Options (XNIO API 3.5.0.CR1 API)

java.lang.Object
- org.xnio.Options

public final class Options
extends Object

Common channel options.

Field Summary

Fields
Modifier and Type	Field and Description
`static Option<Boolean>`	`ALLOW_BLOCKING` Enable or disable blocking I/O for a newly created channel thread.
`static Option<Integer>`	`BACKLOG` Configure a server with the specified backlog.
`static Option<Integer>`	`BALANCING_CONNECTIONS` The number of connections to create per connection-balancing token, if connection-balancing is enabled.
`static Option<Integer>`	`BALANCING_TOKENS` The number of balancing tokens, if connection-balancing is enabled.
`static Option<Boolean>`	`BROADCAST` Enable broadcast support for IP datagram sockets.
`static Option<Boolean>`	`CLOSE_ABORT` Configure a TCP socket to send an `RST` packet on close.
`static Option<Integer>`	`COMPRESSION_LEVEL` The compression level to apply for compressing streams and channels.
`static Option<CompressionType>`	`COMPRESSION_TYPE` The compression type to apply for compressing streams and channels.
`static Option<Integer>`	`CONNECTION_HIGH_WATER` The high water mark for a server's connections.
`static Option<Integer>`	`CONNECTION_LOW_WATER` The low water mark for a server's connections.
`static Option<Boolean>`	`CORK` Specify that output should be buffered.
`static Option<FileAccess>`	`FILE_ACCESS` The file access mode to use when opening a file.
`static Option<Boolean>`	`FILE_APPEND` A flag which indicates that opened files should be appended to.
`static Option<Boolean>`	`FILE_CREATE` A flag which indicates that a file should be created if it does not exist (`true` by default for writing files, `false` by default for reading files).
`static Option<Integer>`	`IP_TRAFFIC_CLASS` Set the IP traffic class/type-of-service for the channel.
`static Option<Boolean>`	`KEEP_ALIVE` Configure a channel to send TCP keep-alive messages in an implementation-dependent manner.
`static Option<Integer>`	`MAX_INBOUND_MESSAGE_SIZE` The maximum inbound message size.
`static Option<Integer>`	`MAX_OUTBOUND_MESSAGE_SIZE` The maximum outbound message size.
`static Option<Boolean>`	`MULTICAST` Enable multicast support for a socket.
`static Option<Integer>`	`MULTICAST_TTL` Set the multicast time-to-live field for datagram sockets.
`static Option<Integer>`	`READ_TIMEOUT` Configure a read timeout for a socket, in milliseconds.
`static Option<Integer>`	`RECEIVE_BUFFER` The receive buffer size.
`static Option<Boolean>`	`REUSE_ADDRESSES` Configure an IP socket to reuse addresses.
`static Option<Sequence<String>>`	`SASL_DISALLOWED_MECHANISMS` A list of disallowed SASL mechanisms.
`static Option<Sequence<String>>`	`SASL_MECHANISMS` A list of SASL mechanisms, in decreasing order of preference.
`static Option<Boolean>`	`SASL_POLICY_FORWARD_SECRECY` Specify whether SASL mechanisms which implement forward secrecy between sessions are required.
`static Option<Boolean>`	`SASL_POLICY_NOACTIVE` Specify whether SASL mechanisms which are susceptible to active (non-dictionary) attacks are permitted.
`static Option<Boolean>`	`SASL_POLICY_NOANONYMOUS` Specify whether SASL mechanisms which accept anonymous logins are permitted.
`static Option<Boolean>`	`SASL_POLICY_NODICTIONARY` Specify whether SASL mechanisms which are susceptible to passive dictionary attacks are permitted.
