[erlang-questions] Tracing traffic between nodes
David Welton
davidnwelton@REDACTED
Mon Feb 3 17:53:47 CET 2014
The tricky thing seems to be that - if I'm interpreting things
correctly - there is no information on who we have received something
from. This looks like it might work with an Erlang remote node:
watch(RemoteNode) ->
dbg:start(),
Self = node(),
{ok, _TPid1} =
dbg:tracer(process,
{fun({trace, _Pid, send, What, {Process, Node}}, _Acc) when
Node == Self orelse Node == RemoteNode ->
io:format("{~p, ~p} ! ~p~n", [Process, Node, What]);
(_, _Acc) ->
ok
end,
[]}),
{ok, RemoteNode} = dbg:n(RemoteNode),
dbg:p(all, [s]).
But probably not with a C node.
Maybe the best thing is wireshark or something like that, and a bit of
code to dump the erlang messages from that...
--
David N. Welton
http://www.welton.it/davidw/
http://www.dedasys.com/
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