gen_tcp:send failing silently

Ulf Wiger <>
Mon Feb 23 11:11:55 CET 2004


On Sun, 22 Feb 2004 20:46:26 -0500, <> wrote:

> I have coded a custom supervisor process to manage the 3 process (I have 
> yet to pick up on OTP).  I used link() to link my workers to my 
> supervisor,
> expecting the supervisor would receive {'EXIT'...} when other processes
> failed.  I was missing the process_flag(trap_exit, true) call.  Because 
> all my processes were linked, when the connection was failing, all my 
> processes died without any error...

A later message indicates that you solved this problem.
For future reference, if you spawn your processes using
proc_lib:spawn_link(M,F,A), you will get nicely formatted crash reports
when something goes wrong. This assumes that the OTP application SASL
is running (either call application:start(sasl,permanent) from the
command line or some program, or use 'erl -boot start_sasl')


/Uffe
-- 
Ulf Wiger, Senior System Architect
EAB/UPD/S

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