Package org.apache.activemq.artemis.spi.core.remoting

## Interface Connection

-     public interface Connection

  The connection used by a channel to write data to.

- - ### Method Summary

    All Methods Instance Methods Abstract Methods Default Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `default boolean` | `blockUntilWritable​(long timeout, java.util.concurrent.TimeUnit timeUnit)` | Causes the current thread to wait until the connection is writable unless the specified waiting time elapses.
    `void` | `checkFlushBatchBuffer()` | Called periodically to flush any data in the batch buffer
    `void` | `close()` | Closes the connection.
    `org.apache.activemq.artemis.api.core.ActiveMQBuffer` | `createTransportBuffer​(int size)` | Create a new ActiveMQBuffer of the given size.
    `void` | `fireReady​(boolean ready)` |
    `default void` | `flush()` | Request to flush any previous written buffers into the wire.
    `void` | `forceClose()` | This should close the internal channel without calling any listeners.
    `TransportConfiguration` | `getConnectorConfig()` | Generates a `TransportConfiguration` to be used to connect to the same target this is connected to.
    `org.apache.activemq.artemis.core.security.ActiveMQPrincipal` | `getDefaultActiveMQPrincipal()` |
    `java.lang.Object` | `getID()` | returns the unique id of this wire.
    `java.lang.String` | `getLocalAddress()` | Returns a string representation of the local address this connection is connected to.
    `RemotingConnection` | `getProtocolConnection()` |
    `default java.lang.String` | `getRedirectTo()` |
    `java.lang.String` | `getRemoteAddress()` | Returns a string representation of the remote address this connection is connected to.
    `default java.lang.String` | `getSNIHostName()` |
    `boolean` | `isDirectDeliver()` |
    `boolean` | `isOpen()` |
    `boolean` | `isSameTarget​(TransportConfiguration... configs)` |
    `boolean` | `isUsingProtocolHandling()` | the InVM Connection has some special handling as it doesn't use Netty ProtocolChannel we will use this method Instead of using instanceof
    `boolean` | `isWritable​(ReadyListener listener)` |
    `void` | `setAutoRead​(boolean autoRead)` | This will disable reading from the channel.
    `void` | `setProtocolConnection​(RemotingConnection connection)` |
    `void` | `write​(org.apache.activemq.artemis.api.core.ActiveMQBuffer buffer)` | writes the buffer to the connection with no flushing or batching
    `void` | `write​(org.apache.activemq.artemis.api.core.ActiveMQBuffer buffer, boolean requestFlush)` | writes the buffer to the connection and if flush is true request to flush the buffer (and any previous un-flushed ones) into the wire.
    `void` | `write​(org.apache.activemq.artemis.api.core.ActiveMQBuffer buffer, boolean flush, boolean batched)` | writes the buffer to the connection and if flush is true returns only when the buffer has been physically written to the connection.
    `void` | `write​(org.apache.activemq.artemis.api.core.ActiveMQBuffer buffer, boolean flush, boolean batched, io.netty.channel.ChannelFutureListener futureListener)` | writes the buffer to the connection and if flush is true returns only when the buffer has been physically written to the connection.

- - ### Method Detail

    - #### createTransportBuffer

          org.apache.activemq.artemis.api.core.ActiveMQBuffer createTransportBuffer​(int size)

      Create a new ActiveMQBuffer of the given size.
      Parameters:
        `size` - the size of buffer to create
      Returns:
        the new buffer.

