I am new on SSL programming. The Android app I am developing needs to
open an SSL socket to a secure server which requires the client
authentication. When running on the Emulator and trying to talk to a
Server running on the host PC, the following Android code snippet
always gives me a SocketException at the line, SSLSocket c =
(SSLSocket) f.createSocket(hostName, 8888) :
private void openSslClient(String hostName)
{
try
{
KeyStore keyStore = KeyStore.getInstance
(KeyStore.getDefaultType());
InputStream fis = this.getAssets().open("client.bks");
keyStore.load(fis, "clientjks".toCharArray());
KeyManagerFactory kmf = KeyManagerFactory.getInstance
("X509");
kmf.init(keyStore, "clientkey".toCharArray());
TrustManagerFactory tmf = TrustManagerFactory.getInstance
("X509");
tmf.init(keyStore);
SSLContext sc = SSLContext.getInstance("TLS");
sc.init(kmf.getKeyManagers(), tmf.getTrustManagers(),
new SecureRandom());
SSLSocketFactory f = sc.getSocketFactory();
SSLSocket c = (SSLSocket) f.createSocket(hostName, 8888);
c.startHandshake();
w = new BufferedWriter(new OutputStreamWriter
(c.getOutputStream()));
r = new BufferedReader(new InputStreamReader
(c.getInputStream()));
} catch (Exception e)
{
Log.e(LOG_TAG, "openSslClient failed", e);
}
}
The stack trace looks like below:
03-11 21:24:00.585: ERROR/OSNetworkSystem(1093): unknown socket error
-1
03-11 21:24:07.156: ERROR/PatientDataUploader(1093): openSslClient
failed
03-11 21:24:07.156: ERROR/PatientDataUploader(1093):
java.net.SocketException: unknown error
03-11 21:24:07.156: ERROR/PatientDataUploader(1093): at
org.apache.harmony.luni.platform.OSNetworkSystem.createSocketImpl
(Native Method)
03-11 21:24:07.156: ERROR/PatientDataUploader(1093): at
org.apache.harmony.luni.platform.OSNetworkSystem.createSocket
(OSNetworkSystem.java:79)
03-11 21:24:07.156: ERROR/PatientDataUploader(1093): at
org.apache.harmony.luni.net.PlainSocketImpl2.create
(PlainSocketImpl2.java:59)
03-11 21:24:07.156: ERROR/PatientDataUploader(1093): at
java.net.Socket.startupSocket(Socket.java:668)
03-11 21:24:07.156: ERROR/PatientDataUploader(1093): at
java.net.Socket.<init>(Socket.java:142)
03-11 21:24:07.156: ERROR/PatientDataUploader(1093): at
javax.net.ssl.SSLSocket.<init>(SSLSocket.java:42)
03-11 21:24:07.156: ERROR/PatientDataUploader(1093): at
org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.<init>
(OpenSSLSocketImpl.java:179)
03-11 21:24:07.156: ERROR/PatientDataUploader(1093): at
org.apache.harmony.xnet.provider.jsse.OpenSSLSocketFactoryImpl.createSocket
(OpenSSLSocketFactoryImpl.java:65)
The server test program I am using is a modified version of
SslReverseEchoer available on Dr. Herong Yang's website. It looks like
below:
public static void main(String[] args) {
if (args.length < 3) {
System.out.println("Usage:");
System.out
.println(" java
SslReverseEchoerRevised ksName ksPass ctPass
ipAddr");
return;
}
String ksName = args[0];
char[] ksPass = args[1].toCharArray();
char[] ctPass = args[2].toCharArray();
String ipAddr = args[3];
try {
KeyStore ks = KeyStore.getInstance("BKS");
ks.load(new FileInputStream(ksName), ksPass);
KeyManagerFactory kmf =
KeyManagerFactory.getInstance("SunX509");
kmf.init(ks, ctPass);
TrustManagerFactory tmf =
TrustManagerFactory.getInstance("X509");
tmf.init(ks);
SSLContext sc = SSLContext.getInstance("TLS");
sc.init(kmf.getKeyManagers(), tmf.getTrustManagers(),
null);
SSLServerSocketFactory ssf =
sc.getServerSocketFactory();
SSLServerSocket s = (SSLServerSocket)
ssf.createServerSocket(8888,
1, InetAddress.getByName(ipAddr));
s.setNeedClientAuth(true);
printServerSocketInfo(s);
SSLSocket c = (SSLSocket) s.accept();
printSocketInfo(c);
BufferedWriter w = new BufferedWriter(new
OutputStreamWriter(c
.getOutputStream()));
BufferedReader r = new BufferedReader(new
InputStreamReader(c
.getInputStream()));
String m = "Welcome to SSL Reverse Echo Server."
+ " Please type in some words.";
w.write(m, 0, m.length());
w.newLine();
w.flush();
while ((m = r.readLine()) != null) {
if (m.equals("."))
break;
char[] a = m.toCharArray();
int n = a.length;
for (int i = 0; i < n / 2; i++) {
char t = a[i];
a[i] = a[n - 1 - i];
a[n - i - 1] = t;
}
w.write(a, 0, n);
w.newLine();
w.flush();
}
w.close();
r.close();
c.close();
s.close();
} catch (Exception e) {
System.err.println(e.toString());
}
}
Can someone shed some light on this?
Thank you in advance.
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