`static Option<Boolean>`	`SASL_POLICY_NOPLAINTEXT` Specify whether SASL mechanisms which are susceptible to simple plain passive attacks are permitted.
`static Option<Boolean>`	`SASL_POLICY_PASS_CREDENTIALS` Specify whether SASL mechanisms which pass client credentials are required.
`static Option<Sequence<Property>>`	`SASL_PROPERTIES` A list of provider specific SASL properties.
`static Option<Sequence<SaslQop>>`	`SASL_QOP` Specify the SASL quality-of-protection to use.
`static Option<Boolean>`	`SASL_REUSE` Specify whether SASL mechanisms should attempt to reuse authenticated session information.
`static Option<Boolean>`	`SASL_SERVER_AUTH` Specify whether the SASL server must authenticate to the client.
`static Option<SaslStrength>`	`SASL_STRENGTH` Specify the SASL cipher strength to use.
`static Option<Boolean>`	`SECURE` Determine whether the channel is encrypted, or employs some other level of security.
`static Option<Integer>`	`SEND_BUFFER` The send buffer size.
`static Option<Boolean>`	`SPLIT_READ_WRITE_THREADS` Specify whether read and write operations should be split among separate threads.
`static Option<Integer>`	`SSL_APPLICATION_BUFFER_REGION_SIZE` The size of the allocation region to use for SSL application buffers.
`static Option<Integer>`	`SSL_APPLICATION_BUFFER_SIZE` The application buffer size for SSL.
`static Option<SslClientAuthMode>`	`SSL_CLIENT_AUTH_MODE` Specify the SSL client authentication mode.
`static Option<Integer>`	`SSL_CLIENT_SESSION_CACHE_SIZE` The size of the SSL client session cache.
`static Option<Integer>`	`SSL_CLIENT_SESSION_TIMEOUT` The SSL client session timeout (in seconds).
`static Option<Boolean>`	`SSL_ENABLE_SESSION_CREATION` Enable or disable session creation for an SSL connection.
`static Option<Boolean>`	`SSL_ENABLED` Specify whether SSL should be enabled.
`static Option<Sequence<String>>`	`SSL_ENABLED_CIPHER_SUITES` Specify the cipher suites for an SSL/TLS session.
`static Option<Sequence<String>>`	`SSL_ENABLED_PROTOCOLS` Specify the enabled protocols for an SSL/TLS session.
`static Option<Sequence<Class<? extends KeyManager>>>`	`SSL_JSSE_KEY_MANAGER_CLASSES` The possible key manager classes to use for a JSSE SSL context.
`static Option<Sequence<Class<? extends TrustManager>>>`	`SSL_JSSE_TRUST_MANAGER_CLASSES` The possible trust store classes to use for a JSSE SSL context.
`static Option<Boolean>`	`SSL_NON_BLOCKING_KEY_MANAGER` Hint to the SSL engine that the key manager implementation(s) is/are non-blocking, so they can be executed in the I/O thread, possibly improving performance by decreasing latency.
`static Option<Boolean>`	`SSL_NON_BLOCKING_TRUST_MANAGER` Hint to the SSL engine that the trust manager implementation(s) is/are non-blocking, so they can be executed in the I/O thread, possibly improving performance by decreasing latency.
`static Option<Integer>`	`SSL_PACKET_BUFFER_REGION_SIZE` The size of the allocation region to use for SSL packet buffers.
`static Option<Integer>`	`SSL_PACKET_BUFFER_SIZE` The packet buffer size for SSL.
`static Option<String>`	`SSL_PEER_HOST_NAME` Specify the (non-authoritative) name of the peer host to use for the purposes of session reuse, as well as for the use of certain cipher suites (such as Kerberos).
