Netty-Chat | Chat | Websocket library
kandi X-RAY | Netty-Chat Summary
kandi X-RAY | Netty-Chat Summary
Chat server using netty
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QUESTION
**chatclient.java**
package com.examplechat;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.Channel;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.sctp.nio.NioSctpChannel;
public class ChatClient {
public static void main(String[] args) throws InterruptedException, IOException {
new ChatClient("localhost", 8000).run();
}
private final String host;
private final int port;
public ChatClient(String host, int port) {
super();
this.host = host;
this.port = port;
}
public void run() throws InterruptedException, IOException {
EventLoopGroup group = new NioEventLoopGroup();
try {
Bootstrap bootstrap = new Bootstrap()
.group(group)
.channel(NioSctpChannel.class)
.handler(new ChatClientInitilizer());
Channel channel = bootstrap.connect(host, port).sync().channel();
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
while(true) {
channel.write(in.readLine()+ "\r\n");
}
}
finally {
group.shutdownGracefully(); }
}
}
**ChatServer.java**
package com.examplechat;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
public class ChatServer {
public static void main(String[] args) throws InterruptedException {
new ChatServer(8000).run();
}
private final int port;
public ChatServer(int port) {
super();
this.port = port;
}
public void run() throws InterruptedException {
EventLoopGroup bossGroup = new NioEventLoopGroup();
EventLoopGroup workerGroup = new NioEventLoopGroup();
try {
ServerBootstrap bootstrap = new ServerBootstrap()
.group(bossGroup, workerGroup)
.channel(NioServerSocketChannel.class)
.childHandler(new ChatServerInitializer());
bootstrap.bind(port).sync().channel().closeFuture().sync();
}
finally {
bossGroup.shutdownGracefully();
workerGroup.shutdownGracefully();
}
}}
...ANSWER
Answered 2018-Mar-08 at 09:52I was getting error as
Unable to create Channel from class class io.netty.channel
which is Caused by: java.lang.UnsupportedOperationException: ibsctp.so.1: cannot open shared object file: No such file or directory`
This error was cleared once I install lksctp-tools by:
sudo apt-get install lksctp-tools
Now channel has been registered. But I'm getting a new error that WARNING:
Failed to initialize a channel. Closing: [id: 0x9e4e05e0] java.lang.ClassCastException: io.netty.channel.sctp.nio.NioSctpChannel cannot be cast to io.netty.channel.socket.SocketChannel
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