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authorAdrian Peniak <adrian@peniak.com>2018-06-28 06:56:16 +0100
committerDaniel Stenberg <daniel@haxx.se>2018-06-28 09:43:23 +0200
commit24cb114c53bd60495920c1aa3455290ea4b624dd (patch)
tree4da1feaebfac87c7462c805ccd7cdf1cc20c1378
parenteebd3bb68a953b532f30189425b69a57362044b8 (diff)
CURLINFO_TLS_SSL_PTR.3: improve the example
The previous example was a little bit confusing, because SSL* structure (or other "in use" SSL connection pointer) is not accessible after the transfer is completed, therefore working with the raw TLS library specific pointer needs to be done during transfer. Closes #2690
-rw-r--r--docs/libcurl/opts/CURLINFO_TLS_SSL_PTR.335
1 files changed, 27 insertions, 8 deletions
diff --git a/docs/libcurl/opts/CURLINFO_TLS_SSL_PTR.3 b/docs/libcurl/opts/CURLINFO_TLS_SSL_PTR.3
index 59ddd599c..c601e4fcf 100644
--- a/docs/libcurl/opts/CURLINFO_TLS_SSL_PTR.3
+++ b/docs/libcurl/opts/CURLINFO_TLS_SSL_PTR.3
@@ -5,7 +5,7 @@
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
@@ -129,14 +129,33 @@ https://github.com/curl/curl/issues/685
All TLS-based
.SH EXAMPLE
.nf
-CURL *curl = curl_easy_init();
-if(curl) {
+#include <curl/curl.h>
+#include <openssl/ssl.h>
+
+CURL *curl;
+static size_t wf(void *ptr, size_t size, size_t nmemb, void *stream)
+{
+ const struct curl_tlssessioninfo *info = NULL;
+ CURLcode res = curl_easy_getinfo(curl, CURLINFO_TLS_SSL_PTR, &info);
+ if(info && !res) {
+ if(CURLSSLBACKEND_OPENSSL == info->backend) {
+ printf("OpenSSL ver. %s\\n", SSL_get_version((SSL*)info->internals));
+ }
+ }
+ return size * nmemb;
+}
+
+int main(int argc, char** argv)
+{
CURLcode res;
- struct curl_tlssessioninfo *tls;
- curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
- res = curl_easy_perform(curl);
- curl_easy_getinfo(curl, CURLINFO_TLS_SSL_PTR, &tls);
- curl_easy_cleanup(curl);
+ curl = curl_easy_init();
+ if(curl) {
+ curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
+ curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, wf);
+ res = curl_easy_perform(curl);
+ curl_easy_cleanup(curl);
+ }
+ return res;
}
.fi
.SH AVAILABILITY