`static Option<Integer>`	`SSL_PEER_PORT` Specify the (non-authoritative) port number of the peer port number to use for the purposes of session reuse, as well as for the use of certain cipher suites.
`static Option<String>`	`SSL_PROTOCOL` Specify the protocol name for an SSL context.
`static Option<String>`	`SSL_PROVIDER` Specify the requested provider for an SSL/TLS session.
`static Option<OptionMap>`	`SSL_RNG_OPTIONS` The configuration of a secure RNG for SSL usage.
`static Option<Integer>`	`SSL_SERVER_SESSION_CACHE_SIZE` The size of the SSL server session cache.
`static Option<Integer>`	`SSL_SERVER_SESSION_TIMEOUT` The SSL server session timeout (in seconds).
`static Option<Boolean>`	`SSL_STARTTLS` Specify whether to use STARTTLS mode (in which a connection starts clear and switches to TLS on demand).
`static Option<Sequence<String>>`	`SSL_SUPPORTED_CIPHER_SUITES` Get the supported cipher suites for an SSL/TLS session.
`static Option<Sequence<String>>`	`SSL_SUPPORTED_PROTOCOLS` Get the supported protocols for an SSL/TLS session.
`static Option<Boolean>`	`SSL_USE_CLIENT_MODE` Specify whether SSL conversations should be in client or server mode.
`static Option<Long>`	`STACK_SIZE` The stack size (in bytes) to attempt to use for worker threads.
`static Option<Boolean>`	`TCP_NODELAY` Configure a TCP socket to disable Nagle's algorithm.
`static Option<Boolean>`	`TCP_OOB_INLINE` Configure a TCP socket to receive out-of-band data alongside regular data.
`static Option<Boolean>`	`THREAD_DAEMON` Specify whether worker threads should be daemon threads.
`static Option<Integer>`	`THREAD_PRIORITY` The thread priority for newly created worker threads.
`static Option<Boolean>`	`USE_DIRECT_BUFFERS` Specify whether direct buffers should be used for socket communications.
`static Option<Integer>`	`WATCHER_POLL_INTERVAL` The poll interval for poll based file system watchers.
`static Option<Integer>`	`WORKER_ACCEPT_THREADS` Deprecated. This option is now ignored. All I/O threads are used for accept, except in the case of split read/write threads, in which case only read or write threads will be used as determined by `WORKER_ESTABLISH_WRITING`.
`static Option<Boolean>`	`WORKER_ESTABLISH_WRITING` Specify whether a server, acceptor, or connector should be attached to write threads.
`static Option<Integer>`	`WORKER_IO_THREADS` Specify the number of I/O threads to create for the worker.
`static Option<String>`	`WORKER_NAME` The name to use for a newly created worker.
`static Option<Integer>`	`WORKER_READ_THREADS` Specify the number of I/O threads to devote to reading for split thread channels.
`static Option<Integer>`	`WORKER_TASK_CORE_THREADS` Specify the number of "core" threads for the worker task thread pool.
`static Option<Integer>`	`WORKER_TASK_KEEPALIVE` Specify the number of milliseconds to keep non-core task threads alive.
`static Option<Integer>`	`WORKER_TASK_LIMIT` Specify the maximum number of worker tasks to allow before rejecting.
`static Option<Integer>`	`WORKER_TASK_MAX_THREADS` Specify the maximum number of threads for the worker task thread pool.
`static Option<Integer>`	`WORKER_WRITE_THREADS` Specify the number of I/O threads to devote to writing for split thread channels.
`static Option<Integer>`	`WRITE_TIMEOUT` Configure a write timeout for a socket, in milliseconds.

