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 <[email protected]> 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) > > 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";); > 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 > < Via: 1.1 vegur > < > * Closing connection 0 > ok > Server responeded with 200, request was 65525.000000 bytes > > > > > ------------------------------------------------------------------- > List admin: http://cool.haxx.se/list/listinfo/curl-library > Etiquette: http://curl.haxx.se/mail/etiquette.html
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