CURLOPT_CLOSESOCKETFUNCTION - Online Linux Manual PageSection : 3
Updated : November 26, 2021
Source : libcurl 7.82.0
Note : curl_easy_setopt options
NAMECURLOPT_CLOSESOCKETFUNCTION − callback to socket close replacement
SYNOPSIS#include <curl/curl.h> int closesocket_callback(void *clientp, curl_socket_t item); CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CLOSESOCKETFUNCTION, closesocket_callback);
DESCRIPTIONPass a pointer to your callback function, which should match the prototype shown above. This callback function gets called by libcurl instead of the close(3) or closesocket(3) call when sockets are closed (not for any other file descriptors). This is pretty much the reverse to the CURLOPT_OPENSOCKETFUNCTION(3) option. Return 0 to signal success and 1 if there was an error. The clientp pointer is set with CURLOPT_CLOSESOCKETDATA(3). item is the socket libcurl wants to be closed.
DEFAULTBy default libcurl uses the standard socket close function.
PROTOCOLSAll
EXAMPLEstatic int closesocket(void *clientp, curl_socket_t item) { printf("libcurl wants to close %d now\n", (int)item); return 0; } /* call this function to close sockets */ curl_easy_setopt(curl, CURLOPT_CLOSESOCKETFUNCTION, closesocket); curl_easy_setopt(curl, CURLOPT_CLOSESOCKETDATA, &sockfd);
AVAILABILITYAdded in 7.21.7
RETURN VALUEReturns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
SEE ALSOCURLOPT_CLOSESOCKETDATA(3), CURLOPT_OPENSOCKETFUNCTION (3)," 0
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ERROR : Need New Coding :         (rof_nr_x|149|CURLOPT_CLOSESOCKETFUNCTION.3|57|\n", (int)item);| printf("libcurl wants to close %d now\\n", (int)item); )