Soenneker.Communication.Sms.Client 4.0.1738

Soenneker.Communication.Sms.Client

Provides a lazily created, reusable Azure Communication Services SmsClient through dependency injection.

Installation

dotnet add package Soenneker.Communication.Sms.Client

Configuration

{
  "Azure": {
    "CommunicationServices": {
      "ConnectionString": "<Azure Communication Services connection string>"
    }
  }
}

Store the connection string in a secret provider rather than source control or a checked-in settings file.

Registration

using Microsoft.Extensions.DependencyInjection;
using Soenneker.Communication.Sms.Client.Registrars;

services.AddSmsClientUtilAsSingleton();

AddSmsClientUtilAsScoped() creates one utility and Azure client per dependency-injection scope.

Usage

using Azure;
using Azure.Communication.Sms;
using Soenneker.Communication.Sms.Client.Abstract;

public sealed class SmsSender
{
    private readonly ISmsClientUtil _smsClients;

    public SmsSender(ISmsClientUtil smsClients)
    {
        _smsClients = smsClients;
    }

    public async ValueTask<SmsSendResult> Send(
        string from,
        string to,
        string message,
        CancellationToken cancellationToken)
    {
        SmsClient client = await _smsClients.Get(cancellationToken);

        Response<SmsSendResult> response = await client.SendAsync(
            from,
            to,
            message,
            cancellationToken: cancellationToken);

        return response.Value;
    }
}

The from number must belong to the authenticated Azure Communication Services resource. Use E.164 phone-number formatting where required by Azure and the destination country.

Inspect SmsSendResult.Successful, ErrorMessage, and related result fields; an accepted HTTP request does not make downstream carrier delivery instantaneous or guaranteed.

Lifecycle and behavior

• The first Get creates the Azure client from Azure:CommunicationServices:ConnectionString; later calls return the same client.
• The token passed to Get applies to lazy initialization. Pass a token to every SmsClient operation as well.
• Azure SDK clients are designed for reuse. Let dependency injection dispose ISmsClientUtil; do not construct a new client per message.
• Azure service failures are thrown as RequestFailedException.
• This package exposes the Azure SDK client directly. Use Soenneker.Communication.Sms.Util for the repository's higher-level SMS sending abstraction.
• Avoid logging message bodies, recipient numbers, connection strings, or other communication data unless the application has an explicit redaction and retention policy.