Update TODO

TODO

@@ -1,11 +1,21 @@
 * Global
 
+- Known bugs
+   ° libconfuse bugs (Listener & Aggregator):
+   .   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=639074
+   .   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=639115
+- Rename some fields in the structures
+   ° start_time -> rx_time, first_rx_time
+- Eliminate remaining exit() calls to avoid memory leaks on exit.
 - Add option dump-configuration (displays the config & exits).
 - Makefiles:
    ° Translate comments & help.
    ° Merge Makefile and Makefile_atheros*. Use template makefiles,
    autohell, cmake…?
-- Use string for network exchanges?
+- Use a string for positioning requests
+   Instead of a binary packet, use a CSV string containing the request
+   information. This will allow easy developments of clients in other
+   languages.
 - Mark arguments as const in function headers if needed
    Mostly done in the owlps-positioning C++ code (should check that),
    but not constantly in C modules.
@@ -52,9 +62,17 @@
    Get rid of the "Cannot open configuration file" error, in quiet
    mode and when the default configuration file has to be used (no
    file specified by the user with -f).
-- Listen for autocalibration requests without sending requests?
+- Filter the number of implicit packets per mobile?
+   Currently, in passive or mixed mode, *all* the receive packets are
+   transmitted to the aggregator.
+- Option "read-only autocalibration"?
+   Listen for autocalibration requests without sending requests.
 - read_packet(): use ieee80211_header_size for all implicit packets
    Currently the size is corrected only for data packets.
+- BSD port
+   http://www.unixgarden.com/index.php/programmation/introduction-a-la-programmation-wifi-en-c-sous-netbsd
+- Use the "official" radiotap parser? (Expat license)
+   http://git.sipsolutions.net/?p=radiotap.git
 
 
 * Client
@@ -65,16 +83,35 @@
    Could be nice, but probably useless.
 
 
+* UDP to HTTP
+
+- Command-line options (port numbers, -v/-q, -h, -V).
+- Delete inactive clients after a given amount of time.
+- Refactor prepare_answer().
+
+
 * Positioning
 
 - Known bugs
    ° Cannot compute the error (Real) with autocalibration requests.
 
 - Algorithms
+   ° Add to the result the information "area error" (whether on not the
+   computed result is in the same room as the real position).
+   ° Delete reference points after a given amount of time. This is to
+   avoid meaningless old reference points, for instance if an AP was
+   shut down.
+   ° Handle the power and antenna gain difference between the
+   calibration mobile (or pseudo-mobile, for autocalibration) and the
+   mobile to position.
    ° MinMax: use a different step for X, Y and Z?
 
 - Autocalibration
    ° Generate reference points in 3D.
+   ° Check what happens with >4 APs, and fix it. We certainly should
+   select APs not only by the angle proximity, but also by the
+   distance proximity. Maybe implement three options: angle, distance,
+   and angle + distance.
    ° Handle 2 APs, not only >2 APs.
    ° Find why some CalibrationRequest were not deleted when
    calling Stock::delete_calibration_request() (via
@@ -108,7 +145,12 @@
    with relative path in owlps-positioning.cfg in the same directory).
 
 - Optimisation & code improvement
-   ° Multithread algorithm calls.
+   ° Multithreading:
+   .   algorithm (parallelize computation of the different algorithms
+   for the same request) ;
+   .   and/or requests (parallelize computation of several requests).
+   It would be possible (overkill?) to have a group of worker threads
+   and a job queue.
    ° ReferencePoint: the request list should be an unordered_set
    instead of a vector, to guarantee the unicity of the elements.
    ° Pre-allocate vectors' memory with reserve().