我希望有人可以为我的问题做出贡献。我花了很多时间寻找解决方案，包括这个论坛，但还没有成功。
我有一个php套接字服务器正在运行，我正在尝试让我的android应用程序连接到它并交换数据。我知道php服务器工作，至少对于一个php客户端，所以我猜这个问题是在android客户端的某个地方。
该应用程序在Android 7“平板电脑，Android 2.1
上运行以下是我认为最相关的代码片段。我认为重要的是要提到这种情况发生在有Wi-Fi连接而不是。我确定我不需要清单中显示的所有权限，但我将其包含在我读过的其中一个主题的建议中。
抛出的异常说：“java.net.SocketTimeoutException：Socket未连接”。我试过没有运气就增加了超时限制
这是尝试连接外部服务器的Android客户端：
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketAddress;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
public class test extends Activity{
private static final String TAG = "socketTest";
public SocketAddress remoteAdr = new InetSocketAddress("111.222.333.444", 1234);
public Socket socket;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Log.d(TAG, "Start the socket thread..");
startThread();
}
void startThread(){
Thread t = new Thread(){
public void run(){
Log.d(TAG, "Socket thread started !");
boolean loop = true;
while(loop){
try{
Log.d(TAG, "Create the socket");
socket = new Socket();
Log.d(TAG, "Try to connect the socket");
socket.connect(remoteAdr, 15000);
Log.d(TAG, "I'm never shown..");
}catch(Exception e){
Log.e(TAG, "Error when connecting: " + e);
}
Log.d(TAG, "Done trying");
loop = false;
}
}
};
t.start();
}
}
我的清单文件如下：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.henda.test"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="7" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_CHECKIN_PROPERTIES"></uses-permission>
<uses-permission android:name="android.permission.CHANGE_CONFIGURATION"></uses-permission>
<uses-permission android:name="android.permission.DUMP"></uses-permission>
<uses-permission android:name="android.permission.WRITE_OWNER_DATA"></uses-permission>
<uses-permission android:name="android.permission.READ_INPUT_STATE"></uses-permission>
<uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE"></uses-permission>
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name="com.socket.test.test"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
php socket服务器：
$loop = 1;
set_time_limit (1);
// set some variables
$host="111.222.333.444";
$port = 1234;
// Create the socket, bind it to a port and start listening (accepts 3 connectinons in the queue).
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or die("Could not create socket \n");
$result = socket_bind($socket, $host, $port) or die("Could not bind to socket \n");
$result = socket_listen($socket, 3) or die("Could not set up socket listener \n");
do{
// spawn another socket to handle communication and
$spawn = socket_accept($socket) or die("Could not accept incoming connection \n");
// Accept incoming connections and wait for user input
$input = socket_read($spawn, 1024) or die("Could not read input \n");
switch(trim($input)){
case "someCase":{
// do something here, f.x. connect to a database
// code omitted
break;
}
case "END":
{
$loop = 0;
break;
}
}while($loop);
socket_close($socket);
我已经尝试用
查看我的InetSocketAddress是否有效InetSocketAddress p1 = (InetSocketAddress)remoteAdr;
Log.d(TAG, "isUnresolved: " + p1.isUnresolved());
使用正确的IP地址和端口号，返回false。
然后为了比较，我尝试了一个不存在的不同IP地址。这在isUnresolved（）检查中返回true。 port.connect（）抛出一个UnknownHostException，并显示消息“Host is unresolved”。
从这个测试中我猜我的InetSocketAddress是有效的。
有没有人知道为什么我的客户会超时？
编辑： 我在HTC Desire上尝试了我的代码（见上文）并且日志显示了相同的信息，因此看起来好像这个问题没有修复到我的平板电脑上。我在代码中遗漏了一些东西，无论是在客户端还是服务器端？
我想知道服务器是否拒绝连接，这就是客户端超时的原因。我的意思是我的InetSocketAddress是有效的所以我必须做正确的事。
我包含使用“adb logcat t：D AndroidRuntime：E”生成的日志。有没有人在阅读此日志后有线索
----------------------------------------------------------------------------------
D/t ( 1132): --------------------------------------------
D/t ( 1132): Start the socket thread..
D/t ( 1132): Socket thread started !
