ChannelPool (Netty API Reference (4.2.1.Final))

All Superinterfaces:

java.lang.AutoCloseable, java.io.Closeable

All Known Implementing Classes:

FixedChannelPool, SimpleChannelPool
```
public interface ChannelPool
extends java.io.Closeable
```
Allows to acquire and release Channel and so act as a pool of these.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Future<Channel>`	`acquire()`	Acquire a `Channel` from this `ChannelPool`.
`Future<Channel>`	`acquire(Promise<Channel> promise)`	Acquire a `Channel` from this `ChannelPool`.
`void`	`close()`
`Future<java.lang.Void>`	`release(Channel channel)`	Release a `Channel` back to this `ChannelPool`.
`Future<java.lang.Void>`	`release(Channel channel, Promise<java.lang.Void> promise)`	Release a `Channel` back to this `ChannelPool`.

- Method Detail
  - acquire
```
Future<Channel> acquire()
```
    Acquire a Channel from this ChannelPool. The returned Future is notified once the acquire is successful and failed otherwise. Its important that an acquired is always released to the pool again, even if the Channel is explicitly closed..
  - acquire
```
Future<Channel> acquire(Promise<Channel> promise)
```
    Acquire a Channel from this ChannelPool. The given Promise is notified once the acquire is successful and failed otherwise. Its important that an acquired is always released to the pool again, even if the Channel is explicitly closed..
  - release
```
Future<java.lang.Void> release(Channel channel)
```
    Release a Channel back to this ChannelPool. The returned Future is notified once the release is successful and failed otherwise. When failed the Channel will automatically closed.
  - release
```
Future<java.lang.Void> release(Channel channel,
                               Promise<java.lang.Void> promise)
```
    Release a Channel back to this ChannelPool. The given Promise is notified once the release is successful and failed otherwise. When failed the Channel will automatically closed.
  - close
```
void close()
```
    Specified by:
    
    close in interface java.lang.AutoCloseable
    
    Specified by:
    
    close in interface java.io.Closeable