AIRPLAY SURVEY

TANG JIAN-HENG, COMPAL

Bonjour JmDNSBonjour

Service

Avahi

Network Protocol

Platform

iPhone / iPad Windows Mac OSX Linux Android

Platform and its service

DAAP RTSP RTSP

Bonjour

• Why– We want to discover available services and

choose one from a list, instead of having to know each service’s name or IP address in advance.

• What– Bonjour is Apple’s proposal for zero-

configuration networking over IP. • Self-assigned addressing • Multicast DNS(mDNS)• Service Discovery

DAAP

iOS Devices

Non-iOS Devices

RTSP

Bonjour JmDNS

Query by service type

response

Request IP address & domain name

Receive IP address

Request Response

Request domain name and port

Receive domain name and port

Publication

Discovery

Resolution

Register SRV Record

JmDNS

• Java implementation of mDNS.• Used for service registration and

discovery. • Compatible with Apple's Bonjour.

Start

Initial network

Set up buffer

Bonjour Emitter

True

Receive a packet

Parse DNS packet

DAAP

EndNo

Yes

Zeroconf registration

Bonjour JmDNS

DAAP

Request for server info

server info response

request mp3

stream'd mp3

Login

Login response

TVBox Applications

Framework

SystemLibraries

LinuxKernel

Android.netJava.netJavax.jmdns

Android.mediaJava.securityJavax.jmdns

Network Multimedia

mDNS

Android Libraries

Socket UDP | RTSP | DAAP

Services

iPad/iPhone

MediaDecode

JmDNS

Javax.jmdns

Discovery

iPad PC

Music Not support iTunes

Youtube Not support iTunes

Remote

(port 50287)

DAAP(HTTP) iTunes

(port 3689)

Photo

(port 50295)

HTTP Air Stream Media Player

(port 7000)

iPad PC

Music

(port 58277)

RTSP XBMC

(port 6000)

Youtube

(port 50866)

RTSP

Only voice

XBMC

(port 6000)

Remote Not support XBMC

Photo

(port 50379)

HTTP XBMC

(port 36667)

Services

• JmDNS• Socket• RTSP

Network

• Framework– Android.net– Java.net– Javax.jmdns

• Libraries– Android Libraries– JmDNS

• Technology– Socket programming

Multimedia

• Framework– Android.media– Android.security– Android.util– Javax.jmdns

• Libraries– Android Libraries– JmDNS

Multimedia(2)

• Functionality– Audio streaming– Video streaming– Photo streaming– Remote Control (play / pause / last / next /

volume)• Technology

– Audio Decode / Encode– Video Decode / Encode– Mirror

Protocol

• mDNS• DNS• Socket• TCP/IP• UDP• RAOP• RTSP• DACP