在这里,grow_buffer是一个用户定义的函数,用于将接收到的数据写入内存缓冲区。该函数有四个参数:contents表示接收到的数据指针,sz表示每个数据块的大小,nmemb表示数据块的数量,ctx表示用户自定义的上下文。 通过调用curl_easy_setopt()函数来设置选项。其中: CURLOPT_WRITEFUNCTION设置写入回调函数。 CURLOPT_WRITEDATA设...
I print the value of the pointer set in CURLOPT_WRITEDATA and the value that is passed when the callback is invoked and I can clearly see it is different. in the main initialization: struct MemoryStruct chunk; curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback); curl_easy_...
此函数必须能够通过将数据添加到已读取的数据中来处理多个小块中的数据。不能先调用new，然后再丢弃新...
curl_easy_setopt(curl, CURLOPT_HEADERDATA, headerfile); curl will call the WriteFunction with this as the userp when receiving the HTTP headers since you have no defined CURLOPT_HEADERFUNCTION function. If CURLOPT_HEADERFUNCTION is set then that will handle all the headers but since that is...