CURLOPT_LOCALPORTRANGE - number of additional local ports to try
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_LOCALPORTRANGE, long range);
CURLOPT_LOCALPORTRANGE(3) curl_easy_setopt options CURLOPT_LOCALPORTRANGE(3) NAME CURLOPT_LOCALPORTRANGE - number of additional local ports to try SYNOPSIS #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_LOCALPORTRANGE, long range); DESCRIPTION Pass a long. The range argument is the number of attempts libcurl will make to find a working local port number. It starts with the given CUR- LOPT_LOCALPORT(3) and adds one to the number for each retry. Setting this option to 1 or below will make libcurl do only one try for the exact port number. Port numbers by nature are scarce resources that will be busy at times so setting this value to something too low might cause unnecessary connection setup failures. DEFAULT 1 PROTOCOLS All EXAMPLE 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); } AVAILABILITY Added in 7.15.2 RETURN VALUE Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+------------------+ |Availability | web/curl | +---------------+------------------+ |Stability | Uncommitted | +---------------+------------------+ SEE ALSO CURLOPT_LOCALPORT(3), CURLOPT_INTERFACE(3), NOTES Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source- code-downloads.html. This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from https://curl.se/down- load/curl-7.83.1.tar.bz2. Further information about this software can be found on the open source community website at http://curl.haxx.se/. libcurl 7.83.1 November 26, 2021 CURLOPT_LOCALPORTRANGE(3)