怎么了？服务器响应消息的不同结果

Question

我想知道，代码中有什么错误。

我想得到正确的结果。

但是现在，在服务器端发送奇怪的结果。

下面的link是参考。

https:// firebase.google.com/docs/cloud-messaging/server#choose

结果如下。

connect ready
host: fcm-xmpp.googleapis.com, and port: 5236
connect ok
connect!
msg: <stream:stream
to="gcm.googleapis.com"version="1.0"xmlns="jabber:
   client"xmlns:stream="http://eth    erx.jabber.org/streams">
channelConnected
e.getMessage(): BigEndianHeapChannelBuffer(ridx=0, widx=7, cap=7)
MessageDumpByte> - length:<7>

[0000] 15 03 01 00  02 02 46                                 ......F
messageReceived:

补充一下，贴出了我做的简单代码

public class client2
{
final String host = "fcm-xmpp.googleapis.com";
// final String host = "127.0.0.1";
final int port = 5236;
Channel channel = null;

public static void main(String[] args) throws Exception
{
    client2 client = new client2();
    client.init();
}

public void init()
{
    ClientBootstrap bootstrap = new ClientBootstrap(
            new NioClientSocketChannelFactory(
                    Executors.newCachedThreadPool(),
                    Executors.newCachedThreadPool()));

    bootstrap.setPipelineFactory(new ChannelPipelineFactory()
    {
        public ChannelPipeline getPipeline() throws Exception
        {
            return Channels.pipeline(new ClientHandler());
        }
    });

    System.out.println("connect ready");
    System.out.println("host: " + host + ", and port: " + port);

    ChannelFuture future = bootstrap.connect(new InetSocketAddress(host,
            port));
    channel = future.getChannel();

    System.out.println("connect ok");
}
}

class ClientHandler extends SimpleChannelUpstreamHandler
{

private ChannelBuffer firstMessage;
private final AtomicLong transferredBytes = new AtomicLong();

public ClientHandler()
{
}

public long getTransferredBytes()
{
    return transferredBytes.get();
}

@Override
public void channelConnected(ChannelHandlerContext ctx, ChannelStateEvent e)
{

    System.out.println("connect!");

    StringBuilder msg = new StringBuilder();

    msg.append("<stream:stream to=").append("\"")
            .append("gcm.googleapis.com").append("\"").append("version=")
            .append("\"").append("1.0").append("\"").append("xmlns=")
            .append("\"").append("jabber:client").append("\"")
            .append("xmlns:stream=").append("\"")
            .append("http://etherx.jabber.org/streams").append("\"")
            .append(">");

    System.out.println("msg: " + msg.toString());

    firstMessage = ChannelBuffers.copiedBuffer(msg.toString(),
            CharsetUtil.UTF_8);
    e.getChannel().write(firstMessage);

}

@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e)
{
    System.out.println("e.getMessage(): " + e.getMessage());
    transferredBytes.addAndGet(((ChannelBuffer) e.getMessage())
            .readableBytes());

    ChannelBuffer cb = (ChannelBuffer) e.getMessage();
    byte[] message = cb.array();

    try
    {
        String dump = Utility.MessageDumpByte(message);
        System.out.println(dump);
        System.out.println("messageReceived: "
                + new String(message, "UTF-8"));
    }
    catch (Exception e1)
    {
        e1.printStackTrace();
    }

}
}

我用的是jdk1.7，Netty版本3.X

并且参考了这篇文档制作的

Answer 1

你缺少的是你必须首先建立一个 TLS 连接（这在文档中解释得很清楚）。

您得到的回复是：

0x15       Alert
0x03 0x01  TLS version 1.0
0x00 0x02  Message Length
0x02       Fatal
0x46       Certificate unknown

所以，去研究如何使用netty的SSL处理程序吧。

怎么了？服务器响应消息的不同结果

What is the wrong? Different results of the server response message

java

xmpp

netty

firebase

firebase-cloud-messaging