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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
77 lines
1.5 KiB
Markdown
77 lines
1.5 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_LOCAL_PORT
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Section: 3
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Source: libcurl
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Protocol:
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- TCP
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- QUIC
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See-also:
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- CURLINFO_LOCAL_IP (3)
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- CURLINFO_PRIMARY_PORT (3)
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- curl_easy_getinfo (3)
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- curl_easy_setopt (3)
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Added-in: 7.21.0
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---
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# NAME
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CURLINFO_LOCAL_PORT - latest local 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_LOCAL_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 local port number of the most recent
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connection done with this **curl** handle.
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If the connection was done using QUIC, the port number is a UDP port number,
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otherwise it is a TCP 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;
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CURLcode res;
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curl = curl_easy_init();
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if(curl) {
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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(CURLE_OK == res) {
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long port;
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res = curl_easy_getinfo(curl, CURLINFO_LOCAL_PORT, &port);
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if(CURLE_OK == res) {
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printf("We used local port: %ld\n", port);
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}
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}
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curl_easy_cleanup(curl);
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}
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return 0;
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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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