wasync not working for Android API Level < 25

[phillippbertram]

Hi there!

I am using wasync 2.3.1 in my current Project and everything worked fine till I tried my app on an API-Level < 25. My app crashes when creating the socket from the client because of an java.lang.VerifyError for JDKAsyncHttpProvider.

Example Code:

AtmosphereClient client = ClientFactory.getDefault().newClient(AtmosphereClient.class);

RequestBuilder request = client.newRequestBuilder()
        .method(Request.METHOD.GET)
        .uri("" + "/suspend")
        .enableProtocol(true)
        .transport(Request.TRANSPORT.LONG_POLLING);


Socket socket = client.create(); // <--- here it crashes!!!

try {
    socket.on(new Function<Reader>() {
        @Override
        public void on(Reader r) {
            // Read the response
            Log.d("WebSocket", "response");
        }
    }).on(new Function<IOException>() {

        @Override
        public void on(IOException ioe) {
            // Some IOException occurred
            Log.d("WebSocket", "IOException");
        }

    }).open(request.build()).fire("echo").fire("bong");
} catch (IOException e) {
    e.printStackTrace();
}

I also tried many other Client implementations, but always with the same result.

I get following stacktrace:

java.lang.VerifyError: com/ning/http/client/providers/jdk/JDKAsyncHttpProvider
                       at com.ning.http.client.AsyncHttpClient.loadDefaultProvider(AsyncHttpClient.java:591)
                       at com.ning.http.client.AsyncHttpClient.<init>(AsyncHttpClient.java:187)
                       at org.atmosphere.wasync.impl.ClientUtil.createDefaultAsyncHttpClient(ClientUtil.java:51)
                       at org.atmosphere.wasync.impl.ClientUtil.createDefaultAsyncHttpClient(ClientUtil.java:38)
                       at org.atmosphere.wasync.impl.ClientUtil.create(ClientUtil.java:76)
                       at org.atmosphere.wasync.impl.AtmosphereClient.create(AtmosphereClient.java:41)
                       at ...

After unsuccessfully reading several threads and wasting much time, I just downgraded wasync to 2.1.2 and the error was gone but other issues occured.

Furthermore I tried the official android-chat with the same result.

I also unsuccessfully tested this with other AHC Provider (Grizzly, Netty).

Here is a table with all the results for each wAsync Version and Android API Level I have tried:

wAsync Version	Android API Level	Result
2.1.3	25	yes
2.1.3	23	No virtual methos setEndpointIdentificationAlgorithm(Ljava/lang/String;) in class Ljavax/net/ssl/SSLParameters; ...
2.1.3	19	java.lang.VerifyError: com/ning/http/client/providers/jdk/JDKAsyncHttpProvider
2.1.3	17	java.lang.VerifyError: com/ning/http/client/providers/jdk/JDKAsyncHttpProvider
2.1.2	25	yes
2.1.2	19	NoSuchMethodError javax.net.ssl.SSLParameters.sendEndpointIdentificationAlgorithm
2.1.2	17	java.lang.NullPointerException: ssl == null / java.lang.ExceptionInInitializerError
2.1.0	19	NoSuchMethodError javax.net.ssl.SSLParameters.sendEndpointIdentificationAlgorithm
1.4.3	25	java.lang.NullPointerException: ssl == null
1.4.3	23	java.lang.NullPointerException: ssl == null
1.4.3	19	java.io.IOException: Remotely Closed
1.4.3	17	java.io.IOException: Remotely Closed

[erobic]

I am facing exactly same problems. Have you guys found out the solution?

[phillippbertram]

Unfortunately no 😢

We just used Version 1.4.3 because it was the most stable one for our API Level range. We could handle the java.io.IOException: Remotely Closed Exception, because it was just thrown because of an self signed certificate on server side.

I am still waiting for any feedback 🙄

[ricardojlrufino]

I think the supported minimum should be API 19