TLSClientHelloExtractor (Apache Tomcat 9.0.63 API Documentation)

java.lang.Object
- org.apache.tomcat.util.net.TLSClientHelloExtractor

```
public class TLSClientHelloExtractor
extends Object
```
This class extracts the SNI host name and ALPN protocols from a TLS client-hello message.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class TLSClientHelloExtractor.ExtractorResult

Field Summary

Fields
Modifier and Type Field Description

static byte[] USE_TLS_RESPONSE

Constructor Summary

Constructors
Constructor Description

TLSClientHelloExtractor(ByteBuffer netInBuffer)
Creates the instance of the parser and processes the provided buffer.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`List<String>`	`getClientRequestedApplicationProtocols()`
`List<String>`	`getClientRequestedCipherNames()`
`List<Cipher>`	`getClientRequestedCiphers()`
`List<String>`	`getClientRequestedProtocols()`
`TLSClientHelloExtractor.ExtractorResult`	`getResult()`
`String`	`getSNIValue()`

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

- Field Detail
  - USE_TLS_RESPONSE
```
public static byte[] USE_TLS_RESPONSE
```
- Constructor Detail
  - TLSClientHelloExtractor
```
public TLSClientHelloExtractor(ByteBuffer netInBuffer)
                        throws IOException
```
    Creates the instance of the parser and processes the provided buffer. The buffer position and limit will be modified during the execution of this method but they will be returned to the original values before the method exits.
    
    Parameters:
    
    netInBuffer - The buffer containing the TLS data to process
    
    Throws:
    
    IOException - If the client hello message is malformed
- Method Detail
  - getResult
```
public TLSClientHelloExtractor.ExtractorResult getResult()
```
  - getSNIValue
```
public String getSNIValue()
```
    Returns:
    
    The SNI value provided by the client converted to lower case if not already lower case.
  - getClientRequestedCiphers
```
public List<Cipher> getClientRequestedCiphers()
```
  - getClientRequestedCipherNames
```
public List<String> getClientRequestedCipherNames()
```
  - getClientRequestedApplicationProtocols
```
public List<String> getClientRequestedApplicationProtocols()
```
  - getClientRequestedProtocols
```
public List<String> getClientRequestedProtocols()
```