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-rw-r--r--docs/examples/Makefile.inc3
-rw-r--r--docs/examples/altsvc.c56
-rw-r--r--docs/examples/http3-present.c47
-rw-r--r--docs/examples/http3.c54
4 files changed, 159 insertions, 1 deletions
diff --git a/docs/examples/Makefile.inc b/docs/examples/Makefile.inc
index d0cce337c..6fd8ecd76 100644
--- a/docs/examples/Makefile.inc
+++ b/docs/examples/Makefile.inc
@@ -35,7 +35,8 @@ check_PROGRAMS = 10-at-a-time anyauthput cookie_interface debug fileupload \
http2-upload http2-serverpush getredirect ftpuploadfrommem \
ftpuploadresume sslbackend postit2-formadd multi-formadd \
shared-connection-cache sftpuploadresume http2-pushinmemory parseurl \
- urlapi imap-authzid pop3-authzid smtp-authzid
+ urlapi imap-authzid pop3-authzid smtp-authzid http3 altsvc \
+ http3-present
# These examples require external dependencies that may not be commonly
# available on POSIX systems, so don't bother attempting to compile them here.
diff --git a/docs/examples/altsvc.c b/docs/examples/altsvc.c
new file mode 100644
index 000000000..24ef42585
--- /dev/null
+++ b/docs/examples/altsvc.c
@@ -0,0 +1,56 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2019, 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
+ * are also available at https://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+/* <DESC>
+ * HTTP with Alt-Svc support
+ * </DESC>
+ */
+#include <stdio.h>
+#include <curl/curl.h>
+
+int main(void)
+{
+ CURL *curl;
+ CURLcode res;
+
+ curl = curl_easy_init();
+ if(curl) {
+ curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
+
+ /* cache the alternatives in this file */
+ curl_easy_setopt(curl, CURLOPT_ALTSVC, "altsvc.txt");
+
+ /* restrict which HTTP versions to use alternatives */
+ curl_easy_setopt(curl, CURLOPT_ALTSVC_CTRL, (long)
+ CURLALTSVC_H1|CURLALTSVC_H2|CURLALTSVC_H3);
+
+ /* Perform the request, res will get the return code */
+ res = curl_easy_perform(curl);
+ /* Check for errors */
+ if(res != CURLE_OK)
+ fprintf(stderr, "curl_easy_perform() failed: %s\n",
+ curl_easy_strerror(res));
+
+ /* always cleanup */
+ curl_easy_cleanup(curl);
+ }
+ return 0;
+}
diff --git a/docs/examples/http3-present.c b/docs/examples/http3-present.c
new file mode 100644
index 000000000..857952dc7
--- /dev/null
+++ b/docs/examples/http3-present.c
@@ -0,0 +1,47 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2019, 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
+ * are also available at https://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+/* <DESC>
+ * Checks if HTTP/3 support is present in libcurl.
+ * </DESC>
+ */
+#include <stdio.h>
+#include <curl/curl.h>
+
+int main(void)
+{
+ curl_version_info_data *ver;
+
+ curl_global_init(CURL_GLOBAL_ALL);
+
+ ver = curl_version_info(CURLVERSION_NOW);
+ if(ver->features & CURL_VERSION_HTTP2)
+ printf("HTTP/2 support is present\n");
+
+ if(ver->features & CURL_VERSION_HTTP3)
+ printf("HTTP/3 support is present\n");
+
+ if(ver->features & CURL_VERSION_ALTSVC)
+ printf("Alt-svc support is present\n");
+
+ curl_global_cleanup();
+ return 0;
+}
diff --git a/docs/examples/http3.c b/docs/examples/http3.c
new file mode 100644
index 000000000..240a7edd4
--- /dev/null
+++ b/docs/examples/http3.c
@@ -0,0 +1,54 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2019, 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
+ * are also available at https://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+/* <DESC>
+ * Very simple HTTP/3 GET
+ * </DESC>
+ */
+#include <stdio.h>
+#include <curl/curl.h>
+
+int main(void)
+{
+ CURL *curl;
+ CURLcode res;
+
+ curl = curl_easy_init();
+ if(curl) {
+ curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
+
+ /* Forcing HTTP/3 will make the connection fail if the server isn't
+ accessible over QUIC + HTTP/3 on the given host and port.
+ Consider using CURLOPT_ALTSVC instead! */
+ curl_easy_setopt(curl, CURLOPT_HTTP_VERSION, (long)CURL_HTTP_VERSION_3);
+
+ /* Perform the request, res will get the return code */
+ res = curl_easy_perform(curl);
+ /* Check for errors */
+ if(res != CURLE_OK)
+ fprintf(stderr, "curl_easy_perform() failed: %s\n",
+ curl_easy_strerror(res));
+
+ /* always cleanup */
+ curl_easy_cleanup(curl);
+ }
+ return 0;
+}