diff options
| -rw-r--r-- | docs/examples/post-callback.c | 52 |
1 files changed, 45 insertions, 7 deletions
diff --git a/docs/examples/post-callback.c b/docs/examples/post-callback.c index 76d1e1ba5..ecffce303 100644 --- a/docs/examples/post-callback.c +++ b/docs/examples/post-callback.c @@ -1,8 +1,8 @@ /***************************************************************************** - * _ _ ____ _ - * Project ___| | | | _ \| | - * / __| | | | |_) | | - * | (__| |_| | _ <| |___ + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * $Id$ @@ -57,9 +57,6 @@ int main(void) /* Now specify we want to POST data */ curl_easy_setopt(curl, CURLOPT_POST, TRUE); - /* Set the expected POST size */ - curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, pooh.sizeleft); - /* we want to use our own read function */ curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback); @@ -69,6 +66,47 @@ int main(void) /* get verbose debug output please */ curl_easy_setopt(curl, CURLOPT_VERBOSE, 1); + /* + If you use POST to a HTTP 1.1 server, you can send data without knowing + the size before starting the POST if you use chunked encoding. You + enable this by adding a header like "Transfer-Encoding: chunked" with + CURLOPT_HTTPHEADER. With HTTP 1.0 or without chunked transfer, you must + specify the size in the request. + */ +#ifdef USE_CHUNKED + { + curl_slist *chunk = NULL; + + chunk = curl_slist_append(chunk, "Transfer-Encoding: chunked"); + res = curl_easy_setopt(curl, CURLOPT_HTTPHEADER); + /* use curl_slist_free_all() after the *perform() call to free this + list again */ + } +#else + /* Set the expected POST size. If you want to POST large amounts of data, + consider CURLOPT_POSTFIELDSIZE_LARGE */ + curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, pooh.sizeleft); +#endif + +#ifdef DISABLE_EXPECT + /* + Using POST with HTTP 1.1 implies the use of a "Expect: 100-continue" + header. You can disable this header with CURLOPT_HTTPHEADER as usual. + NOTE: if you want chunked transfer too, you need to combine these two + since you can only set one list of headers with CURLOPT_HTTPHEADER. */ + + /* A less good option would be to enforce HTTP 1.0, but that might also + have other implications. */ + { + curl_slist *chunk = NULL; + + chunk = curl_slist_append(chunk, "Expect:"); + res = curl_easy_setopt(curl, CURLOPT_HTTPHEADER); + /* use curl_slist_free_all() after the *perform() call to free this + list again */ + } +#endif + /* Perform the request, res will get the return code */ res = curl_easy_perform(curl); |