https://tomcat.apache.org/: Tomcat Connectors and HTTP parser 
public class org.apache.tomcat.util.net.jsse.JSSEUtil extends org.apache.tomcat.util.net.SSLUtilBase
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.tomcat.util.net.jsse.JSSEUtil
  super_class: org.apache.tomcat.util.net.SSLUtilBase
{
  private static final org.apache.juli.logging.Log log;
    descriptor: Lorg/apache/juli/logging/Log;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private static final org.apache.tomcat.util.res.StringManager sm;
    descriptor: Lorg/apache/tomcat/util/res/StringManager;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private volatile boolean initialized;
    descriptor: Z
    flags: (0x0042) ACC_PRIVATE, ACC_VOLATILE

  private volatile java.util.Set<java.lang.String> implementedProtocols;
    descriptor: Ljava/util/Set;
    flags: (0x0042) ACC_PRIVATE, ACC_VOLATILE
    Signature: Ljava/util/Set<Ljava/lang/String;>;

  private volatile java.util.Set<java.lang.String> implementedCiphers;
    descriptor: Ljava/util/Set;
    flags: (0x0042) ACC_PRIVATE, ACC_VOLATILE
    Signature: Ljava/util/Set<Ljava/lang/String;>;

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 46
            ldc Lorg/apache/tomcat/util/net/jsse/JSSEUtil;
            invokestatic org.apache.juli.logging.LogFactory.getLog:(Ljava/lang/Class;)Lorg/apache/juli/logging/Log;
            putstatic org.apache.tomcat.util.net.jsse.JSSEUtil.log:Lorg/apache/juli/logging/Log;
         1: .line 47
            ldc Lorg/apache/tomcat/util/net/jsse/JSSEUtil;
            invokestatic org.apache.tomcat.util.res.StringManager.getManager:(Ljava/lang/Class;)Lorg/apache/tomcat/util/res/StringManager;
            putstatic org.apache.tomcat.util.net.jsse.JSSEUtil.sm:Lorg/apache/tomcat/util/res/StringManager;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>(org.apache.tomcat.util.net.SSLHostConfigCertificate);
    descriptor: (Lorg/apache/tomcat/util/net/SSLHostConfigCertificate;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.apache.tomcat.util.net.jsse.JSSEUtil this
        start local 1 // org.apache.tomcat.util.net.SSLHostConfigCertificate certificate
         0: .line 56
            aload 0 /* this */
            aload 1 /* certificate */
            iconst_1
            invokespecial org.apache.tomcat.util.net.jsse.JSSEUtil.<init>:(Lorg/apache/tomcat/util/net/SSLHostConfigCertificate;Z)V
         1: .line 57
            return
        end local 1 // org.apache.tomcat.util.net.SSLHostConfigCertificate certificate
        end local 0 // org.apache.tomcat.util.net.jsse.JSSEUtil this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    2     0         this  Lorg/apache/tomcat/util/net/jsse/JSSEUtil;
            0    2     1  certificate  Lorg/apache/tomcat/util/net/SSLHostConfigCertificate;
    MethodParameters:
             Name  Flags
      certificate  

  public void <init>(org.apache.tomcat.util.net.SSLHostConfigCertificate, boolean);
    descriptor: (Lorg/apache/tomcat/util/net/SSLHostConfigCertificate;Z)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // org.apache.tomcat.util.net.jsse.JSSEUtil this
        start local 1 // org.apache.tomcat.util.net.SSLHostConfigCertificate certificate
        start local 2 // boolean warnOnSkip
         0: .line 61
            aload 0 /* this */
            aload 1 /* certificate */
            iload 2 /* warnOnSkip */
            invokespecial org.apache.tomcat.util.net.SSLUtilBase.<init>:(Lorg/apache/tomcat/util/net/SSLHostConfigCertificate;Z)V
         1: .line 49
            aload 0 /* this */
            iconst_0
            putfield org.apache.tomcat.util.net.jsse.JSSEUtil.initialized:Z
         2: .line 62
            return
        end local 2 // boolean warnOnSkip
        end local 1 // org.apache.tomcat.util.net.SSLHostConfigCertificate certificate
        end local 0 // org.apache.tomcat.util.net.jsse.JSSEUtil this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    3     0         this  Lorg/apache/tomcat/util/net/jsse/JSSEUtil;
            0    3     1  certificate  Lorg/apache/tomcat/util/net/SSLHostConfigCertificate;
            0    3     2   warnOnSkip  Z
    MethodParameters:
             Name  Flags
      certificate  
      warnOnSkip   

