LYNC Web Conferencing 工作原理

Great info on Lync Client LoggingRegistry Keys
http://blogs.technet.com/b/rischwen/archive/2013/11/18/lync-2013-uccapi-logging-configuration.aspx

Start, Run, and Paste:
Lync 2013:
%LOCALAPPDATA%\Microsoft\Office\15.0\Lync\Tracing\
Lync 2010:
%UserProfile%\Tracing
Lync Windows 8 App:
%LOCALAPPDATA%\Packages\Microsoft.LyncMX_8wekyb3d8bbwe\LocalState\Tracing
Lync Web App (WebBrowser Plugin):
%LOCALAPPDATA%\Microsoft\LWAPlugin\Tracing

Following steps for how to read ETL files:1. Rename.etl file to sipstack.etl2. Copy itto the folder "c:\windows\tracing" on Lync FE server.3. Open"Lync Server 2010 Logging Tool", click "Analyze Log files",it will load sipstack.etl file from the folder"c:\windows\tracing".4. Check"SIPStack" in that box and click "Analyze" then itwill launch Snooper.exe to read those logs from .etl file.(Make sure LyncServer resource kit has been installed in Lync FE server.)

Protocolsused by Lync
http://blog.greenl.ee/2013/01/24/protocols-lync/

Deep dive:

http://msdn.microsoft.com/en-us/library/cc307432(v=office.12).aspxALL

http://msdn.microsoft.com/en-us/library/dd949502(v=office.12).aspx
http://msdn.microsoft.com/en-us/library/cc431491(v=office.12).aspx
http://tools.ietf.org/html/rfc4566
http://msdn.microsoft.com/en-us/library/cc431498(v=office.12).aspx
http://www.ietf.org/rfc/rfc3261.txtSIP
http://msdn.microsoft.com/en-us/library/ff595355(v=office.12).aspxPSOM

Standards Track[Page 8]

RFC 4566SDPJuly 2006

Session description

v=(protocol version)

o=(originator and session identifier)

s=(session name)

i=* (session information)

u=* (URI of description)

e=* (email address)

p=* (phone number)

c=* (connection information -- not required if included in

all media)

b=* (zero or more bandwidth information lines)

One or more time descriptions ("t=" and "r=" lines; see below)

z=* (time zone adjustments)

k=* (encryption key)

a=* (zero or more session attribute lines)

Zero or more media descriptions

Time description

t=(time the session is active)

r=* (zero or more repeat times)

Media description, if present

m=(media name and transport address)

i=* (media title)

c=* (connection information -- optional if included at

session level)

b=* (zero or more bandwidth information lines)

k=* (encryption key)

a=* (zero or more media attribute lines)

Web Conferencing Traffic Traversal
http://technet.microsoft.com/en-us/library/gg195797(v=ocs.14).aspx