| CURLOPT_LOCALPORT(3) | curl_easy_setopt options | CURLOPT_LOCALPORT(3) |
CURLOPT_LOCALPORT - set local port number to use for socket
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_LOCALPORT, long port);
Pass a long. This sets the local port number of the socket used for the connection. This can be used in combination with CURLOPT_INTERFACE(3) and you are recommended to use CURLOPT_LOCALPORTRANGE(3) as well when this option is set. Valid port numbers are 1 - 65535.
0, disabled - use whatever the system thinks is fine
All
CURL *curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/foo.bin");
curl_easy_setopt(curl, CURLOPT_LOCALPORT, 49152L);
/* and try 20 more ports following that */
curl_easy_setopt(curl, CURLOPT_LOCALPORTRANGE, 20L);
ret = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
Added in 7.15.2
Returns CURLE_OK
| January 31, 2019 | libcurl 7.64.0 |