Android HTTP 获取响应

Question

我用套接字发送了一条 GET 消息。但不幸的是，GET 响应不是200 OK 的状态。回复是400 Bad request 或302 Found 等。我该如何解决这个问题？你能帮助我吗 ？

    String requestmsg = "GET / HTTP/1.1\r\n";
    requestmsg += "User-Agent: MYCUSTOMAGENT\r\n";
    requestmsg += "Accept-Language: en-us\r\n";
    requestmsg += "Accept-Encoding: gzip, deflate\r\n";
    requestmsg += "Connection: Keep-Alive\r\n";
    requestmsg += "Connection: close\r\n";
    requestmsg += "\r\n";

    DataOutputStream dos = null;
    BufferedReader dis = null;

    try {
        Log.d("ClientActivity", "Connecting...");
        String addr = InetAddress.getByName("www.facebook.com").getHostAddress().toString();
        Socket socket = new Socket(addr, 80);
        String data = "";

        try {
            Log.d("ClientActivity", "C: Sending command.");
            dos = new DataOutputStream(socket.getOutputStream());
            dis = new BufferedReader(new InputStreamReader(socket.getInputStream()));

            dos.write(requestmsg.getBytes());
            Log.i("ClientActivity", "RequestMsg Sent");
            StringBuilder sb = new StringBuilder();

            while ((data = dis.readLine()) != null) {
                sb.append(data);
            }

            Log.i("ClientActivity", "C: Received " + sb.toString());
        } catch (Exception e) {
            Log.e("ClientActivity", "S: Error", e);

        }
        socket.close();
        Log.d("ClientActivity", "C: Closed.");
    } catch (Exception e) {
        Log.e("ClientActivity", "C: Error", e);
    }

Answer 1

您似乎缺少Host: 标头，这是HTTP/1.1 请求所必需的。