HTTP/HTTPSclient源代码演示样例
环境: zlib-1.2.8 openssl-1.0.1g curl-7.36
Author: Kagula
LastUpdateDate: 2016-05-09
阅读前提：CMake工具的基本使用、配置openssl-1.0.1g 开发环境
编译zlib库
下载zlib-1.2.8.tar.gz并解压缩到" D:SDKzlib-1.2.8"，使用CMake工具生成zlib.sln。在Visual Studio2013中打开并编译就可以。
编译curl-7.36.0
如果Open SSL已经安装到“D:SDKopenssl-1.0.1g”，先设置以下的环境变量
OPENSSL_LIBRARIES=D:SDKopenssl-1.0.1gout32
OPENSSL_ROOT_DIR=D:SDKopenssl-1.0.1g
从http://curl.haxx.se/下载curl-7.36.0.zip并解压缩到“D:SDKcurl-7.36.0”启动CMake工具Configure，分别设置LIB_EAY_RELEASE和SSL_EAY_RELEASE变量为“D:SDKopenssl-1.0.1gout32libeay32.lib”，“D:SDKopenssl-1.0.1gout32ssleay32.lib”,产生sln文件后打开，为里面的curlproject项目加入“USE_MANUAL”宏定义，然后build里面的4个项目成功。
为项目加入链接库libcurl_imp.lib ， 把libcurl.dll文件拷贝到C++项目路径下，否则程序执行会提示找不到动态链接库。
以下是HTTP/HTTPSclient演示样例
怎样使用
#include <iostream>
#include <string>
using namespace std;
#include "httpclient.h"
int main(int argc, char *argv[])
{
string response;
//login
kagula::network::CHttpClient client;
int nR = client.Post("https://lijun:8443/escortcashbox/main/login.do",
"data={"version":"1.0.0.0","user":"admin","password":"123"}",
response,true,
"d:cookie.txt",
"D:/workspace_qt/build-escortcashbox_c-Mingw32-Debug/debug/tomcat7.pem",
"D:/workspace_qt/build-escortcashbox_c-Mingw32-Debug/debug/client_all.pem",
"123456");
cout << nR << endl <<response << endl;
//upload png file
/*
std::map<std::string,std::string> mapFields;
std::map<std::string,std::vector<std::string>> mapFiles;
mapFields["data"] = "{"version":"1.0.0.0","socialid":"1012","realname":"realnamevalue","portrait":"protraitvalue","fingerid":"fingeridvalue","groupid":"123"}";
std::vector<std::string> vecFile(2);
vecFile[0] = "d:\b.png";
vecFile[1] = "image/png";
mapFiles["portraitFile"] = vecFile;
nR = client.MultipartFormdata("https://lijun:8443/escortcashbox/main/escortStaffAdd.do",
mapFields,mapFiles,
response,
"d:cookie.txt",
"D:/workspace_qt/build-escortcashbox_c-Mingw32-Debug/debug/tomcat7.pem",
"D:/workspace_qt/build-escortcashbox_c-Mingw32-Debug/debug/client_all.pem",
"123456");
cout << nR << endl << response << endl;
*/
//download png file
nR = client.GetFile("https://lijun:8443/escortcashbox/upload/img/20160527_110514_679_426.png",
"d:/ee.png",
"d:cookie.txt",
"D:/workspace_qt/build-escortcashbox_c-Mingw32-Debug/debug/tomcat7.pem",
"D:/workspace_qt/build-escortcashbox_c-Mingw32-Debug/debug/client_all.pem",
"123456");
cout << nR << endl;
return 0;
}
HttpClient.h封装好的头文件
//HttpClient.h源码清单
#ifndef _HTTPCLIENT_H_
#define _HTTPCLIENT_H_
#include <string>
#include <map>
#include <vector>
/*
Title: Get Response from Web Server by HTTP/HTTPS method.
