PM98381: REMOTE MRF(ALU) CAN NOT PARSE SIP HEADER WITH LOWERCASE PERCENT %3UA INSTEAD OF %3UA IN ROUTE HEADER URI

Fixes are available

APAR status

Closed as program error.

Error description

SIP Route header URI not parsed correctly by a remote machine
due to lower-case percent encoding

An application sends an Invite to a remote MRF machine (ALU),
containing the following route header:

<sip:conf=+14222410098_urn%3auuid%3afee82cc1-510e-490a-b164-
05083eb11f5d@[2001:1890:1001:2504::6]:5060>

The MRF machine cannot parse the URI due to lowercase letters in
the percent encoding, i.e. %3ua instead of %3UA.

According to RFC 3986:

quote:
6.2.2.1.  Case Normalization
For all URIs, the hexadecimal digits within a percent-encoding
triplet (e.g., "%3a" versus "%3A") are case-insensitive and
therefore should be normalized to use uppercase letters for
the digits A-F.
...
end quote.

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server V8.0 and V8.5.5 Session Initiation   *
*                  Protocol (SIP) container                    *
****************************************************************
* PROBLEM DESCRIPTION: The SIP Container uses lowercase        *
*                      letters when encoding the hexadecimal   *
*                      digits within a percent-encoding        *
*                      triplet.                                *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
The SIP container should use uppercase instead of lowercase
letters when encoding reserved characters like ":".

Problem conclusion

This fix changes the SIP container behavior to use uppercase
when encoding reserved characters like ":".
There is a new custom property "uri.percent.encoded.uppercase"
added to the fix and it should be set to true.
If the custom property is not set, the SIP Conatiner will use
lowercase, so the result of encoding of ":" will be "%3a", and
not "%3A" as per RFC.

The fix for this APAR is currently targeted for inclusion in
fix packs 8.0.0.8 and 8.5.5.2.  Please refer to the
Recommended Updates page for delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Temporary fix

Comments

APAR Information

APAR number
PM98381
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-10-03
Closed date
2013-11-05
Last modified date
2013-11-05

APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name
WEBS APP SERV N
Fixed component ID
5724H8800

Applicable component levels

R800 PSY
UP
R850 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 April 2022

Tips

PM98381: REMOTE MRF(ALU) CAN NOT PARSE SIP HEADER WITH LOWERCASE PERCENT %3UA INSTEAD OF %3UA IN ROUTE HEADER URI

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name

Fixed component ID

Applicable component levels

R800 PSY

R850 PSY

Document Information

Share your feedback

Need support?