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

- Field Detail
  - ALLOW_BLOCKING
```
public static final Option<Boolean> ALLOW_BLOCKING
```
    Enable or disable blocking I/O for a newly created channel thread.
  - MULTICAST
```
public static final Option<Boolean> MULTICAST
```
    Enable multicast support for a socket. The value type for this option is boolean. Note that some implementations may add overhead when multicast sockets are in use.
  - BROADCAST
```
public static final Option<Boolean> BROADCAST
```
    Enable broadcast support for IP datagram sockets. The value type for this option is boolean. If you intend to send datagrams to a broadcast address, this option must be enabled.
  - CLOSE_ABORT
```
public static final Option<Boolean> CLOSE_ABORT
```
    Configure a TCP socket to send an RST packet on close. The value type for this option is boolean.
  - RECEIVE_BUFFER
```
public static final Option<Integer> RECEIVE_BUFFER
```
    The receive buffer size. The value type for this option is int. This may be used by an XNIO provider directly, or it may be passed to the underlying operating system, depending on the channel type. Buffer sizes must always be greater than 0. Note that this value is just a hint; if the application needs to know what value was actually stored for this option, it must call getOption(Options.RECEIVE_BUFFER) on the channel to verify. On most operating systems, the receive buffer size may not be changed on a socket after it is connected; in these cases, calling setOption(Options.RECEIVE_BUFFER, val) will return null.
  - REUSE_ADDRESSES
```
public static final Option<Boolean> REUSE_ADDRESSES
```
    Configure an IP socket to reuse addresses. The value type for this option is boolean.
  - SEND_BUFFER
```
public static final Option<Integer> SEND_BUFFER
```
    The send buffer size. The value type for this option is int. This may be used by an XNIO provider directly, or it may be passed to the underlying operating system, depending on the channel type. Buffer sizes must always be greater than 0. Note that this value is just a hint; if the application needs to know what value was actually stored for this option, it must call getOption(Options.SEND_BUFFER) on the channel to verify.
  - TCP_NODELAY
```
public static final Option<Boolean> TCP_NODELAY
```
    Configure a TCP socket to disable Nagle's algorithm. The value type for this option is boolean.
  - MULTICAST_TTL
```
public static final Option<Integer> MULTICAST_TTL
```
    Set the multicast time-to-live field for datagram sockets. The value type for this option is int.
  - IP_TRAFFIC_CLASS
```
public static final Option<Integer> IP_TRAFFIC_CLASS
```
    Set the IP traffic class/type-of-service for the channel. The value type for this option is int.
  - TCP_OOB_INLINE
```
public static final Option<Boolean> TCP_OOB_INLINE
```
    Configure a TCP socket to receive out-of-band data alongside regular data. The value type for this option is boolean.
  - KEEP_ALIVE
```
public static final Option<Boolean> KEEP_ALIVE
```
    Configure a channel to send TCP keep-alive messages in an implementation-dependent manner. The value type for this option is boolean.
  - BACKLOG
```
public static final Option<Integer> BACKLOG
```
    Configure a server with the specified backlog. The value type for this option is int.
  - READ_TIMEOUT
```
public static final Option<Integer> READ_TIMEOUT
```
    Configure a read timeout for a socket, in milliseconds. If the given amount of time elapses without a successful read taking place, the socket's next read will throw a ReadTimeoutException.
  - WRITE_TIMEOUT
```
public static final Option<Integer> WRITE_TIMEOUT
```
    Configure a write timeout for a socket, in milliseconds. If the given amount of time elapses without a successful write taking place, the socket's next write will throw a WriteTimeoutException.
  - MAX_INBOUND_MESSAGE_SIZE
```
public static final Option<Integer> MAX_INBOUND_MESSAGE_SIZE
```
    The maximum inbound message size.
    
    Since:
    
    2.0
  - MAX_OUTBOUND_MESSAGE_SIZE
```
public static final Option<Integer> MAX_OUTBOUND_MESSAGE_SIZE
```
    The maximum outbound message size.
    
    Since:
    
    2.0
  - SSL_ENABLED
```
public static final Option<Boolean> SSL_ENABLED
```
    Specify whether SSL should be enabled. If specified in conjunction with SSL_STARTTLS then SSL will not be negotiated until SslChannel.startHandshake() or SslConnection.startHandshake() is called.
    
    Since:
    
    3.0
  - SSL_CLIENT_AUTH_MODE
```
public static final Option<SslClientAuthMode> SSL_CLIENT_AUTH_MODE
```
    Specify the SSL client authentication mode.
    
    Since:
    
    2.0
  - SSL_ENABLED_CIPHER_SUITES
```
public static final Option<Sequence<String>> SSL_ENABLED_CIPHER_SUITES
```
    Specify the cipher suites for an SSL/TLS session. If a listed cipher suites is not supported, it is ignored; however, if you specify a list of cipher suites, none of which are supported, an exception will be thrown.
    
    Since:
    
    2.0
  - SSL_SUPPORTED_CIPHER_SUITES
```
public static final Option<Sequence<String>> SSL_SUPPORTED_CIPHER_SUITES
```
    Get the supported cipher suites for an SSL/TLS session. This option is generally read-only.
    
    Since:
    
    2.0
  - SSL_ENABLED_PROTOCOLS
```
public static final Option<Sequence<String>> SSL_ENABLED_PROTOCOLS
```
    Specify the enabled protocols for an SSL/TLS session. If a listed protocol is not supported, it is ignored; however, if you specify a list of protocols, none of which are supported, an exception will be thrown.
    
    Since:
    
    2.0
  - SSL_SUPPORTED_PROTOCOLS
```
public static final Option<Sequence<String>> SSL_SUPPORTED_PROTOCOLS
```
    Get the supported protocols for an SSL/TLS session. This option is generally read-only.
    
    Since:
    
    2.0
  - SSL_PROVIDER
```
public static final Option<String> SSL_PROVIDER
```
    Specify the requested provider for an SSL/TLS session.
    
    Since:
    
    2.0
  - SSL_PROTOCOL
```
public static final Option<String> SSL_PROTOCOL
```
    Specify the protocol name for an SSL context.
    
