curl无法连接到Android中的互联网

Question

I have successfully built curl and a jni wrapper for it. However, when I execute the code in the emulator I get "Couldn't resolve host 'www.google.com'". If I provide the IP instead of a DNS name I get "couldn't connect to host". I am not behind a proxy so I have eliminated that possibility.

I am not sure if there is a setting in the emulator that I need to make to allow a native app to communicate with the internet. Any help would be appreciated. I have verified that connectivity to the internet exists via the adb shell.

# nc -z -v www.google.com 80
DNS fwd/rev mismatch: www.l.google.com != vw-in-f147.1e100.net
DNS fwd/rev mismatch: www.l.google.com != vw-in-f103.1e100.net
DNS fwd/rev mismatch: www.l.google.com != vw-in-f106.1e100.net
DNS fwd/rev mismatch: www.l.google.com != vw-in-f105.1e100.net
DNS fwd/rev mismatch: www.l.google.com != vw-in-f99.1e100.net
DNS fwd/rev mismatch: www.l.google.com != vw-in-f104.1e100.net
www.l.google.com [74.125.113.147] 80 (www) open

Thanks.

Answer 1

I know that this is very late reply, but googling information on this is so difficult that I though I add my input for the future googlers.

I have been working with the same problem and it seems that this is related to gethostbyname not working behind a proxy. In the environment where there are no proxies things seem to work fine. Also in my environment the proxy requires user name and password, so it may be even more difficult the get things working.

Answer 2

I figured out that the application manifest was missing permission to access the internet.

<uses-permission android:name="android.permission.INTERNET"/>

Answer 3

I finally got this to work. In case anyone is interested it seems like this issue is present only when the jni shared lib is statically linked to curl and other dependents. It works fine when the shared libs are loaded dynamically.