使用libcurl通过HTTP从内存（而不是磁盘）发送文件 [英] Sending a file from memory (rather than disk) over HTTP using libcurl

问题描述

我想通过用C ++编写的程序发送图片。 - OK
它的工作原理，但我想发送图片从预先载入的载体到一个变量char（你知道我的意思吗？首先，我将图片加载到一个变量，然后发送变量）原因现在我必须指定磁盘上的图片的路径。

I would like to send pictures via a program written in C + +. - OK It works, but I would like to send the pictures from pre-loaded carrier to a variable char (you know what I mean? First off, I load the pictures into a variable and then send the variable), cause now I have to specify the path of the picture on a disk.

我想使用curl库而不是通过exe编写这个程序在c ++中。延期。
我也发现了这样一个程序（我已经修改了一些）

I wanted to write this program in c++ by using the curl library, not through exe. extension. I have also found such a program (which has been modified by me a bit)

推荐答案

CURLFORM_PTRCONTENTS不是

CURLFORM_PTRCONTENTS is not the correct usage here, it will not create a file upload part.

而应该使用CURLFORM_BUFFER 从内存中已有的缓冲区发送图片。

Instead one should use CURLFORM_BUFFER to send an image from an already existing buffer in memory.

 curl_formadd(&formpost,
          &lastptr,
          CURLFORM_COPYNAME, "send",
          CURLFORM_BUFFER, "nowy.jpg",
          CURLFORM_BUFFERPTR, data,
          CURLFORM_BUFFERLENGTH, size,
          CURLFORM_END);

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