Android的产生java.net.SocketException：套接字失败：EACCES（权限被拒绝） [英] Android java.net.SocketException: socket failed: EACCES (Permission denied)
问题描述
我试图建立与运行嵌入式Linux的设备的TCP / IP连接，我在Android USB绑定有Android设备和嵌入式Linux设备之间的以太网连接使用，我修改了嵌入式Linux设备支持RNDIS设备驱动程序。
I'm trying to create a TCP/IP connection with a device that is running embedded linux, I'm using from android the USB tethering to have a ethernet connection between the Android device and the Embedded Linux device, I modified the embedded linux device to support RNDIS device driver.
而Android和嵌入式Linux设备工作正常，一个以太网连接如建立成功地，我可以从嵌入式linux到Android设备，反之亦然ping通。
The Android and the embedded linux device are working correctly, a ethernet conection was established succesfully, I can ping from embedded linux to android device and viceversa.
在我的Android应用程序，我创建了一个简单的服务，建立与嵌入式Linux设备的TCP / IP连接，在问题发生时，我尝试连接我得到了以下错误：
On my android application I created a simple service to establish a TCP/IP connection with the embedded linux device, the problem happens when I try to connect i got the following error:
02-17 13:53:13.300: E/TCP Client(2576): C: Connecting...
02-17 13:53:13.310: E/TCP Client(2576): C: Error
02-17 13:53:13.310: E/TCP Client(2576): java.net.SocketException: socket failed: EACCES (Permission denied)
02-17 13:53:13.310: E/TCP Client(2576): at libcore.io.IoBridge.socket(IoBridge.java:583)
02-17 13:53:13.310: E/TCP Client(2576): at java.net.PlainSocketImpl.create(PlainSocketImpl.java:201)
02-17 13:53:13.310: E/TCP Client(2576): at java.net.Socket.startupSocket(Socket.java:559)
02-17 13:53:13.310: E/TCP Client(2576): at java.net.Socket.<init>(Socket.java:225)
02-17 13:53:13.310: E/TCP Client(2576): at com.example.service.TCPClientThread.run(TCPClientThread.java:75)
02-17 13:53:13.310: E/TCP Client(2576): Caused by: libcore.io.ErrnoException: socket failed: EACCES (Permission denied)
02-17 13:53:13.310: E/TCP Client(2576): at libcore.io.Posix.socket(Native Method)
02-17 13:53:13.310: E/TCP Client(2576): at libcore.io.BlockGuardOs.socket(BlockGuardOs.java:181)
02-17 13:53:13.310: E/TCP Client(2576): at libcore.io.IoBridge.socket(IoBridge.java:568)
02-17 13:53:13.310: E/TCP Client(2576): ... 4 more
我已经配置我的清单如下：
I have configured my manifest as follows:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.dea600"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="18" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<application
android:allowBackup="true"
android:icon="@drawable/example"
android:label="@string/appName" >
<activity
android:name="com.example.gui.mainActivity"
android:configChanges="orientation|screenSize"
android:screenOrientation="landscape"
android:theme="@android:style/Theme.Holo.Light.DarkActionBar" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="android.intent.category.HOME" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<service
android:name="com.example.service.TCPClientService"
android:isolatedProcess="true"
android:label="TCP Client Service"
android:process=":TCPClientService" >
</service>
<receiver
android:name="com.example.service.TCPStartClientService"
android:enabled="true"
android:exported="true"
android:process=":StartTCPService">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
</application>
</manifest>
最交流中心的事情是，如果我使用的是Android虚拟机（Genymotion）我是能够连接和everithing工作正常，但是当我尝试使用它在真实设备上我得到的错误。
The most extrange thing is if I use a Android VM (Genymotion) I'm able to connect and everithing works correctly, but when I try to use it on a real device I get the error.
感谢您事先的任何评论。
Thank you in advance for any comment.
编辑：
这是code我使用创造了绑定，我使用的是6540端口和IP是192.168.42.130
This is the code I'm using to create the binding, I'm using the port 6540, and the IP is 192.168.42.130
public void run() {
try {
//here you must put your computer's IP address.
InetAddress serverAddr = InetAddress.getByName(SERVERIP);
Log.e("TCP Client", "C: Connecting...");
//create a socket to make the connection with the server
Connection = new Socket(serverAddr, SERVERPORT);
Log.e("TCP Client", "C: Connected...");
// Output Stream
OutStream = new DataOutputStream((OutputStream)Connection.getOutputStream());
// Input stream
InStream = new DataInputStream((InputStream)Connection.getInputStream());
while (ThreadStatus) {
try {
String message = myReadStream(InStream);
if (message.length() > 0) {
Log.e("TCP Client", "Received message ... " + message);
if (mMessageListener != null){
mMessageListener.messageReceived(message);
}
}
} catch (Exception e) {
ThreadStatus = false;
Log.e("TCP Client", "S: Error", e);
}
}
} catch (Exception e) {
Log.e("TCP Client", "C: Error", e);
} finally {
try {
Connection.close();
OutStream.close();
InStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (mConnectionEndListener != null){
mConnectionEndListener.notifyConnectionEnd();
}
}
我相信，当我尝试创建发生错误的插座（连接=新的Socket（serverAddr，SERVERPORT）; ）。
推荐答案
安卓isolatedProcess
android:isolatedProcess
如果设置为true，该服务将在一个从系统的其余部分隔离，并没有自己的权限特殊工艺运行。它唯一的通信是通过服务API（绑定和开始）。
If set to true, this service will run under a special process that is isolated from the rest of the system and has no permissions of its own. The only communication with it is through the Service API (binding and starting).
这篇关于Android的产生java.net.SocketException：套接字失败：EACCES（权限被拒绝）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
