tizen 2.3.1 release

[external/curl.git] / docs / examples / httpcustomheader.c

diff --git a/docs/examples/httpcustomheader.c b/docs/examples/httpcustomheader.c
index 599b84f..8542ead 100644 (file)
--- a/docs/examples/httpcustomheader.c
+++ b/docs/examples/httpcustomheader.c
@@ -1,12 +1,24 @@
-/*****************************************************************************
+/***************************************************************************
  *                                  _   _ ____  _
  *  Project                     ___| | | |  _ \| |
  *                             / __| | | | |_) | |
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- */
-
+ * Copyright (C) 1998 - 2014, 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 <curl/curl.h>
 
@@ -19,20 +31,36 @@ int main(void)
   if(curl) {
     struct curl_slist *chunk = NULL;
 
-    chunk = curl_slist_append(chunk, "Accept: moo");
+    /* Remove a header curl would otherwise add by itself */
+    chunk = curl_slist_append(chunk, "Accept:");
+
+    /* Add a custom header */
     chunk = curl_slist_append(chunk, "Another: yes");
 
-    /* request with the built-in Accept: */
+    /* Modify a header curl otherwise adds differently */
+    chunk = curl_slist_append(chunk, "Host: example.com");
+
+    /* Add a header with "blank" contents to the right of the colon. Note that
+       we're then using a semicolon in the string we pass to curl! */
+    chunk = curl_slist_append(chunk, "X-silly-header;");
+
+    /* set our custom set of headers */
+    res = curl_easy_setopt(curl, CURLOPT_HTTPHEADER, chunk);
+
     curl_easy_setopt(curl, CURLOPT_URL, "localhost");
     curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
-    res = curl_easy_perform(curl);
 
-    /* redo request with our own custom Accept: */
-    res = curl_easy_setopt(curl, CURLOPT_HTTPHEADER, chunk);
     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);
+
+    /* free the custom headers */
+    curl_slist_free_all(chunk);
   }
   return 0;
 }