SNIMatcher (Java SE 12 & JDK 12 )

java.lang.Object
- javax.net.ssl.SNIMatcher

```
public abstract class SNIMatcher
extends Object
```
Instances of this class represent a matcher that performs match operations on an SNIServerName instance.
Servers can use Server Name Indication (SNI) information to decide if specific SSLSocket or SSLEngine instances should accept a connection. For example, when multiple "virtual" or "name-based" servers are hosted on a single underlying network address, the server application can use SNI information to determine whether this server is the exact server that the client wants to access. Instances of this class can be used by a server to verify the acceptable server names of a particular type, such as host names.
SNIMatcher objects are immutable. Subclasses should not provide methods that can change the state of an instance once it has been created.

Since:

1.8

See Also:

SNIServerName, SNIHostName, SSLParameters.getSNIMatchers(), SSLParameters.setSNIMatchers(Collection)

Constructor Summary

Constructors
Modifier Constructor Description

protected SNIMatcher(int type)
Creates an SNIMatcher using the specified server name type.

Method Summary

Modifier and Type	Method	Description
`int`	`getType()`	Returns the server name type of this `SNIMatcher` object.
`abstract boolean`	`matches(SNIServerName serverName)`	Attempts to match the given `SNIServerName`.

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

- Constructor Detail
  - SNIMatcher
```
protected SNIMatcher(int type)
```
    Creates an SNIMatcher using the specified server name type.
    
    Parameters:
    
    type - the type of the server name that this matcher performs on
    
    Throws:
    
    IllegalArgumentException - if type is not in the range of 0 to 255, inclusive.
- Method Detail
  - getType
```
public final int getType()
```
    Returns the server name type of this SNIMatcher object.
    
    Returns:
    
    the server name type of this SNIMatcher object.
    
    See Also:
    
    SNIServerName
  - matches
```
public abstract boolean matches(SNIServerName serverName)
```
    Attempts to match the given SNIServerName.
    
    Parameters:
    
    serverName - the SNIServerName instance on which this matcher performs match operations
    
    Returns:
    
    true if, and only if, the matcher matches the given serverName
    
    Throws:
    
    NullPointerException - if serverName is null
    
    IllegalArgumentException - if serverName is not of the given server name type of this matcher
    
    See Also:
    
    SNIServerName