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...
问CURLOPT_WRITEDATA的问题EN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...
h> #include"../include/curl.h" size_t write_data(void *ptr, size_t size, size_t count, void *stream) { /* ptr - your string variable. stream - data chuck you received */ printf("%.*s", size, (char*)stream); } int main() { int res=0,i=0; char buffer[4098]="",buff...
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_...
> curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback); > curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)(*&chunk*)); > *printf("chunk: %p, chunk.memory: %p, chunk.size: %lu\n", &chunk, > chunk.memory, (unsigned long)chunk.size);* ...