with all your recommandation,i have modified my code,please take a look at my
code,is it correct?i reference the code from
https://github.com/polyu/Cloud_Game/blob/master/ClientGUI/GUI/httpclient.cpp
i have question,due to my code is use as a dynamic link library,however the
static size_t OnWriteData(void* buffer, size_t size, size_t nmemb, void*
lpVoid) funcition is not allow using in dll,is it correct?how do i modify this
function that i could use it in dll?
//mycode is dll
//"httpclient.h"
typedef char * LPCSTR
extern "C"
{
__declspec(dllexport) int __stdcall sendmyinv(const char* theurl,const char
* user,const char * pass,const char * pCaPath,const int recordcount,const char
* prodno,const char * prodadd,const char * batchno,const double* invnum,const
double * stdprice,const double * sellprice,const char * clino,const char *
invbywho)
}
//"httpclient.cpp"
#include <stdio.h>
#include <curl/curl.h>
#include "httpclient.h"
#include "cJSON.h"
static size_t OnWriteData(void* buffer, size_t size, size_t nmemb, void* lpVoid)
{
std::string* str = dynamic_cast<std::string*>((std::string *)lpVoid)
if( NULL == str || NULL == buffer )
{
return -1
}
char* pData = (char*)buffer
str->append(pData, size * nmemb)
return nmemb
}
int __stdcall sendmyinv(const char* theurl,const char * user,const char *
pass,const char * pCaPath,const int recordcount,const char * prodno,const char
* prodadd,const char * batchno,const char* invnum,const char * stdprice,const
char * sellprice,const char * clino,const char * invbywho)
{
CURLcode res
//serialze to json
cJSON *root
root=cJSON_CreateObject()
cJSON_AddStringToObject(root, "user", user)
cJSON_AddStringToObject(root, "pass", pass)
cJSON_AddNumberToObject(root, "recordcount", pass)
cJSON_AddStringToObject(root, "prodno", prodno)
cJSON_AddStringToObject(root, "prodadd", prodadd)
cJSON_AddStringToObject(root, "batchno", batchno)
cJSON_AddStringToObject(root, "invnum", invnum)
cJSON_AddStringToObject(root, "stdprice", stdprice)
cJSON_AddStringToObject(root, "sellprice", sellprice)
cJSON_AddStringToObject(root, "clino",clino)
cJSON_AddStringToObject(root, "invbywho",invbywho)
char *out
out=cJSON_Print(root)
std::string strResponse=""
int thereturncode=0
CURL* curl = curl_easy_init()
if(NULL == curl)
{
return CURLE_FAILED_INIT
}
curl_easy_setopt(curl, CURLOPT_URL, theurl)
curl_easy_setopt(curl, CURLOPT_POST, 1)
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, out)
curl_easy_setopt(curl, CURLOPT_READFUNCTION, NULL)
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, OnWriteData)
curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&strResponse)
curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1)
if(NULL == pCaPath)
{
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, false)
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, false)
}
else
{
//default is PEM,in addition support DER
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, true)
curl_easy_setopt(curl, CURLOPT_CAINFO, pCaPath)
}
curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 3)
curl_easy_setopt(curl, CURLOPT_TIMEOUT, 3)
res = curl_easy_perform(curl)
if(res != CURLE_OK)
{
free(out)
curl_easy_cleanup(curl)
return res
}
else
{
//json deserialize
size_t slen=strlen(strResponse.c_str())+1
char * json = new json[slen]
json =cJSON_Parse(strResponse.c_str())
thereturncode=cJSON_GetObjectItem(json, "returncode")->valueint
//
free(out)
curl_easy_cleanup(curl)
return thereturncode
}
}with with
--------------------------------------------------------------------------------
------------------ 原始邮件 ------------------
发件人: Ray Satiro <[email protected]>
发送时间: 2015-01-10 09:44:08
收件人: curl-library <[email protected]>
抄送: (无)
主题: Re: how do i post json to a https ?
On 1/9/2015 11:03 AM, redmond wrote:
though im unfamilar with C/C++,i have wrote the following code with libcurl
docs,how do i post the json on https(the ssl website has no cert,just like
https://www.google.com,it don't need the cert)?i search google for this,however
there is no answer.i tried to write the following code,are these correct?how
do i determine the http server respond ok ?in addition,static method is not
allow use in dll
Typically the SSL backend used by libcurl will have a database of certificates
and/or you'll have to load your own to verify your website.
In your code the read function really isn't necessary for what you are doing.
As documented in CURLOPT_POST [1] you'll need chunked transfer encoding if you
are going to use a read function. I made an example for you without a read
function at https://gist.github.com/jay/2a6c54cc6da442489561
[1]: http://curl.haxx.se/libcurl/c/CURLOPT_POST.html
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