ConnectionHandle.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "HAL/Platform.h"
#include "Templates/TypeHash.h"
 
namespace UE::Net
{
 
class FConnectionHandle
{
public:
    inline FConnectionHandle() = default;
    explicit FConnectionHandle(uint32 InParentConnectionId);
    FConnectionHandle(uint32 InParentConnectionId, uint32 InChildConnectionId);
 
    bool operator==(const FConnectionHandle& Other) const;
 
    bool IsValid() const;
    bool IsParentConnection() const;
    bool IsChildConnection() const;
 
    uint32 GetParentConnectionId() const;
    uint32 GetChildConnectionId() const;
 
private:
    friend uint32 GetTypeHash(const FConnectionHandle& Handle);
 
    uint32 ParentConnectionId = 0;
    // For a valid handle a ChildConnectionId of zero indicates it's the parent connection itself.
    uint32 ChildConnectionId = 0;
};
 
inline FConnectionHandle::FConnectionHandle(uint32 InParentConnectionId)
: ParentConnectionId(InParentConnectionId)
, ChildConnectionId(0)
{
}
 
inline FConnectionHandle::FConnectionHandle(uint32 InParentConnectionId, uint32 InChildConnectionId)
: ParentConnectionId(InParentConnectionId)
, ChildConnectionId(InChildConnectionId)
{
}
 
inline bool FConnectionHandle::operator==(const FConnectionHandle& Other) const
{
    return ParentConnectionId == Other.ParentConnectionId && ChildConnectionId == Other.ChildConnectionId;
}
 
inline bool FConnectionHandle::IsValid() const
{
    return ParentConnectionId > 0U;
}
 
inline bool FConnectionHandle::IsParentConnection() const
{
    return IsValid() && ChildConnectionId == 0U;
}
 
inline bool FConnectionHandle::IsChildConnection() const
{
    return IsValid() && ChildConnectionId != 0U;
}
 
inline uint32 FConnectionHandle::GetParentConnectionId() const
{
    return ParentConnectionId;
}
 
inline uint32 FConnectionHandle::GetChildConnectionId() const
{
    return IsValid() ? ChildConnectionId : 0U;
}
 
inline uint32 GetTypeHash(const FConnectionHandle& Handle)
{
    return ::GetTypeHash((uint64(Handle.ParentConnectionId) << 32U) | uint64(Handle.ChildConnectionId));
}
 
}