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Get Payload Length

function Packet_GetPayloadLength (dpiMsg, packet)
  require 'LOG'
  require 'HexString'

  if GetLatestApplication(dpiMsg) == "http" then
    -- Get ICMP type (byte 20 for IPv4 packets)
    local longPayloadThreshold = 20000
    local payloadLength = GetPayloadLength(packet)
    if payloadLength > longPayloadThreshold then
      EZINFO("Session: ", GetUuid(dpiMsg), ", long payload length: ", payloadLength)
      endPayload = GetPayloadString(packet, longPayloadThreshold, payloadLength-1)
      endPayloadHex = StringToHex(endPayload)
      EZINFO("Session: ", GetUuid(dpiMsg), ", end payload:\n", endPayloadHex)
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