问题
When my app receives a Twilio SMS message, how long does Twilio wait for a response from my app? What happens if that time has been exceeded (ie. does Twilio send back an error code, log an error in your Twilio account, etc)?
回答1:
An 11200 error is an indicator of a connection failure between Twilio and your service. When Twilio requests a page from your server, we wait a maximum of 15 seconds for a response. A connection failure will occur if no response is returned in that time.
来源：https://stackoverflow.com/questions/36927144/wait-time-for-response-when-receiving-twilio-sms-messages