    Since:
    
    2.1
  - SSL_ENABLE_SESSION_CREATION
```
public static final Option<Boolean> SSL_ENABLE_SESSION_CREATION
```
    Enable or disable session creation for an SSL connection. Defaults to true to enable session creation.
    
    Since:
    
    2.0
  - SSL_USE_CLIENT_MODE
```
public static final Option<Boolean> SSL_USE_CLIENT_MODE
```
    Specify whether SSL conversations should be in client or server mode. Defaults to false (use server mode). If set to true, the client and server side swap negotiation roles.
    
    Since:
    
    2.0
  - SSL_CLIENT_SESSION_CACHE_SIZE
```
public static final Option<Integer> SSL_CLIENT_SESSION_CACHE_SIZE
```
    The size of the SSL client session cache.
    
    Since:
    
    3.0
  - SSL_CLIENT_SESSION_TIMEOUT
```
public static final Option<Integer> SSL_CLIENT_SESSION_TIMEOUT
```
    The SSL client session timeout (in seconds).
    
    Since:
    
    3.0
  - SSL_SERVER_SESSION_CACHE_SIZE
```
public static final Option<Integer> SSL_SERVER_SESSION_CACHE_SIZE
```
    The size of the SSL server session cache.
    
    Since:
    
    3.0
  - SSL_SERVER_SESSION_TIMEOUT
```
public static final Option<Integer> SSL_SERVER_SESSION_TIMEOUT
```
    The SSL server session timeout (in seconds).
    
    Since:
    
    3.0
  - SSL_JSSE_KEY_MANAGER_CLASSES
```
public static final Option<Sequence<Class<? extends KeyManager>>> SSL_JSSE_KEY_MANAGER_CLASSES
```
    The possible key manager classes to use for a JSSE SSL context.
    
    Since:
    
    3.0
  - SSL_JSSE_TRUST_MANAGER_CLASSES
```
public static final Option<Sequence<Class<? extends TrustManager>>> SSL_JSSE_TRUST_MANAGER_CLASSES
```
    The possible trust store classes to use for a JSSE SSL context.
    
    Since:
    
    3.0
  - SSL_RNG_OPTIONS
```
public static final Option<OptionMap> SSL_RNG_OPTIONS
```
    The configuration of a secure RNG for SSL usage.
    
    Since:
    
    3.0
  - SSL_PACKET_BUFFER_SIZE
```
public static final Option<Integer> SSL_PACKET_BUFFER_SIZE
```
    The packet buffer size for SSL.
    
    Since:
    
    3.0
  - SSL_APPLICATION_BUFFER_SIZE
```
public static final Option<Integer> SSL_APPLICATION_BUFFER_SIZE
```
    The application buffer size for SSL.
    
    Since:
    
    3.0
  - SSL_PACKET_BUFFER_REGION_SIZE
```
public static final Option<Integer> SSL_PACKET_BUFFER_REGION_SIZE
```
    The size of the allocation region to use for SSL packet buffers.
    
    Since:
    
    3.0
  - SSL_APPLICATION_BUFFER_REGION_SIZE
```
public static final Option<Integer> SSL_APPLICATION_BUFFER_REGION_SIZE
```
    The size of the allocation region to use for SSL application buffers.
    
    Since:
    
    3.0
  - SSL_STARTTLS
```
public static final Option<Boolean> SSL_STARTTLS
```
    Specify whether to use STARTTLS mode (in which a connection starts clear and switches to TLS on demand).
    
    Since:
    
