TcpClient (reactor-netty 1.0.21)

java.lang.Object
- reactor.netty.transport.Transport<T,CONF>
- - reactor.netty.transport.ClientTransport<TcpClient,TcpClientConfig>
  - - reactor.netty.tcp.TcpClient

public abstract class TcpClient
extends ClientTransport<TcpClient,TcpClientConfig>

A TcpClient allows building in a safe immutable way a TCP client that is materialized and connecting when connect() is ultimately called.

Example:

 
 TcpClient.create()
          .doOnConnect(connectMetrics)
          .doOnConnected(connectedMetrics)
          .doOnDisconnected(disconnectedMetrics)
          .host("127.0.0.1")
          .port(1234)
          .secure()
          .connect()
          .block()

Author:: Stephane Maldini, Violeta Georgieva

Constructor Summary

Constructors
Constructor and Description

TcpClient()

Constructors
Constructor and Description
`TcpClient()`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`TcpClient`	`addressSupplier(Supplier<? extends SocketAddress> connectAddressSupplier)` Deprecated. Use `remoteAddress(Supplier)`. This method will be removed in version 1.1.0.
`<A> TcpClient`	`attr(AttributeKey<A> key, A value)` Update the given attribute key or remove it if the value is null.
`TcpClient`	`bindAddress(Supplier<? extends SocketAddress> bindAddressSupplier)` Set a new local address to which this transport should bind on subscribe.
`TcpClient`	`bootstrap(Function<? super Bootstrap,? extends Bootstrap> bootstrapMapper)` Deprecated. as of 0.9.10. Use the other methods exposed by `TcpClient` to achieve the same configurations. The method will be removed in version 1.1.0.
`Mono<? extends Connection>`	`connect()` Connect the `ClientTransport` and return a `Mono` of `Connection`.
`Connection`	`connectNow()` Block the `ClientTransport` and return a `Connection`.
`Connection`	`connectNow(Duration timeout)` Block the `ClientTransport` and return a `Connection`.
`static TcpClient`	`create()` Prepare a pooled `TcpClient`
`static TcpClient`	`create(ConnectionProvider provider)` Prepare a `TcpClient`
`TcpClient`	`doOnConnect(Consumer<? super TcpClientConfig> doOnConnect)` Set or add a callback called when `ClientTransport` is about to connect to the remote endpoint.
`TcpClient`	`doOnConnected(Consumer<? super Connection> doOnConnected)` Set or add a callback called after `Connection` has been connected.
`TcpClient`	`doOnDisconnected(Consumer<? super Connection> doOnDisconnected)` Set or add a callback called after `Connection` has been disconnected.
`TcpClient`	`handle(BiFunction<? super NettyInbound,? super NettyOutbound,? extends Publisher<Void>> handler)` Attach an IO handler to react on connected client
`TcpClient`	`host(String host)` The host to which this client should connect.
`TcpClient`	`metrics(boolean enable)` Whether to enable metrics to be collected and registered in Micrometer's `globalRegistry`.
`TcpClient`	`metrics(boolean enable, Supplier<? extends ChannelMetricsRecorder> recorder)` Specifies whether the metrics are enabled on the `Transport`.
`static TcpClient`	`newConnection()` Prepare a non pooled `TcpClient`
`TcpClient`	`noProxy()` Remove any previously applied Proxy configuration customization
`TcpClient`	`noSSL()` Remove any previously applied SSL configuration customization
`TcpClient`	`observe(ConnectionObserver observer)` Set or add the given `ConnectionObserver` to observe the connection state changes.
`<O> TcpClient`	`option(ChannelOption<O> key, O value)` Update the given option key or remove it if the value is null.
`TcpClient`	`port(int port)` The port to which this client should connect.
`TcpClient`	`proxy(Consumer<? super ProxyProvider.TypeSpec> proxyOptions)` Apply a proxy configuration
`TcpClient`	`remoteAddress(Supplier<? extends SocketAddress> remoteAddressSupplier)` The address to which this client should connect on each subscribe.
`TcpClient`	`resolver(AddressResolverGroup<?> resolver)` Assign an `AddressResolverGroup`.
`TcpClient`	`runOn(EventLoopGroup eventLoopGroup)` Run IO loops on the given `EventLoopGroup`.
`TcpClient`	`runOn(LoopResources channelResources)` Run IO loops on a supplied `EventLoopGroup` from the `LoopResources` container.
`TcpClient`	`runOn(LoopResources loopResources, boolean preferNative)` Run IO loops on a supplied `EventLoopGroup` from the `LoopResources` container.
`TcpClient`	`secure()` Enable default sslContext support.
`TcpClient`	`secure(Consumer<? super SslProvider.SslContextSpec> sslProviderBuilder)` Apply an SSL configuration customization via the passed builder.
`TcpClient`	`secure(SslProvider sslProvider)` Apply an SSL configuration via the passed `SslProvider`.
`Mono<Void>`	`warmup()` Based on the actual configuration, returns a `Mono` that triggers: an initialization of the event loop group an initialization of the host name resolver loads the necessary native libraries for the transport loads the necessary native libraries for the security if there is such By default, when method is not used, the `connect operation` absorbs the extra time needed to load resources.
`TcpClient`	`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.
`TcpClient`	`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.
`TcpClient`	`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.ClientTransport
doAfterResolve, doOnResolve, doOnResolveError, proxyWithSystemProperties, resolver

