version 1.1.2.3, 2012/05/01 01:12:16
|
version 1.1.2.6, 2012/05/09 13:48:31
|
Line 50 SUCH DAMAGE.
|
Line 50 SUCH DAMAGE.
|
* mqtt_cli_Open() - Open client connection to MQTT broker |
* mqtt_cli_Open() - Open client connection to MQTT broker |
* |
* |
* @addr = brokers address |
* @addr = brokers address |
|
* @timeout = timeout |
* return: NULL error or !=NULL connected to broker |
* return: NULL error or !=NULL connected to broker |
*/ |
*/ |
mqtt_cli_t * |
mqtt_cli_t * |
mqtt_cli_Open(struct sockaddr *addr) | mqtt_cli_Open(struct sockaddr *addr, u_short timeout) |
{ |
{ |
mqtt_cli_t *cli; |
mqtt_cli_t *cli; |
|
|
Line 67 mqtt_cli_Open(struct sockaddr *addr)
|
Line 68 mqtt_cli_Open(struct sockaddr *addr)
|
} else |
} else |
memset(cli, 0, sizeof(mqtt_cli_t)); |
memset(cli, 0, sizeof(mqtt_cli_t)); |
|
|
|
cli->timeout = timeout; |
cli->sock = socket(addr->sa_family, SOCK_STREAM, IPPROTO_TCP); |
cli->sock = socket(addr->sa_family, SOCK_STREAM, IPPROTO_TCP); |
if (cli->sock == -1) { |
if (cli->sock == -1) { |
LOGERR; |
LOGERR; |
Line 117 mqtt_cli_Close(mqtt_cli_t ** __restrict cli)
|
Line 119 mqtt_cli_Close(mqtt_cli_t ** __restrict cli)
|
|
|
free(*cli); |
free(*cli); |
*cli = NULL; |
*cli = NULL; |
|
return 0; |
|
} |
|
|
|
/* |
|
* mqtt_cli_Subscribe() - Subscribe to broker |
|
* |
|
* @cli = connected client |
|
* @Topics = Topics for subscribes |
|
* @msgID = Message ID |
|
* @Dup = Duplicated request |
|
* @QoS = Message QoS |
|
* return: NULL error or !=NULL allocated array with subscribed QoS responses, |
|
* must be free() result! |
|
*/ |
|
u_char * |
|
mqtt_cli_Subscribe(mqtt_cli_t * __restrict cli, mqtt_subscr_t * __restrict Topics, |
|
u_short msgID, u_char Dup, u_char QoS) |
|
{ |
|
int siz = 0; |
|
u_short mid = 0; |
|
u_char *qoses = NULL; |
|
|
|
if (!cli || !Topics) |
|
return NULL; |
|
|
|
/* send subscribe */ |
|
siz = mqtt_msgSUBSCRIBE(cli->buf, Topics, msgID, Dup, QoS); |
|
if (siz == -1) |
|
return NULL; |
|
siz = send(cli->sock, cli->buf->msg_base, siz, MSG_NOSIGNAL); |
|
if (siz == -1) { |
|
LOGERR; |
|
return NULL; |
|
} |
|
|
|
if ((siz = mqtt_wait4data(cli->sock, cli->timeout, POLLIN | POLLPRI)) == -1) { |
|
return NULL; |
|
} else if (siz && mqtt_KeepAlive(cli->sock, cli->timeout, 1)) |
|
return NULL; |
|
|
|
/* receive suback */ |
|
siz = recv(cli->sock, cli->buf->msg_base, cli->buf->msg_len, 0); |
|
if (siz == -1) { |
|
LOGERR; |
|
return NULL; |
|
} |
|
siz = mqtt_readSUBACK(cli->buf, &mid, &qoses); |
|
if (siz == -1) |
|
return NULL; |
|
if (msgID != mid) { |
|
free(qoses); |
|
mqtt_SetErr(EBADMSG, "Receive different message ID %hu != %hu", msgID, mid); |
|
return NULL; |
|
} |
|
|
|
return qoses; |
|
} |
|
|
|
/* |
|
* mqtt_cli_Unsubscribe() - Unsubscribe from broker |
|
* |
|
* @cli = connected client |
|
* @Topics = Topics for unsubscribes |
|
* @msgID = Message ID |
|
* @Dup = Duplicated request |
|
* @QoS = Message QoS |
|
* return: -1 error or 0 ok |
|
*/ |
|
int |
|
mqtt_cli_Unsubscribe(mqtt_cli_t * __restrict cli, mqtt_subscr_t * __restrict Topics, |
|
u_short msgID, u_char Dup, u_char QoS) |
|
{ |
|
int siz = 0; |
|
|
|
if (!cli || !Topics) |
|
return -1; |
|
|
|
/* send unsubscribe */ |
|
siz = mqtt_msgUNSUBSCRIBE(cli->buf, Topics, msgID, Dup, QoS); |
|
