使用如下代码,可检测Cocos2d-x中使用的libcurl库的版本信息
- #if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
- #include "../cocos2d/external/curl/include/ios/curl/curl.h"
- #endif
- #if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
- #include "../cocos2d/external/curl/include/android/curl/curl.h"
- #endif
- int getVersion()
- {
- CURLcode return_code;
- return_code = curl_global_init(CURL_GLOBAL_ALL);
- if(CURLE_OK != return_code)
- {
- log("init libcurl Failed");
- return -1;
- }
- log("curl_version=%s",curl_version());
- curl_version_info_data *p = curl_version_info(CURLVERSION_NOW);
- log("curl_version_info_data = %u",p->version_num);
- curl_global_cleanup();
- return 0;
- }
1、curl_global_init的参数flag
CURL_GLOBAL_ALLInitialize everything possible. This sets all known bits exceptCURL_GLOBAL_ACK_EINTR.
CURL_GLOBAL_SSLInitialize SSL
CURL_GLOBAL_WIN32Initialize the Win32 socket libraries.
CURL_GLOBAL_NOTHINGInitialise nothing extra. This sets no bit.
CURL_GLOBAL_DEFAULTA sensible default. It will init both SSL and Win32. Right now,this equals the functionality of theCURL_GLOBAL_ALLmask.
CURL_GLOBAL_ACK_EINTRWhen this flag is set,curl will acknowledge EINTR condition when connecting or when waiting for data. Otherwise,curl waits until full timeout elapses. (Added in 7.30.0)
2、curl_version_info_data结构体
3、curl_global_init初始化libcurl,CURL_GLOBAL_ALL会使libcurl初始化所有的子模块和一些默认的选项,这个一个比较好的默认值
- typedef struct {
- CURLversion age; /* age of the returned struct */
- const char *version; /* LIBCURL_VERSION */
- unsigned int version_num; /* LIBCURL_VERSION_NUM */
- const char *host; /* OS/host/cpu/machine when configured */
- int features; /* bitmask,see defines below */
- const char *ssl_version; /* human readable string */
- long ssl_version_num; /* not used anymore,always 0 */
- const char *libz_version; /* human readable string */
- /* protocols is terminated by an entry with a NULL protoname */
- const char * const *protocols;
- /* The fields below this were added in CURLVERSION_SECOND */
- const char *ares;
- int ares_num;
- /* This field was added in CURLVERSION_THIRD */
- const char *libidn;
- /* These field were added in CURLVERSION_FOURTH */
- /* Same as '_libiconv_version' if built with HAVE_ICONV */
- int iconv_ver_num;
- const char *libssh_version; /* human readable string */
- } curl_version_info_data;
4、curl_global_cleanup,释放资源,curl_global_init和curl_global_cleanup只能被调用一次。