- Throws:
IOException
- if an I/O problem is encountered
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close
public void close(int closeCode, String closeMessage, int timeout) throws IOException
Public API - Close this connection and all its channels. Waits with the given timeout for all the close operations to complete. When timeout is reached the socket is forced to close.- Specified by:
close
in interfaceConnection
- Parameters:
closeCode
- the close code (See under "Reply Codes" in the AMQP specification)closeMessage
- a message indicating the reason for closing the connectiontimeout
- timeout (in milliseconds) for completing all the close-related operations, use -1 for infinity- Throws:
IOException
- if an I/O problem is encountered
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abort
public void abort()
Public API - Abort this connection and all its channels with theAMQP.REPLY_SUCCESS
close code and message 'OK'. Forces the connection to close. Any encountered exceptions in the close operations are silently discarded.- Specified by:
abort
in interfaceConnection
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abort
public void abort(int closeCode, String closeMessage)
Public API - Abort this connection and all its channels. Forces the connection to close and waits for all the close operations to complete. Any encountered exceptions in the close operations are silently discarded.- Specified by:
abort
in interfaceConnection
- Parameters:
closeCode
- the close code (See under "Reply Codes" in the AMQP specification)closeMessage
- a message indicating the reason for closing the connection
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abort
public void abort(int timeout)
Public API - Abort this connection and all its channels with theAMQP.REPLY_SUCCESS
close code and message 'OK'. This method behaves in a similar way asConnection.abort()
, with the only difference that it waits with a provided timeout for all the close operations to complete. When timeout is reached the socket is forced to close.- Specified by:
abort
in interfaceConnection
- Parameters:
timeout
- timeout (in milliseconds) for completing all the close-related operations, use -1 for infinity
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abort
public void abort(int closeCode, String closeMessage, int timeout)
Public API - Abort this connection and all its channels. Forces the connection to close and waits with the given timeout for all the close operations to complete. When timeout is reached the socket is forced to close. Any encountered exceptions in the close operations are silently discarded.- Specified by:
abort
in interfaceConnection
- Parameters:
closeCode
- the close code (See under "Reply Codes" in the AMQP specification)closeMessage
- a message indicating the reason for closing the connectiontimeout
- timeout (in milliseconds) for completing all the close-related operations, use -1 for infinity
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close
public void close(int closeCode, String closeMessage, boolean initiatedByApplication, Throwable cause) throws IOException
Protected API - Delegates tothe six-argument close method
, passing -1 for the timeout, and false for the abort flag.- Throws:
IOException
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close
public void close(int closeCode, String closeMessage, boolean initiatedByApplication, Throwable cause, int timeout, boolean abort) throws IOException
Protected API - Close this connection with the given code, message, source and timeout value for all the close operations to complete. Specifies if any encountered exceptions should be ignored.- Throws:
IOException
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addBlockedListener
public void addBlockedListener(BlockedListener listener)
Description copied from interface:Connection
Add aBlockedListener
.- Specified by:
addBlockedListener
in interfaceConnection
- Parameters:
listener
- the listener to add
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removeBlockedListener
public boolean removeBlockedListener(BlockedListener listener)
Description copied from interface:Connection
Remove aBlockedListener
.- Specified by:
removeBlockedListener
in interfaceConnection
- Parameters:
listener
- the listener to remove- Returns:
true
if the listener was found and removed,false
otherwise
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clearBlockedListeners
public void clearBlockedListeners()
Description copied from interface:Connection
Remove allBlockedListener
s.- Specified by:
clearBlockedListeners
in interfaceConnection
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getId
public String getId()
Public API - Returns a unique ID for this connection. This ID must be unique, otherwise some services like the metrics collector won't work properly. This ID doesn't have to be provided by the client, services that require it will be assigned automatically if not set.- Specified by:
getId
in interfaceConnection
- Returns:
- unique ID for this connection.
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setId
public void setId(String id)
Public API - Sets a unique ID for this connection. This ID must be unique, otherwise some services like the metrics collector won't work properly. This ID doesn't have to be provided by the client, services that require it will be assigned automatically if not set.- Specified by:
setId
in interfaceConnection
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getChannelRpcTimeout
public int getChannelRpcTimeout()
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willCheckRpcResponseType
public boolean willCheckRpcResponseType()
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getTrafficListener
public TrafficListener getTrafficListener()
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