Diff: udp/dns/dns.txt

Revision:

32:679654f2d023

Parent:

13:9cd54f7db57a

Child:

37:793b39683406

--- a/udp/dns/dns.txt	Fri Aug 11 17:41:52 2017 +0000
+++ b/udp/dns/dns.txt	Thu Aug 17 14:21:02 2017 +0000
@@ -1,21 +1,22 @@
-DNS
+DNS -- host name and domain name if network is IPv4
 client query O   unicast 53053 ->    53 QR=0
 client reply I   unicast 53053 <-    53 QR=1
 
-LLMNR
+LLMNR -- just the host name
 client query O multicast 53053 ->  5355 QR=0
 client reply I   unicast 53053 <-  5355 QR=1
 server query I multicast  5355 <- xxxxx QR=0
 server reply O   unicast  5355 -> xxxxx QR=1
 
-MDNS
+MDNS -- host name + '.local'
 client query O multicast  5353 ->  5353 QR=0
 client reply I multicast  5353 <-  5353 QR=1
 server query I multicast  5353 <-  5353 QR=0
 server reply O multicast  5353 ->  5353 QR=1
 
-ReceivedPacket(dnsProtocol, ...)
+Dns directs packets to DnsReply(receive) and DnsServer(receive and send) and polls for DnsQuery(send) packets
 
-ip6
-mdns
-dnsserverhandlequery
\ No newline at end of file
+DnsCache holds names against addresses and synchronises requests and replies.
+
+DnsHdr and DnsName are helper modules.
+