io.netty/netty-all/4.1.25.Final : io/netty/resolver/dns/DefaultDnsServerAddressStreamProvider.class

DefaultDnsServerAddressStreamProvider
http://netty.io/netty-all/: Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients. (The Netty Project)
Apache License, Version 2.0
The Netty Project Contributors (The Netty Project)
public final class io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider implements io.netty.resolver.dns.DnsServerAddressStreamProvider
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider
  super_class: java.lang.Object
{
  private static final io.netty.util.internal.logging.InternalLogger logger;
    descriptor: Lio/netty/util/internal/logging/InternalLogger;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  public static final io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider INSTANCE;
    descriptor: Lio/netty/resolver/dns/DefaultDnsServerAddressStreamProvider;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  private static final java.util.List<java.net.InetSocketAddress> DEFAULT_NAME_SERVER_LIST;
    descriptor: Ljava/util/List;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    Signature: Ljava/util/List<Ljava/net/InetSocketAddress;>;

  private static final java.net.InetSocketAddress[] DEFAULT_NAME_SERVER_ARRAY;
    descriptor: [Ljava/net/InetSocketAddress;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private static final io.netty.resolver.dns.DnsServerAddresses DEFAULT_NAME_SERVERS;
    descriptor: Lio/netty/resolver/dns/DnsServerAddresses;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  static final int DNS_PORT;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 53

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=6, locals=12, args_size=0
         0: .line 49
            ldc Lio/netty/resolver/dns/DefaultDnsServerAddressStreamProvider;
            invokestatic io.netty.util.internal.logging.InternalLoggerFactory.getInstance:(Ljava/lang/Class;)Lio/netty/util/internal/logging/InternalLogger;
         1: .line 48
            putstatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.logger:Lio/netty/util/internal/logging/InternalLogger;
         2: .line 50
            new io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider
            dup
            invokespecial io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.<init>:()V
            putstatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.INSTANCE:Lio/netty/resolver/dns/DefaultDnsServerAddressStreamProvider;
         3: .line 58
            new java.util.ArrayList
            dup
            iconst_2
            invokespecial java.util.ArrayList.<init>:(I)V
            astore 0 /* defaultNameServers */
        start local 0 // java.util.List defaultNameServers
         4: .line 65
            new java.util.Hashtable
            dup
            invokespecial java.util.Hashtable.<init>:()V
            astore 1 /* env */
        start local 1 // java.util.Hashtable env
         5: .line 66
            aload 1 /* env */
            ldc "java.naming.factory.initial"
            ldc "com.sun.jndi.dns.DnsContextFactory"
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         6: .line 67
            aload 1 /* env */
            ldc "java.naming.provider.url"
            ldc "dns://"
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         7: .line 69
            new javax.naming.directory.InitialDirContext
            dup
            aload 1 /* env */
            invokespecial javax.naming.directory.InitialDirContext.<init>:(Ljava/util/Hashtable;)V
            astore 2 /* ctx */
        start local 2 // javax.naming.directory.DirContext ctx
         8: .line 70
            aload 2 /* ctx */
            invokeinterface javax.naming.directory.DirContext.getEnvironment:()Ljava/util/Hashtable;
            ldc "java.naming.provider.url"
            invokevirtual java.util.Hashtable.get:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.lang.String
            astore 3 /* dnsUrls */
        start local 3 // java.lang.String dnsUrls
         9: .line 72
            aload 3 /* dnsUrls */
            ifnull 31
            aload 3 /* dnsUrls */
            invokevirtual java.lang.String.isEmpty:()Z
            ifne 31
        10: .line 73
            aload 3 /* dnsUrls */
            ldc " "
            invokevirtual java.lang.String.split:(Ljava/lang/String;)[Ljava/lang/String;
            astore 4 /* servers */
