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-rw-r--r--docs/examples/Makefile.inc2
-rw-r--r--docs/examples/multi-formadd.c171
-rw-r--r--docs/examples/postit2-formadd.c107
3 files changed, 279 insertions, 1 deletions
diff --git a/docs/examples/Makefile.inc b/docs/examples/Makefile.inc
index f21633d6d..71b804c75 100644
--- a/docs/examples/Makefile.inc
+++ b/docs/examples/Makefile.inc
@@ -33,7 +33,7 @@ check_PROGRAMS = 10-at-a-time anyauthput cookie_interface debug fileupload \
imap-search imap-create imap-delete imap-copy imap-noop imap-ssl \
imap-tls imap-multi url2file sftpget ftpsget postinmemory http2-download \
http2-upload http2-serverpush getredirect ftpuploadfrommem \
- ftpuploadresume sslbackend
+ ftpuploadresume sslbackend postit2-formadd multi-formadd
# 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/multi-formadd.c b/docs/examples/multi-formadd.c
new file mode 100644
index 000000000..bd85cc641
--- /dev/null
+++ b/docs/examples/multi-formadd.c
@@ -0,0 +1,171 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2017, 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>
+ * using the multi interface to do a multipart formpost without blocking
+ * </DESC>
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/time.h>
+
+#include <curl/curl.h>
+
+int main(void)
+{
+ CURL *curl;
+
+ CURLM *multi_handle;
+ int still_running;
+
+ struct curl_httppost *formpost = NULL;
+ struct curl_httppost *lastptr = NULL;
+ struct curl_slist *headerlist = NULL;
+ static const char buf[] = "Expect:";
+
+ /* Fill in the file upload field. This makes libcurl load data from
+ the given file name when curl_easy_perform() is called. */
+ curl_formadd(&formpost,
+ &lastptr,
+ CURLFORM_COPYNAME, "sendfile",
+ CURLFORM_FILE, "postit2.c",
+ CURLFORM_END);
+
+ /* Fill in the filename field */
+ curl_formadd(&formpost,
+ &lastptr,
+ CURLFORM_COPYNAME, "filename",
+ CURLFORM_COPYCONTENTS, "postit2.c",
+ CURLFORM_END);
+
+ /* Fill in the submit field too, even if this is rarely needed */
+ curl_formadd(&formpost,
+ &lastptr,
+ CURLFORM_COPYNAME, "submit",
+ CURLFORM_COPYCONTENTS, "send",
+ CURLFORM_END);
+
+ curl = curl_easy_init();
+ multi_handle = curl_multi_init();
+
+ /* initialize custom header list (stating that Expect: 100-continue is not
+ wanted */
+ headerlist = curl_slist_append(headerlist, buf);
+ if(curl && multi_handle) {
+
+ /* what URL that receives this POST */
+ curl_easy_setopt(curl, CURLOPT_URL, "http://www.example.com/upload.cgi");
+ curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
+
+ curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
+ curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
+
+ curl_multi_add_handle(multi_handle, curl);
+
+ curl_multi_perform(multi_handle, &still_running);
+
+ do {
+ struct timeval timeout;
+ int rc; /* select() return code */
+ CURLMcode mc; /* curl_multi_fdset() return code */
+
+ fd_set fdread;
+ fd_set fdwrite;
+ fd_set fdexcep;
+ int maxfd = -1;
+
+ long curl_timeo = -1;
+
+ FD_ZERO(&fdread);
+ FD_ZERO(&fdwrite);
+ FD_ZERO(&fdexcep);
+
+ /* set a suitable timeout to play around with */
+ timeout.tv_sec = 1;
+ timeout.tv_usec = 0;
+
+ curl_multi_timeout(multi_handle, &curl_timeo);
+ if(curl_timeo >= 0) {
+ timeout.tv_sec = curl_timeo / 1000;
+ if(timeout.tv_sec > 1)
+ timeout.tv_sec = 1;
+ else
+ timeout.tv_usec = (curl_timeo % 1000) * 1000;
+ }
+
+ /* get file descriptors from the transfers */
+ mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
+
+ if(mc != CURLM_OK) {
+ fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
+ break;
+ }
+
+ /* On success the value of maxfd is guaranteed to be >= -1. We call
+ select(maxfd + 1, ...); specially in case of (maxfd == -1) there are
+ no fds ready yet so we call select(0, ...) --or Sleep() on Windows--
+ to sleep 100ms, which is the minimum suggested value in the
+ curl_multi_fdset() doc. */
+
+ if(maxfd == -1) {
+#ifdef _WIN32
+ Sleep(100);
+ rc = 0;
+#else
+ /* Portable sleep for platforms other than Windows. */
+ struct timeval wait = { 0, 100 * 1000 }; /* 100ms */
+ rc = select(0, NULL, NULL, NULL, &wait);
+#endif
+ }
+ else {
+ /* Note that on some platforms 'timeout' may be modified by select().
