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e3fe020089
Remove the PROTOCOLS section from the source files completely and instead generate them based on the header data in the curldown files. It also generates TLS backend information for options marked for TLS as protocol. Closes #13175
75 lines
1.8 KiB
Markdown
75 lines
1.8 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_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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Protocol:
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- All
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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 If the socket is no longer valid, -1 is returned.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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# 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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