Crate microdns

Expand description

§microdns

A minimal DNS resolver library using only the Rust standard library.

This crate provides functionality to resolve various DNS record types, including MX records for mail servers and A/AAAA records for IP addresses.

§Example

use microdns::{lookup_mx_records, lookup_ip_addresses, resolve_mx_server_ips};

fn main() -> Result<(), microdns::Error> {
    let domain = "google.com";
     
    // Get MX records
    let mx_records = lookup_mx_records(domain)?;
     
    // Get IP addresses for a specific hostname
    let ips = lookup_ip_addresses("smtp.google.com")?;
     
    // Or resolve all MX servers to their IPs
    let server_ips = resolve_mx_server_ips(domain)?;
     
    Ok(())
}

Structs§

DnsConfig: DNS query configuration
DnsHeader: DNS header structure
DnsRecord: DNS record structure
MxRecord: MX record structure
ServerIpRecord: Server with resolved IP addresses

Enums§

Error: Error type for DNS operations
RecordData: DNS record data variants

Constants§

DEFAULT_DNS_SERVERS: Default DNS servers to try (in order)
DNS_TYPE_A: DNS record type constants
DNS_TYPE_AAAA
DNS_TYPE_MX

Functions§

build_dns_query: Build DNS query packet
lookup_dns_records: Send DNS query and get response using the specified configuration
lookup_ip_addresses: Lookup IP addresses for a hostname
lookup_ip_addresses_with_config: Lookup IP addresses for a hostname with custom configuration
lookup_mx_records: Lookup MX records for a domain
lookup_mx_records_with_config: Lookup MX records for a domain with custom configuration
parse_answer: Parse DNS answer record
parse_dns_header: Parse DNS header from buffer
parse_dns_name: Parse DNS name from buffer
parse_ip_records: Parse IP records from DNS response
parse_mx_records: Parse MX records from DNS response
resolve_mx_server_ips: Resolve MX records to their IP addresses
resolve_mx_server_ips_with_config: Resolve MX records to their IP addresses with custom configuration
skip_question: Skip DNS question section