        start local 4 // java.lang.String[] servers
        11: .line 74
            aload 4 /* servers */
            dup
            astore 8
            arraylength
            istore 7
            iconst_0
            istore 6
            goto 28
      StackMap locals: java.util.List java.util.Hashtable javax.naming.directory.DirContext java.lang.String java.lang.String[] top int int java.lang.String[]
      StackMap stack:
        12: aload 8
            iload 6
            aaload
            astore 5 /* server */
        start local 5 // java.lang.String server
        13: .line 76
            new java.net.URI
            dup
            aload 5 /* server */
            invokespecial java.net.URI.<init>:(Ljava/lang/String;)V
            astore 9 /* uri */
        start local 9 // java.net.URI uri
        14: .line 77
            new java.net.URI
            dup
            aload 5 /* server */
            invokespecial java.net.URI.<init>:(Ljava/lang/String;)V
            invokevirtual java.net.URI.getHost:()Ljava/lang/String;
            astore 10 /* host */
        start local 10 // java.lang.String host
        15: .line 79
            aload 10 /* host */
            ifnull 16
            aload 10 /* host */
            invokevirtual java.lang.String.isEmpty:()Z
            ifeq 20
        16: .line 80
      StackMap locals: java.util.List java.util.Hashtable javax.naming.directory.DirContext java.lang.String java.lang.String[] java.lang.String int int java.lang.String[] java.net.URI java.lang.String
      StackMap stack:
            getstatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.logger:Lio/netty/util/internal/logging/InternalLogger;
        17: .line 81
            ldc "Skipping a nameserver URI as host portion could not be extracted: {}"
            aload 5 /* server */
        18: .line 80
            invokeinterface io.netty.util.internal.logging.InternalLogger.debug:(Ljava/lang/String;Ljava/lang/Object;)V
        19: .line 83
            goto 27
        20: .line 85
      StackMap locals:
      StackMap stack:
            aload 9 /* uri */
            invokevirtual java.net.URI.getPort:()I
            istore 11 /* port */
        start local 11 // int port
        21: .line 86
            aload 0 /* defaultNameServers */
            aload 9 /* uri */
            invokevirtual java.net.URI.getHost:()Ljava/lang/String;
            iload 11 /* port */
            iconst_m1
            if_icmpne 22
            bipush 53
            goto 23
      StackMap locals: java.util.List java.util.Hashtable javax.naming.directory.DirContext java.lang.String java.lang.String[] java.lang.String int int java.lang.String[] java.net.URI java.lang.String int
      StackMap stack: java.util.List java.lang.String
        22: iload 11 /* port */
      StackMap locals: java.util.List java.util.Hashtable javax.naming.directory.DirContext java.lang.String java.lang.String[] java.lang.String int int java.lang.String[] java.net.URI java.lang.String int
      StackMap stack: java.util.List java.lang.String int
        23: invokestatic io.netty.util.internal.SocketUtils.socketAddress:(Ljava/lang/String;I)Ljava/net/InetSocketAddress;
            invokeinterface java.util.List.add:(Ljava/lang/Object;)Z
            pop
        end local 11 // int port
        end local 10 // java.lang.String host
        end local 9 // java.net.URI uri
        24: .line 87
            goto 27
      StackMap locals: java.util.List java.util.Hashtable javax.naming.directory.DirContext java.lang.String java.lang.String[] java.lang.String int int java.lang.String[]
      StackMap stack: java.net.URISyntaxException
        25: astore 9 /* e */
        start local 9 // java.net.URISyntaxException e
        26: .line 88
            getstatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.logger:Lio/netty/util/internal/logging/InternalLogger;
            ldc "Skipping a malformed nameserver URI: {}"
            aload 5 /* server */
            aload 9 /* e */
            invokeinterface io.netty.util.internal.logging.InternalLogger.debug:(Ljava/lang/String;Ljava/lang/Object;Ljava/lang/Object;)V
        end local 9 // java.net.URISyntaxException e
        end local 5 // java.lang.String server
        27: .line 74
      StackMap locals: java.util.List java.util.Hashtable javax.naming.directory.DirContext java.lang.String java.lang.String[] top int int java.lang.String[]
