CURLOPT_LOCALPORT (3) Linux Manual Page
CURLOPT_LOCALPORT – set local port number to use for socket
Synopsis
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_LOCALPORT, long port);
Description
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.
Default
0, disabled – use whatever the system thinks is fine
Protocols
All
Example
TODO
Availability
Added in 7.15.2
Return Value
Returns CURLE_OK
