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will message support

#include "global.h"
#include "mqttd.h"
#include "mqttd_calls.h"


inline int
srv_Socket(cfg_root_t * __restrict cfg)
{
	int s = -1;
	ait_val_t v;
	u_short port;
	io_sockaddr_t sa = {{ 0 }};

	ioTRACE(2);

	assert(cfg);

	cfg_loadAttribute(cfg, "mqttd", "port", &v, MQTT_PORT);
	port = strtol(AIT_GET_STR(&v), NULL, 0);
	AIT_FREE_VAL(&v);
	cfg_loadAttribute(cfg, "mqttd", "listen", &v, MQTT_HOST);
	if (!io_gethostbyname(AIT_GET_STR(&v), port, &sa)) {
		ioLIBERR(io);
		AIT_FREE_VAL(&v);
		return -1;
	} else
		AIT_FREE_VAL(&v);

	s = mqtt_srv_Create(&sa.sa, sa.sa.sa_len);
	if (s == -1) {
		ioLIBERR(mqtt);
		return -1;
	}

	return s;
}

inline int
srv_Close(int s)
{
	ioTRACE(2);

	return mqtt_srv_Destroy(s);
}

inline int
srv_Will(struct tagSession * __restrict sess)
{
	int ret = 0;

	ioTRACE(2);

	ret = mqtt_msgPUBLISH(sess->sess_buf, sess->sess_will.topic, 0xDEAD, 0, 1, 0, 
			sess->sess_will.msg, sess->sess_will.msg ? strlen(sess->sess_will.msg) : 0);
	if (ret == -1)
		return -1;	/* error */
	else
		return cmdPUBLISH(sess->sess_srv, ret, sess);
}