SSLParameters (Java Platform SE 8 )

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

```
public class SSLParameters
extends Object
```
Encapsulates parameters for an SSL/TLS connection. The parameters are the list of ciphersuites to be accepted in an SSL/TLS handshake, the list of protocols to be allowed, the endpoint identification algorithm during SSL/TLS handshaking, the Server Name Indication (SNI), the algorithm constraints and whether SSL/TLS servers should request or require client authentication, etc.
SSLParameters can be created via the constructors in this class. Objects can also be obtained using the getSSLParameters() methods in SSLSocket and SSLServerSocket and SSLEngine or the getDefaultSSLParameters() and getSupportedSSLParameters() methods in SSLContext.
SSLParameters can be applied to a connection via the methods SSLSocket.setSSLParameters() and SSLServerSocket.setSSLParameters() and SSLEngine.setSSLParameters().
For example:
```
     SSLParameters p = sslSocket.getSSLParameters();
     p.setProtocols(new String[] { "TLSv1.2" });
     p.setCipherSuites(
         new String[] { "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256", ... });
     p.setApplicationProtocols(new String[] {"h2", "http/1.1"});
     sslSocket.setSSLParameters(p);
 
```
*
Since:

1.6

See Also:

SSLSocket, SSLEngine, SSLContext

Constructor Summary

Constructors
Constructor and Description
`SSLParameters()` Constructs SSLParameters.
`SSLParameters(String[] cipherSuites)` Constructs SSLParameters from the specified array of ciphersuites.
`SSLParameters(String[] cipherSuites, String[] protocols)` Constructs SSLParameters from the specified array of ciphersuites and protocols.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`AlgorithmConstraints`	`getAlgorithmConstraints()` Returns the cryptographic algorithm constraints.
`String[]`	`getApplicationProtocols()` Returns a prioritized array of application-layer protocol names that can be negotiated over the SSL/TLS/DTLS protocols.
`String[]`	`getCipherSuites()` Returns a copy of the array of ciphersuites or null if none have been set.
`String`	`getEndpointIdentificationAlgorithm()` Gets the endpoint identification algorithm.
`boolean`	`getNeedClientAuth()` Returns whether client authentication should be required.
`String[]`	`getProtocols()` Returns a copy of the array of protocols or null if none have been set.
`List<SNIServerName>`	`getServerNames()` Returns a `List` containing all `SNIServerName`s of the Server Name Indication (SNI) parameter, or null if none has been set.
`Collection<SNIMatcher>`	`getSNIMatchers()` Returns a `Collection` containing all `SNIMatcher`s of the Server Name Indication (SNI) parameter, or null if none has been set.
`boolean`	`getUseCipherSuitesOrder()` Returns whether the local cipher suites preference should be honored.
`boolean`	`getWantClientAuth()` Returns whether client authentication should be requested.
`void`	`setAlgorithmConstraints(AlgorithmConstraints constraints)` Sets the cryptographic algorithm constraints, which will be used in addition to any configured by the runtime environment.
`void`	`setApplicationProtocols(String[] protocols)` Sets the prioritized array of application-layer protocol names that can be negotiated over the SSL/TLS/DTLS protocols.
`void`	`setCipherSuites(String[] cipherSuites)` Sets the array of ciphersuites.
`void`	`setEndpointIdentificationAlgorithm(String algorithm)` Sets the endpoint identification algorithm.
`void`	`setNeedClientAuth(boolean needClientAuth)` Sets whether client authentication should be required.
`void`	`setProtocols(String[] protocols)` Sets the array of protocols.
`void`	`setServerNames(List<SNIServerName> serverNames)` Sets the desired `SNIServerName`s of the Server Name Indication (SNI) parameter.
`void`	`setSNIMatchers(Collection<SNIMatcher> matchers)` Sets the `SNIMatcher`s of the Server Name Indication (SNI) parameter.
`void`	`setUseCipherSuitesOrder(boolean honorOrder)` Sets whether the local cipher suites preference should be honored.
`void`	`setWantClientAuth(boolean wantClientAuth)` Sets whether client authentication should be requested.

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

- Constructor Detail
  - SSLParameters
```
public SSLParameters()
```
    Constructs SSLParameters.
    The values of cipherSuites, protocols, cryptographic algorithm constraints, endpoint identification algorithm, server names and server name matchers are set to null, useCipherSuitesOrder, wantClientAuth and needClientAuth are set to false.
  - SSLParameters
```
public SSLParameters(String[] cipherSuites)
```
    Constructs SSLParameters from the specified array of ciphersuites.
    Calling this constructor is equivalent to calling the no-args constructor followed by setCipherSuites(cipherSuites);.
    
    Parameters:
    
    cipherSuites - the array of ciphersuites (or null)
  - SSLParameters
```
public SSLParameters(String[] cipherSuites,
                     String[] protocols)
```
    Constructs SSLParameters from the specified array of ciphersuites and protocols.
    Calling this constructor is equivalent to calling the no-args constructor followed by setCipherSuites(cipherSuites); setProtocols(protocols);.
    
