Network Transport Extension

Network Transport Extension

Extension Description

Implementations for remote communication servers and client transports.

Extension Interfaces

  • org.apache.dubbo.remoting.Transporter
  • org.apache.dubbo.remoting.Server
  • org.apache.dubbo.remoting.Client

Extension Configuration

  1. <!-- Server and client use the same transport implementation -->
  2. <dubbo:protocol transporter="xxx" /> 
  3. <!-- Server and client use different transport implementations -->
  4. <dubbo:protocol server="xxx" client="xxx" /> 
  5. <!-- Default settings, used when <dubbo:protocol> does not configure transporter/server/client attributes -->
  6. <dubbo:provider transporter="xxx" server="xxx" client="xxx" />

Known Extensions

  • org.apache.dubbo.remoting.transport.transporter.netty.NettyTransporter
  • org.apache.dubbo.remoting.transport.transporter.mina.MinaTransporter
  • org.apache.dubbo.remoting.transport.transporter.grizzly.GrizzlyTransporter

Extension Example

Maven project structure:

  1. src
  2.  |-main
  3.     |-java
  4.         |-com
  5.             |-xxx
  6.                 |-XxxTransporter.java (implements Transporter interface)
  7.                 |-XxxServer.java (implements Server interface)
  8.                 |-XxxClient.java (implements Client interface)
  9.     |-resources
  10.         |-META-INF
  11.             |-dubbo
  12.                 |-org.apache.dubbo.remoting.Transporter (plain text file, contents: xxx=com.xxx.XxxTransporter)

XxxTransporter.java：

  1. package com.xxx;
  3. import org.apache.dubbo.remoting.Transporter;
  5. public class XxxTransporter implements Transporter {
  6.     public Server bind(URL url, ChannelHandler handler) throws RemotingException {
  7.         return new XxxServer(url, handler);
  8.     }
  9.     public Client connect(URL url, ChannelHandler handler) throws RemotingException {
  10.         return new XxxClient(url, handler);
  11.     }
  12. }

XxxServer.java：

  1. package com.xxx;
  3. import org.apache.dubbo.remoting.transport.transporter.AbstractServer;
  5. public class XxxServer extends AbstractServer {
  6.     public XxxServer(URL url, ChannelHandler handler) throws RemotingException{
  7.         super(url, handler);
  8.     }
  9.     protected void doOpen() throws Throwable {
  10.         // ...
  11.     }
  12.     protected void doClose() throws Throwable {
  13.         // ...
  14.     }
  15.     public Collection<Channel> getChannels() {
  16.         // ...
  17.     }
  18.     public Channel getChannel(InetSocketAddress remoteAddress) {
  19.         // ...
  20.     }
  21. }

XxxClient.java：

  1. package com.xxx;
  3. import org.apache.dubbo.remoting.transport.transporter.AbstractClient;
  5. public class XxxClient extends AbstractClient {
  6.     public XxxServer(URL url, ChannelHandler handler) throws RemotingException{
  7.         super(url, handler);
  8.     }
  9.     protected void doOpen() throws Throwable {
  10.         // ...
  11.     }
  12.     protected void doClose() throws Throwable {
  13.         // ...
  14.     }
  15.     protected void doConnect() throws Throwable {
  16.         // ...
  17.     }
  18.     public Channel getChannel() {
  19.         // ...
  20.     }
  21. }

META-INF/dubbo/org.apache.dubbo.remoting.Transporter：

  1. xxx=com.xxx.XxxTransporter

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Last modified September 30, 2024: Update & Translate Overview Docs (#3040) (d37ebceaea7)