TR-069 协议的开发(三)ACS呼叫AP

通信是可以了，但是现在是单向的呼叫，即AP呼叫ACS，那么ACS怎么呼叫AP呢？
  在TR-069协议3.2中规定了如何向AP发送连接请求，让AP创建连接。注意协议中规定是ACS向AP发送连接请求，AP鉴权通过后才会创建连接到ACS，所以ACS是不会连接到AP的，只是会发送连接请求，请求AP链接到ACS。
  下面是一种实现方式，使用了HTTPClient模拟发送GET请求到AP，其中AP的请求URL包含在Inform中了，也就是InternetGatewayDevice.ManagementServer.Connection
RequestURL对应的Value,用户名和密码就是上篇文章提到的 cwmp cep username XXX
password xxxx对应的value了。
具体不多说，先看协议再看代码了。

package com.seahigh;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.UsernamePasswordCredentials;
import org.apache.commons.httpclient.auth.AuthPolicy;
import org.apache.commons.httpclient.auth.AuthScope;p
import org.apache.commons.httpclient.methods.GetMethod;

/**
 * 
 * @author 汪心利
 * @Create Time 2009-1-6上午10:15:20
 * @CopyRight (C) seahigh 2009
 */
public class ConnectionRequest {
	public static void main(String[] arg) throws HttpException, IOException {
		callCPE("http://192.168.1.200:7547/cpe", "admin", "admin");

	}

	/**
	 * ACS CALL CPE
	 * 
	 * @param connectionRequestURL
	 *            访问CPE的URL 如:http://192.168.1.200:7547/cpe
	 * @param cepAccount
	 *            连接CPE用户名
	 * @param cpePWD
	 *            访问CPE的密码
	 */
	public static void callCPE(String connectionRequestURL, String cpeAccount,
			String cpePWD) {
		GetMethod get = new GetMethod(connectionRequestURL);
		int result = 0;
		try {
			HttpClient httpclient = new HttpClient();
			List authPrefs = new ArrayList(1);
			// Digest Auth
			authPrefs.add(AuthPolicy.DIGEST);
			httpclient.getParams().setParameter(
					AuthPolicy.AUTH_SCHEME_PRIORITY, authPrefs);
			// add CPE access param
			httpclient.getState().setCredentials(AuthScope.ANY,
					new UsernamePasswordCredentials(cpeAccount, cpePWD));
			result = httpclient.executeMethod(get);
		} catch (HttpException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			// relaseConnection
			get.releaseConnection();
		}
		System.out.println("Response status code: " + result);
		System.out.println("Response body: ");
	}
}

执行下程序，就可以看到AP向ACS发送Inform了，仔细查看inform的消息，就会发现
enent-code 6 Connection Request了，这就是说是ACS请求建立会话而创建的连接了.
结果如下：

<soap:Envelope xmlns:xsd="http://www.w3.org/2001/XMLSchema"                                    
               xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"                                      
	       xmlns:cwmp="urn:dslforum-org:cwmp-1-0"                                      
	       xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"                                      
	       xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/">        
	 <soap:Header>           
		<cwmp:ID soap:mustUnderstand="1">2</cwmp:ID>        
	 </soap:Header>        
	 <soap:Body>                 
		<cwmp:Inform>            
			<DeviceId>                
				<Manufacturer>H3C</Manufacturer>               
				<OUI>000FE2</OUI>                
				<ProductClass>Gateway</ProductClass>                
				<SerialNumber>210235A32MC085003208</SerialNumber>            
			</DeviceId>            
			<Event soapenc:arrayType="cwmp:EventStruct[1]">                
				<EventStruct>                  
					<EventCode>6 CONNECTION REQUEST</EventCode>                  
						<CommandKey></CommandKey>                
					</EventStruct>           
			</Event>            
			<MaxEnvelopes>1</MaxEnvelopes>            
			<CurrentTime>2000-04-28T06:11:26</CurrentTime>            
			<RetryCount>0</RetryCount>            
			<ParameterList soapenc:arrayType="cwmp:ParameterValueStruct[8]">                
				<ParameterValueStruct>                   
					<Name>InternetGatewayDevice.DeviceSummary</Name>                    
        <Value soap:type="soap:string">
        InternetGatewayDevice:1.0[](Baseline:1)
        </Value>               
				</ParameterValueStruct>                
				<ParameterValueStruct>                    
					<Name>InternetGatewayDevice.DeviceInfo.SpecVersion</Name>                    
	<Value soap:type="soap:string">1.0</Value>                
				</ParameterValueStruct>               
				<ParameterValueStruct>                    
					<Name>InternetGatewayDevice.DeviceInfo.HardwareVersion</Name>                    
          <Value soap:type="soap:string">Ver.A</Value>               
				</ParameterValueStruct>                
				<ParameterValueStruct>                    
					<Name>InternetGatewayDevice.DeviceInfo.SoftwareVersion</Name>                    
         <Value soap:type="soap:string">V100R001B47D011SP01</Value>
				</ParameterValueStruct>                
				<ParameterValueStruct>                    
					<Name>InternetGatewayDevice.DeviceInfo.ProvisioningCode</Name>                    
         <Value soap:type="soap:string">ProvisioningCode</Value>
				</ParameterValueStruct>               
				<ParameterValueStruct>                   
          <Name>
          InternetGatewayDevice.ManagementServer.ConnectionRequestURL
        </Name>                   
     <Value soap:type="soap:string"> 
      http://192.168.1.200:7547/cpe     
     </Value>               
				</ParameterValueStruct>                
				<ParameterValueStruct>                   
					<Name>InternetGatewayDevice.ManagementServer.ParameterKey</Name>                    
	<Value soap:type="soap:string"></Value>                
				</ParameterValueStruct>                
				<ParameterValueStruct>                   
          <Name>
InternetGatewayDevice.WANDevice.1.WANConnectionDevice.1.WANPPPConnection.1.ExternalIPAddress
       </Name>                   
<Value soap:type="soap:string">192.168.1.200</Value>                
				</ParameterValueStruct>            
			</ParameterList>          
		</cwmp:Inform>       
	</soap:Body>   
</soap:Envelope>

 

评论

1 楼 无双Rama 2012-03-23  

我用HttpClient实现，怎么让AP主动连ACS呢？