  protected org.apache.juli.logging.Log getLog();
    descriptor: ()Lorg/apache/juli/logging/Log;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.tomcat.util.net.jsse.JSSEUtil this
         0: .line 67
            getstatic org.apache.tomcat.util.net.jsse.JSSEUtil.log:Lorg/apache/juli/logging/Log;
            areturn
        end local 0 // org.apache.tomcat.util.net.jsse.JSSEUtil this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/tomcat/util/net/jsse/JSSEUtil;

  protected java.util.Set<java.lang.String> getImplementedProtocols();
    descriptor: ()Ljava/util/Set;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.tomcat.util.net.jsse.JSSEUtil this
         0: .line 73
            aload 0 /* this */
            invokevirtual org.apache.tomcat.util.net.jsse.JSSEUtil.initialise:()V
         1: .line 74
            aload 0 /* this */
            getfield org.apache.tomcat.util.net.jsse.JSSEUtil.implementedProtocols:Ljava/util/Set;
            areturn
        end local 0 // org.apache.tomcat.util.net.jsse.JSSEUtil this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/tomcat/util/net/jsse/JSSEUtil;
    Signature: ()Ljava/util/Set<Ljava/lang/String;>;

  protected java.util.Set<java.lang.String> getImplementedCiphers();
    descriptor: ()Ljava/util/Set;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.tomcat.util.net.jsse.JSSEUtil this
         0: .line 80
            aload 0 /* this */
            invokevirtual org.apache.tomcat.util.net.jsse.JSSEUtil.initialise:()V
         1: .line 81
            aload 0 /* this */
            getfield org.apache.tomcat.util.net.jsse.JSSEUtil.implementedCiphers:Ljava/util/Set;
            areturn
        end local 0 // org.apache.tomcat.util.net.jsse.JSSEUtil this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/tomcat/util/net/jsse/JSSEUtil;
    Signature: ()Ljava/util/Set<Ljava/lang/String;>;

  protected boolean isTls13RenegAuthAvailable();
    descriptor: ()Z
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.tomcat.util.net.jsse.JSSEUtil this
         0: .line 88
            iconst_0
            ireturn
        end local 0 // org.apache.tomcat.util.net.jsse.JSSEUtil this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/tomcat/util/net/jsse/JSSEUtil;

  public org.apache.tomcat.util.net.SSLContext createSSLContextInternal(java.util.List<java.lang.String>);
    descriptor: (Ljava/util/List;)Lorg/apache/tomcat/util/net/SSLContext;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.apache.tomcat.util.net.jsse.JSSEUtil this
        start local 1 // java.util.List negotiableProtocols
         0: .line 95
            new org.apache.tomcat.util.net.jsse.JSSESSLContext
            dup
            aload 0 /* this */
            getfield org.apache.tomcat.util.net.jsse.JSSEUtil.sslHostConfig:Lorg/apache/tomcat/util/net/SSLHostConfig;
            invokevirtual org.apache.tomcat.util.net.SSLHostConfig.getSslProtocol:()Ljava/lang/String;
            invokespecial org.apache.tomcat.util.net.jsse.JSSESSLContext.<init>:(Ljava/lang/String;)V
            areturn
        end local 1 // java.util.List negotiableProtocols
        end local 0 // org.apache.tomcat.util.net.jsse.JSSEUtil this
      LocalVariableTable:
        Start  End  Slot                 Name  Signature
            0    1     0                 this  Lorg/apache/tomcat/util/net/jsse/JSSEUtil;
            0    1     1  negotiableProtocols  Ljava/util/List<Ljava/lang/String;>;
    Exceptions:
      throws java.security.NoSuchAlgorithmException
    Signature: (Ljava/util/List<Ljava/lang/String;>;)Lorg/apache/tomcat/util/net/SSLContext;
    MethodParameters:
                     Name  Flags
      negotiableProtocols  

