| 摘要 |
<p>The invention relates to a data collection device for monitoring streams in a data network using a packet transmission mode, including an extractor for extracting data contained in packets belonging to a stream defined by a transmitter, a receiver, and a protocol. The collection device also includes a syntax analyzer which receives data in real time from the extractor and breaks the data down into elements according to the syntactic rules of the protocol, said syntactic rules enabling the elements to be represented as a tree structure. The syntax analyzer combines respective tree state indicators with at least some of the elements, wherein the tree state indicator combined with an element locates said element within the tree structure. An interface transmits the tree state indicators, together with the elements with which the latter have been combined, to a stream analyzer external to the collection device.</p> |
