c++ http network library base on curl
1：totally asynchronous
2：easy api like AFNetworking(ObjC networking framework)
3：callback by c++11 lamda function
4：wrapper of curl
Usage:
std::shared_ptr<Request> request = std::make_shared<Request>();
request->SetURL("http://www.qq.com");
std::shared_ptr<ConnectionOperation> oper = std::make_shared<ConnectionOperation>(request);
oper->SetCompletionCallback([=](std::shared_ptr<ConnectionOperation> operation, std::shared_ptr<Response> response){
std::cout<< "response [" << i << "] text = " << response->ResponseText() << std::endl;
}, [=](std::shared_ptr<ConnectionOperation> operation, std::shared_ptr<Error> error){
std::cout<< "response [" << i << "] error = " << error->msg << std::endl;
});
oper->SetDownloadProgressCallback([](unsigned int bytes, long long totalBytes, long long totalBytesExpected){
});
oper->SetSendProgressCallback([](unsigned int bytes, long long totalBytes, long long totalBytesExpected){
});
queue_->AddOperation(oper);
Denpendies:
1：curl (required)
2：dispatch-lite (required)
3：libevent(optional by macro USE_EVENT)
4：c++11 and above
TODO: config cmake file