Environment:
Windows 7SP1, Windows 8.1, Windows 10
QT Creator 3.5.1, Visual Studio 2013 Update1, Visual Studio 2013 Update5
libcurl 7.36.0, libcurl 7.46.0, Qt 5.6, MSYS2 64bits gcc 5.3.0
Last Update: 2016-05-27
Remark:
[1]假设要在多线程方式下同一时候调用多个CHttpClient实例。
须要在App初始化的时候调用kagula::network::Init();
在App结束的时候调用kagula::network::Cleanup();
[2]编译libcurl必须打开zlib标志。而且把OpenSSL也链进去。
Reference:
curl_eay_setopt manual
http://www.helplib.net/s/linux.die/65_2740/man-3-curl-easy-setopt.shtml
C++ cout format
http://www.cnblogs.com/devymex/archive/2010/09/06/1818754.html
*/
namespace kagula
{
namespace network
{
void Init();
void Cleanup();
class CHttpClient
{
public:
CHttpClient(void);
~CHttpClient(void);
public:
/**
* @brief HTTP/HTTPS POST/GET请求
* @param strUrl 输入參数,请求的Url地址,如:https://www.alipay.com
* @param strPost 输入參数,使用例如以下格式para1=val1¶2=val2&…
* @param strCookie 输入參数,Cookie文件名称，比如 d: empcookie.txt
* 假设为空，不启用Cookie.
* @param strResponse 输出參数,返回的内容
* @param bPost 是否Post方式发送请求，默认Post方式发送请求。
* @param pCaPath 输入參数,为CA证书的路径.假设输入为NULL,则不验证server端证书的有效性.
* @param pClientCalPath 输入參数，为client证书的路径.假设输入为NULL,则不验证client证书的有效性.
* @param pClientCalPassword 输入參数，为client证书的存取password.
* @return 返回是否Post成功
* 0 成功
* 7 无法连接
* 28 超时
* 58 服务端验证client证书失败。
* 60 client验证服务端证书失败。
*/
int Post(const char* pUrl,
const char* pPost,
std::string &strResponse,
bool bPost,
const char* pCookie,
const char* pCaPath = NULL,
const char* pClientCalPath = NULL,
const char* pClientCalPassword = NULL);
int MultipartFormdata(const char *pUrl,
const std::map<std::string,std::string> & mapFields,
const std::map<std::string,std::vector<std::string>> & mapFiles,
std::string & strResponse,
const char *pCookie,
const char * pCaPath = NULL,
const char * pClientCalPath = NULL,
const char * pClientCalPassword = NULL);
int GetFile(const char* pUrl,
const char* pLocalFullPath,
const char* pCookie,
const char* pCaPath = NULL,
const char* pClientCalPath = NULL,
const char* pClientCalPassword = NULL);
public:
void SetDebug(bool bDebug);
std::string getMsgInChinese(int code);
private:
bool m_bDebug;
bool PrintCookies(void* curl, std::string& strOut);
};
}
}
#endif
源文件清单
//HttpClient.cpp源码清单
#include "HttpClient.h"
#include <iostream>
#include <curl/curl.h>
#include <iomanip>
#include <sstream>
#ifdef WIN32
#pragma comment(lib,"libcurl_imp.lib")
#endif
namespace kagula
{
namespace network
{
CHttpClient::CHttpClient(void) :
m_bDebug(false)
{
}
CHttpClient::~CHttpClient(void)
{
}
bool CHttpClient::PrintCookies(void* curl, std::string& strOut)
{
std::ostringstream ostr;
CURLcode res;
struct curl_slist *cookies;
res = curl_easy_getinfo(curl, CURLINFO_COOKIELIST, &cookies);
if (res != CURLE_OK) {
ostr << "Curl curl_easy_getinfo failed:" << curl_easy_strerror(res) << std::endl;
strOut = ostr.str();
return false;
}
const struct curl_slist *nc = cookies;
int i = 1;
ostr << "Cookies, curl knows:" << std::endl;
while (nc) {
ostr << "[" << i++ << "]: " << nc->data << std::endl;
nc = nc->next;
}
return true;
}
static int OnDebug(CURL *, curl_infotype itype, char * pData, size_t size, void *)
{
if (itype == CURLINFO_TEXT)
{
//printf("[TEXT]%s
", pData);
}
else if (itype == CURLINFO_HEADER_IN)
{
