curl/docs/examples
Davidson Francis e8d0cd0e95 examples/websocket.c: check for CURLE_AGAIN on recv_pong()
The example file docs/examples/websocket.c does not work out of the
box, because the recv_pong() function does not consider that the
curl_ws_recv() function might return CURLE_AGAIN if there is no data
to read, causing the program to terminate prematurely.

This commit addresses this by using select(2) to make receiving pong
blocking, and thus being able to continue with the main loop.

This also occurs in the example file sendrecv.c, which also makes use
of select(2) for sending and receiving data, which I based on for
this commit.
2024-06-03 11:36:49 -03:00
..
.checksrc checksrc: ban gmtime/localtime 2020-07-28 23:51:17 +02:00
.gitignore copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
10-at-a-time.c build: fix -Wconversion/-Wsign-conversion warnings 2023-12-20 15:38:45 +00:00
adddocsref.pl copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
address-scope.c examples/address-scope.c: renamed from ipv6.c 2024-01-10 09:32:54 +01:00
altsvc.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
anyauthput.c build: fix -Wconversion/-Wsign-conversion warnings 2023-12-20 15:38:45 +00:00
cacertinmem.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
certinfo.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
chkspeed.c build: enable missing OpenSSF-recommended warnings, with fixes 2023-12-16 13:12:37 +00:00
connect-to.c misc: fix various typos 2023-08-01 14:09:32 +02:00
cookie_interface.c windows: use built-in _WIN32 macro to detect Windows 2023-11-22 15:42:25 +00:00
crawler.c example/crawler: make it use a few more options 2023-06-19 09:06:41 +02:00
debug.c build: enable missing OpenSSF-recommended warnings, with fixes 2023-12-16 13:12:37 +00:00
default-scheme.c example/default-scheme: set the default scheme for schemeless URLs 2023-06-18 23:37:48 +02:00
ephiperfifo.c docs: remove use of the word 'very' 2023-09-07 22:52:07 +02:00
evhiperfifo.c docs: remove use of the word 'very' 2023-09-07 22:52:07 +02:00
externalsocket.c windows: delete redundant headers 2023-12-18 14:56:57 +00:00
fileupload.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
ftp-wildcard.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
ftpget.c build: fix -Wconversion/-Wsign-conversion warnings 2023-12-20 15:38:45 +00:00
ftpgetinfo.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
ftpgetresp.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
ftpsget.c build: fix -Wconversion/-Wsign-conversion warnings 2023-12-20 15:38:45 +00:00
ftpupload.c windows: use built-in _WIN32 macro to detect Windows 2023-11-22 15:42:25 +00:00
ftpuploadfrommem.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
ftpuploadresume.c examples/ftpuploadresume.c: add use of CURLOPT_ACCEPTTIMEOUT_MS 2023-06-08 23:37:43 +02:00
getinfo.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
getinmemory.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
getredirect.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
getreferrer.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
ghiper.c docs: remove use of the word 'very' 2023-09-07 22:52:07 +02:00
headerapi.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
hiperfifo.c docs: remove use of the word 'very' 2023-09-07 22:52:07 +02:00
href_extractor.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
hsts-preload.c example/hsts-preload: show one way to HSTS preload 2023-06-18 23:35:40 +02:00
htmltidy.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
htmltitle.cpp misc: fix spelling mistakes 2023-05-23 10:42:09 +02:00
http-options.c examples/http-options: show how to send "OPTIONS *" 2023-06-18 11:10:23 +02:00
http-post.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
http2-download.c build: fix -Wconversion/-Wsign-conversion warnings 2023-12-20 15:38:45 +00:00
http2-pushinmemory.c docs: rewrite to present tense 2023-08-23 23:26:10 +02:00
http2-serverpush.c build: enable missing OpenSSF-recommended warnings, with fixes 2023-12-16 13:12:37 +00:00
http2-upload.c build: enable missing OpenSSF-recommended warnings, with fixes 2023-12-16 13:12:37 +00:00
http3-present.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
http3.c examples/http3.c: use CURL_HTTP_VERSION_3 2023-02-27 15:11:13 +01:00
httpcustomheader.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
httpput-postfields.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
httpput.c misc: fix spelling mistakes 2023-05-23 10:42:09 +02:00
https.c examples/https.c: use CURLOPT_CA_CACHE_TIMEOUT 2023-06-11 00:17:41 +02:00
imap-append.c docs: use a space after RFC when spelling out RFC numbers 2023-07-09 19:13:33 +02:00
imap-authzid.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
imap-copy.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
imap-create.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
imap-delete.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
imap-examine.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
imap-fetch.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
imap-list.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
imap-lsub.c docs: remove use of the word 'very' 2023-09-07 22:52:07 +02:00
imap-multi.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
imap-noop.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
imap-search.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
imap-ssl.c docs: remove use of the word 'very' 2023-09-07 22:52:07 +02:00
imap-store.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
imap-tls.c docs: remove use of the word 'very' 2023-09-07 22:52:07 +02:00
interface.c docs/examples/interface.c: show CURLOPT_INTERFACE use 2023-10-30 12:45:34 +01:00
ipv6.c examples/ipv6.c: new example showing IPv6-only internet transfer 2024-01-10 09:33:03 +01:00
keepalive.c docs/example/keepalive.c: show TCP keep-alive options 2023-11-01 10:57:15 +01:00
localport.c docs/example/localport.c: show off CURLOPT_LOCALPORT 2023-10-30 12:49:00 +01:00
Makefile.am copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
Makefile.example docs: rewrite to present tense 2023-08-23 23:26:10 +02:00
Makefile.inc examples/range.c: add 2024-01-10 09:33:08 +01:00