    3.0
  - SSL_PEER_HOST_NAME
```
public static final Option<String> SSL_PEER_HOST_NAME
```
    Specify the (non-authoritative) name of the peer host to use for the purposes of session reuse, as well as for the use of certain cipher suites (such as Kerberos). If not given, defaults to the host name of the socket address of the peer.
  - SSL_PEER_PORT
```
public static final Option<Integer> SSL_PEER_PORT
```
    Specify the (non-authoritative) port number of the peer port number to use for the purposes of session reuse, as well as for the use of certain cipher suites. If not given, defaults to the port number of the socket address of the peer.
  - SSL_NON_BLOCKING_KEY_MANAGER
```
public static final Option<Boolean> SSL_NON_BLOCKING_KEY_MANAGER
```
    Hint to the SSL engine that the key manager implementation(s) is/are non-blocking, so they can be executed in the I/O thread, possibly improving performance by decreasing latency.
  - SSL_NON_BLOCKING_TRUST_MANAGER
```
public static final Option<Boolean> SSL_NON_BLOCKING_TRUST_MANAGER
```
    Hint to the SSL engine that the trust manager implementation(s) is/are non-blocking, so they can be executed in the I/O thread, possibly improving performance by decreasing latency.
  - USE_DIRECT_BUFFERS
```
public static final Option<Boolean> USE_DIRECT_BUFFERS
```
    Specify whether direct buffers should be used for socket communications.
    
    Since:
    
    3.0
  - SECURE
```
public static final Option<Boolean> SECURE
```
    Determine whether the channel is encrypted, or employs some other level of security. The interpretation of this flag is specific to the channel in question; however, whatever the channel type, this flag is generally read-only.
  - SASL_POLICY_FORWARD_SECRECY
```
public static final Option<Boolean> SASL_POLICY_FORWARD_SECRECY
```
    Specify whether SASL mechanisms which implement forward secrecy between sessions are required.
    
    See Also:
    
    Sasl.POLICY_FORWARD_SECRECY
  - SASL_POLICY_NOACTIVE
```
public static final Option<Boolean> SASL_POLICY_NOACTIVE
```
    Specify whether SASL mechanisms which are susceptible to active (non-dictionary) attacks are permitted.
    
    See Also:
    
    Sasl.POLICY_NOACTIVE
  - SASL_POLICY_NOANONYMOUS
```
public static final Option<Boolean> SASL_POLICY_NOANONYMOUS
```
    Specify whether SASL mechanisms which accept anonymous logins are permitted.
    
    See Also:
    
    Sasl.POLICY_NOANONYMOUS
  - SASL_POLICY_NODICTIONARY
```
public static final Option<Boolean> SASL_POLICY_NODICTIONARY
```
    Specify whether SASL mechanisms which are susceptible to passive dictionary attacks are permitted.
    
    See Also:
    
    Sasl.POLICY_NODICTIONARY
  - SASL_POLICY_NOPLAINTEXT
```
public static final Option<Boolean> SASL_POLICY_NOPLAINTEXT
```
    Specify whether SASL mechanisms which are susceptible to simple plain passive attacks are permitted.
    
    See Also:
    
    Sasl.POLICY_NOPLAINTEXT
  - SASL_POLICY_PASS_CREDENTIALS
```
public static final Option<Boolean> SASL_POLICY_PASS_CREDENTIALS
```
    Specify whether SASL mechanisms which pass client credentials are required.
    
    See Also:
    
    Sasl.POLICY_PASS_CREDENTIALS
  - SASL_QOP
```
public static final Option<Sequence<SaslQop>> SASL_QOP
```
    Specify the SASL quality-of-protection to use.
    
    See Also:
    
    Sasl.QOP
  - SASL_STRENGTH
```
public static final Option<SaslStrength> SASL_STRENGTH
```
    Specify the SASL cipher strength to use.
    
    See Also:
    
    Sasl.STRENGTH
  - SASL_SERVER_AUTH
```
public static final Option<Boolean> SASL_SERVER_AUTH
```
    Specify whether the SASL server must authenticate to the client.
    
    See Also:
    
    Sasl.SERVER_AUTH
  - SASL_REUSE
```
public static final Option<Boolean> SASL_REUSE
```
    Specify whether SASL mechanisms should attempt to reuse authenticated session information.
    
    See Also:
    