D/t ( 1132): Create the socket
D/t ( 1132): Try to connect the socket
W/InputManagerService( 738): Starting input on non-focused client com.android.internal.view.IInputMethodClient$Stub$Proxy@46fe5eb0 (uid=10001 pid=831)
I/startInputInner( 831): mService.startInput fail,retry left=2
W/InputManagerService( 738): Starting input on non-focused client com.android.internal.view.IInputMethodClient$Stub$Proxy@46fe5eb0 (uid=10001 pid=831)
I/startInputInner( 831): mService.startInput fail,retry left=1
W/InputManagerService( 738): Starting input on non-focused client com.android.internal.view.IInputMethodClient$Stub$Proxy@46fe5eb0 (uid=10001 pid=831)
I/startInputInner( 831): mService.startInput fail,retry left=0
W/InputManagerService( 738): Starting input on non-focused client com.android.internal.view.IInputMethodClient$Stub$Proxy@46fe5eb0 (uid=10001 pid=831)
I/ActivityManager( 738): Displayed activity com.henda.test/com.socket.test.test: 350 ms (total 350 ms)
I/startInputInner( 1132): mService.startInput fail,retry left=2
I/startInputInner( 1132): mService.startInput fail,retry left=1
I/startInputInner( 1132): mService.startInput fail,retry left=0
E/libagl ( 738): copybit failed (Unknown error: -1)
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER RSSI-APPROX] reply=[WIFI RSSI -54
D/WPA_CTRL_IFACE( 2064): ]
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER LINKSPEED] reply=[LINKSPEED 54
D/WPA_CTRL_IFACE( 2064): ]
D/dalvikvm( 738): GC freed 1990 objects / 104424 bytes in 169ms
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER RSSI-APPROX] reply=[WIFI RSSI -55
D/WPA_CTRL_IFACE( 2064): ]
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER LINKSPEED] reply=[LINKSPEED 48
D/WPA_CTRL_IFACE( 2064): ]
D/dalvikvm( 1529): GC freed 261 objects / 14536 bytes in 80ms
D/dalvikvm(11058): GC freed 8233 objects / 526624 bytes in 87ms
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER RSSI-APPROX] reply=[WIFI RSSI -57
D/WPA_CTRL_IFACE( 2064): ]
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER LINKSPEED] reply=[LINKSPEED 48
D/WPA_CTRL_IFACE( 2064): ]
D/dalvikvm( 976): GC freed 215 objects / 17880 bytes in 94ms
D/dalvikvm(11058): GC freed 8566 objects / 519976 bytes in 83ms
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER RSSI-APPROX] reply=[WIFI RSSI -53
D/WPA_CTRL_IFACE( 2064): ]
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER LINKSPEED] reply=[LINKSPEED 48
D/WPA_CTRL_IFACE( 2064): ]
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER RSSI-APPROX] reply=[WIFI RSSI -53
D/WPA_CTRL_IFACE( 2064): ]
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER LINKSPEED] reply=[LINKSPEED 1
D/WPA_CTRL_IFACE( 2064): ]
D/dalvikvm( 1523): GC freed 43 objects / 2064 bytes in 73ms
D/dalvikvm(11058): GC freed 8232 objects / 526504 bytes in 87ms
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER RSSI-APPROX] reply=[WIFI RSSI -52
D/WPA_CTRL_IFACE( 2064): ]
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER LINKSPEED] reply=[LINKSPEED 54
D/WPA_CTRL_IFACE( 2064): ]
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER RSSI-APPROX] reply=[WIFI RSSI -54
D/WPA_CTRL_IFACE( 2064): ]
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER LINKSPEED] reply=[LINKSPEED 48
D/WPA_CTRL_IFACE( 2064): ]
D/dalvikvm( 2199): GC freed 499 objects / 24120 bytes in 95ms
D/dalvikvm(11058): GC freed 8566 objects / 519944 bytes in 84ms
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER RSSI-APPROX] reply=[WIFI RSSI -55
D/WPA_CTRL_IFACE( 2064): ]
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER LINKSPEED] reply=[LINKSPEED 48
D/WPA_CTRL_IFACE( 2064): ]
D/dalvikvm( 831): GC freed 1006 objects / 55656 bytes in 107ms
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER RSSI-APPROX] reply=[WIFI RSSI -54
D/WPA_CTRL_IFACE( 2064): ]
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER LINKSPEED] reply=[LINKSPEED 48
D/WPA_CTRL_IFACE( 2064): ]
D/dalvikvm(11058): GC freed 8231 objects / 526584 bytes in 83ms
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER RSSI-APPROX] reply=[WIFI RSSI -53
D/WPA_CTRL_IFACE( 2064): ]
D/WPA_CTRL_IFACE( 2064): Global Control: cmd=[DRIVER LINKSPEED] reply=[LINKSPEED 36
D/WPA_CTRL_IFACE( 2064): ]
E/t ( 1132): Error when connecting: java.net.SocketTimeoutException: Socket is not connected
D/t ( 1132): Done trying
答案 0 :(得分：0)
首先检查您的网络连接类型，如果您使用的是wifi，问题可能是由您设置的wifi频道引起的，更改它＆amp;再试一次。
祝你好运。