int _mosquitto_packet_handle(struct mosquitto *mosq)
{
assert(mosq);
switch((mosq->in_packet.command)&0xF0){
case PINGREQ:
return _mosquitto_handle_pingreq(mosq);
case PINGRESP:
return _mosquitto_handle_pingresp(mosq);
case PUBACK:
return _mosquitto_handle_pubackcomp(mosq, "PUBACK");
case PUBCOMP:
return _mosquitto_handle_pubackcomp(mosq, "PUBCOMP");
case PUBLISH:
return _mosquitto_handle_publish(mosq);
case PUBREC:
return _mosquitto_handle_pubrec(mosq);
case PUBREL:
return _mosquitto_handle_pubrel(NULL, mosq);
case CONNACK:
return _mosquitto_handle_connack(mosq);
case SUBACK:
return _mosquitto_handle_suback(mosq);
case UNSUBACK:
return _mosquitto_handle_unsuback(mosq);
default:
/* If we don't recognise the command, return an error straight away. */
_mosquitto_log_printf(mosq, MOSQ_LOG_ERR, "Error: Unrecognised command %d\n", (mosq->in_packet.command)&0xF0);
return MOSQ_ERR_PROTOCOL;
}
}
int mqtt3_packet_handle(struct mosquitto_db *db, struct mosquitto *context)
{
if(!context) return MOSQ_ERR_INVAL;
switch((context->in_packet.command)&0xF0){//高4位为消息类型
case PINGREQ:
return _mosquitto_handle_pingreq(context);//简单给客户端发送PINGREQ包就行
case PINGRESP:
return _mosquitto_handle_pingresp(context);//不需要额外处理
case PUBACK:
return _mosquitto_handle_pubackcomp(context, "PUBACK");//我们给客户端发送一条PUBLISH消息，对方返回一条PUBACK表示收到了
case PUBCOMP:
return _mosquitto_handle_pubackcomp(context, "PUBCOMP");//对方给我们返回了一个PUBCOMP，也就是QOS2的第四个包，那我们就可以将这条消息直接给弄掉了
case PUBLISH:
return mqtt3_handle_publish(db, context);//处理订阅消息
case PUBREC:
return _mosquitto_handle_pubrec(context);//对方跟我说，他已经记录了刚才给他的QOS2消息。等待我发送PUBREL
case PUBREL:
return _mosquitto_handle_pubrel(db, context);//客户端发送PUBLIS,我们立即回复PUBREC,现在是该对方发送PUBREL的时候了，接到这个就可以真正发布了
case CONNECT:
return mqtt3_handle_connect(db, context);//带密码登陆/重登陆
case DISCONNECT:
return mqtt3_handle_disconnect(db, context);//客户端主动断开一个连接,这里只是关闭SOCKET，设置state，其他数据都没有动
case SUBSCRIBE:
return mqtt3_handle_subscribe(db, context);//订阅一个topic
case UNSUBSCRIBE:
return mqtt3_handle_unsubscribe(db, context);//退订一个topic
default:
/* If we don't recognise the command, return an error straight away. */
return MOSQ_ERR_PROTOCOL;
}
}
int mqtt3_packet_handle(struct mosquitto_db *db, struct mosquitto *context)
{
if(!context) return MOSQ_ERR_INVAL;
switch((context->in_packet.command)&0xF0){
case PINGREQ:
return _mosquitto_handle_pingreq(context);
case PINGRESP:
return _mosquitto_handle_pingresp(context);
case PUBACK:
return _mosquitto_handle_pubackcomp(context, "PUBACK");
case PUBCOMP:
return _mosquitto_handle_pubackcomp(context, "PUBCOMP");
case PUBLISH:
//
return mqtt3_handle_publish(db, context);
case PUBREC:
return _mosquitto_handle_pubrec(context);
case PUBREL:
return _mosquitto_handle_pubrel(db, context);
case CONNECT:
//
return mqtt3_handle_connect(db, context);
case DISCONNECT:
return mqtt3_handle_disconnect(db, context);
case SUBSCRIBE:
//
return mqtt3_handle_subscribe(db, context);
case UNSUBSCRIBE:
return mqtt3_handle_unsubscribe(db, context);
case CONNACK:
return mqtt3_handle_connack(db, context);
case SUBACK:
return _mosquitto_handle_suback(context);
case UNSUBACK:
return _mosquitto_handle_unsuback(context);
default:
/* If we don't recognise the command, return an error straight away. */
return MOSQ_ERR_PROTOCOL;
}
}