    - #### getProtocolConnection

          RemotingConnection getProtocolConnection()

    - #### setProtocolConnection

          void setProtocolConnection​(RemotingConnection connection)

    - #### isWritable

          boolean isWritable​(ReadyListener listener)

    - #### isOpen

          boolean isOpen()

    - #### blockUntilWritable

          default boolean blockUntilWritable​(long timeout,
                                             java.util.concurrent.TimeUnit timeUnit)

      Causes the current thread to wait until the connection is writable unless the specified waiting time elapses. The available capacity of the connection could change concurrently hence this method is suitable to perform precise flow-control only in a single writer case, while its precision decrease inversely proportional with the rate and the number of concurrent writers. If the current thread is not allowed to block the timeout will be ignored dependently on the connection type.
      Parameters:
        `timeout` - the maximum time to wait
        `timeUnit` - the time unit of the timeout argument
      Returns:
        `true` if the connection is writable, `false` otherwise
      Throws:
        `java.lang.IllegalStateException` - if the connection is closed

    - #### fireReady

          void fireReady​(boolean ready)

    - #### setAutoRead

          void setAutoRead​(boolean autoRead)

      This will disable reading from the channel. This is basically the same as blocking the reading.

    - #### getID

          java.lang.Object getID()

      returns the unique id of this wire.
      Returns:
        the id

    - #### write

          void write​(org.apache.activemq.artemis.api.core.ActiveMQBuffer buffer,
                     boolean requestFlush)

      writes the buffer to the connection and if flush is true request to flush the buffer (and any previous un-flushed ones) into the wire.
      Parameters:
        `buffer` - the buffer to write
        `requestFlush` - whether to request flush onto the wire

    - #### flush

          default void flush()

      Request to flush any previous written buffers into the wire.

    - #### write

          void write​(org.apache.activemq.artemis.api.core.ActiveMQBuffer buffer,
                     boolean flush,
                     boolean batched)

      writes the buffer to the connection and if flush is true returns only when the buffer has been physically written to the connection.
      Parameters:
        `buffer` - the buffer to write
        `flush` - whether to flush the buffers onto the wire
        `batched` - whether the packet is allowed to batched for better performance

    - #### write

          void write​(org.apache.activemq.artemis.api.core.ActiveMQBuffer buffer,
                     boolean flush,
                     boolean batched,
                     io.netty.channel.ChannelFutureListener futureListener)

      writes the buffer to the connection and if flush is true returns only when the buffer has been physically written to the connection.
      Parameters:
        `buffer` - the buffer to write
        `flush` - whether to flush the buffers onto the wire
        `batched` - whether the packet is allowed to batched for better performance

    - #### write

          void write​(org.apache.activemq.artemis.api.core.ActiveMQBuffer buffer)

      writes the buffer to the connection with no flushing or batching
      Parameters:
        `buffer` - the buffer to write

    - #### forceClose

          void forceClose()

      This should close the internal channel without calling any listeners. This is to avoid a situation where the broker is busy writing on an internal thread. This should close the socket releasing any pending threads.

    - #### close

          void close()

      Closes the connection.

    - #### getRemoteAddress

          java.lang.String getRemoteAddress()

      Returns a string representation of the remote address this connection is connected to.
      Returns:
        the remote address

    - #### getLocalAddress

          java.lang.String getLocalAddress()

      Returns a string representation of the local address this connection is connected to. This is useful when the server is configured at 0.0.0.0 (or multiple IPs). This will give you the actual IP that's being used.
      Returns:
        the local address

    - #### checkFlushBatchBuffer

          void checkFlushBatchBuffer()

      Called periodically to flush any data in the batch buffer

    - #### getConnectorConfig

          TransportConfiguration getConnectorConfig()

      Generates a `TransportConfiguration` to be used to connect to the same target this is connected to.
      Returns:
        TransportConfiguration

    - #### isDirectDeliver

          boolean isDirectDeliver()

    - #### getDefaultActiveMQPrincipal

          org.apache.activemq.artemis.core.security.ActiveMQPrincipal getDefaultActiveMQPrincipal()

    - #### isUsingProtocolHandling

          boolean isUsingProtocolHandling()

      the InVM Connection has some special handling as it doesn't use Netty ProtocolChannel we will use this method Instead of using instanceof
      Returns:

    - #### isSameTarget

          boolean isSameTarget​(TransportConfiguration... configs)

    - #### getSNIHostName

          default java.lang.String getSNIHostName()

    - #### getRedirectTo

          default java.lang.String getRedirectTo()