Tests for the SIP Bake-Off
--------------------------

Parser tests:

   name-addr forms in To, From, Contact
   line-folding
   extra LWS around colons and semicolons
   case-insensitive headers
   address lookup (use of SRV, UDP/TCP ordering)

Parser robustness:
   missing or wrong (UDP) content length
   bogus request (random characters, partial request)

Basic INVITE: UAC to UAS without proxy
        Correct message formatting, with SDP
        UDP operation: response to address in Via
        TCP operation
        multiple requests in a UDP packet
        Exponential backoff on timers

BYE to terminate session

redirect server sends 300 to UAC, single Contact field

redirect server sends 300 to UAC, multiple Contact fields

400,500,600 responses understood by UAC

OPTIONS understood by UAS

Basic proxy
   Via insertion
   insert and parse branch parameter
   locally regenerated request retransmissions
   sends 100 response upstream
   sends local ACKs for non-200 responses
   doesn't retransmit 200 responses locally
   forwards ACKs for 200 responses

forking proxy, with non-200/600 response

forking proxy, with 600 response

forking proxy, with 200 response

forking proxy with multiple 200 responses

time limit on forking (tests Expires)

Max-Forwards

proxy with ACK sent direct

multicast REGISTER on start-up

REGISTER sent and accepted, registrar echoes current registration in
response

registration refreshed (tests Expires)

registration adds another Contact header

registration deletes all with Contact: *

loop detection

persistent TCP connections (multiple requests over one TCP connection)

request merging

re-INVITE's in user agents

multicast INVITE's

CANCEL understood by proxies/UAS

UAS doesn't cancel a call if INVITE response sent when CANCEL received

UTF-8 (maybe not)

multicast audio sessions

handles non-SDP payloads (doesn't need to parse it, just know it's not
SDP)

Require and Proxy-Require headers

SDP in ACK

non-standard method (should send Allow in response)

html or text in non-200 responses

non-SIP URL's in Contact headers

Canonicalization of requests and responses

security
  Via hiding
  encryption
  authentication

Header handling: (generate/parse)
Accept
Accept-Encoding
Accept-Language
Allow
Authorization
Call-ID
Contact
Content-Encoding
Content-Length
Content-Type
CSeq
Date
Encryption
Expires
From
Hide
Max-Forwards
Organization
Proxy-Authenticate
Proxy-Authorization
Proxy-Require
Priority
Require
Retry-After
Retry-After
Response-Key
Record-Route
Record-Route
Route
Server
Subject
Timestamp
To
Unsupported
User-Agent
Via
Warning
WWW-Authenticate