android - 使用 LocalServerSocket 时出现 "IOException: Try again"

Question

是否有人对异常“再试一次”有更多有用的信息？

我正在使用 LocalServerSocket 和 LocalSocket 在应用之间发送位图:

输出:

socket = new LocalSocket();
socket.connect(new LocalSocketAddress(SOCKET_NAME));
fos = new DataOutputStream(socket.getOutputStream());
...

public void onEvent() {
    fos.writeInt(width);
    fos.writeInt(height);
    fos.writeInt(newBuffer.length);
    fos.write(newBuffer);
}

输入:

server = new LocalServerSocket(SOCKET_NAME);
socket = server.accept(); 
socket.setSoTimeout(60);

while(true) {

    int width = fis.readInt(); // IO Exception being thrown here
    int height = fis.readInt(); 
    int length = fis.readInt();
    byte[] bytes = new byte[length];
    fis.read(bytes);
}

[为清楚起见删除了 try/catch 等]

04-18 09:19:11.664: W/System.err(1268): java.io.IOException: Try again
04-18 09:19:11.664: W/System.err(1268):     at android.net.LocalSocketImpl.readba_native(Native Method)
04-18 09:19:11.664: W/System.err(1268):     at android.net.LocalSocketImpl.access$400(LocalSocketImpl.java:29)
04-18 09:19:11.664: W/System.err(1268):     at android.net.LocalSocketImpl$SocketInputStream.read(LocalSocketImpl.java:92)
04-18 09:19:11.664: W/System.err(1268):     at libcore.io.Streams.readFully(Streams.java:81)
04-18 09:19:11.664: W/System.err(1268):     at java.io.DataInputStream.readInt(DataInputStream.java:124)
04-18 09:19:11.664: W/System.err(1268):     at com.test.util.BitmapSendingUtils$BitmapReceiver$1.run(BitmapSendingUtils.java:105)

Answer 1

您看到的异常可能是 java 等价于 EAGAIN 错误。参见示例 this answer .

您应该处理异常并再次尝试失败的 IO 操作。