+ If you need access to the original value save a copy beforehand. */
+ rc = select(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout);
+ }
+
+ switch(rc) {
+ case -1:
+ /* select error */
+ break;
+ case 0:
+ default:
+ /* timeout or readable/writable sockets */
+ printf("perform!\n");
+ curl_multi_perform(multi_handle, &still_running);
+ printf("running: %d!\n", still_running);
+ break;
+ }
+ } while(still_running);
+
+ curl_multi_cleanup(multi_handle);
+
+ /* always cleanup */
+ curl_easy_cleanup(curl);
+
+ /* then cleanup the formpost chain */
+ curl_formfree(formpost);
+
+ /* free slist */
+ curl_slist_free_all(headerlist);
+ }
+ return 0;
+}
diff --git a/docs/examples/postit2-formadd.c b/docs/examples/postit2-formadd.c
new file mode 100644
index 000000000..0ac09f259
--- /dev/null
+++ b/docs/examples/postit2-formadd.c
@@ -0,0 +1,107 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2017, 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 Multipart formpost with file upload and two additional parts.
+ * </DESC>
+ */
+/* Example code that uploads a file name 'foo' to a remote script that accepts
+ * "HTML form based" (as described in RFC1738) uploads using HTTP POST.
+ *
+ * The imaginary form we'll fill in looks like:
+ *
+ * <form method="post" enctype="multipart/form-data" action="examplepost.cgi">
+ * Enter file: <input type="file" name="sendfile" size="40">
+ * Enter file name: <input type="text" name="filename" size="30">
+ * <input type="submit" value="send" name="submit">
+ * </form>
+ *
+ * This exact source code has not been verified to work.
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <curl/curl.h>
+
+int main(int argc, char *argv[])
+{
+ CURL *curl;
+ CURLcode res;
+
+ struct curl_httppost *formpost = NULL;
+ struct curl_httppost *lastptr = NULL;
+ struct curl_slist *headerlist = NULL;
+ static const char buf[] = "Expect:";
+
+ curl_global_init(CURL_GLOBAL_ALL);
+
+ /* Fill in the file upload field */
+ curl_formadd(&formpost,
+ &lastptr,
+ CURLFORM_COPYNAME, "sendfile",
+ CURLFORM_FILE, "postit2.c",
+ CURLFORM_END);
+
+ /* Fill in the filename field */
+ curl_formadd(&formpost,
+ &lastptr,
+ CURLFORM_COPYNAME, "filename",
+ CURLFORM_COPYCONTENTS, "postit2.c",
+ CURLFORM_END);
+
+
+ /* Fill in the submit field too, even if this is rarely needed */
+ curl_formadd(&formpost,
+ &lastptr,
+ CURLFORM_COPYNAME, "submit",
+ CURLFORM_COPYCONTENTS, "send",
+ CURLFORM_END);
+
+ curl = curl_easy_init();
+ /* initialize custom header list (stating that Expect: 100-continue is not
+ wanted */
+ headerlist = curl_slist_append(headerlist, buf);
+ if(curl) {
+ /* what URL that receives this POST */
+ curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/examplepost.cgi");
+ if((argc == 2) && (!strcmp(argv[1], "noexpectheader")))
+ /* only disable 100-continue header if explicitly requested */
+ curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
+ curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
+
+ /* 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);
+
+ /* then cleanup the formpost chain */
+ curl_formfree(formpost);
+ /* free slist */
+ curl_slist_free_all(headerlist);
+ }
+ return 0;
+}
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