  private void initialise();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=7, locals=9, args_size=1
        start local 0 // org.apache.tomcat.util.net.jsse.JSSEUtil this
         0: .line 100
            aload 0 /* this */
            getfield org.apache.tomcat.util.net.jsse.JSSEUtil.initialized:Z
            ifne 39
         1: .line 101
            aload 0 /* this */
            dup
            astore 1
            monitorenter
         2: .line 102
            aload 0 /* this */
            getfield org.apache.tomcat.util.net.jsse.JSSEUtil.initialized:Z
            ifne 35
         3: .line 105
            new org.apache.tomcat.util.net.jsse.JSSESSLContext
            dup
            aload 0 /* this */
            getfield org.apache.tomcat.util.net.jsse.JSSEUtil.sslHostConfig:Lorg/apache/tomcat/util/net/SSLHostConfig;
            invokevirtual org.apache.tomcat.util.net.SSLHostConfig.getSslProtocol:()Ljava/lang/String;
            invokespecial org.apache.tomcat.util.net.jsse.JSSESSLContext.<init>:(Ljava/lang/String;)V
            astore 2 /* context */
        start local 2 // org.apache.tomcat.util.net.SSLContext context
         4: .line 106
            aload 2 /* context */
            aconst_null
            aconst_null
            aconst_null
            invokeinterface org.apache.tomcat.util.net.SSLContext.init:([Ljavax/net/ssl/KeyManager;[Ljavax/net/ssl/TrustManager;Ljava/security/SecureRandom;)V
         5: .line 107
            goto 8
        end local 2 // org.apache.tomcat.util.net.SSLContext context
      StackMap locals: org.apache.tomcat.util.net.jsse.JSSEUtil org.apache.tomcat.util.net.jsse.JSSEUtil
      StackMap stack: java.security.GeneralSecurityException
         6: astore 3 /* e */
        start local 3 // java.security.GeneralSecurityException e
         7: .line 110
            new java.lang.IllegalArgumentException
            dup
            aload 3 /* e */
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/Throwable;)V
            athrow
        end local 3 // java.security.GeneralSecurityException e
        start local 2 // org.apache.tomcat.util.net.SSLContext context
         8: .line 113
      StackMap locals: org.apache.tomcat.util.net.SSLContext
      StackMap stack:
            aload 2 /* context */
            invokeinterface org.apache.tomcat.util.net.SSLContext.getSupportedSSLParameters:()Ljavax/net/ssl/SSLParameters;
            invokevirtual javax.net.ssl.SSLParameters.getProtocols:()[Ljava/lang/String;
            astore 3 /* implementedProtocolsArray */
        start local 3 // java.lang.String[] implementedProtocolsArray
         9: .line 114
            aload 0 /* this */
            new java.util.HashSet
            dup
            aload 3 /* implementedProtocolsArray */
            arraylength
            invokespecial java.util.HashSet.<init>:(I)V
            putfield org.apache.tomcat.util.net.jsse.JSSEUtil.implementedProtocols:Ljava/util/Set;
        10: .line 121
            aload 3 /* implementedProtocolsArray */
            dup
            astore 7
            arraylength
            istore 6
            iconst_0
            istore 5
            goto 19
      StackMap locals: org.apache.tomcat.util.net.jsse.JSSEUtil org.apache.tomcat.util.net.jsse.JSSEUtil org.apache.tomcat.util.net.SSLContext java.lang.String[] top int int java.lang.String[]
      StackMap stack:
        11: aload 7
            iload 5
            aaload
            astore 4 /* protocol */
        start local 4 // java.lang.String protocol
        12: .line 122
            aload 4 /* protocol */
            getstatic java.util.Locale.ENGLISH:Ljava/util/Locale;
            invokevirtual java.lang.String.toUpperCase:(Ljava/util/Locale;)Ljava/lang/String;
            astore 8 /* protocolUpper */
        start local 8 // java.lang.String protocolUpper
        13: .line 123
            ldc "SSLV2HELLO"
            aload 8 /* protocolUpper */
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 17
            ldc "SSLV3"
