Client Socket Accepted Data is Different From Server Socket

Question

I'm trying to simulate server - client socket connection at Java. I have that code:

private static Socket clientSocket;
private static PrintWriter pw;
private static Socket serverSocket;
private static final int PORT_NUMBER = 1146;

public static void init() throws IOException {
    ServerSocket sSocket = new ServerSocket(PORT_NUMBER);
    clientSocket = new Socket("localhost", PORT_NUMBER);

    serverSocket = sSocket.accept();
    OutputStream os = serverSocket.getOutputStream();
    pw = new PrintWriter(os, true);
}

private void writePackage(int[] dataPackage) {
    for (int packageByte : dataPackage) {
        pw.write(packageByte);
    }
    pw.flush();

    try {
        InputStream is = clientSocket.getInputStream();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

My data package has hexadecimal values. It is a 127 length array. When I check client input stream I see that only the first 26 elements are the ones that I wrote the output stream of the server. Others are different. ie 26th element is 0xC1 which is 193 in decimal but client input stream accepts is 196 in decimal.

What I miss?

Answer 1

您应该使用OutputStream而不是PrintWriter来写入二进制数据。