nl_tokens: 获取签名并发起请求
pl_tokens: function submitRequest ( params , callback ) { var self = this ; // 处理 headers ! params . headers && ( params . headers = { } ) ; // 处理 query ! params . qs && ( params . qs = { } ) ; params . VersionId && ( params . qs . versionId = params . VersionId ) ; params . qs = util . clearKey ( params . qs ) ; // 清理 undefined 和 null 字段 params . headers && ( params . headers = util . clearKey ( params . headers ) ) ; params . qs && ( params . qs = util . clearKey ( params . qs ) ) ; var Query = util . clone ( params . qs ) ; params . action && ( Query [ params . action ] = '' ) ; var next = function ( tryIndex ) { var oldClockOffset = self . options . SystemClockOffset ; getAuthorizationAsync . call ( self , { Bucket : params . Bucket || '' , Region : params . Region || '' , Method : params . method , Key : params . Key , Query : Query , Headers : params . headers , Action : params . Action , ResourceKey : params . ResourceKey , Scope : params . Scope , } , function ( err , AuthData ) { params . AuthData = AuthData ; _submitRequest . <mask> ( self , params , function ( err , data ) { if ( err && tryIndex < 2 && ( oldClockOffset !== self . options . SystemClockOffset || allowRetry . call ( self , err ) ) ) { if ( params . headers ) { delete params . headers . Authorization ; delete params . headers [ 'token' ] ; delete params . headers [ 'clientIP' ] ; delete params . headers [ 'clientUA' ] ; delete params . headers [ 'x-cos-security-token' ] ; } next ( tryIndex + 1 ) ; } else { callback ( err , data ) ; } } ) ; } ) ; } ; next ( 0 ) ; }