jain-sip v1.2学习笔记

刚刚sip，第一次使用jain-sip包来做开发时遇到了一些问题。我写出来，方便自己回顾同时也给后来者提供借鉴。

我在https://jain-sip.dev.java.net/上面下在JainSipApi1.2.jar(sip的接口)和JainSipRi1.2.jar(NIST对sip的参考实现) 然后建立了一个java工程(我是用eclipse)。然后把这两个包导入，写了一个很简单的代码；如下:

package com.wwm.uas;

import java.util.Properties;

import javax.sip.PeerUnavailableException;
import javax.sip.SipFactory;
import javax.sip.SipStack;

public class SimpleUAS {
 public SimpleUAS(){
  //Configuration s;
  SipStack sipStack = null;
  SipFactory sipFactory = SipFactory.getInstance();
  sipFactory.setPathName("gov.nist");
  Properties properties = new Properties();
  // If you want to try TCP transport change the following to
  String transport = "udp";
  String peerHostPort = "127.0.0.1:5060";
  properties.setProperty("javax.sip.OUTBOUND_PROXY", peerHostPort + "/"
    + transport);
  // If you want to use UDP then uncomment this.
  properties.setProperty("javax.sip.STACK_NAME", "shootist");

  // The following properties are specific to nist-sip
  // and are not necessarily part of any other jain-sip
  // implementation.
  // You can set a max message size for tcp transport to
  // guard against denial of service attack.
  properties.setProperty("gov.nist.javax.sip.DEBUG_LOG",
    "shootistdebug.txt");
  properties.setProperty("gov.nist.javax.sip.SERVER_LOG",
    "shootistlog.txt");

  // Drop the client connection after we are done with the transaction.
  properties.setProperty("gov.nist.javax.sip.CACHE_CLIENT_CONNECTIONS",
    "false");
  // Set to 0 (or NONE) in your production code for max speed.
  // You need 16 (or TRACE) for logging traces. 32 (or DEBUG) for debug + traces.
  // Your code will limp at 32 but it is best for debugging.
  properties.setProperty("gov.nist.javax.sip.TRACE_LEVEL", "TRACE");
  try {
   sipStack = sipFactory.createSipStack(properties);
   
  } catch (PeerUnavailableException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
   System.exit(-1);
  }
 }
 /**
  * @param args
  */
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  SimpleUAS test= new SimpleUAS();
 }

}

然后运行问题就出来了:

报如下错误:

javax.sip.PeerUnavailableException: The Peer SIP Stack: gov.nist.javax.sip.SipStackImpl could not be instantiated. Ensure the Path Name has been set.
 at javax.sip.SipFactory.createStack(SipFactory.java:324)
 at javax.sip.SipFactory.createSipStack(SipFactory.java:152)
 at com.wwm.uas.SimpleUAS.<init>(SimpleUAS.java:42)
 at com.wwm.uas.SimpleUAS.main(SimpleUAS.java:55)
Caused by: java.lang.reflect.InvocationTargetException
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
 at java.lang.reflect.Constructor.newInstance(Unknown Source)
 at javax.sip.SipFactory.createStack(SipFactory.java:314)
 ... 3 more
Caused by: java.lang.NoClassDefFoundError: EDU/oswego/cs/dl/util/concurrent/ConcurrentHashMap
 at gov.nist.javax.sip.stack.SIPTransactionStack.<init>(SIPTransactionStack.java:360)
 at gov.nist.javax.sip.SipStackImpl.<init>(SipStackImpl.java:252)
 at gov.nist.javax.sip.SipStackImpl.<init>(SipStackImpl.java:293)
 ... 8 more

后来折腾了很久才发现没有concurrent.jar的包.我在http://gee.cs.oswego.edu/dl/classes/EDU/oswego/cs/dl/util/concurrent/intro.html 这个包大致作用是线程同步操作，数据通道。我没有仔细研究过。

下载后的文件时需要编译的。注意参看上面链接中的内容。当然如果你有jboss4的话，下面直接就有concurrent.jar($jboss_home/lib/)

引入该包后运行程序，出现以下问题:

javax.sip.PeerUnavailableException: The Peer SIP Stack: gov.nist.javax.sip.SipStackImpl could not be instantiated. Ensure the Path Name has been set.
 at javax.sip.SipFactory.createStack(SipFactory.java:324)
 at javax.sip.SipFactory.createSipStack(SipFactory.java:152)
 at com.wwm.uas.SimpleUAS.<init>(SimpleUAS.java:43)
 at com.wwm.uas.SimpleUAS.main(SimpleUAS.java:56)
Caused by: java.lang.reflect.InvocationTargetException
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
 at java.lang.reflect.Constructor.newInstance(Unknown Source)
 at javax.sip.SipFactory.createStack(SipFactory.java:314)
 ... 3 more
Caused by: java.lang.NoClassDefFoundError: org/apache/log4j/Layout
 at gov.nist.javax.sip.SipStackImpl.<init>(SipStackImpl.java:316)
 ... 8 more

有了上面的经验，立刻就知道什么原因了。确log4j的包。不用多说，到apache网站上下载吧.

引入log4j运行成功了；）