Package org.fisco.bcos.sdk.rlp

Class RlpDecoder

java.lang.Object
org.fisco.bcos.sdk.rlp.RlpDecoder
public final class RlpDecoder
extends java.lang.Object
Recursive Length Prefix (RLP) decoder.

  • Field Summary

    Fields 
    Modifier and Type Field Description
    static int OFFSET_LONG_LIST
    [0xf7] If the total payload of a list is more than 55 bytes long, the RLP encoding consists of a single byte with value 0xf7 plus the length of the length of the list in binary form, followed by the length of the list, followed by the concatenation of the RLP encodings of the items.
    static int OFFSET_LONG_STRING
    [0xb7] If a string is more than 55 bytes long, the RLP encoding consists of a single byte with value 0xb7 plus the length of the length of the string in binary form, followed by the length of the string, followed by the string.
    static int OFFSET_SHORT_LIST
    [0xc0] If the total payload of a list (i.e.
    static int OFFSET_SHORT_STRING
    [0x80] If a string is 0-55 bytes long, the RLP encoding consists of a single byte with value 0x80 plus the length of the string followed by the string.

  • Method Summary

    Modifier and Type Method Description
    static RlpList decode​(byte[] rlpEncoded)
    Parse wire byte[] message into RLP elements.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • OFFSET_SHORT_STRING

      public static int OFFSET_SHORT_STRING
      [0x80] If a string is 0-55 bytes long, the RLP encoding consists of a single byte with value 0x80 plus the length of the string followed by the string. The range of the first byte is thus [0x80, 0xb7].

    • OFFSET_LONG_STRING

      public static int OFFSET_LONG_STRING
      [0xb7] If a string is more than 55 bytes long, the RLP encoding consists of a single byte with value 0xb7 plus the length of the length of the string in binary form, followed by the length of the string, followed by the string. For example, a length-1024 string would be encoded as \xb9\x04\x00 followed by the string. The range of the first byte is thus [0xb8, 0xbf].

    • OFFSET_SHORT_LIST

      public static int OFFSET_SHORT_LIST
      [0xc0] If the total payload of a list (i.e. the combined length of all its items) is 0-55 bytes long, the RLP encoding consists of a single byte with value 0xc0 plus the length of the list followed by the concatenation of the RLP encodings of the items. The range of the first byte is thus [0xc0, 0xf7].

    • OFFSET_LONG_LIST

      public static int OFFSET_LONG_LIST
      [0xf7] If the total payload of a list is more than 55 bytes long, the RLP encoding consists of a single byte with value 0xf7 plus the length of the length of the list in binary form, followed by the length of the list, followed by the concatenation of the RLP encodings of the items. The range of the first byte is thus [0xf8, 0xff].

  • Method Details

    • decode

      public static RlpList decode​(byte[] rlpEncoded)
      Parse wire byte[] message into RLP elements.
      Parameters:
      rlpEncoded - - RLP encoded byte-array
      Returns:
      recursive RLP structure