本文整理汇总了C++中std::string::isValid方法的典型用法代码示例。如果您正苦于以下问题：C++ string::isValid方法的具体用法？C++ string::isValid怎么用？C++ string::isValid使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类std::string的用法示例。
在下文中一共展示了string::isValid方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: MessageSocketPtr
Future<MessageSocketPtr> TransportSocketCache::socket(const ServiceInfo& servInfo, const std::string& url)
{
const std::string& machineId = servInfo.machineId();
ConnectionAttemptPtr couple = boost::make_shared<ConnectionAttempt>();
couple->relatedUrls = servInfo.endpoints();
bool local = machineId == os::getMachineId();
UrlVector connectionCandidates;
// If the connection is local, we're mainly interested in localhost endpoint
if (local)
connectionCandidates = localhost_only(servInfo.endpoints());
// If the connection isn't local or if the service doesn't expose local endpoints,
// try and connect to whatever is available.
if (connectionCandidates.size() == 0)
connectionCandidates = servInfo.endpoints();
couple->endpoint = MessageSocketPtr();
couple->state = State_Pending;
{
// If we already have a pending connection to one of the urls, we return the future in question
boost::mutex::scoped_lock lock(_socketMutex);
if (_dying)
return makeFutureError<MessageSocketPtr>("TransportSocketCache is closed.");
ConnectionMap::iterator machineIt = _connections.find(machineId);
if (machineIt != _connections.end())
{
// Check if any connection to the machine matches one of our urls
UrlVector& vurls = couple->relatedUrls;
for (std::map<Url, ConnectionAttemptPtr>::iterator b = machineIt->second.begin(), e = machineIt->second.end();
b != e;
b++)
{
UrlVector::iterator uIt = std::find(vurls.begin(), vurls.end(), b->first);
// We found a matching machineId and URL : return the connected endpoint.
if (uIt != vurls.end())
{
qiLogDebug() << "Found pending promise.";
return b->second->promise.future();
}
}
}
// Otherwise, we keep track of all those URLs and assign them the same promise in our map.
// They will all track the same connection.
couple->attemptCount = connectionCandidates.size();
std::map<Url, ConnectionAttemptPtr>& urlMap = _connections[machineId];
for (const auto& url: connectionCandidates)
{
if (!url.isValid())
continue; // Do not try to connect to an invalid url!
if (!local && isLocalHost(url.host()))
continue; // Do not try to connect on localhost when it is a remote!
urlMap[url] = couple;
MessageSocketPtr socket = makeMessageSocket(url.protocol());
_allPendingConnections.push_back(socket);
Future<void> sockFuture = socket->connect(url);
qiLogDebug() << "Inserted [" << machineId << "][" << url.str() << "]";
sockFuture.connect(&TransportSocketCache::onSocketParallelConnectionAttempt, this, _1, socket, url, servInfo);
}
}
return couple->promise.future();
}