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authorAnders Svensson <[email protected]>2015-03-25 07:21:46 +0100
committerAnders Svensson <[email protected]>2015-03-27 07:21:26 +0100
commit545ff7783cebddc2ca5b2af67a6f13b1a01a4d03 (patch)
treeaa5ea245e6bd77ee5df12e61f682a3f5903e270e /lib/diameter/test/diameter_config_SUITE.erl
parentaaff5f36b836c65a72fb38a27e31a88d199a3155 (diff)
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Add service_opt() incoming_maxlen
To bound the length of incoming messages that will be decoded. A message longer than the specified number of bytes is discarded. An incoming_maxlen_exceeded counter is incremented to make note of the occurrence. The motivation is to prevent a sufficiently malicious peer from generating significant load by sending long messages with many AVPs for diameter to decode. The 24-bit message length header accomodates (16#FFFFFF - 20) div 12 = 1398099 Unsigned32 AVPs for example, which the current record-valued decode is too slow with in practice. A bound of 16#FFFF bytes allows for 5461 small AVPs, which is probably more than enough for the majority of applications, but the default is the full 16#FFFFFF.
Diffstat (limited to 'lib/diameter/test/diameter_config_SUITE.erl')
-rw-r--r--lib/diameter/test/diameter_config_SUITE.erl3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/diameter/test/diameter_config_SUITE.erl b/lib/diameter/test/diameter_config_SUITE.erl
index ea77aa3716..bbdf672291 100644
--- a/lib/diameter/test/diameter_config_SUITE.erl
+++ b/lib/diameter/test/diameter_config_SUITE.erl
@@ -85,6 +85,9 @@
{string_decode,
[[true], [false]],
[[0], [x]]},
+ {incoming_maxlen,
+ [[0], [65536], [16#FFFFFF]],
+ [[-1], [1 bsl 24], [infinity], [false]]},
{spawn_opt,
[[[]], [[monitor, link]]],
[[false]]},