UdpServer (reactor-netty 1.0.21)

java.lang.Object
- reactor.netty.transport.Transport<UdpServer,UdpServerConfig>
- - reactor.netty.udp.UdpServer

public abstract class UdpServer
extends Transport<UdpServer,UdpServerConfig>

A UdpServer allows building in a safe immutable way a UDP server that is materialized and connecting when bind() is ultimately called.

Example:

 
 UdpServer.create()
          .doOnBind(startMetrics)
          .doOnBound(startedMetrics)
          .doOnUnbind(stopMetrics)
          .host("127.0.0.1")
          .port(1234)
          .bind()
          .block()

Author:: Stephane Maldini, Violeta Georgieva

Constructor Summary

Constructors
Constructor and Description

UdpServer()

Constructors
Constructor and Description
`UdpServer()`

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`<A> UdpServer`	`attr(AttributeKey<A> key, A value)` Update the given attribute key or remove it if the value is null.
`abstract Mono<? extends Connection>`	`bind()` Binds the `UdpServer` and returns a `Mono` of `Connection`.
`UdpServer`	`bindAddress(Supplier<? extends SocketAddress> bindAddressSupplier)` Set a new local address to which this transport should bind on subscribe.
`Connection`	`bindNow()` Starts the server in a blocking fashion, and waits for it to finish initializing or the startup timeout expires (the startup timeout is `45` seconds).
`Connection`	`bindNow(Duration timeout)` Start the server in a blocking fashion, and wait for it to finish initializing or the provided startup timeout expires.
`static UdpServer`	`create()` Prepare a `UdpServer`
`UdpServer`	`doOnBind(Consumer<? super UdpServerConfig> doOnBind)` Set or add a callback called when `UdpServer` is about to start listening for incoming traffic.
`UdpServer`	`doOnBound(Consumer<? super Connection> doOnBound)` Set or add a callback called after `UdpServer` has been started.
`UdpServer`	`doOnUnbound(Consumer<? super Connection> doOnUnbound)` Set or add a callback called after `UdpServer` has been shutdown.
`UdpServer`	`handle(BiFunction<? super UdpInbound,? super UdpOutbound,? extends Publisher<Void>> handler)` Attach an IO handler to react on connected client
`UdpServer`	`host(String host)` The host to which this server should bind.
`UdpServer`	`metrics(boolean enable)` Whether to enable metrics to be collected and registered in Micrometer's `globalRegistry`.
`UdpServer`	`metrics(boolean enable, Supplier<? extends ChannelMetricsRecorder> recorder)` Specifies whether the metrics are enabled on the `Transport`.
`UdpServer`	`observe(ConnectionObserver observer)` Set or add the given `ConnectionObserver` to observe the connection state changes.
`<O> UdpServer`	`option(ChannelOption<O> key, O value)` Update the given option key or remove it if the value is null.
`UdpServer`	`port(int port)` The port to which this server should bind.
`UdpServer`	`runOn(EventLoopGroup eventLoopGroup)` Run IO loops on the given `EventLoopGroup`.
`UdpServer`	`runOn(LoopResources channelResources)` Run IO loops on a supplied `EventLoopGroup` from the `LoopResources` container.
`UdpServer`	`runOn(LoopResources loopResources, boolean preferNative)` Run IO loops on a supplied `EventLoopGroup` from the `LoopResources` container.
`UdpServer`	`runOn(LoopResources loopResources, InternetProtocolFamily family)` Run IO loops on a supplied `EventLoopGroup` from the `LoopResources` container.
`Mono<Void>`	`warmup()` Based on the actual configuration, returns a `Mono` that triggers: an initialization of the event loop group loads the necessary native libraries for the transport By default, when method is not used, the `bind operation` absorbs the extra time needed to load resources.
`UdpServer`	`wiretap(boolean enable)` Apply or remove a wire logger configuration using `Transport` category (logger), `DEBUG` logger level and `AdvancedByteBufFormat.HEX_DUMP` for `ByteBuf` format, which means both events and content will be logged and the content will be in hex format.
`UdpServer`	`wiretap(String category)` Apply a wire logger configuration using the specified category (logger), `DEBUG` logger level and `AdvancedByteBufFormat.HEX_DUMP` for `ByteBuf` format, which means both events and content will be logged and the content will be in hex format.
`UdpServer`	`wiretap(String category, LogLevel level)` Apply a wire logger configuration using the specified category (logger), logger level and `AdvancedByteBufFormat.HEX_DUMP` for `ByteBuf` format, which means both events and content will be logged and the content will be in hex format.

Methods inherited from class reactor.netty.transport.Transport
channelGroup, configuration, doOnChannelInit, duplicate, wiretap, wiretap

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - UdpServer
```
public UdpServer()
```
- Method Detail
  - create
```
public static UdpServer create()
```
    Prepare a UdpServer
    
    Returns:
    
    a UdpServer
  - attr
```
public final <A> UdpServer attr(AttributeKey<A> key,
                                @Nullable
                                A value)
```
    Description copied from class: Transport
    
    Update the given attribute key or remove it if the value is null.
    
