1--- 2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3SPDX-License-Identifier: curl 4Title: CURLINFO_PROTOCOL 5Section: 3 6Source: libcurl 7See-also: 8 - CURLINFO_RESPONSE_CODE (3) 9 - curl_easy_getinfo (3) 10 - curl_easy_setopt (3) 11Protocol: 12 - All 13Added-in: 7.52.0 14--- 15 16# NAME 17 18CURLINFO_PROTOCOL - get the protocol used in the connection 19 20# SYNOPSIS 21 22~~~c 23#include <curl/curl.h> 24 25CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_PROTOCOL, long *p); 26~~~ 27 28# DESCRIPTION 29 30This option is deprecated. We strongly recommend using 31CURLINFO_SCHEME(3) instead, because this option cannot return all 32possible protocols. 33 34Pass a pointer to a long to receive the version used in the last http 35connection. The returned value is set to one of the CURLPROTO_* values: 36 37~~~c 38CURLPROTO_DICT, CURLPROTO_FILE, CURLPROTO_FTP, CURLPROTO_FTPS, 39CURLPROTO_GOPHER, CURLPROTO_HTTP, CURLPROTO_HTTPS, CURLPROTO_IMAP, 40CURLPROTO_IMAPS, CURLPROTO_LDAP, CURLPROTO_LDAPS, CURLPROTO_POP3, 41CURLPROTO_POP3S, CURLPROTO_RTMP, CURLPROTO_RTMPE, CURLPROTO_RTMPS, 42CURLPROTO_RTMPT, CURLPROTO_RTMPTE, CURLPROTO_RTMPTS, CURLPROTO_RTSP, 43CURLPROTO_SCP, CURLPROTO_SFTP, CURLPROTO_SMB, CURLPROTO_SMBS, CURLPROTO_SMTP, 44CURLPROTO_SMTPS, CURLPROTO_TELNET, CURLPROTO_TFTP, CURLPROTO_MQTT 45~~~ 46 47# %PROTOCOLS% 48 49# EXAMPLE 50 51~~~c 52int main(void) 53{ 54 CURL *curl = curl_easy_init(); 55 if(curl) { 56 CURLcode res; 57 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); 58 res = curl_easy_perform(curl); 59 if(res == CURLE_OK) { 60 long protocol; 61 curl_easy_getinfo(curl, CURLINFO_PROTOCOL, &protocol); 62 } 63 curl_easy_cleanup(curl); 64 } 65} 66~~~ 67 68# DEPRECATED 69 70Deprecated since 7.85.0. 71 72# %AVAILABILITY% 73 74# RETURN VALUE 75 76Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. 77
