Since the communication is bi-directional, you can obtain two different streams from the socket: val inputStream = socket.getInputStream() The returned Socket object represents the communication channel between the server and the connected client. This call will block until the next client connects, so don’t call this method on UI thread: val socket = serverSocket.accept() To make ServerSocket accept connection requests from clients, call its accept() method.
Since ports are involved, you can already guess that this server will become an endpoint on a TCP/IP network. To instantiate ServerSocket, you’ll need to specify a specific port that the server will be listening on: val serverSocket = ServerSocket(50000)
This class basically realizes server’s functionality and abstracts out most of the underlying complexity from you. Let’s review the main building blocks of an embedded web server in Android.įirst, you’ll need to use ServerSocket class.
#ANDROID WEB SERVER APP ANDROID#
In this post I’ll explain the basics of web servers in Android applications and provide a reference implementation that you can use to bootstrap your own efforts. Embedding web servers in Android apps is a niche use case, but, after seeing three different clients using this approach, I’m pretty sure it’s not exceptionally rare either. This will allow your application to accept network connections from external (or internal) clients and establish a bi-directional communication with them. It might sound odd, but you can turn your Android application into a full-blown web server.
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