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parse_dns_a_record

manycastr::worker::inbound::dns

Function parse_dns_a_record 

Source 
fn parse_dns_a_record(
    packet_bytes: &[u8],
    is_ipv6: bool,
    m_id: u32,
) -> Option<DnsResult>
Expand description

Attempts to parse the DNS A record from a DNS payload body.

§Arguments

  • packet_bytes - the bytes of the packet to parse
  • is_ipv6 - whether this is an IPv6 measurement
  • m_id - measurement ID to validate against the QNAME-encoded value

§Returns

  • Option<DnsResult> - the DNS result containing the DNS A record with the source port and source and destination addresses and whether it is a discovery packet

§Remarks

The function returns None if the packet is too short to contain a DNS A record, or if the measurement ID encoded in the QNAME does not match the current measurement.