我的电脑上有一个简单的服务器,我的 htc 上有一个简单的客户端,希望运行 android 2.2。
服务器和客户端都使用相同的端口。我将服务器 ip 硬编码到客户端代码中。当我尝试通过 android 上的客户端连接到正在运行的服务器时,客户端会抛出此异常:
IOException ...: java.net.SocketException: The operation timed out.
以下是部分客户端和服务器代码:
客户代码
InetAddress addr;
Socket socket = null;
byte [] ipAddress = new byte[] {(byte)82,(byte)168,(byte)175,(byte)141};
try{
addr = InetAddress.getByAddress(ipAddress);
socket = new Socket(addr, 1234);
System.out.println("socket = "+socket);
BufferedReader in = new BufferedReader(
new InputStreamReader(
socket.getInputStream()));
PrintWriter out = new PrintWriter(
new BufferedWriter(
new OutputStreamWriter(socket.getOutputStream())),true);
out.println("hello");
socket.close();
} catch (UnknownHostException e) {
System.out.println("UnknownHostException ...: "+e);
} catch (IOException e) {
System.out.println("IOException ...: "+e);
}
,
服务器代码
ServerSocket ss = new ServerSocket(PORT);
System.out.println("Started:"+ss);
try{
//block until a connection occures
Socket socket = ss.accept();
try{
System.out.println("Conncetion accepted:"+socket);
InputStream IS = socket.getInputStream();
InputStreamReader ISR = new InputStreamReader(IS);
BufferedReader in = new BufferedReader(ISR);
OutputStream OS = socket.getOutputStream();
OutputStreamWriter OSR= new OutputStreamWriter(OS);
BufferedWriter BW = new BufferedWriter(OSR);
//output automatically flushed by PrintWriter
PrintWriter out = new PrintWriter(BW,true);
while(true){
String str = in.readLine();
System.out.println("Client: "+str);
out.println("hi");
}
}finally{
System.out.println("Closing...");
socket.close();
}
}finally{
ss.close();
}
此代码使用 wifi 但不能通过 3g 工作。
欢迎任何帮助......并提前感谢您。