sync: XMPP Serverless Messaging

[skm-ma-ws1314.git] / dns-extensions.tex

diff --git a/dns-extensions.tex b/dns-extensions.tex
index 527545f..c4c84e3 100644 (file)
--- a/dns-extensions.tex
+++ b/dns-extensions.tex
@@ -13,9 +13,10 @@ by the IETF Zeroconf working group.
 \term{Multicast DNS}~\cite{rfc6762} (mDNS) describes an extension to the Domain
 Name System that allows DNS resource records to be distributed on multiple hosts
 in a network, therefore avoiding central authorities and enabling every host to
 \term{Multicast DNS}~\cite{rfc6762} (mDNS) describes an extension to the Domain
 Name System that allows DNS resource records to be distributed on multiple hosts
 in a network, therefore avoiding central authorities and enabling every host to

-publish its own entries.
+publish its own entries. For that purpose, a special domain, usually
+named \code{.local}, is used.

 
 

-Software that supports resolution of mDNS records listens on the reserved
+Software that supports mDNS listens on the reserved

 link-local multicast address \code{224.0.0.251} (for IPv4 queries) or
 \code{FF02::FB} (for IPv6 queries) on UDP port 5353 for incoming queries.
 Queries sent to those multicast address and port are standard DNS queries.
 link-local multicast address \code{224.0.0.251} (for IPv4 queries) or
 \code{FF02::FB} (for IPv6 queries) on UDP port 5353 for incoming queries.
 Queries sent to those multicast address and port are standard DNS queries.


@@ -46,7 +47,7 @@ process of browsing for all XMPP clients in the domain \code{example.org}.
 This is a two-step process, consisting of \term{Service Instance Enumeration}
 and \term{Service Instance Resolution}.
 
 This is a two-step process, consisting of \term{Service Instance Enumeration}
 and \term{Service Instance Resolution}.
 

-\begin{figure}[htop]
+\begin{figure}[top]

   \centering
   \includegraphics[width=0.9\textwidth]{dnssd-mock.jpg}
   \caption{DNS-SD: Service Instance Enumeration and Resolution
   \centering
   \includegraphics[width=0.9\textwidth]{dnssd-mock.jpg}
   \caption{DNS-SD: Service Instance Enumeration and Resolution