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| .TH CURLOPT_LOCALPORT 3 "September 08, 2021" "libcurl 7.80.0" "curl_easy_setopt options" |
| |
| .SH NAME |
| CURLOPT_LOCALPORT \- local port number to use for socket |
| .SH SYNOPSIS |
| #include <curl/curl.h> |
| |
| CURLcode curl_easy_setopt(CURL *handle, CURLOPT_LOCALPORT, long port); |
| .SH DESCRIPTION |
| Pass a long. This sets the local port number of the socket used for the |
| connection. This can be used in combination with \fICURLOPT_INTERFACE(3)\fP |
| and you are recommended to use \fICURLOPT_LOCALPORTRANGE(3)\fP as well when |
| this option is set. Valid port numbers are 1 - 65535. |
| .SH DEFAULT |
| 0, disabled - use whatever the system thinks is fine |
| .SH PROTOCOLS |
| All |
| .SH EXAMPLE |
| .nf |
| CURL *curl = curl_easy_init(); |
| if(curl) { |
| curl_easy_setopt(curl, CURLOPT_URL, "https://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); |
| } |
| .fi |
| .SH AVAILABILITY |
| Added in 7.15.2 |
| .SH RETURN VALUE |
| Returns CURLE_OK |
| .SH "SEE ALSO" |
| .BR CURLOPT_LOCALPORTRANGE "(3), " CURLOPT_INTERFACE "(3), " |