printf("[HEADER_IN]%s
", pData);
}
else if (itype == CURLINFO_HEADER_OUT)
{
printf("[HEADER_OUT]%s
", pData);
}
else if (itype == CURLINFO_DATA_IN)
{
printf("[DATA_IN]%s
", pData);
}
else if (itype == CURLINFO_DATA_OUT)
{
printf("[DATA_OUT]%s
", pData);
}
return 0;
}
size_t OnWriteData_Post(void* buffer, size_t size, size_t nmemb, void* lpVoid)
{
std::string* str = reinterpret_cast<std::string*>(lpVoid);
if (NULL == str || NULL == buffer)
{
return -1;
}
char* pData = reinterpret_cast<char*>(buffer);
str->append(pData, size * nmemb);
return nmemb;
}
size_t OnWriteData_MultipartFormdata( void *inBuffer, size_t size, size_t nmemb, void *outBuffer )
{
int len = size * nmemb;
char *temp = new char[len+1];
memcpy(temp,inBuffer,len);
temp[len]=0;
reinterpret_cast<std::string *>(outBuffer)->append(temp);
delete temp;
return len;
}
size_t OnWriteData_GetFile(void *inBuffer, int size, int nmemb, std::string &content)
{
long len = size * nmemb;
std::string temp((char *)inBuffer, len);
content += temp;
return len;
}
std::string CHttpClient::getMsgInChinese(int code)
{
switch(code)
{
case 0:
return "通讯成功";
case 7:
return "server连接失败。";
case 28:
return "连接超时。";
case 58:
return "服务端验证client证书失败。";
case 60:
return "client验证服务端证书失败。";
default:
return "";
}
}
int CHttpClient::Post(const char* pUrl,
const char* pPost,
std::string & strResponse,
bool bPost,
const char* pCookie,
const char* pCaPath,
const char* pClientCalPath,
const char* pClientCalPassword)
{
strResponse = "";
CURLcode res;
CURL* curl = curl_easy_init();
if (NULL == curl)
{
return CURLE_FAILED_INIT;
}
if (m_bDebug)
{
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, OnDebug);
}
curl_easy_setopt(curl, CURLOPT_URL, pUrl);
if(bPost)
{
curl_easy_setopt(curl, CURLOPT_POST, 1);
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, pPost);
}
curl_easy_setopt(curl, CURLOPT_READFUNCTION, NULL);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, OnWriteData_Post);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&strResponse);
curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
if (pCookie!=0)
{
curl_easy_setopt(curl, CURLOPT_COOKIEFILE, (void *)pCookie);
curl_easy_setopt(curl, CURLOPT_COOKIEJAR, (void *)pCookie);
}
if (NULL == pCaPath)
{
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, false);
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, false);
//须要在编译curl的时候，一同编译zlib标志。要不然找不到这个标志.
//当然前提是你已经编译完毕zlib.
//发出接受gzip压缩内容的请求，假设server支持gzip内容，会返回压缩后的数据。
//假设Httpserver不支持gzip encoding也不影响libcurl正常工作。
//接受数据的时候，假设返回的是压缩数据，libcurl会自己主动解压数据。
curl_easy_setopt(curl, CURLOPT_ACCEPT_ENCODING, "gzip");
}
else
{
//缺省情况就是PEM，所以无需设置。另外支持DER
//curl_easy_setopt(curl,CURLOPT_SSLCERTTYPE,"PEM");
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, true);
curl_easy_setopt(curl, CURLOPT_CAINFO, pCaPath);
//服务端须要认证client的真实性，即双向认证。
if(pClientCalPath!=NULL)
{
curl_easy_setopt(curl,CURLOPT_SSLCERT, pClientCalPath);
curl_easy_setopt(curl,CURLOPT_SSLCERTPASSWD, pClientCalPassword);
curl_easy_setopt(curl,CURLOPT_SSLCERTTYPE, "PEM");
curl_easy_setopt(curl,CURLOPT_SSLKEY, pClientCalPath);
curl_easy_setopt(curl,CURLOPT_SSLKEYPASSWD, pClientCalPassword);
curl_easy_setopt(curl,CURLOPT_SSLKEYTYPE, "PEM");
