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https://github.com/ndolestudio/httpsms

Send and receive SMS messages using your Android phone programmatically via a simple HTTP API
https://github.com/ndolestudio/httpsms

android-sms android-sms-sender httpsms sms sms-api sms-gateway sms-manager sms-manager-api

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Send and receive SMS messages using your Android phone programmatically via a simple HTTP API

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README 

        
# httpSMS



[![Build](https://github.com/NdoleStudio/httpsms/actions/workflows/ci.yml/badge.svg)](https://github.com/NdoleStudio/httpsms/actions/workflows/ci.yml)

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[![GitHub license](https://img.shields.io/github/license/NdoleStudio/httpsms?color=brightgreen)](https://github.com/NdoleStudio/httpsms/blob/master/LICENSE)

[![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-2.1-4baaaa.svg)](CODE_OF_CONDUCT.md)

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[![Discord](https://img.shields.io/discord/1095778291488653372?label=Discord)](https://discord.gg/kGk8HVqeEZ)



[httpSMS](https://httpsms.com) is a service that lets you use your Android phone as an SMS Gateway to send and receive SMS messages.

You make a request to a simple HTTP API and it triggers your Android phone to send an SMS. SMS messages received on your android phone can also be forwarded to your webhook endpoint.



Quick Start Guide 👉 [https://docs.httpsms.com](https://docs.httpsms.com)



header



## Table Of Contents



- [Why?](#why)

- [Web UI](#web-ui)

- [API](#api)

- [Android App](#android-app)

- [Chat/forum](#chatforum)

- [Features](#features)

  - [End-to-end Encryption](#end-to-end-encryption)

  - [Webhook](#webhook)

  - [Back Pressure](#back-pressure)

  - [Message Expiration](#message-expiration)

- [API Clients](#api-clients)

- [Flows](#flows)

  - [Sending an SMS Message](#sending-an-sms-message)

- [Self Host Setup - Docker](#self-host-setup---docker)

  - [1. Setup Firebase](#1-setup-firebase)

  - [2. Setup SMTP Email service](#2-setup-smtp-email-service)

  - [3. Download the code](#3-download-the-code)

  - [4. Setup the environment variables](#4-setup-the-environment-variables)

  - [5. Build and Run](#5-build-and-run)

  - [6. Create the System User](#6-create-the-system-user)

  - [7. Build the Android App.](#7-build-the-android-app)

- [License](#license)



## Why?



I'm originally from Cameroon and I wanted an automated way to send and receive SMS messages using an API.

Unfortunately many countries don't support the ability to buy virtual phone numbers, and I could not find a good ready-made

solution that could help me send/receive SMS messages using a mobile phone using an intuitive http API.



## Web UI



The web interface https://httpsms.com is built using [Nuxt](https://nuxtjs.org/) and [Vuetify](https://vuetifyjs.com/en/).

It is hosted as a single page application on firebase. The source code is in the [web](./web) directory



## API



The API https://api.httpsms.com is built using [Fiber](https://gofiber.io/), Go and [CockroachDB](https://www.cockroachlabs.com/) for the database.

It rus as a serverless application on Google Cloud Run. The API documentation can be found here https://api.httpsms.com/index.html



```go

// Sending an SMS Message using Go

client := htpsms.New(htpsms.WithAPIKey(/* API Key from https://httpsms.com/settings */))



client.Messages.Send(context.Background(), &httpsms.MessageSendParams{

    Content: "This is a sample text message",

    From:    "+18005550199",

    To:      "+18005550100",

})

```



## Android App



[The Android App](https://apk.httpsms.com/HttpSms.apk) is a native application built using Kotlin with material design principles.

This app must be installed on an Android phone before you can start sending and receiving SMS messages.



[Get it on GitHub](https://github.com/NdoleStudio/httpsms/releases/)



## Chat/forum



There are a few ways to get in touch with me and/or the rest of the community. Feel free to use any of these methods. Whatever

works best for you:



- [Discord server](https://discord.gg/kGk8HVqeEZ) - direct chat with the community

- [GitHub issues](https://github.com/NdoleStudio/httpsms/issues) - questions, features, bugs



## Features



### End-to-end Encryption



You can encrypt your messages end-to-end ysubg the military grade [AES-256 encryption](https://en.wikipedia.org/wiki/Advanced_Encryption_Standard)

algorithm. Your encryption key is stored only on our mobile phone so the even the server won't have any way to view the

content of your SMS messages which are sent and received on your Android phone.



### Webhook



If you want to build advanced integrations, we support webhooks. The httpSMS platform can forward SMS messages received

on the android phone to your server using a callback URL which you provide.



### Back Pressure



In-order not to abuse the SMS API on android, you can set a rate limit e.g 3 messages per minute. Such that even if you

call the API to send messages to 100 people, It will only send the messages at a rate of 3 messages per minute.



### Message Expiration



Sometimes it happens that the phone doesn't get the push notification in time and I can't send the SMS message. It is

possible to set a timeout for which a message is valid and if a message becomes expired after the timeout elapses, you

will be notified.



