Slow invoking on Android client

[blackspiritus]

Hi,

I am using your library for an Android app. When I get data on my Android app from my SignalR server invoked from a C# form, the data comes almost instantly. But when I send data from my Android client to my SignalR server, it takes a while before the server gets the data. Now I can't seem to find any solution for it. Do you know any solution? I have also a website that can communicate with the server and this works perfectly.

Regards,
Gillan

[erizet]

Hi, I'm sorry but I don't know why invoking the server is slow. Try to use fiddler to analyze the traffic. Look for a Send message from your Android app.

Btw, I'm curious, what kind of app have you developed? Is it published?

[blackspiritus]

I'll try analyzing the traffic. It's an app to communicate with a machine, which has code written in C++, the code sends data to a C# form and the C# form uses signalR to send the button states to the client and vice versa. it's not published yet because it is in an early development state, searching for the best method to do this.

[erizet]

I have the same issue as you when running from a real device. :( It's working as expected in the emulator.

[blackspiritus]

I only tried it on a real device. But I'm relieved it has nothing to do with the app itself.

[robfe]

Erizet, What version of the SDK is your emulator running? If it's below honeycomb then try something higher.

I think i've solved this (if you're getting the same problem as me). This affects versions of the SDK above Honeycomb. In the basic http client's com.turbomanage.httpclient.android.DoHttpRequestTask, put a breakpoint on execute and doInBackground. When the "send" url is used, I get the execute being called but not the doInBackground.

I tried the fix from http://stackoverflow.com/a/11977186/21433 (plenty of links to deeper discussions):

public void execute(HttpRequest httpRequest) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB)
        super.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, httpRequest);
    else
        super.execute(httpRequest);
}

And I get instant performance!

Note that I had to upgrade the basic http client to use a min SDK version of 11. There is already some discussion up at basic-http-client (https://code.google.com/p/basic-http-client/issues/detail?id=15) with some suggestions on workarounds for users of basic-http-client that doesn't involve editing the basic-http-client source code.

[erizet]

Yes, you have solved it. :) The discussion over at basic-http-client is "my" discussion. :)
I have implemented a paralell version of basic-http-client. I'll commit the changes soon.

[robfe]

Have you pushed the changes up yet? (I thought that if you'd closed the issue, you would have already)

[erizet]

My bad! I forgot it. I'll do it tonight.

[erizet]

Look at the para branch!

[erizet]

Included in the new release..

[inventde]

erizet i love this library and it works perfect for my project, but the only issue i'm having is that my application crashes when i'm offline. how can i resolve this issue?

[erizet]

First of all, please open a new issue. Then if possible include a stacktrace.