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# Debugging binder and bindings
When compiled with the symbol AGL_DEVEL defined, the ***binder***
understand the 2 configuration variables:
- AFB_DEBUG_BREAK: to emit interrupts
- AFB_DEBUG_WAIT: to wait interrupts
To use these variables, assign it the list of break or wait points
to reach.
Example:
```bash
$ AFB_DEBUG_BREAK=main-entry AFB_DEBUG_WAIT=start-load,start-exec afb-daemon ....
```
This tells to ***afb-daemon*** to break at the point **main-entry** and to
wait at the points **start-load** and **start-exec**.
The items of the list can be separated using comma, space, tab or new-line.
The break/wait points are, in the order of their occurence:
- main-entry: before decode arguments
- main-args: before daemon setup
- main-start: before starting jobs
- start-entry: before initialisation of sessions and hooks
- start-load: before load and pre-init of bindings
- start-start: before init of bindings
- start-http: before start of http server
- start-call: before execution of requests of the command line (option --call)
- start-exec: before execution of child preocees
Note also that a call to 'personality' is inserted just after
the point start-start.
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