            aload 8 /* protocolUpper */
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 17
        14: .line 124
            aload 8 /* protocolUpper */
            ldc "SSL"
            invokevirtual java.lang.String.contains:(Ljava/lang/CharSequence;)Z
            ifeq 17
        15: .line 125
            getstatic org.apache.tomcat.util.net.jsse.JSSEUtil.log:Lorg/apache/juli/logging/Log;
            getstatic org.apache.tomcat.util.net.jsse.JSSEUtil.sm:Lorg/apache/tomcat/util/res/StringManager;
            ldc "jsseUtil.excludeProtocol"
            iconst_1
            anewarray java.lang.Object
            dup
            iconst_0
            aload 4 /* protocol */
            aastore
            invokevirtual org.apache.tomcat.util.res.StringManager.getString:(Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;
            invokeinterface org.apache.juli.logging.Log.debug:(Ljava/lang/Object;)V
        16: .line 126
            goto 18
        17: .line 129
      StackMap locals: org.apache.tomcat.util.net.jsse.JSSEUtil org.apache.tomcat.util.net.jsse.JSSEUtil org.apache.tomcat.util.net.SSLContext java.lang.String[] java.lang.String int int java.lang.String[] java.lang.String
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.tomcat.util.net.jsse.JSSEUtil.implementedProtocols:Ljava/util/Set;
            aload 4 /* protocol */
            invokeinterface java.util.Set.add:(Ljava/lang/Object;)Z
            pop
        end local 8 // java.lang.String protocolUpper
        end local 4 // java.lang.String protocol
        18: .line 121
      StackMap locals: org.apache.tomcat.util.net.jsse.JSSEUtil org.apache.tomcat.util.net.jsse.JSSEUtil org.apache.tomcat.util.net.SSLContext java.lang.String[] top int int java.lang.String[]
      StackMap stack:
            iinc 5 1
      StackMap locals:
      StackMap stack:
        19: iload 5
            iload 6
            if_icmplt 11
        20: .line 132
            aload 0 /* this */
            getfield org.apache.tomcat.util.net.jsse.JSSEUtil.implementedProtocols:Ljava/util/Set;
            invokeinterface java.util.Set.size:()I
            ifne 22
        21: .line 133
            getstatic org.apache.tomcat.util.net.jsse.JSSEUtil.log:Lorg/apache/juli/logging/Log;
            getstatic org.apache.tomcat.util.net.jsse.JSSEUtil.sm:Lorg/apache/tomcat/util/res/StringManager;
            ldc "jsseUtil.noDefaultProtocols"
            invokevirtual org.apache.tomcat.util.res.StringManager.getString:(Ljava/lang/String;)Ljava/lang/String;
            invokeinterface org.apache.juli.logging.Log.warn:(Ljava/lang/Object;)V
        22: .line 136
      StackMap locals: org.apache.tomcat.util.net.jsse.JSSEUtil org.apache.tomcat.util.net.jsse.JSSEUtil org.apache.tomcat.util.net.SSLContext java.lang.String[]
      StackMap stack:
            aload 2 /* context */
            invokeinterface org.apache.tomcat.util.net.SSLContext.getSupportedSSLParameters:()Ljavax/net/ssl/SSLParameters;
            invokevirtual javax.net.ssl.SSLParameters.getCipherSuites:()[Ljava/lang/String;
            astore 4 /* implementedCipherSuiteArray */
        start local 4 // java.lang.String[] implementedCipherSuiteArray
        23: .line 141
            getstatic org.apache.tomcat.util.compat.JreVendor.IS_IBM_JVM:Z
            ifeq 33
        24: .line 142
            aload 0 /* this */
            new java.util.HashSet
            dup
            aload 4 /* implementedCipherSuiteArray */
            arraylength
            iconst_2
            imul
            invokespecial java.util.HashSet.<init>:(I)V
            putfield org.apache.tomcat.util.net.jsse.JSSEUtil.implementedCiphers:Ljava/util/Set;
        25: .line 143
            aload 4 /* implementedCipherSuiteArray */
            dup
            astore 8
            arraylength
            istore 7
            iconst_0
            istore 6
            goto 31
      StackMap locals: org.apache.tomcat.util.net.jsse.JSSEUtil org.apache.tomcat.util.net.jsse.JSSEUtil org.apache.tomcat.util.net.SSLContext java.lang.String[] java.lang.String[] top int int java.lang.String[]
