I have a strange problem that I can't seem to solve. At an impasse and I could really use your help. Here are the key characteristics of the problem.

1. I CAN send an SMS via Twilio using curl (see below) at the command line and I CAN successfully receive it via T-mobile or Google Voice. Twilio delivery status is 'delivered', as expected.

2. If I send the SMS using any of the npm packages (listed below) via a Cloud Run express API that I wrote, then:

a. I CAN successfully send the message, and the Twilio delivery status reads: 'delivered'.

b. I CAN successfully receive the message at a Google Voice number.

c. I CANNOT successfully receive the message on a device where T-mobile is the carrier. (Or any other carrier for that matter.) Yet, the Twilio delivery status still reads 'delivered' in this case.

Is there an IP whitelist I should be using at the Twilio console, maybe? Perhaps there's some other configuration I should be making at the console? Sure seems strange that Google Voice receives messages from a Google cloud service, but that the carriers do not. Any help, advice, or insight would be greatly appreciated. Thanks so much in advance.

curl -X POST -d "Body=Hi, this is the message" -d "From= 14155551212" -d "To= 19251012002" "https://api.twilio.com/2010-04-01/Accounts/<SID>/Messages" -u "SID:AUTH_TOKEN"

npm packages tried:

    "axios": "^0.27.2",
    "request": "^2.88.2",
    "twilio": "^3.80.0"

CodePudding user response：

Try this:

fetch('https://api.twilio.com/2010-04-01/Accounts/<SID>/Messages', {
    method: 'POST',
    headers: {
        'Content-Type': 'application/x-www-form-urlencoded',
        'Authorization': 'Basic '   btoa('SID:AUTH_TOKEN')
    },
    body: 'Body=Hi, this is the message&From= 14155551212&To= 19251012002'
});

CodePudding user response：

Thanks for your help, all. Solved the problem. A proper facepalm. I had a short url in the message body which was preventing delivery.