From f3c34bf83c0bc60a97b76eba4f2b8f3d75310104 Mon Sep 17 00:00:00 2001 From: Daniel Stenberg Date: Tue, 13 Aug 2019 11:24:50 +0200 Subject: examples: add http3.c, altsvc.c and http3-present.c Closes #4221 --- docs/examples/Makefile.inc | 3 ++- docs/examples/altsvc.c | 56 +++++++++++++++++++++++++++++++++++++++++++ docs/examples/http3-present.c | 47 ++++++++++++++++++++++++++++++++++++ docs/examples/http3.c | 54 +++++++++++++++++++++++++++++++++++++++++ 4 files changed, 159 insertions(+), 1 deletion(-) create mode 100644 docs/examples/altsvc.c create mode 100644 docs/examples/http3-present.c create mode 100644 docs/examples/http3.c (limited to 'docs/examples') 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, , 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. + * + ***************************************************************************/ +/* + * HTTP with Alt-Svc support + * + */ +#include +#include + +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, , 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. + * + ***************************************************************************/ +/* + * Checks if HTTP/3 support is present in libcurl. + * + */ +#include +#include + +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, , 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. + * + ***************************************************************************/ +/* + * Very simple HTTP/3 GET + * + */ +#include +#include + +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; +} -- cgit v1.2.3