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c4f29cc508
Make `port` member in these struct of type `uint16_t`. add `uint8_t transport` to `struct ip_quadruple Define TRNSPRT_NONE as 0. By assigning a valid transport only on a successful connection, it is clear when the ip_quadruple members are valid. Also, for transports not involving ports, the getinfos for `CURLINFO_PRIMARY_PORT` and `CURLINFO_LOCAL_PORT` will now always return -1. Make all `transport` members and parameters of type `uint8_t`. Document the return value of `CURLINFO_LOCAL_PORT` and `CURLINFO_PRIMARY_PORT` in this regard. Add tests that writeout stats report ports correctly. Closes #19708
74 lines
1.6 KiB
Markdown
74 lines
1.6 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLINFO_PRIMARY_PORT
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Section: 3
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Source: libcurl
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See-also:
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- CURLINFO_LOCAL_PORT (3)
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- CURLINFO_PRIMARY_IP (3)
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- curl_easy_getinfo (3)
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- curl_easy_setopt (3)
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Protocol:
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- All
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Added-in: 7.21.0
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---
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# NAME
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CURLINFO_PRIMARY_PORT - last destination port number
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# SYNOPSIS
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~~~c
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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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~~~
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# 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 **curl** 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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If the connection was done using QUIC, the port number is a UDP port number.
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If no connection was established or if the protocol does not use ports, -1
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is returned.
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# %PROTOCOLS%
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# EXAMPLE
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~~~c
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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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~~~
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# %AVAILABILITY%
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# RETURN VALUE
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curl_easy_getinfo(3) 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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libcurl-errors(3).
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