nl_tokens: Get an expiry buffer .
pl_tokens: function expiry ( expires ) { var buffer , int64 ; if ( expires % 1000 === 0 ) { buffer = new Buffer ( 5 ) ; buffer . writeUInt8 ( 0xFD , 0 ) ; buffer . writeInt32LE ( expires / 1000 , 1 ) ; } else { buffer = new Buffer ( 9 ) ; int64 = new Int64 ( expires ) ; buffer . writeUInt8 ( 0xFC , 0 ) ; buffer . writeUInt32LE ( int64 . low32 ( ) , 1 ) ; <mask> . writeUInt32LE ( int64 . high32 ( ) , 5 ) ; } return buffer ; }