Mixing
“SocketTimeoutException: failed to connect to” only from the Samsung S5 device
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I have a very strange issue with my TCP communication app.
I made it a long time ago and I never experienced any problem.
It's a simple send & receive packets through a TCP socket.
But I don't know how, this week I ran it on a Samsung Galaxy S5, and I did not succeed in establishing the connection with the server.
serverSocket.connect(new InetSocketAddress(mServerIPV6.getHostAddress(), Network.COMMUNICATION_PORT), (int) (3 * DateUtils.SECOND_IN_MILLIS));
always returns :
java.net.SocketTimeoutException: failed to connect to /fe80::d6ae:5ff:fe43:c6e9%wlan0%23 (port 60001) after 3000ms
but the craziest thing is that it succeed in finding the IP address of the server through the network service discovery (UDP). So the problem does not come from the Wi-Fi network and it only happens with this device (Samsung S5). Very strange. Any idea?
android sockets tcp samsung-mobile s5 asked Jan 3 at 9:22
DenisDenis
310521
add a comment |
I have a very strange issue with my TCP communication app.
I made it a long time ago and I never experienced any problem.
It's a simple send & receive packets through a TCP socket.
But I don't know how, this week I ran it on a Samsung Galaxy S5, and I did not succeed in establishing the connection with the server.
serverSocket.connect(new InetSocketAddress(mServerIPV6.getHostAddress(), Network.COMMUNICATION_PORT), (int) (3 * DateUtils.SECOND_IN_MILLIS));
always returns :
java.net.SocketTimeoutException: failed to connect to /fe80::d6ae:5ff:fe43:c6e9%wlan0%23 (port 60001) after 3000ms
but the craziest thing is that it succeed in finding the IP address of the server through the network service discovery (UDP). So the problem does not come from the Wi-Fi network and it only happens with this device (Samsung S5). Very strange. Any idea?
android sockets tcp samsung-mobile s5 asked Jan 3 at 9:22
DenisDenis
310521
add a comment |
I have a very strange issue with my TCP communication app.
I made it a long time ago and I never experienced any problem.
It's a simple send & receive packets through a TCP socket.
But I don't know how, this week I ran it on a Samsung Galaxy S5, and I did not succeed in establishing the connection with the server.
serverSocket.connect(new InetSocketAddress(mServerIPV6.getHostAddress(), Network.COMMUNICATION_PORT), (int) (3 * DateUtils.SECOND_IN_MILLIS));
always returns :
java.net.SocketTimeoutException: failed to connect to /fe80::d6ae:5ff:fe43:c6e9%wlan0%23 (port 60001) after 3000ms
but the craziest thing is that it succeed in finding the IP address of the server through the network service discovery (UDP). So the problem does not come from the Wi-Fi network and it only happens with this device (Samsung S5). Very strange. Any idea?
android sockets tcp samsung-mobile s5 asked Jan 3 at 9:22
DenisDenis
310521
I have a very strange issue with my TCP communication app.
I made it a long time ago and I never experienced any problem.
It's a simple send & receive packets through a TCP socket.
But I don't know how, this week I ran it on a Samsung Galaxy S5, and I did not succeed in establishing the connection with the server.
serverSocket.connect(new InetSocketAddress(mServerIPV6.getHostAddress(), Network.COMMUNICATION_PORT), (int) (3 * DateUtils.SECOND_IN_MILLIS));
always returns :
java.net.SocketTimeoutException: failed to connect to /fe80::d6ae:5ff:fe43:c6e9%wlan0%23 (port 60001) after 3000ms
but the craziest thing is that it succeed in finding the IP address of the server through the network service discovery (UDP). So the problem does not come from the Wi-Fi network and it only happens with this device (Samsung S5). Very strange. Any idea?
android sockets tcp samsung-mobile s5 android sockets tcp samsung-mobile s5 asked Jan 3 at 9:22
DenisDenis
310521
asked Jan 3 at 9:22
DenisDenis
310521
asked Jan 3 at 9:22
DenisDenis
310521
asked Jan 3 at 9:22
DenisDenis
310521
asked Jan 3 at 9:22
DenisDenis
310521
310521
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
If you're using older devices you may need to enable TLS version 1.2.
You can do this with an Okhttpclient builder.
public static OkHttpClient.Builder enableTls12OnPreLollipop(OkHttpClient.Builder client) {
if (Build.VERSION.SDK_INT >= 16 && Build.VERSION.SDK_INT < 22) {
try {
SSLContext sc = SSLContext.getInstance("TLSv1.2");
sc.init(null, null, null);
client.sslSocketFactory(new Tls12SocketFactory(sc.getSocketFactory()));
ConnectionSpec cs = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
.tlsVersions(TlsVersion.TLS_1_2)
.build();
List<ConnectionSpec> specs = new ArrayList<>();
specs.add(cs);
specs.add(ConnectionSpec.COMPATIBLE_TLS);
specs.add(ConnectionSpec.CLEARTEXT);
client.connectionSpecs(specs);
} catch (Exception exc) {
Log.e("OkHttpTLSCompat", "Error while setting TLS 1.2", exc);
}
}
return client;
}
answered Jan 3 at 9:39
Joshua BestJoshua Best
15512
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
If you're using older devices you may need to enable TLS version 1.2.