    Sasl.REUSE
  - SASL_MECHANISMS
```
public static final Option<Sequence<String>> SASL_MECHANISMS
```
    A list of SASL mechanisms, in decreasing order of preference.
  - SASL_DISALLOWED_MECHANISMS
```
public static final Option<Sequence<String>> SASL_DISALLOWED_MECHANISMS
```
    A list of disallowed SASL mechanisms.
  - SASL_PROPERTIES
```
public static final Option<Sequence<Property>> SASL_PROPERTIES
```
    A list of provider specific SASL properties.
  - FILE_ACCESS
```
public static final Option<FileAccess> FILE_ACCESS
```
    The file access mode to use when opening a file.
  - FILE_APPEND
```
public static final Option<Boolean> FILE_APPEND
```
    A flag which indicates that opened files should be appended to. Some platforms do not support both append and FileAccess.READ_WRITE at the same time.
  - FILE_CREATE
```
public static final Option<Boolean> FILE_CREATE
```
    A flag which indicates that a file should be created if it does not exist (true by default for writing files, false by default for reading files).
  - STACK_SIZE
```
public static final Option<Long> STACK_SIZE
```
    The stack size (in bytes) to attempt to use for worker threads.
  - WORKER_NAME
```
public static final Option<String> WORKER_NAME
```
    The name to use for a newly created worker. If not specified, the string "XNIO" will be used. The worker name is used as a part of the thread name for created threads, and for any management constructs.
  - THREAD_PRIORITY
```
public static final Option<Integer> THREAD_PRIORITY
```
    The thread priority for newly created worker threads. If not specified, the platform default value will be used.
  - THREAD_DAEMON
```
public static final Option<Boolean> THREAD_DAEMON
```
    Specify whether worker threads should be daemon threads. Defaults to false.
  - WORKER_IO_THREADS
```
public static final Option<Integer> WORKER_IO_THREADS
```
    Specify the number of I/O threads to create for the worker. If not specified, a default will be chosen.
  - WORKER_READ_THREADS
```
public static final Option<Integer> WORKER_READ_THREADS
```
    Specify the number of I/O threads to devote to reading for split thread channels. If not specified, a default will be chosen to be roughly half of the worker I/O threads, or the number of threads not specified for writing.
  - WORKER_WRITE_THREADS
```
public static final Option<Integer> WORKER_WRITE_THREADS
```
    Specify the number of I/O threads to devote to writing for split thread channels. If not specified, a default will be chosen to be roughly half of the worker I/O threads, or the number of threads not specified for reading.
  - SPLIT_READ_WRITE_THREADS
```
public static final Option<Boolean> SPLIT_READ_WRITE_THREADS
```
    Specify whether read and write operations should be split among separate threads. If true, then each directional channel may be accessed concurrently with respect to one another, and will have different worker threads assigned; otherwise, both directions will share a worker thread and must not be accessed independently.
  - WORKER_ESTABLISH_WRITING
```
public static final Option<Boolean> WORKER_ESTABLISH_WRITING
```
    Specify whether a server, acceptor, or connector should be attached to write threads. By default, the establishing phase of connections are attached to read threads. Use this option if the client or server writes a message directly upon connect and a split threads configuration is used.
  - WORKER_ACCEPT_THREADS
```
@Deprecated
public static final Option<Integer> WORKER_ACCEPT_THREADS
```
    Deprecated. This option is now ignored. All I/O threads are used for accept, except in the case of split read/write threads, in which case only read or write threads will be used as determined by WORKER_ESTABLISH_WRITING.
    
    Specify the number of accept threads a single socket server should have. Specifying more than one can result in spurious wakeups for a socket server under low connection volume, but higher throughput at high connection volume. The minimum value is 1, and the maximum value is equal to the number of available worker threads.
  - WORKER_TASK_CORE_THREADS
```
public static final Option<Integer> WORKER_TASK_CORE_THREADS
```
    Specify the number of "core" threads for the worker task thread pool.
  - WORKER_TASK_MAX_THREADS
```
public static final Option<Integer> WORKER_TASK_MAX_THREADS
```
    Specify the maximum number of threads for the worker task thread pool.
  - WORKER_TASK_KEEPALIVE
```
public static final Option<Integer> WORKER_TASK_KEEPALIVE
```
    Specify the number of milliseconds to keep non-core task threads alive.
  - WORKER_TASK_LIMIT
```
public static final Option<Integer> WORKER_TASK_LIMIT
```
    Specify the maximum number of worker tasks to allow before rejecting.
  - CORK
```
public static final Option<Boolean> CORK
```
    Specify that output should be buffered. The exact behavior of the buffering is not specified; it may flush based on buffered size or time. An explicit SuspendableWriteChannel.flush() will still cause the channel to flush its contents immediately.
  - CONNECTION_HIGH_WATER
```
public static final Option<Integer> CONNECTION_HIGH_WATER
```
    The high water mark for a server's connections. Once this number of connections have been accepted, accepts will be suspended for that server.
  - CONNECTION_LOW_WATER
```
public static final Option<Integer> CONNECTION_LOW_WATER
```
    The low water mark for a server's connections. Once the number of active connections have dropped below this number, accepts can be resumed for that server.
  - COMPRESSION_LEVEL
```
public static final Option<Integer> COMPRESSION_LEVEL
```
    The compression level to apply for compressing streams and channels.
  - COMPRESSION_TYPE
```
public static final Option<CompressionType> COMPRESSION_TYPE
```
    The compression type to apply for compressing streams and channels.
  - BALANCING_TOKENS
```
public static final Option<Integer> BALANCING_TOKENS
```
    The number of balancing tokens, if connection-balancing is enabled. Must be less than the number of I/O threads, or 0 to disable balancing and just accept opportunistically.
  - BALANCING_CONNECTIONS
```
public static final Option<Integer> BALANCING_CONNECTIONS
```
    The number of connections to create per connection-balancing token, if connection-balancing is enabled.
  - WATCHER_POLL_INTERVAL
```
public static final Option<Integer> WATCHER_POLL_INTERVAL
```
    The poll interval for poll based file system watchers. Defaults to 5000ms. Ignored on Java 7 and later.

