Method for enabling streaming of segmented content from a delivery node (610, 613, 614, 502) to a device comprising an HTTP adaptive streaming client, on the basis of a manifest file, said manifest file comprising one or more segment identifiers, said method comprising: said client selecting at least one segment identifier from said manifest file, said segment identifier identifying a segment that has not been requested by said client when said selecting is performed, characterized in that said method further comprises said device sending pre-announce information in a pre-announce message, wherein at least part of said pre-announce information is inserted in the header of said message; and/or, in the body of said message, said message being one of a HTTP HEAD or HTTP POST message, to the delivery node or a content delivery network beforehand for announcing that said segment may be requested by said client, said pre-announce information comprising said at least one segment identifier, said pre-announce information being further arranged for triggering said delivery node or said content delivery network to ensure availability of said segment when said at least one segment is requested, wherein ensuring availability of said segment further comprises: verifying whether the segment associated with said at least one segment identifier is ingested and/or stored on said delivery node or in said content delivery network; and, if said segment is not ingested and/or stored on said delivery node or in said content delivery network, storing said segment on said delivery node; or, if said segment is ingested and/or stored on said delivery node and/or in said content delivery network, maintaining the storage of said segment for a predetermined time period. said client selecting at least one segment identifier from said manifest file, said segment identifier identifying a segment that has not been requested by said client when said selecting is performed, characterized in that said method further comprises said device sending pre-announce information in a pre-announce message, wherein at least part of said pre-announce information is inserted in the header of said message; and/or, in the body of said message, said message being one of a HTTP HEAD or HTTP POST message, to the delivery node or a content delivery network beforehand for announcing that said segment may be requested by said client, said pre-announce information comprising said at least one segment identifier, said pre-announce information being further arranged for triggering said delivery node or said content delivery network to ensure availability of said segment when said at least one segment is requested, wherein ensuring availability of said segment further comprises: verifying whether the segment associated with said at least one segment identifier is ingested and/or stored on said delivery node or in said content delivery network; and, if said segment is not ingested and/or stored on said delivery node or in said content delivery network, storing said segment on said delivery node; or, if said segment is ingested and/or stored on said delivery node and/or in said content delivery network, maintaining the storage of said segment for a predetermined time period. verifying whether the segment associated with said at least one segment identifier is ingested and/or stored on said delivery node or in said content delivery network; and, if said segment is not ingested and/or stored on said delivery node or in said content delivery network, storing said segment on said delivery node; or, if said segment is ingested and/or stored on said delivery node and/or in said content delivery network, maintaining the storage of said segment for a predetermined time period.