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- // Copyright 2021-2022 EMQ Technologies Co., Ltd.
- //
- // Licensed under the Apache License, Version 2.0 (the "License");
- // you may not use this file except in compliance with the License.
- // You may obtain a copy of the License at
- //
- // http://www.apache.org/licenses/LICENSE-2.0
- //
- // Unless required by applicable law or agreed to in writing, software
- // distributed under the License is distributed on an "AS IS" BASIS,
- // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- // See the License for the specific language governing permissions and
- // limitations under the License.
- package main
- import (
- "fmt"
- "time"
- mqtt "github.com/eclipse/paho.mqtt.golang"
- )
- const (
- tps = 500
- )
- func pub() {
- opts := mqtt.NewClientOptions().AddBroker(mqttUrl)
- client := mqtt.NewClient(opts)
- defer client.Disconnect(0)
- if token := client.Connect(); token.Wait() && token.Error() != nil {
- panic(token.Error())
- }
- for i := 0; ; i++ {
- payload := []byte(fmt.Sprintf(`{"temperature":%d,"humidity":90}`, 12+i%10))
- if token := client.Publish("rawdata", 0, false, payload); token.Wait() && token.Error() != nil {
- fmt.Println(token.Error())
- }
- time.Sleep(1000 / tps * time.Millisecond)
- }
- }
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