You can do this with an Okhttpclient builder.
public static OkHttpClient.Builder enableTls12OnPreLollipop(OkHttpClient.Builder client) {
if (Build.VERSION.SDK_INT >= 16 && Build.VERSION.SDK_INT < 22) {
try {
SSLContext sc = SSLContext.getInstance("TLSv1.2");
sc.init(null, null, null);
client.sslSocketFactory(new Tls12SocketFactory(sc.getSocketFactory()));
ConnectionSpec cs = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
.tlsVersions(TlsVersion.TLS_1_2)
.build();
List<ConnectionSpec> specs = new ArrayList<>();
specs.add(cs);
specs.add(ConnectionSpec.COMPATIBLE_TLS);
specs.add(ConnectionSpec.CLEARTEXT);
client.connectionSpecs(specs);
} catch (Exception exc) {
Log.e("OkHttpTLSCompat", "Error while setting TLS 1.2", exc);
}
}
return client;
}
answered Jan 3 at 9:39
Joshua BestJoshua Best
15512
add a comment |
If you're using older devices you may need to enable TLS version 1.2.
You can do this with an Okhttpclient builder.
public static OkHttpClient.Builder enableTls12OnPreLollipop(OkHttpClient.Builder client) {
if (Build.VERSION.SDK_INT >= 16 && Build.VERSION.SDK_INT < 22) {
try {
SSLContext sc = SSLContext.getInstance("TLSv1.2");
sc.init(null, null, null);
client.sslSocketFactory(new Tls12SocketFactory(sc.getSocketFactory()));
ConnectionSpec cs = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
.tlsVersions(TlsVersion.TLS_1_2)
.build();
List<ConnectionSpec> specs = new ArrayList<>();
specs.add(cs);
specs.add(ConnectionSpec.COMPATIBLE_TLS);
specs.add(ConnectionSpec.CLEARTEXT);
client.connectionSpecs(specs);
} catch (Exception exc) {
Log.e("OkHttpTLSCompat", "Error while setting TLS 1.2", exc);
}
}
return client;
}
answered Jan 3 at 9:39
Joshua BestJoshua Best
15512
add a comment |
If you're using older devices you may need to enable TLS version 1.2.
You can do this with an Okhttpclient builder.
public static OkHttpClient.Builder enableTls12OnPreLollipop(OkHttpClient.Builder client) {
if (Build.VERSION.SDK_INT >= 16 && Build.VERSION.SDK_INT < 22) {
try {
SSLContext sc = SSLContext.getInstance("TLSv1.2");
sc.init(null, null, null);
client.sslSocketFactory(new Tls12SocketFactory(sc.getSocketFactory()));
ConnectionSpec cs = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
.tlsVersions(TlsVersion.TLS_1_2)
.build();
List<ConnectionSpec> specs = new ArrayList<>();
specs.add(cs);
specs.add(ConnectionSpec.COMPATIBLE_TLS);
specs.add(ConnectionSpec.CLEARTEXT);
client.connectionSpecs(specs);
} catch (Exception exc) {
Log.e("OkHttpTLSCompat", "Error while setting TLS 1.2", exc);
}
}
return client;
}
answered Jan 3 at 9:39
Joshua BestJoshua Best
15512
If you're using older devices you may need to enable TLS version 1.2.
You can do this with an Okhttpclient builder.
public static OkHttpClient.Builder enableTls12OnPreLollipop(OkHttpClient.Builder client) {
if (Build.VERSION.SDK_INT >= 16 && Build.VERSION.SDK_INT < 22) {
try {
SSLContext sc = SSLContext.getInstance("TLSv1.2");
sc.init(null, null, null);
client.sslSocketFactory(new Tls12SocketFactory(sc.getSocketFactory()));
ConnectionSpec cs = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
.tlsVersions(TlsVersion.TLS_1_2)
.build();
List<ConnectionSpec> specs = new ArrayList<>();
specs.add(cs);
specs.add(ConnectionSpec.COMPATIBLE_TLS);
specs.add(ConnectionSpec.CLEARTEXT);
client.connectionSpecs(specs);
} catch (Exception exc) {
Log.e("OkHttpTLSCompat", "Error while setting TLS 1.2", exc);
}
}
return client;
}
answered Jan 3 at 9:39
Joshua BestJoshua Best
15512
answered Jan 3 at 9:39
Joshua BestJoshua Best
15512
answered Jan 3 at 9:39
Joshua BestJoshua Best
15512
answered Jan 3 at 9:39
Joshua BestJoshua Best
15512
15512
add a comment |
add a comment |
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