PROSAGA码农传奇-SOA/RPC-Capnproto - 在服务器回调中发出客户端请求

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  <P>
    C ++ 14似乎有答案：
    <BR/>
    <a href="https://stackoverflow.com/questions/8236521/how-to-capture-a-unique-ptr-into-a-lambda-expression">
      如何将unique_ptr捕获到lambda表达式中？
    </A>
    <BR/>
    
使用kj :: heap在堆上分配两个对象，并将kj :: Own移动到回调lambda：
  </p>
   <pre>
    <code>
      for(auto& slave : slaveList) {
    try {
        auto client = kj::heap<capnp::EzRpcClient>(slave.second->address);
        auto comparer = kj::heap<CompareNetwork::Client>(client->getMain<CompareNetwork>());
        auto request = comparer->loadRequest();
        std::string addrCopy(slave.first);
        request.setIds(loadData);
        auto loadPromise = request.send();
        promList.add(loadPromise.then([addrCopy, client = std::move(client), comparer = std::move(comparer)](auto response) {
            return std::make_pair(addrCopy, response.getStatus());
        },
        [&, addrCopy](kj::Exception && exception) {
            slaveListLock.lock();
            slaveList.erase(addrCopy);//something failed, remove this slave!
            slaveListLock.unlock();
            std::cout << "ErrLoad0: " << std::string(exception.getDescription()) << std::endl;
            return std::make_pair(addrCopy, CompareNetwork::Status::ERROR);
        }));
    }
    catch(...) {
        std::cout << "Error sending load to: " << slave.first << std::endl;
    }
}

</code>
  </pre>
  <P>
    欢迎更好的想法，但目前似乎工作得很好:)
  </p>
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