Sylk Mobile

Sylk Mobile is part of Sylk Suite, a set of real-time communications applications using IETF SIP protocol and WebRTC specifications.

Sylk Suite consists of:

SIP/WebRTC application server
Mobile push notifications server
Desktop clients for Windows, Linux and MacOS
Mobile clients for Apple iOS and Google Android
Web page for WebRTC enabled browsers
Mobile client development SDK
Desktop client development SDK

Home page

License

Sylk mobile licensed under GNU General Public License version 3. A copy of the license is available at http://www.fsf.org/licensing/licenses/gpl-3.0.html

Availability

Google Play
Apple Store
Source code

Features

1-to-1 audio and video calls
Encrypted end-to-end messaging
Synchronization of multiple devices
Multiparty conferencing
Call history entries management
Native address book lookup
Native OS telephony integration
Support for multiple devices in parallel
Support for multiple cameras
Support for landscape and portrait modes
Support for tablets and phones
Interoperable with SIP clients
Receive calls from the web

Messages are encrypted end-to-end using OpenPGP.

Credits

Financial support

NGI0 PET Fund, a fund established by NLnet with financial support from the European Commission's Next Generation Internet programme, under the aegis of DG Communications Networks, Content and Technology under grant agreement No 825310
Project description

People

Saúl Ibarra Corretgé - Inception architect / original idea
Tijmen de Mes - API, Conference and desktop
Dan Jenkins - WebRTC and React Native mechanic
Adrian Georgescu - Janitor
Bibiana Rivadeneira - Push notifications
Michiel Leenaars - Strategic guidance

Running dependencies

Sylk Server
Sylk Pushserver
SIP infra with push notifications support

Demo client

OpenSIPS server software
SIP2SIP public infrastructure
Janus Gateway

Getting Started

Building dependencies

Java from http://java.com
NVM from https://heynode.com/tutorial/install-nodejs-locally-nvm/
Using nvm install Node.js version 12
Yarn (for package management) curl -o- -L https://yarnpkg.com/install.sh | bash
XCode
Android Studio (Or at least the Android SDK)
Gem (for installing gem files)
Fastlane (for deploying to testflight/google play store)
Cocoapods (for handling iOS Pods)
- Install RVM: curl -L https://get.rvm.io | bash -s stable
- Update ruby: rvm install rvm install ruby
- Add to .bash_profile export LANG=en_US.UTF-8 export LANGUAGE=en_US.UTF-8 export LC_ALL=en_US.UTF-8
- sudo gem install cocoapods
watchman (for helping watch files during development) brew install watchman or port install watchman

Install

Follow the Getting Started guide as much as you can but not everything will be explained. No install docs will be listed here for each tool as they'll change, go and check them out yourself.

Updating the app

Yarn can be a bit of a pain, especially when a git dependency changes.

To be sure you're running the lastest code run:

rm -rf node_modules
rm -rf ios/Pods
yarn cache clean
yarn
cd ios; pod install; cd ..

XCODE 12.5 fixes

npm rebuild node-sass

facebook/create-react-app#4540

brew install watchman or port install watchman

Decrypting the git repo

Run git-crypt unlock to check that you can decrypt the files in the repo. If you can't you'll need to generate a GPG key and pass it to someone with access to the repo. A good guide is located at https://medium.com/@sumitkum/securing-your-secret-keys-with-git-crypt-b2fa6ffed1a6

Running the app

Use react-native run-ios --help and react-native run-android --help to give you all you need to know. You shouldn't ever have to build from Xcode or Android Studio.

Running on the iOS Simulator

Currently we have issues running a build of ios from the cli using yarn react-native run-ios so instead, open up xcode and run it there

open ios/sylk.xcworkspace/

Running on the Android Simulator or device

If you don't have any simulators running, and don't have an android device plugged in (or available to adb) React Native will start up a simulator for you. If you have a device available (doesn't matter if its real or a simulator) this command will output to the device.

yarn react-native run-android

Debugging

Install https://reactnative.dev/docs/debugging#react-developer-tools

Shake the device and touch Debug.

Running on the iOS Device

Currently we have issues running a build of ios from the cli using yarn react-native run-ios --device so instead, open up xcode and run it there

Running on a specific Android Device

yarn react-native run-android --deviceId "DeviceId"

--deviceId [string] builds your app and starts it on a specific device/simulator with the given device id (listed by running "adb devices" on the command line).

Running without debugging

To run the app on your device without tethering it to USB:

On Android:

yarn react-native run-android --variant=release

On iOS:

Select menu Product -> Scheme -> Edit scheme andselect for Run Build Configuration = Release

Beware that iOS push tokens are still meant for sandbox unless the app is released through Apple Store.

Clean the project

You might want to bring the project back to a clean repo if you're hitting any issues.

Try it as a dry-run first

git clean -d -x --dry-run

git clean -d -x -f

Building the app for deployment

We use fastlane for building production versions of the app.

Fastlane can handle all the metadata around your entry into the relevant App Stores and much much more too.

Currently we have two commands - you will need to open Xcode and allow it to sync the deployment key as we allow Xcode to control that rather than do it ourselves. We could add it directly into the project with git-crypt and tell fastlane to use it to make this easier.

fastlane ios beta

fastlane android beta

Patches

We utilise the patch-package module in order to patch the react-native-callkeep module instead of maintaining a complete fork. See their README on how to make changes to the patch and how those patches get installed automatically within this project on install of npm modules.

Update sylkrts.js

yarn add -D AGProjects/sylkrtc.js

Firebase notifications reference

https://firebase.google.com/docs/reference/fcm/rest/v1/projects.messages#AndroidNotification

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