[英]keep-alive curl C htttps POST
With this code I am sending strings to a webserver using libcurl and write the data to a MySQL (is done at the webserver). 通过此代码,我使用libcurl将字符串发送到Web服务器,并将数据写入MySQL(在Web服务器上完成)。 My Problem is that for every call of this function the program starts a new key exchange with the webserver.
我的问题是,对于此函数的每次调用,程序都会与Web服务器启动新的密钥交换。 I would like to have a persistant connection to the Server.
我想与服务器建立持久连接。 I searched here and web already and didnt find any satisfying solutions.
我已经在这里搜索和搜索网页,没有找到令人满意的解决方案。 Multi-handler and forced keep alive still open a new connection.
多处理程序和强制保持活动状态仍会打开新连接。
Following is my Code to establish an SSL Connection: 以下是我的建立SSL连接的代码:
CURL *curl;
CURLcode res;
res = curl_global_init(CURL_GLOBAL_DEFAULT); // Check for errors
if(res != CURLE_OK) {
fprintf(stderr, "curl_global_init() failed: %s\n",
curl_easy_strerror(res));
return 1;
}
// curl handler
curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, STRING);
curl_easy_setopt(curl, CURLOPT_URL, "https://IP/something/something.php");
curl_easy_setopt(curl, CURLOPT_TCP_KEEPALIVE, 1L);
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L); //verbose output activated
struct curl_slist *headers=NULL;
headers = curl_slist_append(headers, "Content-Type: application/json"); // type JSON
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
// Perform the request, res will get the return code
res = curl_easy_perform(curl);
// Check for errors
if(res != CURLE_OK)
fprintf(stderr, "curl_easy_perform() failed: %s\n",
curl_easy_strerror(res));
// cleanup
curl_slist_free_all(headers);
curl_easy_cleanup(curl);
}
curl_global_cleanup();
is Answered by Daniel Stenberg here , which is a similar/the same question. 由Daniel Stenberg 在这里回答,这是一个相似/相同的问题。
Re-use the same curl handle in subsequent requests!
在后续请求中重复使用相同的卷曲手柄! Don't call curl_easy_cleanup(curl) and curl_easy_init() again between them.
不要在它们之间再次调用curl_easy_cleanup(curl)和curl_easy_init()。
So the Solution is to call curl_easy_cleanup(curl) and curl_easy_init() only once. 因此,解决方案是只调用一次curl_easy_cleanup(curl)和curl_easy_init()。
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