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curldown is this new file format for libcurl man pages. It is markdown inspired with differences: - Each file has a set of leading headers with meta-data - Supports a small subset of markdown - Uses .md file extensions for editors/IDE/GitHub to treat them nicely - Generates man pages very similar to the previous ones - Generates man pages that still convert nicely to HTML on the website - Detects and highlights mentions of curl symbols automatically (when their man page section is specified) tools: - cd2nroff: converts from curldown to nroff man page - nroff2cd: convert an (old) nroff man page to curldown - cdall: convert many nroff pages to curldown versions - cd2cd: verifies and updates a curldown to latest curldown This setup generates .3 versions of all the curldown versions at build time. CI: Since the documentation is now technically markdown in the eyes of many things, the CI runs many more tests and checks on this documentation, including proselint, link checkers and tests that make sure we capitalize the first letter after a period... Closes #12730
78 lines
1.8 KiB
Markdown
78 lines
1.8 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLINFO_LASTSOCKET
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Section: 3
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Source: libcurl
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See-also:
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- CURLINFO_ACTIVESOCKET (3)
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- CURLOPT_CONNECT_ONLY (3)
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- curl_easy_getinfo (3)
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- curl_easy_setopt (3)
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---
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# NAME
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CURLINFO_LASTSOCKET - get the last socket used
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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_LASTSOCKET, long *socket);
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~~~
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# DESCRIPTION
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Deprecated since 7.45.0. Use CURLINFO_ACTIVESOCKET(3) instead.
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Pass a pointer to a long to receive the last socket used by this curl
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session. If the socket is no longer valid, -1 is returned. When you finish
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working with the socket, you must call curl_easy_cleanup(3) as usual and
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let libcurl close the socket and cleanup other resources associated with the
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handle. This is typically used in combination with
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CURLOPT_CONNECT_ONLY(3).
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NOTE: this API is deprecated since it is not working on win64 where the SOCKET
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type is 64 bits large while its 'long' is 32 bits. Use the
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CURLINFO_ACTIVESOCKET(3) instead, if possible.
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# PROTOCOLS
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All
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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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long sockfd; /* does not work on win64! */
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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/* Do not do the transfer - only connect to host */
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curl_easy_setopt(curl, CURLOPT_CONNECT_ONLY, 1L);
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res = curl_easy_perform(curl);
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/* Extract the socket from the curl handle */
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res = curl_easy_getinfo(curl, CURLINFO_LASTSOCKET, &sockfd);
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if(res != CURLE_OK) {
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printf("Error: %s\n", curl_easy_strerror(res));
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return 1;
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}
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}
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}
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~~~
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# AVAILABILITY
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Added in 7.15.2
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# RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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