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cocos2d-x学习篇之网络（http）篇
#ifndef __HTTP_REQUEST_H__
#define __HTTP_REQUEST_H__
#include "cocos2d.h"
#include "ExtensionMacros.h"
NS_CC_EXT_BEGIN
class CCHttpClient;
class CCHttpResponse;
typedef void (CCObject::*SEL_HttpResponse)(CCHttpClient* client, CCHttpResponse* response); //定义类型SEL_HttpResponse（CCObject类内函数 参数CCHttpClient CCHttpResponse 返回void）
#define httpresponse_selector(_SELECTOR) (cocos2d::extension::SEL_HttpResponse)(&_SELECTOR)//定义宏httpresponse_selector 可以将参数强转成cocos2d::extension::SEL_HttpResponse类型
/**
@brief defines the object which users must packed（包装） for CCHttpClient::send(HttpRequest*) method.
Please refer to samples/TestCpp/Classes/ExtensionTest/NetworkTest/HttpClientTest.cpp as a sample
@since v2.0.2
*/
class CCHttpRequest : public CCObject
{
public:
/** Use this enum type as param in setReqeustType(param) */
typedef enum
{
kHttpGet,
kHttpPost,
kHttpPut,
kHttpDelete,
kHttpUnkown,
} HttpRequestType;
/** Constructor
Because HttpRequest object will be used between UI thead and network thread,
requestObj->autorelease() is forbidden to avoid crashes in CCAutoreleasePool
new/retain/release still works, which means you need to release it manually
Please refer to HttpRequestTest.cpp to find its usage
*/
CCHttpRequest()
{
_requestType = kHttpUnkown;
_url.clear();
_requestData.clear();
_tag.clear();
_pTarget = NULL;
_pSelector = NULL;
_pUserData = NULL;
};
/** Destructor */
virtual ~CCHttpRequest()
{
if (_pTarget)
{
_pTarget->release();
}
};
/** Override autorelease method to avoid developers to call it */
CCObject* autorelease(void)
{
CCAssert(false, "HttpResponse is used between network thread and ui thread \
therefore, autorelease is forbidden here");
return NULL;
}
// setter/getters for properties
/** Required field（必须填写） for HttpRequest object before being sent.
kHttpGet & kHttpPost is currently supported
*/
inline void setRequestType(HttpRequestType type) // 必须填写 设置请求类型 kHttpGet kHttpPost当前可用
{
_requestType = type;
};
/** Get back the kHttpGet/Post/... enum value */
inline HttpRequestType getRequestType()
{
return _requestType;
};
/** Required field for HttpRequest object before being sent.
*/
inline void setUrl(const char* url) //设置url 必须填写
{
_url = url;
};
/** Get back the setted url */
inline const char* getUrl()
{
return _url.c_str();
};
/** Option field（选择字段）. You can set your post data here
*/
inline void setRequestData(const char* buffer, unsigned int len) //kHttpPost 类型可以在url之外传额外信息 kHttpGet传的所有东西都在url显示（不安全）
{
_requestData.assign(buffer, buffer + len);
};
/** Get the request data pointer back */
inline char* getRequestData()
{
return &(_requestData.front());
}
/** Get the size of request data back */
inline int getRequestDataSize()
{
return _requestData.size();
}
/** Option field（选择字段） . You can set a string tag to identify(识别) your request, this tag can be found in HttpResponse->getHttpRequest->getTag()
*/
inline void setTag(const char* tag) //用于辨别哪个请求
{
_tag = tag;
};
/** Get the string tag back to identify the request.
The best practice is to use it in your MyClass::onMyHttpRequestCompleted(sender, HttpResponse*) callback
*/
inline const char* getTag()
{
return _tag.c_str();
};
/** Option field. You can attach a customed data in each request, and get it back in response callback.
But you need to new/delete the data pointer manully
*/
inline void setUserData(void* pUserData)
{
_pUserData = pUserData;
};
/** Get the pre-setted custom data pointer back.
Don't forget to delete it. HttpClient/HttpResponse/HttpRequest will do nothing with this pointer
*/
inline void* getUserData()
{
return _pUserData;
};
/** Required field（必须填写）. You should set the callback selector function at ack（确认） the http request completed（完全的）
*/
CC_DEPRECATED_ATTRIBUTE inline void setResponseCallback(CCObject* pTarget, SEL_CallFuncND pSelector)
{
setResponseCallback(pTarget, (SEL_HttpResponse) pSelector);
}
inline void setResponseCallback(CCObject* pTarget, SEL_HttpResponse pSelector)
{
_pTarget = pTarget;
_pSelector = pSelector;
if (_pTarget)
{
_pTarget->retain();
}
}
/** Get the target of callback selector funtion, mainly used by CCHttpClient */
inline CCObject* getTarget()
{
return _pTarget;
}
/* This sub class is just for migration（迁移） SEL_CallFuncND to SEL_HttpResponse,
someday this way will be removed */ //这个类用于SEL_CallFuncND SEL_HttpResponse之间转换 将废弃
class _prxy
{
public:
_prxy( SEL_HttpResponse cb ) :_cb(cb) {}
~_prxy(){};
operator SEL_HttpResponse() const { return _cb; }
CC_DEPRECATED_ATTRIBUTE operator SEL_CallFuncND() const { return (SEL_CallFuncND) _cb; }
protected:
SEL_HttpResponse _cb;
};
/** Get the selector function pointer, mainly used by CCHttpClient */
inline _prxy getSelector()
{
return _prxy(_pSelector);
}
/** Set any custom headers **/
inline void setHeaders(std::vector<std::string> pHeaders)
{
_headers=pHeaders;
}
/** Get custom headers **/
inline std::vector<std::string> getHeaders()
{
return _headers;
}
protected:
// properties
HttpRequestType _requestType; /// kHttpRequestGet, kHttpRequestPost or other enums
std::string _url; /// target url that this request is sent to
std::vector<char> _requestData; /// used for POST
std::string _tag; /// user defined tag, to identify different requests in response callback
CCObject* _pTarget; /// callback target of pSelector function
SEL_HttpResponse _pSelector; /// callback function, e.g. MyLayer::onHttpResponse(CCHttpClient *sender, CCHttpResponse * response)
void* _pUserData; /// You can add your customed data here
std::vector<std::string> _headers; /// custom http headers
};
NS_CC_EXT_END
#endif //__HTTP_REQUEST_H__
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