}
}
//
curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 3);
curl_easy_setopt(curl, CURLOPT_TIMEOUT, 3);
//Webserver通常会重定向链接。比方訪问http:/xxx/x1.do自己主动转到http:/xxx/x2.do
//所以一定要设置CURLOPT_FOLLOWLOCATION为1,否则重定向后的数据不会返回。
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION,1);
res = curl_easy_perform(curl);
curl_easy_cleanup(curl);
return res;
}
int CHttpClient::MultipartFormdata(const char *pUrl,
const std::map<std::string,std::string> & mapFields,
const std::map<std::string,std::vector<std::string>> & mapFiles,
std::string & strResponse,
const char *pCookie,const char * pCaPath,
const char * pClientCalPath,const char * pClientCalPassword)
{
CURL *curl;
CURLcode res;
curl = curl_easy_init();
strResponse ="";
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, OnWriteData_MultipartFormdata);//write_data
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &strResponse);
struct curl_httppost *formpost = 0;
struct curl_httppost *lastptr = 0;
//
std::map<std::string,std::string>::const_iterator iterFields = mapFields.begin();
while(iterFields!=mapFields.end())
{
//curl_formadd(&formpost, &lastptr,CURLFORM_COPYNAME,"data",CURLFORM_COPYCONTENTS, pData,CURLFORM_END);
curl_formadd(&formpost, &lastptr,CURLFORM_COPYNAME,iterFields->first.c_str(),
CURLFORM_COPYCONTENTS, iterFields->second.c_str(),CURLFORM_END);
iterFields++;
}
std::map<std::string,std::vector<std::string>>::const_iterator iterFiles = mapFiles.begin();
while(iterFiles!=mapFiles.end())
{
//"image/jpeg","image/png"
//curl_formadd(&formpost, &lastptr,CURLFORM_PTRNAME, "portraitFile", CURLFORM_FILE, pImageFileName,CURLFORM_CONTENTTYPE, "image/png", CURLFORM_END);
curl_formadd(&formpost, &lastptr,CURLFORM_PTRNAME,
iterFiles->first.c_str(), CURLFORM_FILE,
iterFiles->second[0].c_str(),CURLFORM_CONTENTTYPE,
iterFiles->second[1].c_str(), CURLFORM_END);
iterFiles++;
}
//
curl_easy_setopt(curl, CURLOPT_URL, pUrl);
curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
if (pCookie!=0)
{
curl_easy_setopt(curl, CURLOPT_COOKIEFILE, (void *)pCookie);
curl_easy_setopt(curl, CURLOPT_COOKIEJAR, (void *)pCookie);
}
//单向认证用
if(pCaPath!=0)
{
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, true);
curl_easy_setopt(curl, CURLOPT_CAINFO, pCaPath);
}
//服务端须要认证client的真实性。即双向认证。
if(pClientCalPath!=0 && pClientCalPassword!=0)
{
curl_easy_setopt(curl,CURLOPT_SSLCERT, pClientCalPath);
curl_easy_setopt(curl,CURLOPT_SSLCERTPASSWD, pClientCalPassword);
curl_easy_setopt(curl,CURLOPT_SSLCERTTYPE, "PEM");
curl_easy_setopt(curl,CURLOPT_SSLKEY, pClientCalPath);
curl_easy_setopt(curl,CURLOPT_SSLKEYPASSWD, pClientCalPassword);
curl_easy_setopt(curl,CURLOPT_SSLKEYTYPE, "PEM");
}
res = curl_easy_perform(curl);
curl_easy_cleanup(curl);
curl_formfree(formpost);
return res;
}
int CHttpClient::GetFile(const char* pUrl,
const char* pLocalFullPath,
const char* pCookie,
const char* pCaPath,
const char* pClientCalPath,
const char* pClientCalPassword)
{
CURL *curl = NULL;
CURLcode code;
char bufError[CURL_ERROR_SIZE];
std::string content;
long retcode = 0;
code = curl_global_init(CURL_GLOBAL_DEFAULT);
if (code != CURLE_OK)
{
//printf("Failed to global init default [%d]
