使用Java实现XMPP中的基本连接
我试图理解基本的xmpp客户机-服务器通信。我已经安装了ejabberd服务器并用jitsi进行了测试。现在,我可以从Java发送第一个流xml并从服务器获得响应使用Java实现XMPP中的基本连接,java,sockets,xmpp,Java,Sockets,Xmpp,我试图理解基本的xmpp客户机-服务器通信。我已经安装了ejabberd服务器并用jitsi进行了测试。现在,我可以从Java发送第一个流xml并从服务器获得响应 <?xml version='1.0'?> <stream:stream to='192.168.1.18' version='1.0' xmlns='jabber:server' xmlns:stream='http://etherx.jabber.org/streams'>
<?xml version='1.0'?>
<stream:stream to='192.168.1.18'
version='1.0' xmlns='jabber:server'
xmlns:stream='http://etherx.jabber.org/streams'>
服务器用
<?xml version='1.0'?><stream:stream xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' id='13712777409692765897' from='192.168.1.18' version='1.0' xml:lang='en'><stream:features><c xmlns='http://jabber.org/protocol/caps' hash='sha-1' node='http://www.process-one.net/en/ejabberd/' ver='GtsjYPujnBb89z2vC8P/arjzmdE='/><register xmlns='http://jabber.org/features/iq-register'/><starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/><compression xmlns='http://jabber.org/features/compress'><method>zlib</method></compression><mechanisms xmlns='urn:ietf:params:xml:ns:xmpp-sasl'><mechanism>SCRAM-SHA-1</mechanism><mechanism>PLAIN</mechanism><mechanism>X-OAUTH2</mechanism></mechanisms></stream:features>
zlibSCRAM-SHA-1PLAINX-OAUTH2
根据XMPP编程客户机指南,在服务器响应后,客户机必须发送iq进行注册,即
<iq type='get' to='shakespeare.lit' id='auth1'>
<query xmlns='jabber:iq:auth'>
<username>bill</username>
</query>
</iq>
账单
服务器将以
<iq type='result' id='auth1'>
<query xmlns='jabber:iq:auth'>
<username/>
<password/>
<digest/>
<resource/>
</query>
</iq>
之后,客户端将再次发送带有用户名和密码的iq。
现在我正在尝试做同样的事情,但是在第一次响应之后,进一步的服务器响应是空的。我的代码如下
public static void Sock() throws IOException, InterruptedException{
String connect="<?xml version='1.0'?> "
+ "<stream:stream "
+ "to='192.168.1.18' version='1.0' "
+ "xmlns='jabber:server' "
+ "xmlns:stream='http://etherx.jabber.org/streams'> ";
String msg="<iq type='get' to='192.168.1.18' id='auth1'> "
+ "<query xmlns='jabber:iq:auth'> "
+ "<username>junaid</username> "
+ "</query> "
+ "</iq>";
Socket socket = null;
try
{
String host = "192.168.1.18";
int port = 5222;
InetAddress address = InetAddress.getByName(host);
socket = new Socket(address, port);
socket.setKeepAlive(true);
//Send the message to the server
OutputStream os = socket.getOutputStream();
OutputStreamWriter osw = new OutputStreamWriter(os);
BufferedWriter bw = new BufferedWriter(osw);
bw.write(connect);
bw.flush();
System.out.println("Message sent to the server : "+connect);
//Get the return message from the server
InputStream is = socket.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String message = br.readLine();
System.out.println("Message received from the server : " +message);
System.out.println(socket.isConnected());
///////Message
bw.write(msg);
bw.flush();
System.out.println("Message sent to the server : "+msg);
System.out.println(socket.isConnected());
//Get the return message from the server
is = socket.getInputStream();
isr = new InputStreamReader(is);
br = new BufferedReader(isr);
message = br.readLine();
System.out.println("Message received from the server : " +message);
}
catch (Exception exception)
{
exception.printStackTrace();
}
finally
{
//Closing the socket
try
{
socket.close();
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
publicstaticvoidsock()抛出IOException、InterruptedException{
String connect=“”
+ " ";
字符串msg=“”
+ " "
+“朱奈德”
+ " "
+ "";
套接字=空;
尝试
{
字符串host=“192.168.1.18”;
int端口=5222;
InetAddress=InetAddress.getByName(主机);
套接字=新套接字(地址、端口);
socket.setKeepAlive(true);
//将消息发送到服务器
OutputStream os=socket.getOutputStream();
OutputStreamWriter osw=新的OutputStreamWriter(os);
BufferedWriter bw=新的BufferedWriter(osw);
写入(连接);
bw.flush();
System.out.println(“发送到服务器的消息:“+connect”);
//从服务器获取返回消息
InputStream=socket.getInputStream();
InputStreamReader isr=新的InputStreamReader(is);
BufferedReader br=新的BufferedReader(isr);
字符串消息=br.readLine();
System.out.println(“从服务器收到的消息:“+消息”);
System.out.println(socket.isConnected());
///////信息
bw.write(msg);
bw.flush();
System.out.println(“发送到服务器的消息:“+msg”);
System.out.println(socket.isConnected());
//从服务器获取返回消息
is=socket.getInputStream();
isr=新的InputStreamReader(is);
br=新的缓冲读取器(isr);
message=br.readLine();
System.out.println(“从服务器收到的消息:“+消息”);
}
捕获(异常)
{
异常。printStackTrace();
}
最后
{
//合上插座
尝试
{
socket.close();
}
捕获(例外e)
{
e、 printStackTrace();
}
}
}
我是套接字编程新手,所以如果有人能告诉我我做错了什么,我将非常感激。
上述函数的输出为
Message sent to the server : <?xml version='1.0'?>
<stream:stream to='192.168.1.18'
version='1.0' xmlns='jabber:server'
xmlns:stream='http://etherx.jabber.org/streams'>
Message received from the server : <?xml version='1.0'?><stream:stream xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' id='13712777409692765897' from='192.168.1.18' version='1.0' xml:lang='en'><stream:features><c xmlns='http://jabber.org/protocol/caps' hash='sha-1' node='http://www.process-one.net/en/ejabberd/' ver='GtsjYPujnBb89z2vC8P/arjzmdE='/><register xmlns='http://jabber.org/features/iq-register'/><starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/><compression xmlns='http://jabber.org/features/compress'><method>zlib</method></compression><mechanisms xmlns='urn:ietf:params:xml:ns:xmpp-sasl'><mechanism>SCRAM-SHA-1</mechanism><mechanism>PLAIN</mechanism><mechanism>X-OAUTH2</mechanism></mechanisms></stream:features>
true
Message sent to the server : <iq type='get' to='192.168.1.18' id='auth1'>
<query xmlns='jabber:iq:auth'>
<username>junaid</username>
</query>
</iq>
true
Message received from the server : null
发送到服务器的消息:
从服务器收到的消息:zlibSCRAM-SHA-1PLAINX-OAUTH2
真的
发送到服务器的消息:
朱奈德
真的
从服务器收到的消息:null
请不要重新发明轮子——只要使用已经编写良好的XMPP框架即可。我可以推荐library—它将为您提供漂亮干净的API,您无需手动构造或解析XML我不是,我只是想了解通信过程