Openshift java.net.SocketException:权限被拒绝 [英] Openshift java.net.SocketException: Permission denied
问题描述
我正在使用Java8，并且具有一个聊天服务器，该服务器可以在 localhost 上完美运行，但是当我将其部署到OpenShift服务器时，出现以下错误:
I am using Java8 and have a Chat Server that works perfectly on my localhost, but when I deploy it to an OpenShift server, I get the following error:
java.net.SocketException:权限被拒绝
java.net.SocketException: Permission denied
2016-09-05 10:36:11,300 INFO [stdout] (Thread-125) Starting Chat server on localhost:8000 ...
2016-09-05 10:36:13,194 ERROR [stderr] (Thread-125) Exception in thread "Thread-125" java.net.SocketException: Permission denied
2016-09-05 10:36:13,194 ERROR [stderr] (Thread-125) at sun.nio.ch.Net.bind0(Native Method)
2016-09-05 10:36:13,195 ERROR [stderr] (Thread-125) at sun.nio.ch.Net.bind(Net.java:433)
2016-09-05 10:36:13,195 ERROR [stderr] (Thread-125) at sun.nio.ch.Net.bind(Net.java:425)
2016-09-05 10:36:13,195 ERROR [stderr] (Thread-125) at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
2016-09-05 10:36:13,195 ERROR [stderr] (Thread-125) at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
2016-09-05 10:36:13,196 ERROR [stderr] (Thread-125) at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:125)
2016-09-05 10:36:13,196 ERROR [stderr] (Thread-125) at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:476)
2016-09-05 10:36:13,196 ERROR [stderr] (Thread-125) at io.netty.channel.DefaultChannelPipeline$HeadHandler.bind(DefaultChannelPipeline.java:1000)
2016-09-05 10:36:13,196 ERROR [stderr] (Thread-125) at io.netty.channel.DefaultChannelHandlerContext.invokeBind(DefaultChannelHandlerContext.java:463)
2016-09-05 10:36:13,197 ERROR [stderr] (Thread-125) at io.netty.channel.DefaultChannelHandlerContext.bind(DefaultChannelHandlerContext.java:448)
2016-09-05 10:36:13,197 ERROR [stderr] (Thread-125) at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:842)
2016-09-05 10:36:13,197 ERROR [stderr] (Thread-125) at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:195)
2016-09-05 10:36:13,197 ERROR [stderr] (Thread-125) at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:338)
2016-09-05 10:36:13,198 ERROR [stderr] (Thread-125) at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:370)
2016-09-05 10:36:13,198 ERROR [stderr] (Thread-125) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:353)
2016-09-05 10:36:13,198 ERROR [stderr] (Thread-125) at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
2016-09-05 10:36:13,198 ERROR [stderr] (Thread-125) at java.lang.Thread.run(Thread.java:745)
我看过《 OpenShift Web套接字指南》 此处，其中指出端口8000应该是用过的.但是我仍然会收到错误消息.
I have looked at the OpenShift web sockets guide here, which says port 8000 should be used. But I still get the error.
在Openshift上，我在 WildFly Application Server 10 盒式磁带上运行聊天服务器.
On Openshift I am running my chat server on a WildFly Application Server 10 cartridge.
任何建议表示赞赏.
