Twilio Studio短信发送乱序，求实现送达确认后再发下一条的方案

现成的状态查询子流JSON #

这个子流会自动查询上一条发送短信的状态，直到状态变为delivered后，才会触发后续流程。你可以直接导入到Twilio Studio中：

{
  "description": "Wait for SMS to be delivered before proceeding",
  "states": [
    {
      "name": "Check_SMS_Status",
      "type": "run-function",
      "parameters": {
        "function": "your-function-sid-here",
        "parameters": {
          "sms_sid": "{{widgets.Send_Message.sid}}"
        }
      },
      "transitions": [
        {
          "event": "success",
          "next": "Check_Status_Condition",
          "metadata": {
            "offset": {
              "x": 200,
              "y": 0
            }
          }
        },
        {
          "event": "fail",
          "next": "Wait_Before_Retry",
          "metadata": {
            "offset": {
              "x": 0,
              "y": 200
            }
          }
        }
      ],
      "metadata": {
        "offset": {
          "x": 0,
          "y": 0
        }
      }
    },
    {
      "name": "Check_Status_Condition",
      "type": "split-based-on",
      "parameters": {
        "input": "{{widgets.Check_SMS_Status.parsed.status}}"
      },
      "transitions": [
        {
          "next": "Proceed_to_Next_Step",
          "condition": "{{#equals input 'delivered'}}"
        },
        {
          "next": "Wait_Before_Retry",
          "condition": "{{#not (equals input 'delivered')}}"
        }
      ],
      "metadata": {
        "offset": {
          "x": 400,
          "y": 0
        }
      }
    },
    {
      "name": "Wait_Before_Retry",
      "type": "wait",
      "parameters": {
        "wait_for": "3",
        "wait_unit": "seconds"
      },
      "transitions": [
        {
          "event": "timeout",
          "next": "Check_SMS_Status",
          "metadata": {
            "offset": {
              "x": 0,
              "y": 400
            }
          }
        }
      ],
      "metadata": {
        "offset": {
          "x": 200,
          "y": 200
        }
      }
    },
    {
      "name": "Proceed_to_Next_Step",
      "type": "send-to-flow",
      "parameters": {
        "flow_sid": "{{flow.sid}}",
        "transition": "next_clue"
      },
      "transitions": [],
      "metadata": {
        "offset": {
          "x": 600,
          "y": 0
        }
      }
    }
  ],
  "initial_state": "Check_SMS_Status",
  "flags": {
    "allow_concurrent_calls": true
  }
}

注意：你需要先在Twilio Functions中创建一个简单的函数来查询SMS状态，函数代码如下：

exports.handler = async function(context, event, callback) {
  const client = context.getTwilioClient();
  try {
    const message = await client.messages(event.sms_sid).fetch();
    callback(null, { status: message.status });
  } catch (error) {
    callback(error);
  }
};

创建好函数后，把函数的SID替换到子流JSON中的your-function-sid-here位置。

子流插入指导 #

• 打开你的Twilio Studio主流程，找到发送线索的Send Message组件
• 点击该组件的输出连线，选择Add a new Widget，然后选择Redirect to Flow
• 在弹出的配置窗口中，点击Create new Flow，选择Import from JSON，粘贴上面的子流JSON并保存
• 回到主流程，将Send Message组件的Success事件连线到这个新创建的子流
• 在子流的Proceed_to_Next_Step组件中，配置transition为你主流程中下一个线索发送步骤的入口（比如给下一个Send Message组件设置名为next_clue的过渡）

付费编程帮助 #

如果你不会创建Twilio Function、配置子流过渡，或者需要针对你的寻宝游戏流程做定制调试，可以联系我提供一对一的付费支持，帮你快速解决短信乱序问题。

内容的提问来源于stack exchange，提问作者mckinney3