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CMakeLists.txt
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README.md

Basic Video Chat With Server

The Basic Video Chat application shows how to connect to an OpenTok session, publish a stream, and subscribe to a stream using the OpenTok Linux SDK.

Upon building and running this sample application, you should be able to have two way audio and video communication using OpenTok.

This application leverages a server to create sessions, generate tokens for those sessions, archive (or record) sessions, and download those archives.

Setting up the test web service

The Learning OpenTok PHP repo includes code for setting up a web service.

  1. Clone or download the repo and run its code on a PHP-enabled web server. If you do not have a PHP server set up, you can use Heroku to run a remote test server -- see Automatic deployment to Heroku.

  2. After getting this web service running, edit the main.cpp file and set the value for SERVER_URL to the URL for the web service:

    • If you deployed a the test web service to a local PHP server, set this to the following:
#define SERVER_URL "http://localhost:8080"
  • If you deployed this to Heroku, set this to the following:
#define SERVER_URL "YOUR-HEROKU-APP-URL"

Do not add the trailing slash of the URL.

The sample will load the OpenTok session ID, token, and API key from the web service. Also, the archiving sample will use the web service to start, stop, and view archives.

Building and running the sample app

Before building the sample application you have to uncompress the OpenTok Linux SDK package in the assets folder.

Uncompress the one for the target host you are building the sample application for. We would uncompress assets/opentok-ot-libotkit-ubuntu_x86_64-2.17.0-preview.0.tgz] for Ubuntu x86_84.

$ cd assets; unp opentok-ot-libotkit-ubuntu_x86_64-2.17.0-preview.0.tgz

This will create a package folder at assets/package. The sample application build bits will try find the OpenTok Linux SDK header files and library under the package folder.

We use CMake in this sample application so you have to install it before trying to build the sample application. There are other dependencies you have to install too. These are:

  • build-essential
  • cmake
  • clang
  • libc++-dev
  • libc++abi-dev
  • pkg-config
  • libuv1-dev
  • libunwind-dev
  • libcurl4-openssl-dev
  • libjansson-dev
  • libasound2
  • libpulse-dev
  • libsdl2-dev

Let's build the sample application. Since it's good practice to create a build folder, let's go ahead and create it in the project directory.

$ mkdir Basic-Video-Chat-With-Server/build

Next step is to create the building bits using cmake.

$ cd Basic-Video-Chat-With-Server/build
$ CC=clang CXX=clang++ cmake ..

Note we are using clang/clang++ compilers here.

We will use make to build the code.

$ make

Run the basic_video_chat_with_server binary once it's built.

$ ./basic_video_chat_with_server --room linuxsdk

You can end the sample application by using the Control + C combination in the console.