我正在尝试获取信息CURLINFO_RESPONSE_CODE
和CURLINFO_CONTENT_TYPE
with curl_easy_getinfo
,但两次尝试似乎都失败了。
就像在 LuaJit/scanf 示例中一样,我正在分配ffi.new("int[1]")
以获取一个元素作为指针并将其用作参数,以便在保存后读取值。
ffi = require "ffi"
url = [[http://static02.mediaite.com/geekosystem/uploads/2013/12/doge.jpg]]
ffi.cdef [[
int curl_version();
void *curl_easy_init();
int curl_easy_setopt(void *curl, int option, ...);
int curl_easy_perform(void *curl);
void curl_easy_cleanup(void *curl);
int curl_easy_getinfo(void *curl, int info, ...);
]]
function curl_callback(ptr, size, nmemb, userdata)
print("Data callback! File-ID: ", userdata, "\n")
return size*nmemb
end
ffi_curl_callback = ffi.cast("size_t (*)(char *ptr, size_t size, size_t nmemb, void *userdata)", curl_callback)
CURLOPT_URL = 10002
CURLOPT_WRITEFUNCTION = 20011
CURLOPT_VERBOSE = 41
CURLOPT_PROGRESSDATA = 10057
CURLOPT_NOPROGRESS = 43
CURLOPT_WRITEDATA = 10001
CURLE_OK = 0
CURLINFO_RESPONSE_CODE = 2097154
CURLINFO_CONTENT_TYPE = 1048594
libcurl = ffi.load("libcurl.dll")
-- print("cURL Version: ", libcurl.curl_version(), "\n")
curl = libcurl.curl_easy_init()
if curl then
file = ffi.new("int", 0xabc) -- not needed
print("Trying to download: ", url, "\n")
libcurl.curl_easy_setopt(curl, CURLOPT_VERBOSE, ffi.new("long", 1))
libcurl.curl_easy_setopt(curl, CURLOPT_URL, url)
libcurl.curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, ffi_curl_callback)
--libcurl.curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 1)
--libcurl.curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, 123)
libcurl.curl_easy_setopt(curl, CURLOPT_WRITEDATA, ffi.cast("void *", file))
-- bug fixed, called curl_easy_getinfo before curl_easy_perform
result = libcurl.curl_easy_perform(curl)
if result == CURLE_OK then
response_code = ffi.new("int[1]")
content_type = ffi.new("char*[1]")
libcurl.curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, response_code)
libcurl.curl_easy_getinfo(curl, CURLINFO_CONTENT_TYPE, content_type)
print("RESPONSE CODE: '", tonumber(response_code[0]), "'\n")
print("CONTENT TYPE: '", ffi.string(content_type[0]), "'\n")
else
print("Error! Result: ", result, "\n")
end
libcurl.curl_easy_cleanup(curl)
end
输出是(错误的旧输出):
Data callback! File-ID: cdata<void *>: 0x00000abc
Data callback! File-ID: cdata<void *>: 0x00000abc
Data callback! File-ID: cdata<void *>: 0x00000abc
Data callback! File-ID: cdata<void *>: 0x00000abc
Data callback! File-ID: cdata<void *>: 0x00000abc
Data callback! File-ID: cdata<void *>: 0x00000abc
Result: 0
RESPONSE CODE: ' nil '
CONTENT TYPE: ' '
结果 0 表示 CURLE_OK 并且文件已真正下载(我已经使用我的自定义游戏 FS 函数进行了测试)。虽然我无法获得响应代码或内容类型。有人知道我做错了什么吗?