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
  - TcpClient
```
public TcpClient()
```
- Method Detail
  - create
```
public static TcpClient create()
```
    Prepare a pooled TcpClient
    
    Returns:
    
    a TcpClient
  - create
```
public static TcpClient create(ConnectionProvider provider)
```
    Prepare a TcpClient
    
    Parameters:
    
    provider - a ConnectionProvider to acquire connections
    
    Returns:
    
    a TcpClient
  - newConnection
```
public static TcpClient newConnection()
```
    Prepare a non pooled TcpClient
    
    Returns:
    
    a TcpClient
  - addressSupplier
```
@Deprecated
public final TcpClient addressSupplier(Supplier<? extends SocketAddress> connectAddressSupplier)
```
    Deprecated. Use remoteAddress(Supplier). This method will be removed in version 1.1.0.
    
    The address to which this client should connect for each subscribe.
    
    Parameters:
    
    connectAddressSupplier - A supplier of the address to connect to.
    
    Returns:
    
    a new TcpClient
  - attr
```
public <A> TcpClient 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<TcpClient,TcpClientConfig>
    
    Type Parameters:
    
    A - the attribute type
    
    Parameters:
    
    key - the AttributeKey key
    
    value - the AttributeKey value
    
    Returns:
    
    a new Transport reference
  - bindAddress
```
public TcpClient 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<TcpClient,TcpClientConfig>
    
    Parameters:
    
    bindAddressSupplier - A supplier of the address to bind to.
    
    Returns:
    
    a new Transport
  - bootstrap
```
@Deprecated
public final TcpClient bootstrap(Function<? super Bootstrap,? extends Bootstrap> bootstrapMapper)
```
    Deprecated. as of 0.9.10. Use the other methods exposed by TcpClient to achieve the same configurations. The method will be removed in version 1.1.0.
    Apply a Bootstrap mapping function to update TcpClient configuration and return an enriched TcpClient to use.
    Note: There isn't only one method that replaces this deprecated method. The configuration that can be done with this deprecated method, can also be done with the other methods exposed by TcpClient.
    
    Examples:
    
    Configuration via the deprecated '.bootstrap(...)' method
```
 
 TcpClient.bootstrap(b ->
     b.attr(...) // configures the channel attributes
      .group(...) // configures the event loop group
      .handler(...) // configures the channel handler
      .localAddress(...) // configures the bind (local) address
      .option(...) // configures the channel options
      .remoteAddress(...) // configures the remote address
      .resolver(...)) // configures the host names resolver
 
 
```
    Configuration via the other methods exposed by TcpClient
```
 
 TcpClient.attr(...) // configures the channel attributes
          .runOn(...) // configures the event loop group
          .doOnChannelInit(...) // configures the channel handler
          .bindAddress(...) // configures the bind (local) address
          .option(...) // configures the channel options
          .remoteAddress(...) // configures the remote address
          .resolver(...) // configures the host names resolver
 
 
```
    Wire logging in plain text
```
 
 TcpClient.wiretap("logger", LogLevel.DEBUG, AdvancedByteBufFormat.TEXTUAL)
 
 
```
    Parameters:
    
    bootstrapMapper - A Bootstrap mapping function to update TcpClient configuration and return an enriched TcpClient to use.
    
    Returns:
    
    a new TcpClient
  - connect
```
public Mono<? extends Connection> connect()
```
    Description copied from class: ClientTransport
    
    Connect the ClientTransport and return a Mono of Connection. If Mono is cancelled, the underlying connection will be aborted. Once the Connection has been emitted and is not necessary anymore, disposing must be done by the user via DisposableChannel.dispose().
    
    Overrides:
    
    connect in class ClientTransport<TcpClient,TcpClientConfig>
    
    Returns:
    
    a Mono of Connection
  - connectNow
```
public final Connection connectNow()
```
    Description copied from class: ClientTransport
    
    Block the ClientTransport and return a Connection. Disposing must be done by the user via DisposableChannel.dispose(). The max connection timeout is 45 seconds.
    
