So the current plugin is very bare bones, in terms of actual binding meat it’s only 40-50 lines of code, enough to have been done in a short presentation as a proof of concept:
#include "SocketIOClientPrivatePCH.h"
#include "SocketIOClientComponent.h"
USocketIOClientComponent::USocketIOClientComponent(const FObjectInitializer &init) : UActorComponent(init)
{
bWantsInitializeComponent = true;
bAutoActivate = true;
}
std::string StdString(FString UEString)
{
return std::string(TCHAR_TO_UTF8(*UEString));
}
FString FStringFromStd(std::string StdString)
{
return FString(StdString.c_str());
}
void USocketIOClientComponent::Connect(FString AddressAndPort)
{
if (!AddressAndPort.IsEmpty())
{
PrivateClient.connect(StdString(AddressAndPort));
}
else
{
PrivateClient.connect("http://localhost:3000");
}
}
void USocketIOClientComponent::Emit(FString Name, FString Data)
{
PrivateClient.socket()->emit(StdString(Name), StdString(Data));
//UE_LOG(LogTemp, Log, TEXT("Emit %s with %s"), *Name, *Data);
}
void USocketIOClientComponent::Bind(FString Name)
{
PrivateClient.socket()->on(StdString(Name), sio::socket::event_listener_aux(&](std::string const& name, sio::message::ptr const& data, bool isAck, sio::message::list &ack_resp) {
const FString SafeName = FStringFromStd(name);
const FString SafeData = FStringFromStd(data->get_string());
FFunctionGraphTask::CreateAndDispatchWhenReady(&, SafeName, SafeData]
{
On.Broadcast(SafeName, SafeData);
}, TStatId(), nullptr, ENamedThreads::GameThread);
}));
}
That is literally it. But it’s apparently useful, so I may have to look into extending it a bit 
It should be a fairly easy modification to support namespaces. The current code uses
PrivateClient.socket()-> ...
which fetches the default namespace “/” and the method should just expand to add a namespace variable e.g.
FString Namespace = FString(TEXT("events"));
PrivateClient.socket(StdString(Namespace))-> ...
events.
Feel free to modify the source and make a pull request, otherwise it may take a bit of time before I make a pass on the plugin with the fixes. I’ve added a note about it in github issues on the repo.
