[Msrp] File Sharing using MSRP
Can you please help me on the concept on File Sharing using MSRP.
I have the following idea:
MSRP can be used with Content Indirection and other File Transfer
Protocols like TFTP/HTTP to achive File Transfer in SIP
We have the File name say, photo.jpg and initimate it to the other side
through Content Indirection using MSRP as:
MSRP a786hjs2 SEND
To-Path: msrp://biloxi.example.com:12763/kjhd37s2s2;tcp
From-Path: msrp://atlanta.example.com:7654/jshA7we;tcp
Message-ID: 8765
Content-Type: message/external-body;
ACCESS-TYPE=URL;
URL="http://www.example.net/photo.jpg;
EXPIRATION="Sat, 20 Jun 2002 12:00:00 GMT";
size=231
Content-Type: image/jpg
-------a786hjs2$
The other end if it is ready to receive the file photo.jpg, sends 200 ok
else sends 413 or other apt. error code.
After receiving a 200 OK Response, how can we transfer the file using
TFTP/any other protocol.
Will it be a good idea to do SIP Invite and do the File Transfer as:
INVITE sip:bob@xxxxxxxxxxxxxxxxxxx SIP/2.0
To: <sip:bob@xxxxxxxxxxxxxxxxxx>
From: <sip:alice@xxxxxxxxxxxxxxxxxxx>;tag=786
Call-ID: 3413an89KU
Content-Type: application/sdp
v=0
o=- 0 0 IN IP4 209.179.2.62
s=
c=IN IP4 atlanta.example.com
m=data 1960 udp
here 1960 - Port No. of FSP Server (FSP - file Service Protocol used for
file transfer using UDP).
The other end replies similarly with 200 ok and media line having the port
no of the FSP Client
After finishing content transfer they send BYE and terminate.
Will this idea work out.?? Please do give our inputs on this.
Thanks in advance.
Regds,
Sudha
