curl-library
bitmap buffer (c++)
Date: 13 Nov 2008 12:08:11 -0000
I use curl-easy to receive a bitmap buffer by a network camera, but the buffer doesn't arrive
always complete, the more if i use many applications doing the same thing...
I would like to know if there is a way to force curl to take ALL the buffer.
Here is a piece of the code (C++)
struct MemoryStruct {
unsigned char *memory;
size_t size;
};
size_t WriteMemoryCallback(void *ptr, size_t size, size_t nmemb, void *data)
{
register int realsize = size * nmemb;
struct MemoryStruct *mem = (struct MemoryStruct *)data;
mem->memory = (unsigned char *)realloc(mem->memory, mem->size + realsize + 1);
if (mem->memory) {
memcpy(&(mem->memory[mem->size]), ptr, realsize);
mem->size += realsize;
mem->memory[mem->size] = 0;
}
return realsize;
}
void conta() throw (std::runtime_error){
...
...
...
CURL *curl_handle;
char* info;
struct MemoryStruct chunk;
chunk.memory=NULL;
chunk.size = 0;
curl_handle = curl_easy_init();
curl_easy_setopt(curl_handle, CURLOPT_URL, url);
curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
curl_easy_setopt(curl_handle, CURLOPT_HEADER,false);
curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk);
CURLcode error;
error=curl_easy_perform(curl_handle);
//Here i use the buffer stored in the chunk
...
...
...
}
Anyone can help??
thanx in advance
best regards
manu
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Received on 2008-11-13