Makefile.mk Makefile.mk: drop Windows support 2023-12-16 13:12:22 +00:00
maxconnects.c example/maxconnects: set maxconnect example 2023-07-11 20:13:25 +02:00
multi-app.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
multi-debugcallback.c build: enable missing OpenSSF-recommended warnings, with fixes 2023-12-16 13:12:37 +00:00
multi-double.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
multi-event.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
multi-formadd.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
multi-legacy.c lib: fix conversion warnings with gcc on macOS 2023-05-21 14:02:31 +02:00
multi-post.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
multi-single.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
multi-uv.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
multithread.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
netrc.c examples/netrc.c: add 2024-01-10 09:33:06 +01:00
parseurl.c checksrc: disallow spaces before labels 2023-05-18 20:45:04 +02:00
persistent.c docs: rewrite to present tense 2023-08-23 23:26:10 +02:00
pop3-authzid.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
pop3-dele.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
pop3-list.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
pop3-multi.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
pop3-noop.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
pop3-retr.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
pop3-ssl.c docs: remove use of the word 'very' 2023-09-07 22:52:07 +02:00
pop3-stat.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
pop3-tls.c docs: remove use of the word 'very' 2023-09-07 22:52:07 +02:00
pop3-top.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
pop3-uidl.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
post-callback.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
postinmemory.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
postit2-formadd.c docs: use a space after RFC when spelling out RFC numbers 2023-07-09 19:13:33 +02:00
postit2.c docs: use a space after RFC when spelling out RFC numbers 2023-07-09 19:13:33 +02:00
progressfunc.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
protofeats.c docs/examples/protofeats.c: Outputs all protocols and features 2023-04-18 08:10:27 +02:00
range.c examples/range.c: add 2024-01-10 09:33:08 +01:00
README.md copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
resolve.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
rtsp-options.c examples/rtsp-options.c: add 2023-12-04 22:35:38 +01:00
sendrecv.c examples/sendrecv: fix comment line length 2023-12-26 03:28:46 -05:00
sepheaders.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
sessioninfo.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
sftpget.c build: fix -Wconversion/-Wsign-conversion warnings 2023-12-20 15:38:45 +00:00
sftpuploadresume.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
shared-connection-cache.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
simple.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
simplepost.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
simplessl.c spelling: fix codespell 2.2.6 typos 2023-10-03 21:37:56 +00:00
smooth-gtk-thread.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
smtp-authzid.c docs: remove use of the word 'very' 2023-09-07 22:52:07 +02:00
smtp-expn.c docs: remove use of the word 'very' 2023-09-07 22:52:07 +02:00
smtp-mail.c docs: remove use of the word 'very' 2023-09-07 22:52:07 +02:00
smtp-mime.c docs: remove use of the word 'very' 2023-09-07 22:52:07 +02:00
smtp-multi.c docs: use a space after RFC when spelling out RFC numbers 2023-07-09 19:13:33 +02:00
smtp-ssl.c docs: remove use of the word 'very' 2023-09-07 22:52:07 +02:00
smtp-tls.c docs: remove use of the word 'very' 2023-09-07 22:52:07 +02:00
smtp-vrfy.c docs: remove use of the word 'very' 2023-09-07 22:52:07 +02:00
sslbackend.c docs: use CURLSSLBACKEND_NONE 2023-09-21 14:15:03 +02:00
synctime.c windows: delete redundant headers 2023-12-18 14:56:57 +00:00
threaded-ssl.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
unixsocket.c examples/unixsocket.c: example using CURLOPT_UNIX_SOCKET_PATH 2023-06-08 23:36:55 +02:00
url2file.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
urlapi.c examples: make use of CURLOPT_(REDIR_|)PROTOCOLS_STR 2023-06-18 11:09:13 +02:00
usercertinmem.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
version-check.pl copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
websocket-cb.c ws: make the curl_ws_meta() return pointer a const 2023-06-07 23:37:21 +02:00
websocket.c examples/websocket.c: check for CURLE_AGAIN on recv_pong() 2024-06-03 11:36:49 -03:00
xmlstream.c copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00

libcurl examples

This directory is for libcurl programming examples. They are meant to show some simple steps on how you can build your own application to take full advantage of libcurl.

If you end up with other small but still useful example sources, please mail them for submission in future packages and on the website.

Building

The Makefile.example is an example Makefile that could be used to build these examples. Just edit the file according to your system and requirements first.

Most examples should build fine using a command line like this:

`curl-config --cc --cflags --libs` -o example example.c

Some compilers do not like having the arguments in this order but instead want you do reorganize them like:

`curl-config --cc` -o example example.c `curl-config --cflags --libs`

Please do not use the curl.se site as a test target for your libcurl applications/experiments. Even if some of the examples use that site as a URL at some places, it does not mean that the URLs work or that we expect you to actually torture our website with your tests. Thanks.

Examples

Each example source code file is designed to be and work stand-alone and rather self-explanatory. The examples may at times lack the level of error checks you need in a real world, but that is then only for the sake of readability: to make the code smaller and easier to follow.