    Overrides:
    
    connectNow in class ClientTransport<TcpClient,TcpClientConfig>
    
    Returns:
    
    a Connection
  - connectNow
```
public final Connection connectNow(Duration timeout)
```
    Description copied from class: ClientTransport
    
    Block the ClientTransport and return a Connection. Disposing must be done by the user via DisposableChannel.dispose().
    
    Overrides:
    
    connectNow in class ClientTransport<TcpClient,TcpClientConfig>
    
    Parameters:
    
    timeout - connect timeout (resolution: ns)
    
    Returns:
    
    a Connection
  - doOnConnect
```
public TcpClient doOnConnect(Consumer<? super TcpClientConfig> doOnConnect)
```
    Description copied from class: ClientTransport
    
    Set or add a callback called when ClientTransport is about to connect to the remote endpoint.
    
    Overrides:
    
    doOnConnect in class ClientTransport<TcpClient,TcpClientConfig>
    
    Parameters:
    
    doOnConnect - a consumer observing connect events
    
    Returns:
    
    a new ClientTransport reference
  - doOnConnected
```
public TcpClient doOnConnected(Consumer<? super Connection> doOnConnected)
```
    Description copied from class: ClientTransport
    
    Set or add a callback called after Connection has been connected.
    
    Overrides:
    
    doOnConnected in class ClientTransport<TcpClient,TcpClientConfig>
    
    Parameters:
    
    doOnConnected - a consumer observing connected events
    
    Returns:
    
    a new ClientTransport reference
  - doOnDisconnected
```
public TcpClient doOnDisconnected(Consumer<? super Connection> doOnDisconnected)
```
    Description copied from class: ClientTransport
    
    Set or add a callback called after Connection has been disconnected.
    
    Overrides:
    
    doOnDisconnected in class ClientTransport<TcpClient,TcpClientConfig>
    
    Parameters:
    
    doOnDisconnected - a consumer observing disconnected events
    
    Returns:
    
    a new ClientTransport reference
  - handle
```
public TcpClient handle(BiFunction<? super NettyInbound,? super NettyOutbound,? 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 TcpClient
  - host
```
public TcpClient host(String host)
```
    Description copied from class: ClientTransport
    
    The host to which this client should connect.
    
    Overrides:
    
    host in class ClientTransport<TcpClient,TcpClientConfig>
    
    Parameters:
    
    host - the host to connect to
    
    Returns:
    
    a new ClientTransport reference
  - metrics
```
public TcpClient 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<TcpClient,TcpClientConfig>
    
    Parameters:
    
    enable - true enables metrics collection; false disables it
    
    Returns:
    
    a new Transport reference
  - metrics
```
public TcpClient 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<TcpClient,TcpClientConfig>
    
    Parameters:
    
    enable - if true enables the metrics on the Transport.
    
    recorder - a supplier for the ChannelMetricsRecorder
    
    Returns:
    
    a new Transport reference
  - noProxy
```
public TcpClient noProxy()
```
    Description copied from class: ClientTransport
    
    Remove any previously applied Proxy configuration customization
    
    Overrides:
    
    noProxy in class ClientTransport<TcpClient,TcpClientConfig>
    
    Returns:
    
    a new ClientTransport reference
  - noSSL
```
public TcpClient noSSL()
```
    Remove any previously applied SSL configuration customization
    
    Returns:
    
    a new TcpClient
  - observe
```
public TcpClient 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<TcpClient,TcpClientConfig>
    
    Parameters:
    
    observer - the ConnectionObserver to be set or add
    
    Returns:
    