if (siz == -1) |
|
return -1; |
|
siz = send(cli->sock, cli->buf->msg_base, siz, MSG_NOSIGNAL); |
|
if (siz == -1) { |
|
LOGERR; |
|
return -1; |
|
} |
|
|
|
if ((siz = mqtt_wait4data(cli->sock, cli->timeout, POLLIN | POLLPRI)) == -1) { |
|
return -1; |
|
} else if (siz && mqtt_KeepAlive(cli->sock, cli->timeout, 1)) |
|
return -1; |
|
|
|
/* receive unsuback */ |
|
siz = recv(cli->sock, cli->buf->msg_base, cli->buf->msg_len, 0); |
|
if (siz == -1) { |
|
LOGERR; |
|
return -1; |
|
} |
|
siz = mqtt_readUNSUBACK(cli->buf); |
|
if (siz == -1) |
|
return -1; |
|
if (msgID != siz) { |
|
mqtt_SetErr(EBADMSG, "Receive different message ID %hu != %hu", msgID, siz); |
|
return -1; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* mqtt_cli_Publish() - Publish message to broker |
|
* |
|
* @cli = connected client |
|
* @msgID = Message ID |
|
* @Dup = Duplicated request |
|
* @QoS = Message QoS |
|
* @Retain = Retain message |
|
* @csTopic = Topic |
|
* @pData = Data |
|
* @datLen = Data length |
|
* return: -1 error or 0 ok |
|
*/ |
|
int |
|
mqtt_cli_Publish(mqtt_cli_t * __restrict cli, u_short msgID, u_char Dup, u_char QoS, u_char Retain, |
|
const char *csTopic, const void *pData, int datLen) |
|
{ |
|
int siz = 0; |
|
|
|
if (!cli || !csTopic) |
|
return -1; |
|
|
|
/* send publish */ |
|
siz = mqtt_msgPUBLISH(cli->buf, csTopic, msgID, Dup, QoS, Retain, pData, datLen); |
|
if (siz == -1) |
|
return -1; |
|
siz = send(cli->sock, cli->buf->msg_base, siz, MSG_NOSIGNAL); |
|
if (siz == -1) { |
|
LOGERR; |
|
return -1; |
|
} |
|
|
|
if (QoS == MQTT_QOS_ONCE) /* no reply */ |
|
goto end; |
|
|
|
if ((siz = mqtt_wait4data(cli->sock, cli->timeout, POLLIN | POLLPRI)) == -1) { |
|
return -1; |
|
} else if (siz && mqtt_KeepAlive(cli->sock, cli->timeout, 1)) |
|
return -1; |
|
|
|
/* receive PUBxxx */ |
|
siz = recv(cli->sock, cli->buf->msg_base, cli->buf->msg_len, 0); |
|
if (siz == -1) { |
|
LOGERR; |
|
return -1; |
|
} |
|
|
|
if (QoS == MQTT_QOS_ACK) { /* reply with PUBACK */ |
|
siz = mqtt_readPUBACK(cli->buf); |
|
if (siz == -1) |
|
return -1; |
|
if (msgID != siz) { |
|
mqtt_SetErr(EBADMSG, "Receive different message ID %hu != %hu", msgID, siz); |
|
return -1; |
|
} |
|
goto end; |
|
} else { /* reply with PUBREC */ |
|
siz = mqtt_readPUBREC(cli->buf); |
|
if (siz == -1) |
|
return -1; |
|
if (msgID != siz) { |
|
mqtt_SetErr(EBADMSG, "Receive different message ID %hu != %hu", msgID, siz); |
|
return -1; |
|
} |
|
} |
|
|
|
do { |
|
/* send publish release QoS == 2 */ |
|
siz = mqtt_msgPUBREL(cli->buf, msgID); |
|
if (siz == -1) |
|
return -1; |
|
siz = send(cli->sock, cli->buf->msg_base, siz, MSG_NOSIGNAL); |
|
if (siz == -1) { |
|
LOGERR; |
|
return -1; |
|
} |
|
|
|
if ((siz = mqtt_wait4data(cli->sock, cli->timeout, POLLIN | POLLPRI)) == -1) { |
|
return -1; |
|
} else if (siz && mqtt_KeepAlive(cli->sock, cli->timeout, 1)) { |
|
if (Dup++ > 1) |
|
return -1; |
|
else |
|
continue; |
|
} |
|
|
|
/* receive PUBCOMP */ |
|
siz = mqtt_readPUBCOMP(cli->buf); |
|
if (siz == -1) |
|
return -1; |
|
if (msgID != siz) { |
|
mqtt_SetErr(EBADMSG, "Receive different message ID %hu != %hu", msgID, siz); |
|
if (Dup++ > 1) |
|
return -1; |
|
else |
|
continue; |
|
} |
|
} while (0); |
|
|
|
end: |
return 0; |
return 0; |
} |
} |