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MSRP Relays. Rohan Mahy ( [email protected] ) Cullen Jennings ([email protected]). Status and Changes. Document still contains inconsistencies Edited late at night with too little time

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MSRP Relays

Rohan Mahy ([email protected])

Cullen Jennings ([email protected])

status and changes
Status and Changes

Document still contains inconsistencies

Edited late at night with too little time

The new MSRP draft contains the changes to make the relay draft work. Tried to get MSRP relay draft fully aligned, but we missed a few spots

significant changes
Significant changes

Response/Report Handling


Use of TLS


response report handling
Response/Report Handling

responses to SEND requests (if appropriate) are hop-by-hop

responses to AUTH requests are end-to-end

REPORT requests have no responses


Client can use SRV to discover its relay, but in SDP always use explicit host, transport, port

Client which needs multiple relays, sends AUTH to each one from inside to out

Advertise your path

Get the remote path and add it to your path

Relay authorizes request based on path

When forwarding, Relay removes itself from To-Path and adds itself to From-Path


relay to relay is ALWAYS TLS with mutual authentication

client to its relay is ALWAYS TLS with Digest

foreign relay to client can be either TCP or TLS


Core protocol now supports chunking really well

Relays can rechunk a message to be bigger or smaller

if you send chunks over 2k, you have to be able to interrupt them

open issue refreshing auths
Open Issue: Refreshing AUTHs

Currently no way to refresh a URI that you got via AUTH

Proposal: Client periodically sends new AUTH requests. Client can send to a specific URI in the To-Path.

Need to work out details

next steps
Next Steps

Fix this to be consistent with base MSRP

Fix this to be consistent with itself :-)

What other changes are needed?