    a new Transport reference
  - option
```
public <O> TcpClient 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<TcpClient,TcpClientConfig>
    
    Type Parameters:
    
    O - the option type
    
    Parameters:
    
    key - the ChannelOption key
    
    value - the ChannelOption value or null
    
    Returns:
    
    a new Transport reference
  - port
```
public TcpClient port(int port)
```
    Description copied from class: ClientTransport
    
    The port to which this client should connect.
    
    Overrides:
    
    port in class ClientTransport<TcpClient,TcpClientConfig>
    
    Parameters:
    
    port - the port to connect to
    
    Returns:
    
    a new ClientTransport reference
  - proxy
```
public TcpClient proxy(Consumer<? super ProxyProvider.TypeSpec> proxyOptions)
```
    Description copied from class: ClientTransport
    
    Apply a proxy configuration
    
    Overrides:
    
    proxy in class ClientTransport<TcpClient,TcpClientConfig>
    
    Parameters:
    
    proxyOptions - the proxy configuration callback
    
    Returns:
    
    a new ClientTransport reference
  - remoteAddress
```
public TcpClient remoteAddress(Supplier<? extends SocketAddress> remoteAddressSupplier)
```
    Description copied from class: ClientTransport
    
    The address to which this client should connect on each subscribe.
    
    Overrides:
    
    remoteAddress in class ClientTransport<TcpClient,TcpClientConfig>
    
    Parameters:
    
    remoteAddressSupplier - A supplier of the address to connect to.
    
    Returns:
    
    a new ClientTransport
  - resolver
```
public TcpClient resolver(AddressResolverGroup<?> resolver)
```
    Description copied from class: ClientTransport
    
    Assign an AddressResolverGroup.
    
    Overrides:
    
    resolver in class ClientTransport<TcpClient,TcpClientConfig>
    
    Parameters:
    
    resolver - the new AddressResolverGroup
    
    Returns:
    
    a new ClientTransport reference
  - runOn
```
public TcpClient runOn(EventLoopGroup eventLoopGroup)
```
    Description copied from class: Transport
    
    Run IO loops on the given EventLoopGroup.
    
    Overrides:
    
    runOn in class Transport<TcpClient,TcpClientConfig>
    
    Parameters:
    
    eventLoopGroup - an eventLoopGroup to share
    
    Returns:
    
    a new Transport reference
  - runOn
```
public TcpClient 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<TcpClient,TcpClientConfig>
    
    Parameters:
    
    channelResources - a LoopResources accepting native runtime expectation and returning an eventLoopGroup
    
    Returns:
    
    a new Transport reference
  - runOn
```
public TcpClient runOn(LoopResources loopResources,
                       boolean preferNative)
```
    Description copied from class: Transport
    
    Run IO loops on a supplied EventLoopGroup from the LoopResources container.
    
    Overrides:
    
    runOn in class ClientTransport<TcpClient,TcpClientConfig>
    
    Parameters:
    
    loopResources - a new loop resources
    
    preferNative - should prefer running on epoll, kqueue or similar instead of java NIO
    
    Returns:
    
    a new Transport reference
  - secure
```
public TcpClient secure()
```
    Enable default sslContext support. The default SslContext will be assigned to with a default value of 10 seconds handshake timeout unless the environment property reactor.netty.tcp.sslHandshakeTimeout is set.
    
    Returns:
    
    a new TcpClient
  - secure
```
public TcpClient secure(Consumer<? super SslProvider.SslContextSpec> sslProviderBuilder)
```
    Apply an SSL configuration customization via the passed builder. The builder will produce the SslContext to be passed to with a default value of 10 seconds handshake timeout unless the environment property reactor.netty.tcp.sslHandshakeTimeout is set.
    
    Parameters:
    
    sslProviderBuilder - builder callback for further customization of SslContext.
    
    Returns:
    
    a new TcpClient
  - secure
```
public TcpClient secure(SslProvider sslProvider)
```
    Apply an SSL configuration via the passed SslProvider.
    
    Parameters:
    
    sslProvider - The provider to set when configuring SSL
    
    Returns:
    
    a new TcpClient
  - warmup
```
public Mono<Void> warmup()
```
    Based on the actual configuration, returns a Mono that triggers:
    - an initialization of the event loop group
    - an initialization of the host name resolver
    - loads the necessary native libraries for the transport
    - loads the necessary native libraries for the security if there is such
    By default, when method is not used, the connect operation absorbs the extra time needed to load resources.
    Overrides:
    
    warmup in class ClientTransport<TcpClient,TcpClientConfig>
    
    Returns:
    
    a Mono representing the completion of the warmup
    
    Since:
    
    1.0.3
  - wiretap
```
public TcpClient 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<TcpClient,TcpClientConfig>
    
    Parameters:
    
    enable - specifies whether the wire logger configuration will be added to the pipeline
    
    Returns:
    
    a new Transport reference
  - wiretap
```
public TcpClient 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<TcpClient,TcpClientConfig>
    
    Parameters:
    
    category - the logger category
    
    Returns:
    
    a new Transport reference
  - wiretap
```
public TcpClient 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<TcpClient,TcpClientConfig>
    
    Parameters:
    
    category - the logger category
    
    level - the logger level
    
    Returns:
    
    a new Transport reference

Class TcpClient

Constructor Summary

Method Summary

Methods inherited from class reactor.netty.transport.ClientTransport

Methods inherited from class reactor.netty.transport.Transport

Methods inherited from class java.lang.Object

Constructor Detail

TcpClient

Method Detail

create

create

newConnection

addressSupplier

attr

bindAddress

bootstrap

connect

connectNow

connectNow

doOnConnect

doOnConnected

doOnDisconnected

handle

host

metrics

metrics

noProxy

noSSL

observe

option

port

proxy

remoteAddress

resolver

runOn

runOn

runOn

secure

secure

secure

warmup

wiretap

wiretap

wiretap