Azure Communication SMS client library for JavaScript - version 1.1.0

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Azure Communication SMS services gives developers the ability to send SMS messages from a phone number that can be purchased through Communication Services.

Getting started

Prerequisites

Installing

npm install @azure/communication-sms

How to acquire a phone number

Phone numbers can be acquired and assigned to a Communication Services resource from the Azure Portal. Instructions on how to get a phone number using the Azure Portal can be found here.

You may also get a phone number by using the @azure/communication-phone-numbers package. Instructions on how to use the package can be found in the package's README.

Browser support

JavaScript Bundle

To use this client library in the browser, first you need to use a bundler. For details on how to do this, please refer to our bundling documentation.

Key concepts

SmsClient

SmsClient is the primary interface for developers using this client library. It provides an asynchronous method to send SMS messages.

Examples

Authentication

You can get a key and/or connection string from your Communication Services resource in Azure Portal. Once you have a key, you may authenticate with any of the following methods:

Using a connection string

import { SmsClient } from "@azure/communication-sms";

const connectionString = `endpoint=https://<resource-name>.communication.azure.com/;accessKey=<Base64-Encoded-Key>`;
const client = new SmsClient(connectionString);

Create a credential with AzureKeyCredential

import { AzureKeyCredential } from "@azure/core-auth";
import { SmsClient } from "@azure/communication-sms";

const endpoint = "https://<resource-name>.communication.azure.com";
const credential = new AzureKeyCredential("<Base64-Encoded-Key>");
const client = new SmsClient(endpoint, credential);

Using Azure Active Directory managed identity

Client API key authentication is used in most of the examples, but you can also authenticate with Azure Active Directory using the Azure Identity library. To use the DefaultAzureCredential provider shown below, or other credential providers provided with the Azure SDK, please install the @azure/identity package:

npm install @azure/identity

The @azure/identity package provides a variety of credential types that your application can use to do this. The README for @azure/identity provides more details and samples to get you started. AZURE_CLIENT_SECRET, AZURE_CLIENT_ID and AZURE_TENANT_ID environment variables are needed to create a DefaultAzureCredential object.

import { DefaultAzureCredential } from "@azure/identity";
import { SmsClient } from "@azure/communication-sms";

const endpoint = "https://<resource-name>.communication.azure.com";
let credential = new DefaultAzureCredential();
const client = new SmsClient(endpoint, credential);

Send a 1:N SMS Message

To send an SMS message, call the send function from the SmsClient. You need to pass in a SmsSendRequest object. You may also add pass in an options object to specify whether the delivery report should be enabled and set custom tags for the report. An array of SmsSendResult is returned. A successful flag is used to validate if each individual message was sent successfully.

const sendResults = await client.send(
  {
    from: "<from-phone-number>", // Your E.164 formatted phone number used to send SMS
    to: ["<to-phone-number-1>", "<to-phone-number-2>"], // The list of E.164 formatted phone numbers to which message is being sent
    message: "Weekly Promotion!" // The message being sent
  },
  {
    enableDeliveryReport: true,
    tag: "marketing"
  }
);

for (const sendResult of sendResults) {
  if (sendResult.successful) {
    console.log("Success: ", sendResult);
  } else {
    console.error("Something went wrong when trying to send this message: ", sendResult);
  }
}

Troubleshooting

SMS operations will throw an exception if the request to the server fails. Exceptions will not be thrown if the error is caused by an individual message, only if something fails with the overall request. Please use the successful flag to validate each individual result to verify if the message was sent.

try {
  const sendResults = await client.send({
    from: "<from-phone-number>", // Your E.164 formatted phone number used to send SMS
    to: ["<to-phone-number-1>", "<to-phone-number-2>"], // The list of E.164 formatted phone numbers to which message is being sent
    message: "Hello World via SMS!" // The message being sent
  });
  for (const sendResult of sendResults) {
    if (sendResult.successful) {
      console.log("Success: ", sendResult);
    } else {
      console.error("Something went wrong when trying to send this message: ", sendResult);
    }
  }
} catch (e) {
  console.error(e.message);
}

Next steps

Contributing

If you'd like to contribute to this library, please read the contributing guide to learn more about how to build and test the code.

Impressions