", code);
return -100;
}
curl = curl_easy_init();
if (curl == NULL)
{
//printf("Failed to create CURL connection
");
return -200;
}
code = curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, bufError);
if (code != CURLE_OK)
{
//printf("Failed to set error buffer [%d]
", code);
return code;
}
//curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
code = curl_easy_setopt(curl, CURLOPT_URL, pUrl);
if (code != CURLE_OK)
{
//printf("Failed to set URL [%s]
", error);
goto _END;
}
code = curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
if (code != CURLE_OK)
{
//printf("Failed to set redirect option [%s]
", error);
goto _END;
}
code = curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, OnWriteData_GetFile);
if (code != CURLE_OK)
{
//printf("Failed to set writer [%s]
", error);
goto _END;
}
code = curl_easy_setopt(curl, CURLOPT_WRITEDATA, &content);
if (code != CURLE_OK)
{
//printf("Failed to set write data [%s]
", error);
goto _END;
}
if (pCookie!=0)
{
curl_easy_setopt(curl, CURLOPT_COOKIEFILE, (void *)pCookie);
curl_easy_setopt(curl, CURLOPT_COOKIEJAR, (void *)pCookie);
}
//单向认证用
if(pCaPath!=0)
{
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, true);
curl_easy_setopt(curl, CURLOPT_CAINFO, pCaPath);
}
//服务端须要认证client的真实性。即双向认证。
if(pClientCalPath!=0 && pClientCalPassword!=0)
{
curl_easy_setopt(curl,CURLOPT_SSLCERT, pClientCalPath);
curl_easy_setopt(curl,CURLOPT_SSLCERTPASSWD, pClientCalPassword);
curl_easy_setopt(curl,CURLOPT_SSLCERTTYPE, "PEM");
curl_easy_setopt(curl,CURLOPT_SSLKEY, pClientCalPath);
curl_easy_setopt(curl,CURLOPT_SSLKEYPASSWD, pClientCalPassword);
curl_easy_setopt(curl,CURLOPT_SSLKEYTYPE, "PEM");
}
code = curl_easy_perform(curl);
if (code != CURLE_OK)
{
//printf("Failed to get '%s' [%s]
", URL, error);
goto _END;
}
code = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &retcode);
if ((code == CURLE_OK) && retcode == 200)
{
double length = 0;
code = curl_easy_getinfo(curl, CURLINFO_CONTENT_LENGTH_DOWNLOAD, &length);
//printf("%d", retcode);
FILE * file = fopen(pLocalFullPath, "wb");
fseek(file, 0, SEEK_SET);
fwrite(content.c_str(), 1, (size_t)length, file);
fclose(file);
code = CURLE_OK;
goto _END;
}
_END:
curl_easy_cleanup(curl);
return code;
}
///////////////////////////////////////////////////////////////////////////////////////////////
void CHttpClient::SetDebug(bool bDebug)
{
m_bDebug = bDebug;
}
void Init()
{
//the function is not thread safe.
curl_global_init(CURL_GLOBAL_ALL);
}
void Cleanup()
{
curl_global_cleanup();
}
}
}
注意：
[1]MSys64 Mingw32 QtCreator 32位C++程序 配置libcurl
如果Msys64是安装在C盘默认路径上
第一步：在Msys64中查询可用的curl包
pacman -Ss curl
第二步：安装
pacman -S mingw-w64-i686-curl
第三步：在.pro文件下增加以下的代码
LIBS += C:msys64mingw32liblibcurl.dll.a
INCLUDEPATH += C:msys64mingw32include
最后：编译链接依赖libcurl的项目成功。
[2]怎样产生cer文件
https原理及tomcat配置https方法
http://jingyan.baidu.com/article/a948d6515d3e850a2dcd2ee6.html
[3]单向认证。让client信任服务端证书
第一步：
双击从服务端keystore中导出的cer文件能够导入证书。
windows下“certmgr.msc”命令能够进入证书管理。
自己制作的证书导入到Win7后默认在“中级证书颁发机构”->“证书”节点里。
第二步：
须要把你做的证书拖到“受信任的根证书颁发机构”->“证书”节点中去，否则
浏览器会提醒“此站点出具的安全证书不是由受信任的证书颁发机构颁发的”等类似错误。
chrome须要重新启动。IE直接刷新页面。就不会出现警告了。
注意：
数字证书转换cer---pem
在Msys2 Shell中确保安装好openssl.
