Patent ID: 8625448

Claim:
A non-transitory computer readable storage medium having computer readable program code embodied therein, the computer readable program code adapted to, when executed by a processor, implement a method, the method comprising: generating a first packet for sending to a first packet receiver by a first route; inserting a first session identifier into a payload of the first packet, wherein the first session identifier identifies a first session of the first packet receiver; sending the first packet with the first session identifier to a packet classifier; sending a first copy packet to a first expect queue, wherein the first copy packet is a duplicate of the first packet with the first session identifier; receiving the first packet with the first session identifier by the packet classifier; classifying the first packet with the first session identifier by the packet classifier to obtain a first classified packet; extracting the first session identifier from the first classified packet to obtain a first extracted session identifier; and determining whether the first extracted session identifier matches the first session identifier.