    Overrides:
    
    attr in class Transport<UdpServer,UdpServerConfig>
    
    Type Parameters:
    
    A - the attribute type
    
    Parameters:
    
    key - the AttributeKey key
    
    value - the AttributeKey value
    
    Returns:
    
    a new Transport reference
  - bind
```
public abstract Mono<? extends Connection> bind()
```
    Binds the UdpServer and returns a Mono of Connection. If Mono is cancelled, the underlying binding will be aborted. Once the Connection has been emitted and is not necessary anymore, disposing the main server loop must be done by the user via DisposableChannel.dispose().
    
    Returns:
    
    a Mono of Connection
  - bindAddress
```
public final UdpServer bindAddress(Supplier<? extends SocketAddress> bindAddressSupplier)
```
    Description copied from class: Transport
    
    Set a new local address to which this transport should bind on subscribe.
    
    Overrides:
    
    bindAddress in class Transport<UdpServer,UdpServerConfig>
    
    Parameters:
    
    bindAddressSupplier - A supplier of the address to bind to.
    
    Returns:
    
    a new Transport
  - bindNow
```
public final Connection bindNow()
```
    Starts the server in a blocking fashion, and waits for it to finish initializing or the startup timeout expires (the startup timeout is 45 seconds). The returned Connection offers simple server API, including to DisposableChannel.disposeNow() shut it down in a blocking fashion.
    
    Returns:
    
    a Connection
  - bindNow
```
public final Connection bindNow(Duration timeout)
```
    Start the server in a blocking fashion, and wait for it to finish initializing or the provided startup timeout expires. The returned Connection offers simple server API, including to DisposableChannel.disposeNow() shut it down in a blocking fashion.
    
    Parameters:
    
    timeout - max startup timeout (resolution: ns)
    
    Returns:
    
    a Connection
  - doOnBind
```
public final UdpServer doOnBind(Consumer<? super UdpServerConfig> doOnBind)
```
    Set or add a callback called when UdpServer is about to start listening for incoming traffic.
    
    Parameters:
    
    doOnBind - a consumer observing connected events
    
    Returns:
    
    a new UdpServer reference
  - doOnBound
```
public final UdpServer doOnBound(Consumer<? super Connection> doOnBound)
```
    Set or add a callback called after UdpServer has been started.
    
    Parameters:
    
    doOnBound - a consumer observing connected events
    
    Returns:
    
    a new UdpServer reference
  - doOnUnbound
```
public final UdpServer doOnUnbound(Consumer<? super Connection> doOnUnbound)
```
    Set or add a callback called after UdpServer has been shutdown.
    
    Parameters:
    
    doOnUnbound - a consumer observing unbound events
    
    Returns:
    
    a new UdpServer reference
  - handle
```
public final UdpServer handle(BiFunction<? super UdpInbound,? super UdpOutbound,? extends Publisher<Void>> handler)
```
    Attach an IO handler to react on connected client
    
    Parameters:
    
    handler - an IO handler that can dispose underlying connection when Publisher terminates.
    
    Returns:
    
    a new UdpServer
  - host
```
public final UdpServer host(String host)
```
    The host to which this server should bind.
    
    Parameters:
    
    host - the host to bind to.
    
    Returns:
    
    a new UdpServer reference
  - metrics
```
public final UdpServer metrics(boolean enable)
```
    Description copied from class: Transport
    Whether to enable metrics to be collected and registered in Micrometer's globalRegistry. Applications can separately register their own filters. For example, to put an upper bound on the number of tags produced:
```
 MeterFilter filter = ... ;
 Metrics.globalRegistry.config().meterFilter(MeterFilter.maximumAllowableTags(prefix, 100, filter));
 
```
    By default this is not enabled.
    Overrides:
    
    metrics in class Transport<UdpServer,UdpServerConfig>
    
    Parameters:
    
    enable - true enables metrics collection; false disables it
    
    Returns:
    
    a new Transport reference
  - metrics
```
public final UdpServer metrics(boolean enable,
                               Supplier<? extends ChannelMetricsRecorder> recorder)
```
    Description copied from class: Transport
    
    Specifies whether the metrics are enabled on the Transport. All generated metrics are provided to the specified recorder which is only instantiated if metrics are being enabled (the instantiation is not lazy, but happens immediately, while configuring the Transport).
    
    Overrides:
    
    metrics in class Transport<UdpServer,UdpServerConfig>
    
    Parameters:
    
    enable - if true enables the metrics on the Transport.
    
    recorder - a supplier for the ChannelMetricsRecorder
    
    Returns:
    
    a new Transport reference
  - observe
```
public final UdpServer observe(ConnectionObserver observer)
```
    Description copied from class: Transport
    
    Set or add the given ConnectionObserver to observe the connection state changes.
    