Class Options

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

ALLOW_BLOCKING

MULTICAST

BROADCAST

CLOSE_ABORT

RECEIVE_BUFFER

REUSE_ADDRESSES

SEND_BUFFER

TCP_NODELAY

MULTICAST_TTL

IP_TRAFFIC_CLASS

TCP_OOB_INLINE

KEEP_ALIVE

BACKLOG

READ_TIMEOUT

WRITE_TIMEOUT

MAX_INBOUND_MESSAGE_SIZE

MAX_OUTBOUND_MESSAGE_SIZE

SSL_ENABLED

SSL_CLIENT_AUTH_MODE

SSL_ENABLED_CIPHER_SUITES

SSL_SUPPORTED_CIPHER_SUITES

SSL_ENABLED_PROTOCOLS

SSL_SUPPORTED_PROTOCOLS

SSL_PROVIDER

SSL_PROTOCOL

SSL_ENABLE_SESSION_CREATION

SSL_USE_CLIENT_MODE

SSL_CLIENT_SESSION_CACHE_SIZE

SSL_CLIENT_SESSION_TIMEOUT

SSL_SERVER_SESSION_CACHE_SIZE

SSL_SERVER_SESSION_TIMEOUT

SSL_JSSE_KEY_MANAGER_CLASSES

SSL_JSSE_TRUST_MANAGER_CLASSES

SSL_RNG_OPTIONS

SSL_PACKET_BUFFER_SIZE

SSL_APPLICATION_BUFFER_SIZE

SSL_PACKET_BUFFER_REGION_SIZE

SSL_APPLICATION_BUFFER_REGION_SIZE

SSL_STARTTLS

SSL_PEER_HOST_NAME

SSL_PEER_PORT

SSL_NON_BLOCKING_KEY_MANAGER

SSL_NON_BLOCKING_TRUST_MANAGER

USE_DIRECT_BUFFERS

SECURE

SASL_POLICY_FORWARD_SECRECY

SASL_POLICY_NOACTIVE

SASL_POLICY_NOANONYMOUS

SASL_POLICY_NODICTIONARY

SASL_POLICY_NOPLAINTEXT

SASL_POLICY_PASS_CREDENTIALS

SASL_QOP

SASL_STRENGTH

SASL_SERVER_AUTH

SASL_REUSE

SASL_MECHANISMS

SASL_DISALLOWED_MECHANISMS

SASL_PROPERTIES

FILE_ACCESS

FILE_APPEND

FILE_CREATE

STACK_SIZE

WORKER_NAME

THREAD_PRIORITY

THREAD_DAEMON

WORKER_IO_THREADS

WORKER_READ_THREADS

WORKER_WRITE_THREADS

SPLIT_READ_WRITE_THREADS

WORKER_ESTABLISH_WRITING

WORKER_ACCEPT_THREADS

WORKER_TASK_CORE_THREADS

WORKER_TASK_MAX_THREADS

WORKER_TASK_KEEPALIVE

WORKER_TASK_LIMIT