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44 lines
1.3 KiB
Text
44 lines
1.3 KiB
Text
##! This script handles core generated connection related "weird" events to
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##! push weird information about connections into the weird framework.
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##! For live operational deployments, this can frequently cause load issues
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##! due to large numbers of these events and quite possibly shouldn't be
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##! loaded.
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@load base/frameworks/notice
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module Conn;
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export {
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redef enum Notice::Type += {
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## Possible evasion; usually just chud.
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Retransmission_Inconsistency,
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## Could mean packet drop; could also be chud.
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Ack_Above_Hole,
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## Data has sequence hole; perhaps due to filtering.
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Content_Gap,
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};
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}
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event rexmit_inconsistency(c: connection, t1: string, t2: string)
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{
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NOTICE([$note=Retransmission_Inconsistency,
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$conn=c,
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$msg=fmt("%s rexmit inconsistency (%s) (%s)",
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id_string(c$id), t1, t2),
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$identifier=fmt("%s", c$id)]);
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}
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event ack_above_hole(c: connection)
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{
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NOTICE([$note=Ack_Above_Hole, $conn=c,
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$msg=fmt("%s ack above a hole", id_string(c$id))]);
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}
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event content_gap(c: connection, is_orig: bool, seq: count, length: count)
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{
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NOTICE([$note=Content_Gap, $conn=c,
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$msg=fmt("%s content gap (%s %d/%d)%s",
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id_string(c$id), is_orig ? ">" : "<", seq, length,
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is_external_connection(c) ? " [external]" : "")]);
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}
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