Thanks, I also finally figured it out (after many hours of banging my head into the wall), and was just about to answer myself on the list :)

Annoying that a tool like RequestBin isn’t accurate, it makes it kinda pointless…

Sorry for the noise, and thanks for your time!

Erik

> 30 aug 2015 kl. 20:53 skrev Aaron Meriwether <me_at_ameriwether.com>:
>
> RequestBin seems to be unable to deal properly with chunked posts.
> I tried your example against my own server (Apache+mod_cgi+Perl), and it works:
> https://gist.github.com/p120ph37/9490dc9a8a1b5a38b9a2 <https://gist.github.com/p120ph37/9490dc9a8a1b5a38b9a2>
>
> -Aaron
>
>> On Aug 30, 2015, at 3:40 AM, Erik Ronström <erik.ronstrom_at_doremir.com <mailto:erik.ronstrom_at_doremir.com>> wrote:
>>
>> Hi curlers,
>>
>> I’m trying to do a chunked POST, taking the post-callback example as a starting point. However, it appears that unless I provide a content length (with CURLOPT_POSTFIELDSIZE), the post data is being sent. The read callback is being called, but no body data is actually being sent to the server.
>>
>> Below is the code used, and its output. libcurl says the request is 65525 bytes, but RequestBin says ”Form/Post Parameters: None” and ”Raw Body: None”. (http://requestb.in/1glodpr1?inspect#1mtrcf <http://requestb.in/1glodpr1?inspect#1mtrcf>)
>>
>> What am I missing here? Probably something trivial, but I cannot figure it out!
>>
>> Many thanks
>> Erik
>>
>>
>> static size_t _upload_read_function(void *ptr, size_t size, size_t nmemb, void *data)
>> {
>> struct WriteThis *pooh = (struct WriteThis *)data;
>> size_t max_bytes = size*nmemb;
>> if (max_bytes < 1)
>> return 0;
>>
>> if (pooh->sizeleft) {
>> size_t bytes = max_bytes < pooh->sizeleft ? max_bytes : pooh->sizeleft;
>> memcpy(ptr, pooh->readptr, bytes);
>> pooh->readptr += bytes;
>> pooh->sizeleft -= bytes;
>> printf("upload_read_function: %zu bytes (%ld left)\n", bytes, pooh->sizeleft);
>> return size*nmemb;
>> }
>>
>> return 0;
>> }
>>
>>
>> int main(int argc, char const *argv[])
>> {
>> curl_version_info_data *curl_version = curl_version_info(CURLVERSION_NOW);
>> printf("libcurl: %s\n", curl_version->version);
>>
>> size_t buffer_size = ... ;
>> unsigned char *ogg_buffer = ... ;
>>
>> struct WriteThis pooh;
>> pooh.readptr = ogg_buffer;
>> pooh.sizeleft = buffer_size;
>>
>> CURL *curl = curl_easy_init();
>> if (curl) {
>> curl_easy_setopt(curl, CURLOPT_URL, "http://requestb.in/1glodpr1 <http://requestb.in/1glodpr1>");
>> curl_easy_setopt(curl, CURLOPT_POST, 1L);
>> struct curl_slist *chunk = NULL;
>> chunk = curl_slist_append(chunk, "Transfer-Encoding: chunked");
>> curl_easy_setopt(curl, CURLOPT_HTTPHEADER, chunk);
>> // curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, buffer_size); // <-- if this line is enabled, data is sent correctly
>> curl_easy_setopt(curl, CURLOPT_READDATA, &pooh);
>> curl_easy_setopt(curl, CURLOPT_READFUNCTION, _upload_read_function);
>> curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
>> CURLcode res = curl_easy_perform(curl);
>>
>> if (res == CURLE_OK) {
>> long response_code;
>> double request_size;
>> curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response_code);
>> curl_easy_getinfo(curl, CURLINFO_SIZE_UPLOAD, &request_size);
>> printf("Server responeded with %d, request was %f bytes\n", response_code, request_size);
>> } else {
>> fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
>> }
>>
>> // Cleanup
>> curl_slist_free_all(chunk);
>> curl_easy_cleanup(curl);
>> }
>>
>>
>> libcurl: 7.37.1
>> * Hostname was NOT found in DNS cache
>> * Trying 54.225.217.107...
>> * Connected to requestb.in (54.225.217.107) port 80 (#0)
>>> POST /1glodpr1 HTTP/1.1
>> Host: requestb.in
>> Accept: */*
>> Transfer-Encoding: chunked
>> Content-Type: application/x-www-form-urlencoded
>> Expect: 100-continue
>>
>> < HTTP/1.1 100 Continue
>> upload_read_function: 16372 bytes (48988 left)
>> upload_read_function: 16372 bytes (32616 left)
>> upload_read_function: 16372 bytes (16244 left)
>> upload_read_function: 16244 bytes (0 left)
>> < HTTP/1.1 200 OK
>> < Connection: close
>> * Server gunicorn/19.3.0 is not blacklisted
>> < Server: gunicorn/19.3.0
>> < Date: Sun, 30 Aug 2015 08:33:07 GMT
>> < Content-Type: text/html; charset=utf-8
>> < Content-Length: 2
>> < Sponsored-By: https://www.runscope.com <https://www.runscope.com/>
>> < Via: 1.1 vegur
>> <
>> * Closing connection 0
>> ok
>> Server responeded with 200, request was 65525.000000 bytes
>>
>>
>>
>>
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Received on 2015-08-30