这是我的代码:
WebAppInitializer.java
try {
new Thread() {
public void run() {
com.jobs.spring.chat.Server chatServer = new com.jobs.spring.chat.Server();
chatServer.startServer();
}
}.start();
} catch (Exception e) {
e.printStackTrace();
}
Server.java
import java.net.Socket;
import com.corundumstudio.socketio.AckRequest;
import com.corundumstudio.socketio.Configuration;
import com.corundumstudio.socketio.SocketIOClient;
import com.corundumstudio.socketio.SocketIOServer;
import com.corundumstudio.socketio.listener.ConnectListener;
import com.corundumstudio.socketio.listener.DataListener;
import com.corundumstudio.socketio.listener.DisconnectListener;
import com.fasterxml.jackson.databind.ObjectMapper;
/**
* https://blog.openshift.com/paas-websockets/
* @author Richard
*
*/
public class Server {
//private static final String SERVER = "localhost";
private static final String SERVER = "jbosswildfly-easyjobs.rhcloud.com";
private static final Integer PORT = 8000;
public static void main(String[] args) {
startServer();
}
public static void startServer() {
Configuration config = new Configuration();
config.setHostname(SERVER);
config.setPort(PORT);
final SocketIOServer server = new SocketIOServer(config);
server.addConnectListener(new ConnectListener() {
@Override
public void onConnect(SocketIOClient client) {
System.out.println("onConnected");
client.sendEvent("chat_message:message", new Message("Welcome to the chat!"));
}
});
server.addDisconnectListener(new DisconnectListener() {
@Override
public void onDisconnect(SocketIOClient client) {
System.out.println("onDisconnected");
}
});
server.addEventListener("chat_message:send", String.class, new DataListener<String>() {
@Override
public void onData(SocketIOClient client, String data, AckRequest ackSender) throws Exception {
Message message = null;
try {
message = new ObjectMapper().readValue(data.toString(), Message.class);
} catch (Exception e) {
e.printStackTrace();
}
message.setDate(System.currentTimeMillis());
server.getBroadcastOperations().sendEvent("chat_message:message", message);
}
});
System.out.println("Starting Chat server on " + SERVER + ":" + PORT+" ...");
server.start();
System.out.println("Chat server started");
System.out.println("Chat server Environment Info: " + System.getenv());
try {
Socket socket = new Socket(SERVER, PORT);
printSocketInformation(socket);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Prints debug output (to stdout) for the given Java Socket.
*/
public static void printSocketInformation(Socket socket) {
try {
System.out.format("Port: %s\n", socket.getPort());
System.out.format("Canonical Host Name: %s\n", socket.getInetAddress().getCanonicalHostName());
System.out.format("Host Address: %s\n\n", socket.getInetAddress().getHostAddress());
System.out.format("Local Address: %s\n", socket.getLocalAddress());
System.out.format("Local Port: %s\n", socket.getLocalPort());
System.out.format("Local Socket Address: %s\n\n", socket.getLocalSocketAddress());
System.out.format("Receive Buffer Size: %s\n", socket.getReceiveBufferSize());
System.out.format("Send Buffer Size: %s\n\n", socket.getSendBufferSize());
System.out.format("Keep-Alive: %s\n", socket.getKeepAlive());
System.out.format("SO Timeout: %s\n", socket.getSoTimeout());
} catch (Exception e) {
e.printStackTrace();
}
}
}
在此链接 OpenShift中，有关端口绑定和代理.我不是很了解.看来我应该使用端口8000(是我)，但是我不清楚应该使用哪个主机名.我正在使用我的应用程序URL名称(jbosswildfly-easyjobs.rhcloud.com).正确吗?
In this link OpenShift talk about port binding and proxies. I don't really understand all of it. It looks like I should use port 8000 (which I am), but I am not clear what hostname I should use. I am using my application url name (jbosswildfly-easyjobs.rhcloud.com). Is that correct?
如果我将地址更改为http://jbosswildfly-easyjobs.rhcloud.com(即前缀http://)，则会出现以下错误:
If I change the address to, http://jbosswildfly-easyjobs.rhcloud.com (i.e. prefix http://) I get the following error:
java.net.SocketException:无法解析的地址
java.net.SocketException: Unresolved address
推荐答案
链接的博客文章说，您可以使用端口8000和8443连接到OpenShift上的websocket.但是，服务器本身只需绑定到端口 8080 ，然后您可以从外部连接到上面的ws端口.您已经找到的此图解释了配置.
The linked blog post says that you can connect to websockets on OpenShift using ports 8000 and 8443. However, the server itself needs to be bound only to port 8080 and then you can connect externally to the ws ports above. This diagram that you have already found explains the configuration.
WildFly已经在使用8080，因此您可能要使用 DIY墨盒部署您的应用程序(不要忘记在8080上运行的启动操作挂钩中禁用默认的ruby服务器)或受到启发
WildFly is using 8080 already, so you may want to use the DIY cartridge to deploy your app (don't forget to disable the default ruby server in the start action hook that is running on 8080) or be inspired here.
这篇关于Openshift java.net.SocketException:权限被拒绝的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