      StackMap stack:
            iinc 6 1
      StackMap locals:
      StackMap stack:
        28: iload 6
            iload 7
            if_icmplt 12
        end local 4 // java.lang.String[] servers
        end local 3 // java.lang.String dnsUrls
        end local 2 // javax.naming.directory.DirContext ctx
        29: .line 92
            goto 31
      StackMap locals: java.util.List java.util.Hashtable
      StackMap stack: javax.naming.NamingException
        30: pop
        31: .line 96
      StackMap locals:
      StackMap stack:
            aload 0 /* defaultNameServers */
            invokeinterface java.util.List.isEmpty:()Z
            ifeq 44
        32: .line 98
            ldc "sun.net.dns.ResolverConfiguration"
            invokestatic java.lang.Class.forName:(Ljava/lang/String;)Ljava/lang/Class;
            astore 2 /* configClass */
        start local 2 // java.lang.Class configClass
        33: .line 99
            aload 2 /* configClass */
            ldc "open"
            iconst_0
            anewarray java.lang.Class
            invokevirtual java.lang.Class.getMethod:(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;
            astore 3 /* open */
        start local 3 // java.lang.reflect.Method open
        34: .line 100
            aload 2 /* configClass */
            ldc "nameservers"
            iconst_0
            anewarray java.lang.Class
            invokevirtual java.lang.Class.getMethod:(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;
            astore 4 /* nameservers */
        start local 4 // java.lang.reflect.Method nameservers
        35: .line 101
            aload 3 /* open */
            aconst_null
            iconst_0
            anewarray java.lang.Object
            invokevirtual java.lang.reflect.Method.invoke:(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
            astore 5 /* instance */
        start local 5 // java.lang.Object instance
        36: .line 104
            aload 4 /* nameservers */
            aload 5 /* instance */
            iconst_0
            anewarray java.lang.Object
            invokevirtual java.lang.reflect.Method.invoke:(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.util.List
            astore 6 /* list */
        start local 6 // java.util.List list
        37: .line 105
            aload 6 /* list */
            invokeinterface java.util.List.iterator:()Ljava/util/Iterator;
            astore 8
            goto 41
      StackMap locals: java.util.List java.util.Hashtable java.lang.Class java.lang.reflect.Method java.lang.reflect.Method java.lang.Object java.util.List top java.util.Iterator
      StackMap stack:
        38: aload 8
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast java.lang.String
            astore 7 /* a */
        start local 7 // java.lang.String a
        39: .line 106
            aload 7 /* a */
            ifnull 41
        40: .line 107
            aload 0 /* defaultNameServers */
            new java.net.InetSocketAddress
            dup
            aload 7 /* a */
            invokestatic io.netty.util.internal.SocketUtils.addressByName:(Ljava/lang/String;)Ljava/net/InetAddress;
            bipush 53
            invokespecial java.net.InetSocketAddress.<init>:(Ljava/net/InetAddress;I)V
            invokeinterface java.util.List.add:(Ljava/lang/Object;)Z
            pop
        end local 7 // java.lang.String a
        41: .line 105
      StackMap locals:
      StackMap stack:
            aload 8
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 38
        end local 6 // java.util.List list
        end local 5 // java.lang.Object instance
        end local 4 // java.lang.reflect.Method nameservers
        end local 3 // java.lang.reflect.Method open
        end local 2 // java.lang.Class configClass
        42: .line 110
            goto 44
      StackMap locals: java.util.List java.util.Hashtable
      StackMap stack: java.lang.Exception
        43: pop
        44: .line 116
      StackMap locals:
      StackMap stack:
            aload 0 /* defaultNameServers */
            invokeinterface java.util.List.isEmpty:()Z
            ifne 50
        45: .line 117
            getstatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.logger:Lio/netty/util/internal/logging/InternalLogger;
            invokeinterface io.netty.util.internal.logging.InternalLogger.isDebugEnabled:()Z
            ifeq 65
        46: .line 118
            getstatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.logger:Lio/netty/util/internal/logging/InternalLogger;
        47: .line 119
            ldc "Default DNS servers: {} (sun.net.dns.ResolverConfiguration)"
            aload 0 /* defaultNameServers */
        48: .line 118
            invokeinterface io.netty.util.internal.logging.InternalLogger.debug:(Ljava/lang/String;Ljava/lang/Object;)V
        49: .line 121
            goto 65
        50: .line 125
      StackMap locals:
      StackMap stack:
            invokestatic io.netty.util.NetUtil.isIpV6AddressesPreferred:()Z
            ifne 52
        51: .line 126
            getstatic io.netty.util.NetUtil.LOCALHOST:Ljava/net/InetAddress;
            instanceof java.net.Inet6Address
            ifeq 57
            invokestatic io.netty.util.NetUtil.isIpV4StackPreferred:()Z
            ifne 57
        52: .line 128
      StackMap locals:
      StackMap stack:
            aload 0 /* defaultNameServers */
            iconst_2
            anewarray java.net.InetSocketAddress
            dup
            iconst_0
        53: .line 129
            ldc "2001:4860:4860::8888"
            bipush 53
            invokestatic io.netty.util.internal.SocketUtils.socketAddress:(Ljava/lang/String;I)Ljava/net/InetSocketAddress;
            aastore
            dup
            iconst_1
        54: .line 130
            ldc "2001:4860:4860::8844"
            bipush 53
            invokestatic io.netty.util.internal.SocketUtils.socketAddress:(Ljava/lang/String;I)Ljava/net/InetSocketAddress;
            aastore
        55: .line 127
            invokestatic java.util.Collections.addAll:(Ljava/util/Collection;[Ljava/lang/Object;)Z
            pop
        56: .line 131
            goto 61
        57: .line 133
      StackMap locals:
      StackMap stack:
            aload 0 /* defaultNameServers */
            iconst_2
            anewarray java.net.InetSocketAddress
            dup
            iconst_0
        58: .line 134
            ldc "8.8.8.8"
            bipush 53
            invokestatic io.netty.util.internal.SocketUtils.socketAddress:(Ljava/lang/String;I)Ljava/net/InetSocketAddress;
            aastore
            dup
            iconst_1
        59: .line 135
            ldc "8.8.4.4"
            bipush 53
            invokestatic io.netty.util.internal.SocketUtils.socketAddress:(Ljava/lang/String;I)Ljava/net/InetSocketAddress;
            aastore
        60: .line 132
            invokestatic java.util.Collections.addAll:(Ljava/util/Collection;[Ljava/lang/Object;)Z
            pop
        61: .line 138
      StackMap locals:
      StackMap stack:
            getstatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.logger:Lio/netty/util/internal/logging/InternalLogger;
            invokeinterface io.netty.util.internal.logging.InternalLogger.isWarnEnabled:()Z
            ifeq 65
        62: .line 139
            getstatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.logger:Lio/netty/util/internal/logging/InternalLogger;
        63: .line 140
            ldc "Default DNS servers: {} (Google Public DNS as a fallback)"
            aload 0 /* defaultNameServers */
        64: .line 139
            invokeinterface io.netty.util.internal.logging.InternalLogger.warn:(Ljava/lang/String;Ljava/lang/Object;)V
        65: .line 144
      StackMap locals:
      StackMap stack:
            aload 0 /* defaultNameServers */
            invokestatic java.util.Collections.unmodifiableList:(Ljava/util/List;)Ljava/util/List;
            putstatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.DEFAULT_NAME_SERVER_LIST:Ljava/util/List;
        66: .line 145
            aload 0 /* defaultNameServers */
            aload 0 /* defaultNameServers */
            invokeinterface java.util.List.size:()I
            anewarray java.net.InetSocketAddress
            invokeinterface java.util.List.toArray:([Ljava/lang/Object;)[Ljava/lang/Object;
            checkcast java.net.InetSocketAddress[]
            putstatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.DEFAULT_NAME_SERVER_ARRAY:[Ljava/net/InetSocketAddress;
        67: .line 146
            getstatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.DEFAULT_NAME_SERVER_ARRAY:[Ljava/net/InetSocketAddress;
            invokestatic io.netty.resolver.dns.DnsServerAddresses.sequential:([Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
            putstatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.DEFAULT_NAME_SERVERS:Lio/netty/resolver/dns/DnsServerAddresses;
        end local 1 // java.util.Hashtable env
        end local 0 // java.util.List defaultNameServers
        68: .line 147
            return
      LocalVariableTable:
        Start  End  Slot                Name  Signature
            4   68     0  defaultNameServers  Ljava/util/List<Ljava/net/InetSocketAddress;>;
            5   68     1                 env  Ljava/util/Hashtable<Ljava/lang/String;Ljava/lang/String;>;
            8   29     2                 ctx  Ljavax/naming/directory/DirContext;
            9   29     3             dnsUrls  Ljava/lang/String;
           11   29     4             servers  [Ljava/lang/String;
           13   27     5              server  Ljava/lang/String;
           14   24     9                 uri  Ljava/net/URI;
           15   24    10                host  Ljava/lang/String;
           21   24    11                port  I
           26   27     9                   e  Ljava/net/URISyntaxException;
           33   42     2         configClass  Ljava/lang/Class<*>;
           34   42     3                open  Ljava/lang/reflect/Method;
           35   42     4         nameservers  Ljava/lang/reflect/Method;
           36   42     5            instance  Ljava/lang/Object;
           37   42     6                list  Ljava/util/List<Ljava/lang/String;>;
           39   41     7                   a  Ljava/lang/String;
      Exception table:
        from    to  target  type
          13    19      25  Class java.net.URISyntaxException
          20    24      25  Class java.net.URISyntaxException
           7    29      30  Class javax.naming.NamingException
          32    42      43  Class java.lang.Exception

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider this
         0: .line 149
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 150
            return
        end local 0 // io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/netty/resolver/dns/DefaultDnsServerAddressStreamProvider;

  public io.netty.resolver.dns.DnsServerAddressStream nameServerAddressStream(java.lang.String);
    descriptor: (Ljava/lang/String;)Lio/netty/resolver/dns/DnsServerAddressStream;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider this
        start local 1 // java.lang.String hostname
         0: .line 154
            getstatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.DEFAULT_NAME_SERVERS:Lio/netty/resolver/dns/DnsServerAddresses;
            invokevirtual io.netty.resolver.dns.DnsServerAddresses.stream:()Lio/netty/resolver/dns/DnsServerAddressStream;
            areturn
        end local 1 // java.lang.String hostname
        end local 0 // io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    1     0      this  Lio/netty/resolver/dns/DefaultDnsServerAddressStreamProvider;
            0    1     1  hostname  Ljava/lang/String;
    MethodParameters:
          Name  Flags
      hostname  

  public static java.util.List<java.net.InetSocketAddress> defaultAddressList();
    descriptor: ()Ljava/util/List;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 163
            getstatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.DEFAULT_NAME_SERVER_LIST:Ljava/util/List;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    Signature: ()Ljava/util/List<Ljava/net/InetSocketAddress;>;

  public static io.netty.resolver.dns.DnsServerAddresses defaultAddresses();
    descriptor: ()Lio/netty/resolver/dns/DnsServerAddresses;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 178
            getstatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.DEFAULT_NAME_SERVERS:Lio/netty/resolver/dns/DnsServerAddresses;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  static java.net.InetSocketAddress[] defaultAddressArray();
    descriptor: ()[Ljava/net/InetSocketAddress;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 186
            getstatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.DEFAULT_NAME_SERVER_ARRAY:[Ljava/net/InetSocketAddress;
            invokevirtual java.net.InetSocketAddress[].clone:()Ljava/lang/Object;
            checkcast java.net.InetSocketAddress[]
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "DefaultDnsServerAddressStreamProvider.java"
/

io.netty/ netty-all/ 4.1.25.Final/ io/netty/resolver/dns/DefaultDnsServerAddressStreamProvider.class
