52 lines
1.5 KiB
Groff
52 lines
1.5 KiB
Groff
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.\" generated by cd2nroff 0.1 from CURLINFO_PRIMARY_PORT.md
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.TH CURLINFO_PRIMARY_PORT 3 "2025-07-07" libcurl
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.SH NAME
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CURLINFO_PRIMARY_PORT \- get the latest destination port number
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_PRIMARY_PORT, long *portp);
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.fi
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.SH DESCRIPTION
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Pass a pointer to a long to receive the destination port of the most recent
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connection done with this \fBcurl\fP handle.
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This is the destination port of the actual TCP or UDP connection libcurl used.
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If a proxy was used for the most recent transfer, this is the port number of
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the proxy, if no proxy was used it is the port number of the most recently
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accessed URL.
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.SH PROTOCOLS
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This functionality affects all supported protocols
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.SH EXAMPLE
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.nf
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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res = curl_easy_perform(curl);
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if(res == CURLE_OK) {
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long port;
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res = curl_easy_getinfo(curl, CURLINFO_PRIMARY_PORT, &port);
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if(!res)
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printf("Connected to remote port: %ld\\n", port);
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}
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curl_easy_cleanup(curl);
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}
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}
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.fi
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.SH AVAILABILITY
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Added in curl 7.21.0
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.SH RETURN VALUE
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\fIcurl_easy_getinfo(3)\fP returns a CURLcode indicating success or error.
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CURLE_OK (0) means everything was OK, non\-zero means an error occurred, see
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\fIlibcurl\-errors(3)\fP.
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.SH SEE ALSO
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.BR CURLINFO_LOCAL_PORT (3),
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.BR CURLINFO_PRIMARY_IP (3),
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.BR curl_easy_getinfo (3),
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.BR curl_easy_setopt (3)
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