将域分配给IP地址

Question

我该如何使我的Java应用程序在某个套接字（例如172.16.1.10:8080）上运行HTTP服务器并进行设置，以便当网络上的另一台计算机连接到域（例如http://myjavadomain.com ）时被重定向到套接字？

Answer 1

If you are using Apache Tomcat then the below configuration will helpful to you.

Fot Apache Tomcat you have to make on Host entry in the configuration location of the TOMCAT_HOME location.

Follow below steps that will be helpful to you

1) Find the server.xml file in the conf location of TOMCAT_HOME 2) in the server.xml file make the below host entry

<Host name="www.xyz.com" debug="0" appBase="webapps/mynewhost" unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false">
    <Logger className="org.apache.catalina.logger.FileLogger" directory="logs"  prefix="mynewhost_log." suffix=".txt" timestamp="true"/>
</Host>


In appBase property place the location of your web app 

3) Now in browser open the above url.

Answer 2

If you want to run a fully fledged HTTP server then you will probably want to use some external library. For instance, Tomcat is written in Java, but there is also SUN's httpserver package . If it's just a simple socket server you're after, you can use the built-in classes from the java.net package:

ServerSocket server = new ServerSocket(8080);

while (running) {
    Socket socket = server.accept();
    handleConnection(socket);
}

This will listen for incoming socket connections on port 8080 and create a new Socket whenever a client connects. You can then communicate with the client through the Socket 's InputStream and OuputStream , which you would probably do in a separate Thread, so that your ServerSocket can continue listening for incoming connections from other clients.

As for the second part of your question: by default, a web browser will connect to port 80, and there are several ways you could do port forwarding. One possible solution using iptables is given on this website :

iptables -t nat -I PREROUTING --src 0/0 --dst 172.16.1.10 -p tcp --dport 80 -j REDIRECT --to-ports 8080

But the easiest solution would be to just specify the port number directly when connecting to your machine, eg

http://myjavadomain.com:8080

This is assuming that your DNS is configured so that it resolves myjavadomain.com to 172.16.1.10 already.