Porting Common Libraries - Android NDK Game Development

Game Development Reference

In-Depth Information

5.

Further compilation requires a usual set of Android.mk/Application.mk iles,

which is also available in the accompanying materials.

How it works…

A simplistic usage example looks like the following:

CURL* Curl = curl_easy_init();

curl_easy_setopt( Curl, CURLOPT_URL, “http://www.google.com” );

curl_easy_setopt( Curl, CURLOPT_FOLLOWLOCATION, 1 );

curl_easy_setopt( Curl, CURLOPT_FAILONERROR, true );

curl_easy_setopt( Curl, CURLOPT_WRITEFUNCTION, &MemoryCallback );

curl_easy_setopt( Curl, CURLOPT_WRITEDATA, 0 );

curl_easy_perform( Curl );

curl_easy_cleanup( Curl );

Here MemoryCallback() is a function that handles the received data. A minimalistic unsafe

implementation to dump a network response to the terminal can be as follows:

size_t MemoryCallback( void* P, size_t Size, size_t Num, void* )

{

printf( (unsigned char*)P) );

}

The retrieved data will be printed on the screen in the Windows application. The same code

will work like a dummy in Android, without producing any visible side effects.

There's more…

In order to work with SSL-encrypted connections, we need to tell libcurl where our system

certiicates are located. This can be done with CURL_CA_BUNDLE deined in the beginning of

the curl_config.h ile:

#define CURL_CA_BUNDLE “/etc/ssl/certs/ca-certificates.crt”