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23 .TH CURLOPT_LOCALPORT 3 "May 31, 2017" "libcurl 7.59.0" "curl_easy_setopt options"
26 CURLOPT_LOCALPORT \- set local port number to use for socket
28 #include <curl/curl.h>
30 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_LOCALPORT, long port);
32 Pass a long. This sets the local port number of the socket used for the
33 connection. This can be used in combination with \fICURLOPT_INTERFACE(3)\fP
34 and you are recommended to use \fICURLOPT_LOCALPORTRANGE(3)\fP as well when
35 this option is set. Valid port numbers are 1 - 65535.
37 0, disabled - use whatever the system thinks is fine
42 CURL *curl = curl_easy_init();
44 curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/foo.bin");
45 curl_easy_setopt(curl, CURLOPT_LOCALPORT, 8080L);
46 /* and try 20 more ports following that */
47 curl_easy_setopt(curl, CURLOPT_LOCALPORTRANGE, 20L);
48 ret = curl_easy_perform(curl);
49 curl_easy_cleanup(curl);
57 .BR CURLOPT_LOCALPORTRANGE "(3), " CURLOPT_INTERFACE "(3), "