    Overrides:
    
    observe in class Transport<UdpServer,UdpServerConfig>
    
    Parameters:
    
    observer - the ConnectionObserver to be set or add
    
    Returns:
    
    a new Transport reference
  - option
```
public final <O> UdpServer option(ChannelOption<O> key,
                                  @Nullable
                                  O value)
```
    Description copied from class: Transport
    
    Update the given option key or remove it if the value is null. Note: Setting ChannelOption.AUTO_READ option will be ignored. It is configured to be false.
    
    Overrides:
    
    option in class Transport<UdpServer,UdpServerConfig>
    
    Type Parameters:
    
    O - the option type
    
    Parameters:
    
    key - the ChannelOption key
    
    value - the ChannelOption value or null
    
    Returns:
    
    a new Transport reference
  - port
```
public final UdpServer port(int port)
```
    The port to which this server should bind.
    
    Parameters:
    
    port - The port to bind to.
    
    Returns:
    
    a new UdpServer reference
  - runOn
```
public final UdpServer runOn(EventLoopGroup eventLoopGroup)
```
    Description copied from class: Transport
    
    Run IO loops on the given EventLoopGroup.
    
    Overrides:
    
    runOn in class Transport<UdpServer,UdpServerConfig>
    
    Parameters:
    
    eventLoopGroup - an eventLoopGroup to share
    
    Returns:
    
    a new Transport reference
  - runOn
```
public final UdpServer runOn(LoopResources channelResources)
```
    Description copied from class: Transport
    
    Run IO loops on a supplied EventLoopGroup from the LoopResources container. Will prefer native (epoll/kqueue) implementation if available unless the environment property reactor.netty.native is set to false.
    
    Overrides:
    
    runOn in class Transport<UdpServer,UdpServerConfig>
    
    Parameters:
    
    channelResources - a LoopResources accepting native runtime expectation and returning an eventLoopGroup
    
    Returns:
    
    a new Transport reference
  - runOn
```
public final UdpServer runOn(LoopResources loopResources,
                             boolean preferNative)
```
    Run IO loops on a supplied EventLoopGroup from the LoopResources container.
    
    Overrides:
    
    runOn in class Transport<UdpServer,UdpServerConfig>
    
    Parameters:
    
    loopResources - a new loop resources
    
    preferNative - should prefer running on epoll, kqueue or similar instead of java NIO
    
    Returns:
    
    a new UdpServer reference
  - runOn
```
public final UdpServer runOn(LoopResources loopResources,
                             InternetProtocolFamily family)
```
    Run IO loops on a supplied EventLoopGroup from the LoopResources container.
    
    Parameters:
    
    loopResources - a new loop resources
    
    family - a specific InternetProtocolFamily to run with
    
    Returns:
    
    a new UdpServer reference
  - warmup
```
public final Mono<Void> warmup()
```
    Based on the actual configuration, returns a Mono that triggers:
    - an initialization of the event loop group
    - loads the necessary native libraries for the transport
    By default, when method is not used, the bind operation absorbs the extra time needed to load resources.
    Returns:
    
    a Mono representing the completion of the warmup
    
    Since:
    
    1.0.3
  - wiretap
```
public final UdpServer wiretap(boolean enable)
```
    Description copied from class: Transport
    
    Apply or remove a wire logger configuration using Transport category (logger), DEBUG logger level and AdvancedByteBufFormat.HEX_DUMP for ByteBuf format, which means both events and content will be logged and the content will be in hex format.
    
    Overrides:
    
    wiretap in class Transport<UdpServer,UdpServerConfig>
    
    Parameters:
    
    enable - specifies whether the wire logger configuration will be added to the pipeline
    
    Returns:
    
    a new Transport reference
  - wiretap
```
public final UdpServer wiretap(String category)
```
    Description copied from class: Transport
    
    Apply a wire logger configuration using the specified category (logger), DEBUG logger level and AdvancedByteBufFormat.HEX_DUMP for ByteBuf format, which means both events and content will be logged and the content will be in hex format.
    
    Overrides:
    
    wiretap in class Transport<UdpServer,UdpServerConfig>
    
    Parameters:
    
    category - the logger category
    
    Returns:
    
    a new Transport reference
  - wiretap
```
public final UdpServer wiretap(String category,
                               LogLevel level)
```
    Description copied from class: Transport
    
    Apply a wire logger configuration using the specified category (logger), logger level and AdvancedByteBufFormat.HEX_DUMP for ByteBuf format, which means both events and content will be logged and the content will be in hex format.
    
    Overrides:
    
    wiretap in class Transport<UdpServer,UdpServerConfig>
    
    Parameters:
    
    category - the logger category
    
    level - the logger level
    
    Returns:
    
    a new Transport reference

Class UdpServer

Constructor Summary

Method Summary

Methods inherited from class reactor.netty.transport.Transport

Methods inherited from class java.lang.Object

Constructor Detail

UdpServer

Method Detail

create

attr

bind

bindAddress

bindNow

bindNow

doOnBind

doOnBound

doOnUnbound

handle

host

metrics

metrics

observe

option

port

runOn

runOn

runOn

runOn

warmup

wiretap

wiretap

wiretap