nl_tokens: 处理请求数据
pl_tokens: function handleReq ( req , data ) { var method = util . getMethod ( data . method || req . method ) ; req . method = method ; req . timeout = parseInt ( data . timeout , 10 ) ; extend ( req . headers , data . headers ) ; if ( typeof data . charset == 'string' ) { var type = req . headers [ 'content-type' ] ; var charset = '; charset=' + data . charset ; if ( typeof type == 'string' ) { req . headers [ 'content-type' ] = type . split ( ';' ) [ 0 ] + charset ; } else { req . headers [ 'content-type' ] = charset ; } } else { delete <mask> . charset ; } if ( ! util . hasRequestBody ( method ) ) { delete data . top ; delete data . bottom ; delete data . body ; delete req . headers [ 'content-length' ] ; } else if ( data . top || data . bottom || data . body ) { delete req . headers [ 'content-length' ] ; } util . isWhistleTransformData ( data ) && req . addZipTransform ( new WhistleTransform ( data ) ) ; }