在Msys2 Shell中使用openssl命令后进入openssl提示符。输入以下的命令
x509 -inform der -in d:/MyServerSecurity/tomcat7.cer -out d:/MyServerSecurity/tomcat7.pem
[4]双向认证。让服务端信任client的证书
相当于“Https单向认证”，加入了“服务端验证client身份真实性”的动作。
须要注意的是：服务端的密钥库參数“CN”必须与服务端的IP地址同样，否则会报错，client的随意。
假设服务端的CN为lijun，则client不能为lijun。即这两个不能是同一个名字。
第一步：client生成证书（用于服务端验证client）
keytool -validity 365 -genkeypair -v -alias kagula -keyalg RSA -storetype PKCS12 -keystore D:MyClientSecuritykagulakey.p12 -storepass 123456 -keypass 123456
kagula为证书的名称，D:MyClientSecuritykagulakey.p12证书的存放位置。
第二步：证书格式转为cer文件。
keytool -export -v -alias kagula -keystore D:MyClientSecuritykagulakey.p12 -storetype PKCS12 -storepass 123456 -rfc -file D:MyClientSecuritykagulakey.cer
kagula为证书的名称。D:MyClientSecuritykagulakey.p12证书的存放位置。123456证书password，D:MyClientSecuritykagulakey.cer导出的文件。
第三步：加入到（或新建）一个keystore文件
keytool -import -v -alias kagula -file D:MyClientSecuritykagulakey.cer -keystore D:MyServerSecurity omcat7_client.keystore -storepass 123456
tomcat7_client.keystore假设不存在就会新建一个keystore，假设存在会加入到已经存在的keystore中。
第四步：查看keystore文件里的内容
keytool -list -keystore D:MyServerSecurity omcat7_client.keystore
第五步：改动tomcat7中的server.xml文件
原单向认证的配置例如以下
<Connector port="8443" protocol="org.apache.coyote.http11.Http11Protocol"
maxThreads="150" SSLEnabled="true" scheme="https" secure="true"
clientAuth="false" sslProtocol="TLS"
keystoreFile="D:\MyServerSecurity\tomcat7.keystore" keystorePass="123456"/>
如今改动后。例如以下
<Connector port="8443" protocol="org.apache.coyote.http11.Http11Protocol"
maxThreads="150" SSLEnabled="true" scheme="https" secure="true"
clientAuth="true" sslProtocol="TLS"
keystoreFile="D:\MyServerSecurity\tomcat7.keystore" keystorePass="123456"
truststoreFile="D:\MyServerSecurity\tomcat7_client.keystore" truststorePass="123456"/>
加入了最后一行属性使它指向客户端证书，并把clientAuth属性从false改为true。
第六步（可选）：
Step6-1:
測试Windows下的Chrome是否还能訪问server，果然刷新浏览器后
“https://lijun:8443/escortcashbox/main/aboutUs.do”返回错误信息
Step6-2:
測试libcurl是否还能訪问server。如今libcurl返回7（无法连接server）的错误信息。
最后一步-让Windows下的Chrome和IE能訪问服务端：
双击D:MyClientSecuritykagulakey.p12文件，“不须要加入到受信任的根证书机构”结点。直接导入证书就可以。
默认在certmgr.msc命令，“个人”->“证书”节点下。
最后一步-让libcurl能訪问服务端：
使用msys64打开openssl命令行工具
#client个人证书的公钥
openssl>pkcs12 -in D:MyClientSecuritymyclientkey.p12 -out D:MyClientSecurityclient_publickey.pem -nokeys
或许假设在当前command shell下能找到openssl.exe也能够用以下的命令
“openssl pkcs12 -in D:MyClientSecuritymyclientkey.p12 -out D:MyClientSecurityclient_publickey.pem -nokeys”
#client个人证书的私钥
openssl pkcs12 -in D:MyClientSecuritymyclientkey.p12 -out D:MyClientSecurityclient_privatekey.pem -nocerts -nodes
#也能够转换为公钥与私钥合二为一的文件； client公钥与私钥，一起存在all.pem中
openssl>pkcs12 -in D:MyClientSecuritykagulakey.p12 -out D:MyClientSecurityclient_all.pem -nodes
１、使用client_publickey.pem + client_privatekey.pem (未在win console shell下測试)
curl -k --cert client_publickey.pem --key D:MyClientSecurityclient_privatekey.pem https://lijun:8443/escortcashbox/main/aboutUs.do
2、能够在Msys64 Shell中运行curl命令（假设已经安装了curl）...使用all.pem
curl -k --cert /d/MyClientSecurity/client_all.pem https://lijun:8443/escortcashbox/main/aboutUs.do
以下是双向认证的參考资料
SSL——Secure Sockets Layer
http://www.blogjava.net/icewee/archive/2012/06/04/379947.html
补充阅读资料
使用libcurl实现上传文件到FTPserver
http://blog.csdn.net/lee353086/article/details/5823145
使用libcurl下载http://www.baidu.com/img/baidu.gif演示样例
http://www.cppblog.com/qiujian5628/archive/2008/06/28/54873.html
libcurl的使用总结（一）
http://www.vimer.cn/2010/03/libcurl%E7%9A%84%E4%BD%BF%E7%94%A8%E6%80%BB%E7%BB%93%EF%BC%88%E4%B8%80%EF%BC%89.html
PHP的curl实现get。post 和 cookie
http://www.tsingpost.com/articles/201403/525.html