> On 13 Dec 2019, at 08:53, Karthik Sharma <karthik.sha...@gmail.com> wrote: > > The `CURL` command that I am using is shown below. > > curl -F 'file=@/home/karthik/Workspace/downloadfile.out' > http://127.0.0.1:5000/file-upload --verbose > > The response from the server is shown below. > > * Trying 127.0.0.1... > * Connected to 127.0.0.1 (127.0.0.1) port 5000 (#0) >> POST /file-upload HTTP/1.1 >> Host: 127.0.0.1:5000 >> User-Agent: curl/7.47.0 >> Accept: */* >> Content-Length: 663876790 >> Expect: 100-continue >> Content-Type: multipart/form-data; >> boundary=------------------------4e96ef0714498bd7 >> > < HTTP/1.1 100 Continue > * HTTP 1.0, assume close after body > < HTTP/1.0 201 CREATED > < Content-Type: application/json > < Content-Length: 46 > < Server: Werkzeug/0.16.0 Python/3.5.2 > < Date: Sat, 14 Dec 2019 07:05:15 GMT > < > { > "message": "File successfully uploaded" > } > * Closing connection 0 > > I want to implement the same command in C/C++ using libcurl. I am using the > following function. > > int FileUploadDownload::upload(const std::string &filename, const > std::string &url) { > > CURL *curl; > CURLcode res; > struct stat file_info; > curl_off_t speed_upload, total_time; > FILE *fd; > > fd = fopen(filename.c_str(), "rb"); > if(!fd) { > m_logger->errorf("unable to open file: %s\n",strerror(errno)); > return 1; > } > if(fstat(fileno(fd), &file_info) != 0) { > m_logger->errorf("unable to get file stats: %s\n",strerror(errno)); > return 2; > } > > std::cout << "filename : "<< filename << std::endl; > std::cout << "url : " << url << std::endl; > > curl = curl_easy_init(); > if(curl) { > > curl_easy_setopt(curl, CURLOPT_URL, > url.c_str()); > > curl_easy_setopt(curl, CURLOPT_POSTFIELDS, filename.c_str()); > curl_easy_setopt(curl, CURLOPT_POST, 1L); > curl_easy_setopt(curl, CURLOPT_READDATA, fd); > curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, > (curl_off_t) file_info.st_size); > curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L); > > res = curl_easy_perform(curl); > if (res != CURLE_OK) { > m_logger->errorf("curl_easy_perform() failed: > %s\n",curl_easy_strerror(res)); > } else { > curl_easy_getinfo(curl, CURLINFO_SPEED_UPLOAD, &speed_upload); > curl_easy_getinfo(curl, CURLINFO_TOTAL_TIME, &total_time); > m_logger->infof("Speed: %" CURL_FORMAT_CURL_OFF_T " bytes/sec > during %" > CURL_FORMAT_CURL_OFF_T ".%06ld seconds\n", > speed_upload, > (total_time / 1000000), (long) (total_time % > 1000000)); > } > } > return 0; > } > The below is the result that I get from the server. > > The result that I get is shown below. > * Trying 127.0.0.1... > * Connected to 127.0.0.1 (127.0.0.1) port 5000 (#0) >> POST /file-upload HTTP/1.1 >> Host: 127.0.0.1:5000 >> User-Agent: curl/7.47.0 >> Accept: */* >> Content-Length: 550 >> Expect: 100-continue >> Content-Type: multipart/form-data; >> boundary=------------------------c8ef4837136fca99 >> > < HTTP/1.1 100 Continue > * HTTP 1.0, assume close after body > < HTTP/1.0 201 CREATED > < Content-Type: application/json > < Content-Length: 46 > < Server: Werkzeug/0.16.0 Python/3.5.2 > < Date: Sat, 14 Dec 2019 07:09:47 GMT > < > { > "message": "File successfully uploaded" > } > * Closing connection 0 > > > My aim is to mimic the curl command above in the C/C++ code below. What am I > doing wrong ?
My guess Is that there is way to handle the 100 continue and you are missing that code. Or you need to tell curl not to use the send the “Expect: 100 Continue” header. The purpose of the 100 Continue is to allow the server to refuse the POST. https://tools.ietf.org/html/rfc7231#section-6.2.1 Barry > -- > https://mail.python.org/mailman/listinfo/python-list > -- https://mail.python.org/mailman/listinfo/python-list
