I'm a user of the wifi-presence openwrt package. It talks to hostapd over the control socket to know when people connect/disconnect from a given access point. My home networks recently grew to the point where the hostapd response to the STATUS message is larger than 1024 bytes, which causes wifi-presense to fail to parse the response. I filed a bug with details here: https://github.com/awilliams/wifi-presence/issues/30. What I don't understand is how to fix this bug. wifi-presence can increase its buffer size, but it seems to me that a better implementation would loop and keep reading until it gets to the end of hostapd's response. However, I haven't been able to find a mechanism in the protocol that allows a client to know if it has read a full response. I'd expect protocols like this to have a "content length" header, or a special delimiter that indicates the end of a response. I've read through the source code of the example program (hostapd/hostapd_cli.c), which hardcodes a buffer length of 4096 in _wpa_ctrl_command: static int _wpa_ctrl_command(struct wpa_ctrl *ctrl, const char *cmd, int print) { char buf[4096]; What's the correct way to handle this? Thanks, Jeremy _______________________________________________ Hostap mailing list Hostap@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/hostap
