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我在尝试与libcurl发送GET请求到服务器并保存响应。当我不使用CURLOPT_WRITEFUNCTION和CURLOPT_WRITEFDATA时,它正常工作,响应转到标准流,程序在按下按钮后关闭。Appcrash与卷曲
当我添加自己的函数和一个变量来保存响应,但是,响应结束时会出现额外的垃圾字符,并且程序在按下按钮后崩溃。
#include <iostream>
#include <tchar.h>
#include <stdio.h>
#include <conio.h>
#include "curl/curl.h"
#include "curl/easy.h"
#define FAIL 0
#define PASS 1
size_t curlWrite(void*, size_t, size_t, void*);
CURL *curl;
const char *baseURL = "XXXX";
const char *authHeader = "Authorization: Token token=YYYY";
int _tmain(int argc, _TCHAR* argv[])
{
bool cURLStatus = PASS;
CURLcode res;
struct curl_slist *headers = NULL;
headers = curl_slist_append(headers, authHeader);
char *response;
curl = curl_easy_init();
if(curl)
{
curl_easy_setopt(curl, CURLOPT_URL, baseURL);
curl_easy_setopt(curl, CURLOPT_HTTPGET, 1);
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, curlWrite);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, response);
res = curl_easy_perform(curl);
if(CURLE_OK != res) cURLStatus = FAIL;
}
else cURLStatus = FAIL;
if(cURLStatus) printf("Response: %s", response);
else printf("Error: %s", curl_easy_strerror(res));
curl_easy_cleanup(curl);
_getch();
return 0;
}
static size_t curlWrite(void *src, size_t size, size_t nmemb, void *dst)
{
printf("Source: %s", src);
memcpy(dst, src, size * nmemb);
return size * nmemb;
}
这是响应我得到,接着是APPCRASH,使用上面的代码:
来源:{ “current_bac”:0 “time_until_sober”:0}
响应:{ “current_bac”:0 “time_until_sober”:0} p
如果IC omment出以下行(和一个printf):
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, curlWrite);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, response);
我得到这个:
{ “current_bac”:0, “time_until_sober”:0}
我是什么做错了?