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[DCCP]: Allow default/fallback service code.

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This has been discussed on dccp@vger and removes the necessity for applications
to supply service codes in each and every case.

If an application does not want to provide a service code, that's fine, it will
be given 0. Otherwise, service codes can be set via socket options as before.

This patch has been tested using various client/server configurations
(including listening on multiple service codes).

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
This commit is contained in:
Gerrit Renker
2006-09-22 09:33:58 +01:00
committed by Arnaldo Carvalho de Melo
parent 1ab9dd0902
commit 00e4d116a7
4 changed files with 7 additions and 21 deletions
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Documentation/networking/dccp.txt
+5 -3
View File
@@ -1,7 +1,6 @@
DCCP protocol
============
Last updated: 10 November 2005
Contents
========
@@ -42,8 +41,11 @@ Socket options
DCCP_SOCKOPT_PACKET_SIZE is used for CCID3 to set default packet size for
calculations.
DCCP_SOCKOPT_SERVICE sets the service. This is compulsory as per the
specification. If you don't set it you will get EPROTO.
DCCP_SOCKOPT_SERVICE sets the service. The specification mandates use of
service codes (RFC 4340, sec. 8.1.2); if this socket option is not set,
the socket will fall back to 0 (which means that no meaningful service code
is present). Connecting sockets set at most one service option; for
listening sockets, multiple service codes can be specified.
Notes
=====