    Parameters:
    
    cipherSuites - the array of ciphersuites (or null)
    
    protocols - the array of protocols (or null)
- Method Detail
  - getCipherSuites
```
public String[] getCipherSuites()
```
    Returns a copy of the array of ciphersuites or null if none have been set.
    
    Returns:
    
    a copy of the array of ciphersuites or null if none have been set.
  - setCipherSuites
```
public void setCipherSuites(String[] cipherSuites)
```
    Sets the array of ciphersuites.
    
    Parameters:
    
    cipherSuites - the array of ciphersuites (or null)
  - getProtocols
```
public String[] getProtocols()
```
    Returns a copy of the array of protocols or null if none have been set.
    
    Returns:
    
    a copy of the array of protocols or null if none have been set.
  - setProtocols
```
public void setProtocols(String[] protocols)
```
    Sets the array of protocols.
    
    Parameters:
    
    protocols - the array of protocols (or null)
  - getWantClientAuth
```
public boolean getWantClientAuth()
```
    Returns whether client authentication should be requested.
    
    Returns:
    
    whether client authentication should be requested.
  - setWantClientAuth
```
public void setWantClientAuth(boolean wantClientAuth)
```
    Sets whether client authentication should be requested. Calling this method clears the needClientAuth flag.
    
    Parameters:
    
    wantClientAuth - whether client authentication should be requested
  - getNeedClientAuth
```
public boolean getNeedClientAuth()
```
    Returns whether client authentication should be required.
    
    Returns:
    
    whether client authentication should be required.
  - setNeedClientAuth
```
public void setNeedClientAuth(boolean needClientAuth)
```
    Sets whether client authentication should be required. Calling this method clears the wantClientAuth flag.
    
    Parameters:
    
    needClientAuth - whether client authentication should be required
  - getAlgorithmConstraints
```
public AlgorithmConstraints getAlgorithmConstraints()
```
    Returns the cryptographic algorithm constraints.
    
    Returns:
    
    the cryptographic algorithm constraints, or null if the constraints have not been set
    
    Since:
    
    1.7
    
    See Also:
    
    setAlgorithmConstraints(AlgorithmConstraints)
  - setAlgorithmConstraints
```
public void setAlgorithmConstraints(AlgorithmConstraints constraints)
```
    Sets the cryptographic algorithm constraints, which will be used in addition to any configured by the runtime environment.
    If the constraints parameter is non-null, every cryptographic algorithm, key and algorithm parameters used in the SSL/TLS handshake must be permitted by the constraints.
    
    Parameters:
    
    constraints - the algorithm constraints (or null)
    
    Since:
    
    1.7
  - getEndpointIdentificationAlgorithm
```
public String getEndpointIdentificationAlgorithm()
```
    Gets the endpoint identification algorithm.
    
    Returns:
    
    the endpoint identification algorithm, or null if none has been set.
    
    Since:
    
    1.7
    
    See Also:
    
    X509ExtendedTrustManager, setEndpointIdentificationAlgorithm(String)
  - setEndpointIdentificationAlgorithm
```
public void setEndpointIdentificationAlgorithm(String algorithm)
```
    Sets the endpoint identification algorithm.
    If the algorithm parameter is non-null or non-empty, the endpoint identification/verification procedures must be handled during SSL/TLS handshaking. This is to prevent man-in-the-middle attacks.
    
    Parameters:
    
    algorithm - The standard string name of the endpoint identification algorithm (or null). See Appendix A in the Java Cryptography Architecture API Specification & Reference for information about standard algorithm names.
    
    Since:
    
    1.7
    
    See Also:
    
    X509ExtendedTrustManager
  - setServerNames
```
public final void setServerNames(List<SNIServerName> serverNames)
```
    Sets the desired SNIServerNames of the Server Name Indication (SNI) parameter.
    This method is only useful to SSLSockets or SSLEngines operating in client mode.
    Note that the serverNames list is cloned to protect against subsequent modification.
    
    Parameters:
    
    serverNames - the list of desired SNIServerNames (or null)
    
    Throws:
    
    NullPointerException - if the serverNames contains null element
    
    IllegalArgumentException - if the serverNames contains more than one name of the same name type
    
    Since:
    
    1.8
    
    See Also:
    
    SNIServerName, getServerNames()
  - getServerNames
```
public final List<SNIServerName> getServerNames()
```
    Returns a List containing all SNIServerNames of the Server Name Indication (SNI) parameter, or null if none has been set.
    This method is only useful to SSLSockets or SSLEngines operating in client mode.
    For SSL/TLS connections, the underlying SSL/TLS provider may specify a default value for a certain server name type. In client mode, it is recommended that, by default, providers should include the server name indication whenever the server can be located by a supported server name type.
    It is recommended that providers initialize default Server Name Indications when creating SSLSocket/SSLEngines. In the following examples, the server name could be represented by an instance of SNIHostName which has been initialized with the hostname "www.example.com" and type StandardConstants.SNI_HOST_NAME.
```
     Socket socket =
         sslSocketFactory.createSocket("www.example.com", 443);
 
```
    or
```
     SSLEngine engine =
         sslContext.createSSLEngine("www.example.com", 443);
 
```
    Returns:
    
    null or an immutable list of non-null SNIServerNames
    
    Since:
    
    1.8
    
    See Also:
    
    List, setServerNames(List)
  - setSNIMatchers
```
public final void setSNIMatchers(Collection<SNIMatcher> matchers)
```
    Sets the SNIMatchers of the Server Name Indication (SNI) parameter.
    This method is only useful to SSLSockets or SSLEngines operating in server mode.
    Note that the matchers collection is cloned to protect against subsequent modification.
    
