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aquatic_ws: twenty byte serde: improve comment

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Joakim Frostegård 2020-05-12 12:24:50 +02:00
parent 7155f493d9
commit e76b54e697
1 changed files with 6 additions and 2 deletions
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8
aquatic_ws/src/lib/protocol/serde_helpers.rs
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@ -30,8 +30,12 @@ impl<'de> Visitor<'de> for TwentyByteVisitor {
// var infoHash = 'abcd..'; // 40 hexadecimals // var infoHash = 'abcd..'; // 40 hexadecimals
// Buffer.from(infoHash, 'hex').toString('binary'); // Buffer.from(infoHash, 'hex').toString('binary');
// ``` // ```
// which seemingly produces a UTF16 string with each char having only // As I understand it:
// the "low byte" set. Here, we extract it by casting it to an u8. // - the code above produces a UTF16 string of 20 chars, each having
// only the "low byte" set (e.g., numeric value ranges from 0-255)
// - serde_json decodes this to string of 20 chars (tested), each in
// the aforementioned range (tested), so the bytes can be extracted
// by casting each char to u8.
let mut arr = [0u8; 20]; let mut arr = [0u8; 20];
let mut char_iter = value.chars(); let mut char_iter = value.chars();