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TcpServerExample.java
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TcpServerExample.java
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package datastream;
import io.activej.csp.ChannelConsumer;
import io.activej.csp.ChannelSupplier;
import io.activej.datastream.csp.ChannelDeserializer;
import io.activej.datastream.csp.ChannelSerializer;
import io.activej.datastream.processor.StreamFilter;
import io.activej.eventloop.Eventloop;
import io.activej.eventloop.net.ServerSocketSettings;
import io.activej.net.socket.tcp.AsyncTcpSocket;
import io.activej.net.socket.tcp.AsyncTcpSocketNio;
import java.io.IOException;
import java.net.InetSocketAddress;
import static io.activej.serializer.BinarySerializers.INT_SERIALIZER;
import static io.activej.serializer.BinarySerializers.UTF8_SERIALIZER;
/**
* Demonstrates server ("Server #2" from the picture) which receives some data from clients,
* computes it in a certain way and sends back the result.
*/
//[START EXAMPLE]
public final class TcpServerExample {
public static void main(String[] args) throws IOException {
Eventloop eventloop = Eventloop.create();
eventloop.listen(new InetSocketAddress("localhost", TcpClientExample.PORT), ServerSocketSettings.create(100), channel -> {
AsyncTcpSocket socket;
try {
socket = AsyncTcpSocketNio.wrapChannel(eventloop, channel, null);
System.out.println("Client connected: " + channel.getRemoteAddress());
} catch (IOException e) {
throw new RuntimeException(e);
}
ChannelSupplier.ofSocket(socket)
.transformWith(ChannelDeserializer.create(INT_SERIALIZER))
.transformWith(StreamFilter.mapper(x -> x + " times 10 = " + x * 10))
.transformWith(ChannelSerializer.create(UTF8_SERIALIZER))
.streamTo(ChannelConsumer.ofSocket(socket));
});
System.out.println("Connect to the server by running datastream.TcpClientExample");
eventloop.run();
}
}
//[END EXAMPLE]