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authorDaniel Stenberg <daniel@haxx.se>2013-09-29 00:12:30 +0200
committerDaniel Stenberg <daniel@haxx.se>2013-09-29 00:12:30 +0200
commit3c34f453fa62bb3715e47c6096b22d0bb9db2bbf (patch)
tree544510c9849b131007b9e3124e8e20f2174e207a
parentd5f687ed8f069ca8af4e48f7e965b60ba3f4a3e0 (diff)
postinmemory: new example
This is similar to getinmemory.c but with an initial POST. Combined-by: Ulf Samuelsson
-rw-r--r--docs/examples/Makefile.inc2
-rw-r--r--docs/examples/postinmemory.c111
2 files changed, 112 insertions, 1 deletions
diff --git a/docs/examples/Makefile.inc b/docs/examples/Makefile.inc
index 6752db43d..5d3bcfc1a 100644
--- a/docs/examples/Makefile.inc
+++ b/docs/examples/Makefile.inc
@@ -5,7 +5,7 @@ check_PROGRAMS = 10-at-a-time anyauthput cookie_interface debug fileupload \
persistant post-callback postit2 sepheaders simple simplepost simplessl \
sendrecv httpcustomheader certinfo chkspeed ftpgetinfo ftp-wildcard \
smtp-multi simplesmtp smtp-tls rtsp externalsocket resolve \
- progressfunc pop3s pop3slist imap url2file sftpget ftpsget
+ progressfunc pop3s pop3slist imap url2file sftpget ftpsget postinmemory
# 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/postinmemory.c b/docs/examples/postinmemory.c
new file mode 100644
index 000000000..cd2bd13fb
--- /dev/null
+++ b/docs/examples/postinmemory.c
@@ -0,0 +1,111 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2013, 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 http://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.
+ *
+ ***************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <curl/curl.h>
+
+struct MemoryStruct {
+ char *memory;
+ size_t size;
+};
+
+static size_t
+WriteMemoryCallback(void *contents, size_t size, size_t nmemb, void *userp)
+{
+ size_t realsize = size * nmemb;
+ struct MemoryStruct *mem = (struct MemoryStruct *)userp;
+
+ mem->memory = realloc(mem->memory, mem->size + realsize + 1);
+ if(mem->memory == NULL) {
+ /* out of memory! */
+ printf("not enough memory (realloc returned NULL)\n");
+ return 0;
+ }
+
+ memcpy(&(mem->memory[mem->size]), contents, realsize);
+ mem->size += realsize;
+ mem->memory[mem->size] = 0;
+
+ return realsize;
+}
+
+int main(void)
+{
+ CURL *curl;
+ CURLcode res;
+ struct MemoryStruct chunk;
+ static const char *postthis="Field=1&Field=2&Field=3";
+
+ chunk.memory = malloc(1); /* will be grown as needed by realloc above */
+ chunk.size = 0; /* no data at this point */
+
+ curl_global_init(CURL_GLOBAL_ALL);
+ curl = curl_easy_init();
+ if(curl) {
+
+ curl_easy_setopt(curl, CURLOPT_URL, "http://www.example.org/");
+
+ /* send all data to this function */
+ curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+
+ /* we pass our 'chunk' struct to the callback function */
+ curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+
+ /* some servers don't like requests that are made without a user-agent
+ field, so we provide one */
+ curl_easy_setopt(curl, CURLOPT_USERAGENT, "libcurl-agent/1.0");
+
+ curl_easy_setopt(curl, CURLOPT_POSTFIELDS, postthis);
+
+ /* if we don't provide POSTFIELDSIZE, libcurl will strlen() by
+ itself */
+ curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, (long)strlen(postthis));
+
+ /* 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));
+ }
+ else {
+ /*
+ * Now, our chunk.memory points to a memory block that is chunk.size
+ * bytes big and contains the remote file.
+ *
+ * Do something nice with it!
+ */
+ printf("%s\n",chunk.memory);
+ }
+
+ /* always cleanup */
+ curl_easy_cleanup(curl);
+
+ if(chunk.memory)
+ free(chunk.memory);
+
+ /* we're done with libcurl, so clean it up */
+ curl_global_cleanup();
+ }
+ return 0;
+}