引擎源碼版，復(fù)制\Engine\Source\Programs\路徑下的BlankProgram空項目示例。

重命名BlankProgram，例如CustomTcpProgram，并修改項目名稱。

?修改.Build.cs內(nèi)容

修改Target.cs內(nèi)容?

?

?修改Private文件夾內(nèi).h.cpp文件名并修改.cpp內(nèi)容

刷新引擎

在項目.Build.cs中加入模塊

// Copyright Epic Games, Inc. All Rights Reserved.

using UnrealBuildTool;

public class TCPSocketServer : ModuleRules
{
	public TCPSocketServer(ReadOnlyTargetRules Target) : base(Target)
	{
		PublicIncludePathModuleNames.Add("Launch");
		PrivateDependencyModuleNames.Add("Core");
		PrivateDependencyModuleNames.Add("Projects");
        //加入網(wǎng)絡(luò)模塊
		PrivateDependencyModuleNames.Add("Sockets");
		PrivateDependencyModuleNames.Add("ApplicationCore");

		// to link with CoreUObject module:
		// PrivateDependencyModuleNames.Add("CoreUObject");

		// to enable tracing:
		// AppendStringToPublicDefinition("UE_TRACE_ENABLED", "1");

		// to enable LLM tracing:
		// GlobalDefinitions.Add("LLM_ENABLED_IN_CONFIG=1");
		// GlobalDefinitions.Add("UE_MEMORY_TAGS_TRACE_ENABLED=1");
	}
}

?.cpp

// Copyright Epic Games, Inc. All Rights Reserved.

#include "TCPSocketServer.h"

#include "RequiredProgramMainCPPInclude.h"
#include "Sockets.h"
#include "SocketSubsystem.h"

DEFINE_LOG_CATEGORY_STATIC(LogTCPSocketServer, Log, All);

IMPLEMENT_APPLICATION(TCPSocketServer, "TCPSocketServer");

INT32_MAIN_INT32_ARGC_TCHAR_ARGV()
{
	//應(yīng)用初始化設(shè)置  
	GEngineLoop.PreInit(ArgC,ArgV);

	// 獲取網(wǎng)絡(luò)套接字子系統(tǒng)
	ISocketSubsystem* SocketSubsystem = ISocketSubsystem::Get(PLATFORM_SOCKETSUBSYSTEM);
	// 創(chuàng)建一個TCP類型的套接字，命名為"This TcpIp Type"
	FSocket* Socket = SocketSubsystem->CreateSocket(NAME_Stream,TEXT("This TcpIp Type"));

	// 創(chuàng)建一個互聯(lián)網(wǎng)地址對象，用于指定服務(wù)器的IP地址和端口號
	TSharedPtr<FInternetAddr> Addr = SocketSubsystem->CreateInternetAddr();

	Addr->SetPort(8888);

	bool bIsValid = false;
	Addr->SetIp(TEXT("127.0.0.1"),bIsValid);
	
	Socket->Bind(*Addr);

	Socket->Listen(128);
	
	while (true)
	{
		// 接受一個新的客戶端連接請求，并返回一個新的套接字對象來表示這個連接
		FSocket* ClinetSocket = Socket->Accept(TEXT("ClinetConnect"));

		// 創(chuàng)建一個字節(jié)數(shù)組用于存儲接收到的數(shù)據(jù)
		uint8 Buf[1024]{0};
		//存儲實際讀取到的字節(jié)數(shù)
		int32 BytesRead = 0;

		// 從客戶端套接字讀取數(shù)據(jù)到Buf數(shù)組中，最多讀取1024字節(jié)，并將實際讀取的字節(jié)數(shù)存儲在BytesRead中
		ClinetSocket->Recv(Buf,1024,BytesRead);

		// 將接收到的字節(jié)數(shù)組轉(zhuǎn)換為TCHAR字符串（用于UE5的字符串處理）
		FString Msg = UTF8_TO_TCHAR(reinterpret_cast<char *>(Buf));

		UE_LOG(LogTCPSocketServer,Display,TEXT("Msg = %s||Len = %d"),*Msg,BytesRead);
	}
}
/*
*TArray<FSocket*> Sockets; // 假設(shè)這是你的套接字列表  
  
// 遍歷套接字列表  
for (int i = 0; i < Sockets.Num(); i++)  
{  
FSocket* Socket = Sockets[i];  
FInternetAddr* RemoteAddr = Socket->GetRemoteAddress();  
      
// 獲取遠(yuǎn)程地址的IP和端口號  
FString IP;  
uint16 Port;  
RemoteAddr->GetIP(IP);  
RemoteAddr->GetPort(Port);  
      
// 使用IP和端口號進(jìn)行進(jìn)一步的處理或記錄等操作  
UE_LOG(LogTCPSocketServer, Display, TEXT("Client IP: %s, Port: %d"), *IP, Port);  
}
*/

客戶端.cpp

// Copyright Epic Games, Inc. All Rights Reserved.

#include "TCPSocketClient.h"

#include "RequiredProgramMainCPPInclude.h"
#include "Sockets.h"
#include "SocketSubsystem.h"

DEFINE_LOG_CATEGORY_STATIC(LogTCPSocketClient, Log, All);

IMPLEMENT_APPLICATION(TCPSocketClient, "TCPSocketClient");

INT32_MAIN_INT32_ARGC_TCHAR_ARGV()
{
	GEngineLoop.PreInit(ArgC,ArgV);

	ISocketSubsystem* SocketSubsystem = ISocketSubsystem::Get(PLATFORM_SOCKETSUBSYSTEM);

	FSocket* Socket = SocketSubsystem->CreateSocket(NAME_Stream,TEXT("This Tcp Client"));

	TSharedPtr<FInternetAddr> Addr = SocketSubsystem->CreateInternetAddr();
	
	Addr->SetPort(8888);
	bool bIsValid = false;
	Addr->SetIp(TEXT("127.0.0.1"),bIsValid);

	if (Socket->Connect(*Addr))
	{
		FString Msg = TEXT("Hello Server");
		int32 SendSize = 0;
		Socket->Send(reinterpret_cast<uint8*>(TCHAR_TO_UTF8(*Msg)),Msg.Len(),SendSize);
	}

	Socket->Close();
	SocketSubsystem->DestroySocket(Socket);

	UE_LOG(LogTCPSocketClient, Display, TEXT("Hello World"));
	
	FEngineLoop::AppExit();
	return 0;
}

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