06_msgpack

Andrew Beyond edited this page Aug 13, 2018 · 1 revision

6. MsgPack

Specification of the message pack format can be found here: https://github.com/msgpack/msgpack/blob/master/spec.md

There are libraries written in the most common languages. You can download libraries from the official site: https://msgpack.org/

The following table provides information on how different types of data are encoded in the message pack.

format name first byte (in binary) first byte (in hex)
positive fixint 0xxxxxxx 0x00 - 0x7f
fixmap 1000xxxx 0x80 - 0x8f
fixarray 1001xxxx 0x90 - 0x9f
fixstr 101xxxxx 0xa0 - 0xbf
nil 11000000 0xc0
(never used) 11000001 0xc1
false 11000010 0xc2
true 11000011 0xc3
bin 8 11000100 0xc4
bin 16 11000101 0xc5
bin 32 11000110 0xc6
ext 8 11000111 0xc7
ext 16 11001000 0xc8
ext 32 11001001 0xc9
float 32 11001010 0xca
float 64 11001011 0xcb
uint 8 11001100 0xcc
uint 16 11001101 0xcd
uint 32 11001110 0xce
uint 64 11001111 0xcf
int 8 11010000 0xd0
int 16 11010001 0xd1
int 32 11010010 0xd2
int 64 11010011 0xd3
fixext 1 11010100 0xd4
fixext 2 11010101 0xd5
fixext 4 11010110 0xd6
fixext 8 11010111 0xd7
fixext 16 11011000 0xd8
str 8 11011001 0xd9
str 16 11011010 0xda
str 32 11011011 0xdb
array 16 11011100 0xdc
array 32 11011101 0xdd
map 16 11011110 0xde
map 32 11011111 0xdf
negative fixint 111xxxxx 0xe0 - 0xff
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