question: private int stripMultipartHeaders ( byte [ ] b , int offset ) { int i = 0 ; for ( i = offset ; i < b . length ; i ++ ) { if ( b [ i ] == '\r' && b [ ++ i ] == '\n' && b [ ++ i ] == '\r' && b [ ++ i ] == '\n' ) break ; } return i + 1 ; }
target:  It returns the offset separating multipart file headers from the file's data.