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Optimizing query filtering on mdns #100

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18 changes: 17 additions & 1 deletion src/mvrxchange/CMVRxchangeService.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -553,7 +553,9 @@ void CMVRxchangeServiceImpl::mDNS_Client_Task()
result.emplace_back();
ConnectToLocalServiceArgs& localServ = result.back();

localServ.Service = r.canonical_hostname.c_str();
TXString cannonicalName = this->FilterCannonicalName( r.canonical_hostname );

localServ.Service = cannonicalName.GetStdString().c_str();

for(auto& ip : r.ipV4_address)
{
Expand Down Expand Up @@ -617,3 +619,17 @@ void CMVRxchangeServiceImpl::mDNS_Client_Task()
}

}

TXString CMVRxchangeServiceImpl::FilterCannonicalName( const TXString& name ) const
{
TXString serviceAsString = MVRXChange_Service; // e.g. "_mvrxchange._tcp"
ptrdiff_t servicePos = name.Find(serviceAsString);
if (servicePos == std::string::npos)
return "";

ptrdiff_t dotBeforeGroup = name.ReverseFind('.', servicePos - 2);
if (dotBeforeGroup == std::string::npos)
dotBeforeGroup = -1;

return name.Mid(dotBeforeGroup + 1);
}
2 changes: 2 additions & 0 deletions src/mvrxchange/CMVRxchangeService.h
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Expand Up @@ -52,6 +52,8 @@ namespace VectorworksMVR
void mDNS_Client_Stop();
void mDNS_Client_Start();

TXString FilterCannonicalName( const TXString& name ) const;



std::vector<std::unique_ptr<mdns_cpp::mDNS>> fmdns;
Expand Down