学校自己做的网站需要买服务器吗,电子商务平台网站源码,中小网站公司做的推广怎么样,seo优化杭州最近有个需求#xff0c;需要用c请求下我自己的服务器#xff0c;周末看了一下怎么发起http请求。 官方文档见#xff1a; https://curl.se/libcurl/c/example.html 官网的demo是基于c的#xff0c;我用的时候报错了。下面是我写的get/post的方法#xff0c;同步执行。
n…最近有个需求需要用c请求下我自己的服务器周末看了一下怎么发起http请求。 官方文档见 https://curl.se/libcurl/c/example.html 官网的demo是基于c的我用的时候报错了。下面是我写的get/post的方法同步执行。
namespace yeshen_http
{struct MemoryStruct{char *memory;size_t size;};static size_tWriteMemoryCallback(void *contents, size_t size, size_t nmemb, void *userp){size_t realsize size * nmemb;struct MemoryStruct *mem (struct MemoryStruct *)userp;void *ptr realloc(mem-memory, mem-size realsize 1);if (!ptr){std::cout not enough memory (realloc returned NULL) std::endl;return 0;}mem-memory (char *)ptr;memcpy((mem-memory[mem-size]), contents, realsize);mem-size realsize;mem-memory[mem-size] 0;return realsize;}static const char *get_url https://yeshen.org;
}int HTTP::get(const char *url, std::string response)
{CURL *curl curl_easy_init();struct yeshen_http::MemoryStruct chunk;chunk.memory (char *)malloc(1);chunk.size 0;if (curl){curl_easy_setopt(curl, CURLOPT_URL, url);curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, yeshen_http::WriteMemoryCallback);curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)chunk);CURLcode res curl_easy_perform(curl);int retCode -1;if (res ! CURLE_OK){std::cerr curl_easy_perform() failed: curl curl_easy_strerror(res) std::endl;}else if (chunk.size 0){std::cout (unsigned long)chunk.size bytes retrieved std::endl;}else{std::cout (unsigned long)chunk.size bytes retrieved std::endl;response chunk.memory;retCode 0;}free(chunk.memory);curl_easy_cleanup(curl);return retCode;}return -1;
}int HTTP::post(const char *url, const std::string data)
{CURL *curl curl_easy_init();if (curl){const char *data_str data.c_str();curl_easy_setopt(curl, CURLOPT_URL, url);curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data_str);curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, (long)strlen(data_str));CURLcode res curl_easy_perform(curl);if (res ! CURLE_OK){std::cerr curl_easy_perform() failed: curl_easy_strerror(res) std::endl;return -1;}curl_easy_cleanup(curl);return 0;}return -1;
}cmake部分的处理
target_link_libraries(${YESHEN_TARGET_NAME} PRIVATE libcurl.so
)
