Exception In Thread "main" Org.openqa.selenium.remote.UnreachableBrowserException: Could Not Start A New Session, When Using Appium

Getting an error always while running code for Appium server which is running on my machine. Could anyone help me out from this. I had followed some threads but none of them could

Solution 1:

I managed to reproduce the problem. The problem occurs because for appium takes relatively long time to start. You can see it if copy the command line that you built to the cmd prompt and launch it. It takes about 30 sec for appium to be ready. So the dirty solution is just to add Thread.sleep(30000); after aServer.startServer(); in the mobile script. The better solution is wait until appium will ready. For this purpose I think the best approach - read output stream and verify that it contains the expected response.

This simple code shows this approach (without the response verification)

InputStream is = new InputStream() {
    @Override
    public int read() throws IOException {
        return 0;
    }
};
executor.getStreamHandler().setProcessOutputStream(is);
try {
     executor.execute(command, resultHandler);
     for (int i=1; i<10; i++) {
         int nRead = is.read();
         if(nRead!=0)
             break;
         Thread.sleep(5000);
         }
     }catch (IOException e) {
            e.printStackTrace();
     }catch (InterruptedException e) {
            e.printStackTrace();
     }
}