“IOException:无效的流标头:00010000";在 TCP 上从 C# 主机到 Java 客户端获取数据时 [英] "IOException:invalid stream header: 00010000" While getting data from C# Host to Java Client on TCP
问题描述
我是 Sockets 的新手,使用 C# 主机和 Java/Android 客户端处理项目.
I am new to Sockets, Working on a project with C# host and Java/Android Client.
我需要通过 TCP 套接字从主机到客户端连续获取数据.我在使用 DataInputStream 或 ObjectInputStream 获取数据时遇到了同样的问题无效的流标头".
I need to get data from host to client continuously via TCP socket. I am facing the same problem "invalid stream header" while fetching data with DataInputStream or ObjectInputStream.
using System;
using System.Collections.Generic;
using System.Text;
using System.Net.Sockets;
using System.Net;
using System.Runtime.Serialization.Formatters.Binary;
using PacketAndroid;
namespace SampleForAndroid
{
public class TCPListener
{
public Socket SocketForClient;
public void StartListening()
{
try
{
TcpListener Listener = new TcpListener(5155);
Listener.Start();
SocketForClient = Listener.AcceptSocket();
if (SocketForClient != null && SocketForClient.Connected)
{
int i = 1;
while (SocketForClient.Connected && i<2)
{
NetworkStream NS = new NetworkStream(SocketForClient);
BinaryFormatter BF = new BinaryFormatter();
TCPPayLoad PayLoad = new TCPPayLoad();
Console.WriteLine(PayLoad.ToString());
NS.Flush();
BF.Serialize(NS, PayLoad);
i = 2;
}
}
}
catch (SocketException EX)
{
}
}
static void Main(string[] args)
{
TCPListener List = new TCPListener();
System.Threading.Thread TcpThread=new System.Threading.Thread(new System.Threading.ThreadStart(List.StartListening));
TcpThread.Start();
Console.ReadLine();
}
}
}
和java客户端:
import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
public class ObjectReceiver {
public static void main(String argv[]) {
fun_0();
}
@SuppressWarnings("unused")
private static void fun_0() {
ObjectInputStream ois = null;
Socket socket = null;
try {
// open a socket connection
socket = new Socket("127.0.0.1", 5155);
System.out.println("Connecting...");
ObjectInputStream din = new ObjectInputStream(socket.getInputStream());
int size = din.readInt();
System.out.println(din.read());
byte[] bytes = new byte[size];
int readBytes = din.read(bytes);
System.out.println(readBytes);
Object object = din.readObject();
TcpPayload payload = (TcpPayload) object;
System.out.println(payload.toString());
} catch (IOException e) {
System.out.println("IOException:" + e.getMessage());
} catch (Exception e) {
System.out.println("Exception:" + e.getMessage());
}
}
}
对象TcpPayload 是一个只有抢占数据类型和字符串的类的实例.java和C#都是同一个对象,实现了序列化.
The object TcpPayload is an instance of a class which has only preemptive data types and a string. Both java and C# has the same object with the implementation of serialization.
请告诉我解决方案,我只有通过客户端调整代码的选择.主机已经可以正常使用 iOS 客户端了.
Please tell me about the solution, I have the only option to tune the code over client side. The host is already working fine with iOS client.
提前致谢:)
推荐答案
不幸的是,二进制序列化在 C# (.NET) 和 Java 之间不兼容.我实际上记得前一段时间和你一样尝试过,但失败了.
Unfortunately binary serialization is not compatible between C# (.NET) and Java. I actually remember trying the same thing as you a while back and failing.
恐怕您需要找到替代编码方法,例如自定义 XML 或 JSON 序列化(这实际上使 Web 服务能够跨平台工作).
I'm afraid you will need to find an alternative encoding method, such as perhaps a custom XML or JSON serialization (which in fact enables web services to work across platforms).
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