      StackMap stack:
        26: aload 8
            iload 6
            aaload
            astore 5 /* name */
        start local 5 // java.lang.String name
        27: .line 144
            aload 0 /* this */
            getfield org.apache.tomcat.util.net.jsse.JSSEUtil.implementedCiphers:Ljava/util/Set;
            aload 5 /* name */
            invokeinterface java.util.Set.add:(Ljava/lang/Object;)Z
            pop
        28: .line 145
            aload 5 /* name */
            ldc "SSL"
            invokevirtual java.lang.String.startsWith:(Ljava/lang/String;)Z
            ifeq 30
        29: .line 146
            aload 0 /* this */
            getfield org.apache.tomcat.util.net.jsse.JSSEUtil.implementedCiphers:Ljava/util/Set;
            new java.lang.StringBuilder
            dup
            ldc "TLS"
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 5 /* name */
            iconst_3
            invokevirtual java.lang.String.substring:(I)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokeinterface java.util.Set.add:(Ljava/lang/Object;)Z
            pop
        end local 5 // java.lang.String name
        30: .line 143
      StackMap locals:
      StackMap stack:
            iinc 6 1
      StackMap locals:
      StackMap stack:
        31: iload 6
            iload 7
            if_icmplt 26
        32: .line 149
            goto 34
        33: .line 150
      StackMap locals: org.apache.tomcat.util.net.jsse.JSSEUtil org.apache.tomcat.util.net.jsse.JSSEUtil org.apache.tomcat.util.net.SSLContext java.lang.String[] java.lang.String[]
      StackMap stack:
            aload 0 /* this */
            new java.util.HashSet
            dup
            aload 4 /* implementedCipherSuiteArray */
            invokestatic java.util.Arrays.asList:([Ljava/lang/Object;)Ljava/util/List;
            invokespecial java.util.HashSet.<init>:(Ljava/util/Collection;)V
            putfield org.apache.tomcat.util.net.jsse.JSSEUtil.implementedCiphers:Ljava/util/Set;
        34: .line 152
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            iconst_1
            putfield org.apache.tomcat.util.net.jsse.JSSEUtil.initialized:Z
        end local 4 // java.lang.String[] implementedCipherSuiteArray
        end local 3 // java.lang.String[] implementedProtocolsArray
        end local 2 // org.apache.tomcat.util.net.SSLContext context
        35: .line 101
      StackMap locals:
      StackMap stack:
            aload 1
            monitorexit
        36: goto 39
      StackMap locals:
      StackMap stack: java.lang.Throwable
        37: aload 1
            monitorexit
        38: athrow
        39: .line 156
      StackMap locals:
      StackMap stack:
            return
        end local 0 // org.apache.tomcat.util.net.jsse.JSSEUtil this
      LocalVariableTable:
        Start  End  Slot                         Name  Signature
            0   40     0                         this  Lorg/apache/tomcat/util/net/jsse/JSSEUtil;
            4    6     2                      context  Lorg/apache/tomcat/util/net/SSLContext;
            8   35     2                      context  Lorg/apache/tomcat/util/net/SSLContext;
            7    8     3                            e  Ljava/security/GeneralSecurityException;
            9   35     3    implementedProtocolsArray  [Ljava/lang/String;
           12   18     4                     protocol  Ljava/lang/String;
           13   18     8                protocolUpper  Ljava/lang/String;
           23   35     4  implementedCipherSuiteArray  [Ljava/lang/String;
           27   30     5                         name  Ljava/lang/String;
      Exception table:
        from    to  target  type
           3     5       6  Class java.security.NoSuchAlgorithmException
           3     5       6  Class java.security.KeyManagementException
           2    36      37  any
          37    38      37  any
}
SourceFile: "JSSEUtil.java"