    Parameters:
    
    matchers - the collection of SNIMatchers (or null)
    
    Throws:
    
    NullPointerException - if the matchers contains null element
    
    IllegalArgumentException - if the matchers contains more than one name of the same name type
    
    Since:
    
    1.8
    
    See Also:
    
    Collection, SNIMatcher, getSNIMatchers()
  - getSNIMatchers
```
public final Collection<SNIMatcher> getSNIMatchers()
```
    Returns a Collection containing all SNIMatchers of the Server Name Indication (SNI) parameter, or null if none has been set.
    This method is only useful to SSLSockets or SSLEngines operating in server mode.
    For better interoperability, providers generally will not define default matchers so that by default servers will ignore the SNI extension and continue the handshake.
    
    Returns:
    
    null or an immutable collection of non-null SNIMatchers
    
    Since:
    
    1.8
    
    See Also:
    
    SNIMatcher, setSNIMatchers(Collection)
  - setUseCipherSuitesOrder
```
public final void setUseCipherSuitesOrder(boolean honorOrder)
```
    Sets whether the local cipher suites preference should be honored.
    
    Parameters:
    
    honorOrder - whether local cipher suites order in #getCipherSuites should be honored during SSL/TLS handshaking.
    
    Since:
    
    1.8
    
    See Also:
    
    getUseCipherSuitesOrder()
  - getUseCipherSuitesOrder
```
public final boolean getUseCipherSuitesOrder()
```
    Returns whether the local cipher suites preference should be honored.
    
    Returns:
    
    whether local cipher suites order in #getCipherSuites should be honored during SSL/TLS handshaking.
    
    Since:
    
    1.8
    
    See Also:
    
    setUseCipherSuitesOrder(boolean)
  - getApplicationProtocols
```
public String[] getApplicationProtocols()
```
    Returns a prioritized array of application-layer protocol names that can be negotiated over the SSL/TLS/DTLS protocols.
    The array could be empty (zero-length), in which case protocol indications will not be used.
    This method will return a new array each time it is invoked.
    
    API Note:
    
    This method is defined in Java SE 8 Maintenance Release 3.
    
    Returns:
    
    a non-null, possibly zero-length array of application protocol Strings. The array is ordered based on protocol preference, with protocols[0] being the most preferred.
    
    Since:
    
    8
    
    See Also:
    
    setApplicationProtocols(java.lang.String[])
  - setApplicationProtocols
```
public void setApplicationProtocols(String[] protocols)
```
    Sets the prioritized array of application-layer protocol names that can be negotiated over the SSL/TLS/DTLS protocols.
    If application-layer protocols are supported by the underlying SSL/TLS implementation, this method configures which values can be negotiated by protocols such as RFC 7301 , the Application Layer Protocol Negotiation (ALPN).
    If this end of the connection is expected to offer application protocol values, all protocols configured by this method will be sent to the peer.
    If this end of the connection is expected to select the application protocol value, the protocols configured by this method are compared with those sent by the peer. The first matched value becomes the negotiated value. If none of the protocols were actually requested by the peer, the underlying protocol will determine what action to take. (For example, ALPN will send a "no_application_protocol" alert and terminate the connection.)
    
    API Note:
    
    This method is defined in Java SE 8 Maintenance Release 3.
    
    Implementation Requirements:
    
    This method will make a copy of the protocols array.
    
    Parameters:
    
    protocols - an ordered array of application protocols, with protocols[0] being the most preferred. If the array is empty (zero-length), protocol indications will not be used.
    
    Throws:
    
    IllegalArgumentException - if protocols is null, or if any element in a non-empty array is null or an empty (zero-length) string
    
    Since:
    
    8
    
    See Also:
    
    getApplicationProtocols()

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Class SSLParameters

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

SSLParameters

SSLParameters

SSLParameters

Method Detail

getCipherSuites

setCipherSuites

getProtocols

setProtocols

getWantClientAuth

setWantClientAuth

getNeedClientAuth

setNeedClientAuth

getAlgorithmConstraints

setAlgorithmConstraints

getEndpointIdentificationAlgorithm

setEndpointIdentificationAlgorithm

setServerNames

getServerNames

setSNIMatchers

getSNIMatchers

setUseCipherSuitesOrder

getUseCipherSuitesOrder

getApplicationProtocols

setApplicationProtocols