On 3/7/2016 1:15 AM, Waitman Gobble wrote:
When I set Content-Type header to multipart/form-data and add data to
CURLOPT_POSTFIELDS it seems to hang. I thought maybe proxy issue but
tried with/without.
1) If sending simple string like a=foo&j=boo then there isn't an issue
2) If I don't set Content-Length then it doesn't hang, makes the post.
However receiving side doesn't get data (content length 172 but should
be 134610
Thanks for any help or pointers.
system,
FreeBSD ob4.cloudqx.com 10.2-RELEASE-p9 FreeBSD 10.2-RELEASE-p9 #0:
curl-7.47.0 from ports
#include <iostream>
#include <fstream>
#include <string>
#include <curl/curl.h>
using namespace std;
int main(void) {
CURL *conn = NULL;
curl_global_init(CURL_GLOBAL_DEFAULT);
conn = curl_easy_init();
static char errorBuffer[CURL_ERROR_SIZE];
curl_easy_setopt(conn, CURLOPT_ERRORBUFFER, errorBuffer);
//curl_easy_setopt(conn, CURLOPT_URL, "http://wp.amodaco.com/filepost.php";);
curl_easy_setopt(conn, CURLOPT_HEADER, 1L);
//curl_easy_setopt(conn, CURLOPT_PROXY, "http://127.0.0.1";);
//curl_easy_setopt(conn, CURLOPT_PROXYPORT, 3128);
curl_easy_setopt(conn, CURLOPT_URL, "https://hub.zilla.tech/filepost.php";);
char* post_string;
int post_size;
ifstream file;
file.open("/c/nginx/0/11/0000000110",ios_base::binary);
//file.open("/c/nginx/7/10/0000000107",ios_base::binary);
file.seekg(0,ios::end);
post_size = file.tellg();
file.seekg(0,ios::beg);
post_string = new char[post_size];
file.read(post_string,post_size);
file.close();
struct curl_slist *chunk = NULL;
chunk = curl_slist_append(chunk, "Content-Type: multipart/form-data;
boundary=-----------------------------84927149120355803091994092429");
std::string cl = "Content-Length: " + std::to_string(post_size);
chunk = curl_slist_append(chunk, cl.c_str());
curl_easy_setopt(conn, CURLOPT_POSTFIELDS, post_string);
curl_easy_setopt(conn, CURLOPT_HTTPHEADER, chunk);
cout << "before perform\r\n";
curl_easy_perform(conn);
curl_easy_cleanup(conn);
cout << "finis\r\n";
cout << cl << "\r\n";
return(0);
}
Don't set those headers and if you want to do multipart don't use
CURLOPT_POSTFIELDS, use CURLOPT_HTTPPOST [1] instead. Look at the
EXAMPLE section it probably does what you need. Also review curl_formadd
[2], If you have a particularly large file you'll need to use
CURLFORM_STREAM and CURLOPT_READFUNCTION instead of loading the entire
thing in memory.
struct curl_httppost *formpost = NULL;
struct curl_httppost *lastptr = NULL;
<curl_formadd calls>
curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
As an aside, if you don't want multipart and you use CURLOPT_POSTFIELDS
and pass it binary data set the size using CURLOPT_POSTFIELDSIZE [3] or
CURLOPT_POSTFIELDSIZE_LARGE [4] and make sure you use exactly the type
specified, for example:
curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, (long)post_size);
or
curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE_LARGE, (curl_off_t)post_size);
[1]: https://curl.haxx.se/libcurl/c/CURLOPT_HTTPPOST.html
[2]: https://curl.haxx.se/libcurl/c/curl_formadd.html
[3]: https://curl.haxx.se/libcurl/c/CURLOPT_POSTFIELDSIZE.html
[4]: https://curl.haxx.se/libcurl/c/CURLOPT_POSTFIELDSIZE_LARGE.html
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