$ node createReadStream
data : <Buffer ec a0 80 eb 8a 94 20 ec a1 b0 ea b8 88 ec 94 a9> 16
data : <Buffer 20 ec a1 b0 ea b8 88 ec 94 a9 20 eb 82 98 eb 88> 16
data : <Buffer a0 ec 84 9c 20 ec a0 84 eb 8b ac eb 90 a9 eb 8b> 16
data : <Buffer 88 eb 8b a4 2e 20 eb 82 98 eb 88 a0 ec a7 84 20> 16
data : <Buffer ec a1 b0 ea b0 81 ec 9d 84 20 63 68 75 6e 6b eb> 16
data : <Buffer 9d bc ea b3 a0 20 eb b6 80 eb a6 85 eb 8b 88 eb> 16
data : <Buffer 8b a4 2e> 3
end : 저는 조금씩 조금씩 나눠서 전달됩니다. 나눠진 조각을 chunk라고 부릅니다.