## API Clients



- [x] Go: https://github.com/NdoleStudio/httpsms-go

- [x] JavaScript/TypeScript: https://github.com/NdoleStudio/httpsms-node



## Flows



### Sending an SMS Message



```mermaid

sequenceDiagram

User->>+httpSMS API: Call /v1/messages/send API

httpSMS API-->>+Push Queue: Schedule notification about new message

httpSMS API-->>-User: Respond with 202 (Accepted)

Push Queue-->>+httpSMS API: [Async] Send notification request

httpSMS API-->>-Android App: Send push notification about new message

Android App-->>httpSMS API: [Async] Fetch message

Android App-->>Android App: Send Message using Android SMS API

Android App-->>httpSMS API: [Async] Send result of sending SMS

Android App-->>httpSMS API: [Async] Send Delivery Report

```



## Self Host Setup - Docker



### 1. Setup Firebase



- The httpSMS application uses [firebase cloud messaging](https://firebase.google.com/docs/cloud-messaging) for sending push notifications to your Android phone to trigger an SMS message to be sent out.

  Visit the [firebase console](https://console.firebase.google.com/) and create a new project and follow the [steps here](https://firebase.google.com/docs/web/setup#register-app) to get your firebase web SDK config credentials.

  For example, I created a firebase project called `httpsms-docker` and this is my web SDK configuration



```js

const firebaseConfig = {

  apiKey: "AIzaSyAKqPvj51igvvNNcRt_gL0A6cgx3ZB-kuQ",

  authDomain: "httpsms-docker.firebaseapp.com",

  projectId: "httpsms-docker",

  storageBucket: "httpsms-docker.appspot.com",

  messagingSenderId: "668063041624",

  appId: "1:668063041624:web:29b9e3b7027965ba08a22d",

  measurementId: "G-18VRYL22PZ",

};

```



- Enable `Email/Password` sign-in in the [Firebase console](https://console.firebase.google.com/u/0/), open the **Authentication** section. On the Sign in method tab, enable the `Email/password` sign-in method and click `Save`.

  - The firebase `email/password` sign-in method has [a bug](https://github.com/firebase/firebaseui-web/issues/1040) which prevents you from signing in. The work around right now is to [disable email enumeration protection](https://cloud.google.com/identity-platform/docs/admin/email-enumeration-protection#disable) on the firebase console.

- Generate your firebase service account credentials by following the [steps here](https://firebase.google.com/docs/admin/setup#initialize_the_sdk_in_non-google_environments) and save the credentials in a file called `firebase-credentials.json` we will use this file to authenticate with the firebase admin SDK.

- Generate your Android `google-services.json` file using [the instructions here](https://support.google.com/firebase/answer/7015592?hl=en#android&zippy=%2Cin-this-article) we will use it letter to configure the android app.



### 2. Setup SMTP Email service



The httpSMS application uses [SMTP](https://en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol) to send emails to users e.g. when your Android phone has been offline for a long period of time.

You can use a service like [mailtrap](https://mailtrap.io/) to create an SMTP server for development purposes.



### 3. Download the code



Clone the httpSMS GitHub repository



```bash

git clone https://github.com/NdoleStudio/httpsms.git

```



### 4. Setup the environment variables



- Copy the `.env.docker` file in the `web` directory into `.env`



```bash

cp web/.env.local.docker web/.env.local

```



- Update the environment variables in the `.env` file in the `web` directory with your firebase web SDK configuration in step 1 above



```dotenv

FIREBASE_API_KEY=

FIREBASE_AUTH_DOMAIN=

FIREBASE_PROJECT_ID=

FIREBASE_STORAGE_BUCKET=

FIREBASE_MESSAGING_SENDER_ID=

FIREBASE_APP_ID=

FIREBASE_MEASUREMENT_ID=

```



- Copy the `.env.docker` file in the `api` directory into `.env`



```bash

cp api/.env.local.docker api/.env.local

```



- Update the environment variables in the `.env` file in the `api` directory with your firebase service account credentials and SMTP server details.



```dotenv

# SMTP email server settings

SMTP_USERNAME=

SMTP_PASSWORD=

SMTP_HOST=

SMTP_PORT=



# Firebase service account credentials

FIREBASE_CREDENTIALS=



# This is the `projectId` from your firebase web config

GCP_PROJECT_ID=

```



- Don't bother about the `EVENTS_QUEUE_USER_API_KEY` and `EVENTS_QUEUE_USER_ID` settings. We will set that up later.



### 5. Build and Run



- Build and run the API, the web UI, database and cache using the `docker-compose.yml` file. It takes a while for build and download all the docker images.

  When it's finished, you'll be able to access the web UI at http://localhost:3000 and the API at http://localhost:8000



```bash

docker compose up --build

```



### 6. Create the System User



- The application uses the concept of a system user to process events async. You should manually create this user in `users` table in your database.

  Make sure you use the same `id` and `api_key` as the `EVENTS_QUEUE_USER_ID`, and `EVENTS_QUEUE_USER_API_KEY` in your `.env` file



### 7. Build the Android App.



- Before building the Android app in [Android Studio](https://developer.android.com/studio), you need to replace the `google-services.json` file in the `android/app` directory with the file which you got from step 1. You need to do this for the firebase FCM messages to work properly.



## License



This project is licensed under the GNU AFFERO GENERAL PUBLIC LICENSE Version 3 - see the [LICENSE](LICENSE) file for details